{"gene":"ANO1","run_date":"2026-06-09T22:02:43","timeline":{"discoveries":[{"year":2008,"finding":"TMEM16A (ANO1) is a calcium-activated chloride channel: heterologous expression produces Ca2+-activated Cl- currents with biophysical and pharmacological properties matching native CaCC currents; knockdown of mouse Ano1 markedly reduced native Ca2+-activated chloride currents and saliva production in mice.","method":"Heterologous expression, whole-cell patch clamp, RNAi knockdown in mice with functional readout (saliva production)","journal":"Nature","confidence":"High","confidence_rationale":"Tier 1 / Strong — reconstitution of channel activity in heterologous system combined with in vivo knockdown phenotype; foundational paper widely replicated","pmids":["18724360"],"is_preprint":false},{"year":2009,"finding":"TMEM16A localizes to apical membranes of epithelial cells in exocrine glands and trachea, to airway and reproductive-tract smooth muscle cells, and to interstitial cells of Cajal (ICC) in the GI tract (but not GI smooth muscle); TMEM16A knockout mice show diminished rhythmic gastric smooth muscle contraction, establishing its role as the pacemaker CaCC in ICC.","method":"TMEM16A-specific antibody validated in knockout mice (immunofluorescence, Western blot), knockout mouse contractility assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — subcellular localization directly validated by KO-confirmed antibody; functional KO phenotype with specific contractility readout","pmids":["19965375"],"is_preprint":false},{"year":2012,"finding":"The anion selectivity (HCO3-/Cl- permeability ratio) of ANO1 is dynamically regulated by the Ca2+/calmodulin complex: calmodulin physically interacts with ANO1 in a [Ca2+]i-dependent manner, and addition of recombinant calmodulin to the cytosolic side of excised patches reversibly increased PHCO3/PCl.","method":"Whole-cell and excised-patch electrophysiology in HEK293T cells; recombinant calmodulin application; native submandibular gland acinar cells","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 / Moderate — direct reconstitution in excised patches with recombinant calmodulin, multiple orthogonal methods in one study","pmids":["23248295"],"is_preprint":false},{"year":2012,"finding":"ANO1/TMEM16A channels in arterial myocytes are activated by membrane stretch (cell swelling/pressure) via a local Ca2+ signal generated by nonselective cation channels (blocked by Gd3+ and SKF-96365, but not by L-type Ca2+ channel blocker nimodipine or store-depletion with thapsigargin); TMEM16A knockdown reduced pressure-induced membrane depolarization and vasoconstriction (myogenic response) without altering K+-induced constriction.","method":"RNAi-mediated TMEM16A knockdown, inhibitory antibodies, cell-attached patch clamp, pressure myography in cerebral arteries","journal":"Circulation research","confidence":"High","confidence_rationale":"Tier 2 / Moderate — reciprocal inhibitory antibody + RNAi knockdown + pressure myography; multiple orthogonal methods, specific phenotypic readout","pmids":["22872152"],"is_preprint":false},{"year":2012,"finding":"TMEM16A overexpression promotes tumor growth via activation of ERK1/2 and induction of cyclin D1 (MAPK pathway); pharmacologic MEK/ERK inhibition and dominant-negative ERK1/2 constructs abrogated the TMEM16A-mediated growth effect.","method":"Stable overexpression and siRNA knockdown in HNSCC cell lines; in vivo xenograft; MEK/ERK inhibitors; dominant-negative ERK1/2; Western blot for p-ERK, cyclin D1","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic gain/loss-of-function with pharmacological pathway validation; single lab but multiple orthogonal approaches","pmids":["22564524"],"is_preprint":false},{"year":2014,"finding":"ANO1/TMEM16A interacts with EGFR via the EGFR trans/juxtamembrane domain; ANO1 expression affects EGFR protein stability, while EGFR signaling elevates ANO1 protein levels, establishing a reciprocal functional and regulatory complex that jointly controls HNSCC cell proliferation.","method":"Unbiased proteomics screen, structural EGFR and ANO1 mutant analysis, co-immunoprecipitation, Western blot","journal":"Oncotarget","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — proteomics pulldown plus structural mutant mapping of interaction domain; single lab","pmids":["25823819"],"is_preprint":false},{"year":2014,"finding":"ANO1/TMEM16A is localized in the primary cilium before and during ciliogenesis; before ciliogenesis, ANO1 organizes into a torus-shaped 'nimbus' structure co-enriched with Cdc42, Arl13b, and exocyst component Sec6; pharmacological block or shRNA knockdown of ANO1 interferes with primary ciliogenesis.","method":"Immunofluorescence, shRNA knockdown, pharmacological inhibition, confocal microscopy","journal":"Molecular biology of the cell","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct localization with functional KD phenotype; single lab, two methods","pmids":["24694595"],"is_preprint":false},{"year":2014,"finding":"ANO1 regulates cell cycle progression at the G1/S transition: Cl- channel blockers decreased proliferation of ICC and CFPAC-1 cells expressing ANO1, with reduced effect in Ano1-/- cultures; Ano1 knockout mice show fewer proliferating ICC and less phosphorylated retinoblastoma protein.","method":"Ano1 knockout mice, Ki67 immunoreactivity, EdU incorporation, cell-cycle analysis, low-Cl- media experiments, Cl- channel blockers","journal":"American journal of physiology. Gastrointestinal and liver physiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KO mouse + in vitro Cl- channel blockers with KO-comparison controls; multiple readouts in one study","pmids":["21940901"],"is_preprint":false},{"year":2013,"finding":"DOG1/ANO1 silencing in GIST xenografts delays tumor growth in vivo and upregulates IGFBP5 (an antiangiogenic factor) in explanted tumors; DOG1 silencing or pharmacologic inhibition did not alter cell growth or KIT signaling in vitro, indicating the oncogenic role of DOG1 involves modulation of the IGF/IGFR axis in the tumor microenvironment.","method":"RNAi knockdown, DOG1 inhibitor treatment, GIST xenografts, expression profiling, IGFBP5 mRNA quantification","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vivo xenograft with transcriptome profiling showing pathway; in vitro results explicitly negative for direct growth effect","pmids":["23576565"],"is_preprint":false},{"year":2014,"finding":"TMEM16A depletion in colorectal cancer SW620 cells suppresses growth, migration, and invasion; mechanistically, TMEM16A knockdown reduces phospho-MEK, phospho-ERK1/2, and cyclin D1 and causes G1/S cell-cycle arrest.","method":"shRNA knockdown, MTT, wound-healing, transwell assays, flow cytometry, Western blot for MAPK pathway components","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — clean KD with defined cellular and molecular phenotype; single lab, single knockdown approach","pmids":["25541940"],"is_preprint":false},{"year":2014,"finding":"ANO1 channel activity is coupled to localized Ca2+ signals from intracellular Ca2+ store release sites (IP3R); in multiple cell types, ANO1 preferentially co-localizes with Ca2+ release sites of the ER rather than responding to bulk cytoplasmic Ca2+.","method":"Co-localization imaging, electrophysiology showing differential activation by local vs. global Ca2+ signals (reviewed/synthesized from multiple primary studies)","journal":"The Journal of physiology","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — localization data from multiple independent groups; primarily a synthesis, but individual data support co-localization with functional implication","pmids":["25398532"],"is_preprint":false},{"year":2015,"finding":"PKCα regulates TMEM16A-mediated Cl- secretion in biliary epithelial cells: extracellular ATP triggers PKCα translocation to the plasma membrane; intracellular dialysis with recombinant PKCα activates Cl- currents with TMEM16A biophysical properties in control cells but not after TMEM16A siRNA knockdown.","method":"Whole-cell patch clamp, recombinant PKCα intracellular dialysis, PKCα siRNA and pharmacologic inhibition, TMEM16A siRNA","journal":"American journal of physiology. Gastrointestinal and liver physiology","confidence":"High","confidence_rationale":"Tier 1 / Moderate — reconstitution with recombinant PKCα in patch pipette plus KD controls; multiple orthogonal approaches in single study","pmids":["26542395"],"is_preprint":false},{"year":2015,"finding":"ANO1 overexpression in spontaneously hypertensive rats (SHRs) contributes to hypertension; angiotensin II upregulates ANO1 expression in vascular smooth muscle cells (VSMCs), and ANO1 protein level and activity positively correlate with VSMC proliferation; siRNA knockdown of ANO1 prevented hypertensive development.","method":"SHR model, siRNA knockdown, ANO1 inhibitor (T16Ainh-A01), angiotensin II stimulation of primary VSMCs, Western blot, blood pressure measurement","journal":"Journal of molecular and cellular cardiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vivo RNAi + pharmacological inhibition + primary cell culture; single lab, multiple methods","pmids":["25739000"],"is_preprint":false},{"year":2015,"finding":"TMEM16A expression shifts HNSCC cells between proliferative and metastatic phenotypes ('grow or go'); S970 residue of TMEM16A is required for effects on cell size and epithelial-to-mesenchymal transition (EMT), and mediates association with Radixin (an actin-scaffolding protein implicated in EMT); S970A mutation does not disrupt TMEM16A-driven proliferation; promoter methylation mediates TMEM16A downregulation during EMT transition.","method":"Proteomic screens, stable TMEM16A knockdown, orthotopic mouse metastasis model, S970A point mutation, co-immunoprecipitation with Radixin, bisulfite sequencing, patient tissue analysis","journal":"Clinical cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — point mutant plus co-IP plus in vivo model; single lab, multiple orthogonal methods","pmids":["24919570"],"is_preprint":false},{"year":2017,"finding":"Tissue-specific TMEM16A knockout in mouse intestine and airways not only eliminates Ca2+-activated Cl- currents but also abrogates CFTR-mediated Cl- secretion and cAMP-activated currents; mechanistically, TMEM16A is required for ER Ca2+ store release (engaging SOcAMPS) and for proper membrane expression of CFTR.","method":"Tissue-specific Cre-lox KO mice (TMEM16Aflox/flox × FoxJ1-Cre, Vil1-Cre), Ussing chamber, whole-cell patch clamp, surface biotinylation for CFTR membrane expression","journal":"Scientific reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — tissue-specific KO with two independent Cre lines; Ussing chamber + patch clamp + membrane trafficking; multiple orthogonal methods","pmids":["28963502"],"is_preprint":false},{"year":2017,"finding":"TMEM16A and CFTR functional coupling in airway epithelial cells is mediated by a compartmentalized signalosome: GPCRs recruit Ca2+-sensitive adenylyl cyclase type 1 (ADCY1) and EPAC1 to membrane domains containing GPCRs, CFTR, and TMEM16A, producing compartmentalized Ca2+ and cAMP signals; maturation and membrane trafficking of TMEM16A can occur independently of the Golgi.","method":"GPCR knockdown, ADCY1 and EPAC1 localization studies, Western blot, patch clamp, Ussing chamber","journal":"Cellular signalling","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — GPCR knockdown plus compartmentalization imaging plus electrophysiology; single lab","pmids":["29331508"],"is_preprint":false},{"year":2017,"finding":"TMEM16A is regulated by phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2): depletion of PI(4,5)P2 causes Ca2+-dependent current decline; supplying PI(4,5)P2 to inside-out patches attenuates channel rundown; cholesterol modulates TMEM16A activity through both PI(4,5)P2-dependent and -independent mechanisms; fatty acids (stearic, arachidonic, oleic, DHA, EPA) and phosphatidylserine inhibit TMEM16A in a dose- and voltage-dependent manner via membrane-delimited protein-lipid interaction.","method":"Patch clamp (whole-cell and inside-out), PI(4,5)P2 depletion (rapamycin system), methyl-β-cyclodextrin cholesterol manipulation, fatty acid application, surface biotinylation","journal":"Biochimica et biophysica acta. Molecular and cell biology of lipids","confidence":"High","confidence_rationale":"Tier 1 / Moderate — inside-out patch reconstitution with PI(4,5)P2 plus multiple lipid manipulations with surface localization controls; multiple orthogonal approaches","pmids":["29277655"],"is_preprint":false},{"year":2017,"finding":"TMEM16A/ANO1 promotes tumor cell survival by inhibiting apoptosis via downregulation of Bim expression; TMEM16A expression correlates with increased ERK1/2 activity and reduced Bim in human HNSCC.","method":"siRNA knockdown, in vitro viability/apoptosis assays, in vivo xenograft, Western blot (Bim, p-ERK1/2), human HNSCC tissue analysis","journal":"Clinical cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KD + in vivo + human tissue; single lab, multiple methods","pmids":["28899969"],"is_preprint":false},{"year":2017,"finding":"TMEM16A and LRRC8A (VRAC) can be co-immunoprecipitated; loss of LRRC8A attenuates Ca2+-activated Cl- currents and ANO1-dependent membrane capacitance changes; ANO1-expressing cells show increased membrane capacitance and FM4-64 membrane binding upon intracellular Ca2+ elevation, suggesting a role for ANO1 in exocytosis.","method":"Co-immunoprecipitation, LRRC8A siRNA knockdown, patch clamp, membrane capacitance measurements, FM4-64 fluorescence","journal":"Pflugers Archiv : European journal of physiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP plus functional KD with multiple electrophysiological readouts; single lab","pmids":["27514381"],"is_preprint":false},{"year":2018,"finding":"TMEM16A is essential for basal (ATP-driven) mucus secretion in airways and intestine: ciliated-cell-specific and intestinal-epithelial-specific TMEM16A knockout mice show mucus accumulation in airway club cells and intestinal goblet cells; acute ATP-induced mucus secretion is abrogated by TMEM16A KO in ciliated cells; cholinergic mucus secretion by compound exocytosis is independent of TMEM16A.","method":"Tissue-specific KO mice (TMEM16Aflox/flox × FoxJ1-Cre, Vil1-Cre), TMEM16A inhibitors, siRNA knockdown, mucus secretion assays, IL-8 measurement","journal":"FASEB journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — two independent tissue-specific KO lines with specific mucus secretion readouts; also dissects cholinergic vs. ATP-driven pathways","pmids":["30586313"],"is_preprint":false},{"year":2016,"finding":"ANO1/TMEM16A transports HCO3- into pancreatic acinar cell lumen under physiological CCK stimulation; T16inh-A01 blockade significantly increases luminal acidification after zymogen granule exocytosis; in acute pancreatitis model, ANO1 acts to attenuate luminal pH shifts.","method":"Freshly isolated pancreatic acini with preserved luminal structure, intraluminal pH measurement (fluorescent indicator), specific TMEM16A inhibitor T16inh-A01","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct functional measurement in native tissue with selective pharmacological inhibition; single lab","pmids":["27510033"],"is_preprint":false},{"year":2019,"finding":"TMEM16A expression in medial habenula (mHb) cholinergic neurons is required for normal action potential firing: conditional knockout of TMEM16A in mHb cholinergic neurons reduces after-hyperpolarization slope and firing frequency, decreases activity of the interpeduncular nucleus, and produces anxiety-related behaviors and deficits in social interaction.","method":"Conditional knockout mice (cKO), RNAscope in situ hybridization, immunohistochemistry, whole-cell patch clamp electrophysiology, DREADD chemogenetic inhibition, behavioral assays","journal":"EMBO reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — cell-specific conditional KO with electrophysiology + chemogenetic validation + behavioral phenotype; multiple orthogonal methods","pmids":["31782602"],"is_preprint":false},{"year":2019,"finding":"ANO1/TMEM16A regulates process extension of radial glial cells (RGCs) in the developing brain: ANO1 is expressed and functionally active in RGCs; knockdown suppresses process extension while overexpression stimulates it; BDNF activates ANO1 which is required for BDNF-induced process extension; Ano1-deficient mice show disrupted cortical layers and reduced cortical thickness.","method":"Ano1 knockout mice, cortical layer analysis, shRNA knockdown, ANO1 overexpression, patch-clamp electrophysiology in RGCs, BDNF stimulation assays","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — KO mice + gain/loss-of-function + electrophysiology + in vivo cortical layering phenotype; multiple orthogonal methods","pmids":["31147466"],"is_preprint":false},{"year":2019,"finding":"CaMKII phosphorylates TMEM16A, specifically at serine 528, to promote channel rundown; mutation of S528A attenuates TMEM16A rundown similarly to CaMKII inhibitors; PP1/PP2A phosphatases counteract this effect. ATP-dependent CaMKII activity drives current decay.","method":"Whole-cell patch clamp in HEK293 cells expressing mouse TMEM16A; CaMKII inhibitors (AIP, KN-93); PP1/PP2A inhibitors (okadaic acid, cantharidin); S528A point mutation; ATP-free pipette solutions","journal":"American journal of physiology. Cell physiology","confidence":"High","confidence_rationale":"Tier 1 / Moderate — site-directed mutagenesis (S528A) combined with selective kinase/phosphatase inhibitors and reconstitution in HEK cells; multiple orthogonal pharmacological/genetic approaches","pmids":["31461344"],"is_preprint":false},{"year":2021,"finding":"TMEM16A activation promotes breast cancer cell migration and invasion; mechanistically, TMEM16A activates EGFR/STAT3/ROCK1 signaling, and ROCK1 in turn enhances TMEM16A channel activity via phosphorylation of moesin at T558, creating a positive feedback loop.","method":"Wound-healing and transwell assays, whole-cell patch clamp, ROCK1/RhoA overexpression, moesin T558 phosphorylation Western blot, mouse lung metastasis model","journal":"Journal of advanced research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — patch clamp for channel activity + specific phosphorylation site identification + in vivo metastasis model; single lab","pmids":["34603794"],"is_preprint":false},{"year":2022,"finding":"Pericyte TMEM16A amplifies capillary constriction after ischemia: a small rise in [Ca2+]i activates TMEM16A-dependent Cl- efflux, depolarizing pericytes and opening voltage-gated Ca2+ channels to amplify [Ca2+]i further; TMEM16A inhibition slows ischemia-evoked pericyte [Ca2+]i rise, capillary constriction, and pericyte death in a rodent stroke model.","method":"TMEM16A inhibitors, rodent stroke model, live two-photon imaging of [Ca2+]i and capillary diameter, genetic analysis of TMEM16A expression in patient stroke recovery","journal":"The Journal of clinical investigation","confidence":"High","confidence_rationale":"Tier 2 / Strong — pharmacological inhibition with live imaging + in vivo stroke model + defined Ca2+-Cl- feedback mechanism; multiple orthogonal approaches","pmids":["35316222"],"is_preprint":false},{"year":2022,"finding":"TMEM16A interacts with GPX4 to induce GPX4 ubiquitination and degradation, thereby enhancing ferroptosis in hepatocytes; disruption of the TMEM16A-GPX4 interaction abrogates GPX4 ubiquitination, ferroptosis, and hepatic ischemia/reperfusion injury; hepatocyte-specific TMEM16A KO reduces I/R injury in mice.","method":"Hepatocyte-specific TMEM16A KO and overexpression transgenic mice, co-immunoprecipitation, ubiquitination assays, ferroptosis inducers/inhibitors, in vitro hypoxia/reoxygenation model","journal":"Cell death & disease","confidence":"High","confidence_rationale":"Tier 2 / Strong — tissue-specific KO + gain-of-function + co-IP + ubiquitination assay + rescue by disrupting interaction; multiple orthogonal methods","pmids":["36572666"],"is_preprint":false},{"year":2022,"finding":"TMEM16A overexpression promotes lysosomal biogenesis and exocytosis via a pathway requiring ROS, TRPML1, and β-catenin–MITF signaling, enabling expulsion of intracellular cisplatin and contributing to cisplatin resistance in SCCHN.","method":"Genetic and pharmacological (hydroxychloroquine) lysosomal inhibition, ROS measurement, TRPML1 and β-catenin pathway analysis, cisplatin quantification, murine SCCHN PDX model","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple genetic and pharmacological perturbations with mechanistic pathway mapping; in vivo PDX model; single lab","pmids":["35286200"],"is_preprint":false},{"year":2020,"finding":"Hepatocyte TMEM16A interacts with VAMP3 to induce VAMP3 degradation, suppressing VAMP3/syntaxin 4 and VAMP3/SNAP23 SNARE complexes; this impairs GLUT2 translocation to the plasma membrane and hepatic glucose uptake, contributing to NAFLD; VAMP3 overexpression reverses TMEM16A-induced metabolic dysfunction.","method":"Hepatocyte-specific TMEM16A KO and transgenic mice, co-immunoprecipitation, VAMP3/syntaxin4/SNAP23 complex analysis, GLUT2 surface biotinylation, glucose uptake assays, VAMP3 overexpression/knockdown rescue experiments","journal":"Advanced science","confidence":"High","confidence_rationale":"Tier 2 / Strong — tissue-specific KO + gain-of-function + co-IP + SNARE complex analysis + GLUT2 trafficking with rescue experiments; multiple orthogonal methods","pmids":["32440483"],"is_preprint":false},{"year":2018,"finding":"TRPV4 functionally interacts with ANO1 in salivary and lacrimal gland acinar cells: TRPV4 activation increases [Ca2+]i via an IP3-dependent mechanism and evokes ANO1-mediated chloride currents and acinar cell shrinkage; TRPV4-deficient mice and TRPV4 antagonist treatment reduce muscarinic salivation and lacrimation; temperature dependence of muscarinic salivation depends mainly on TRPV4.","method":"Patch clamp, TRPV4 knockout mice, TRPV4-specific activator (GSK1016790A) and antagonist (HC-067047), isolated acinar cells from salivary and lacrimal glands","journal":"FASEB journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — TRPV4 KO mice + pharmacological tools + patch clamp; functional interaction established; single lab","pmids":["29187363"],"is_preprint":false},{"year":2023,"finding":"ANO1, CaV1.2, and IP3R form a stable localized signaling complex in pulmonary arterial smooth muscle cell plasma membrane: co-immunoprecipitation with anti-ANO1 antibody pulls down both CaV1.2 and IP3R; co-assembly confirmed by confocal and superresolution nanomicroscopy; smooth muscle-specific ANO1 ablation equally abolishes 5-HT-induced Ca2+ waves and tone as CaV1.2 or IP3R inhibition.","method":"Smooth muscle-specific ANO1 KO, co-immunoprecipitation, confocal and superresolution nanomicroscopy, pharmacological inhibition of ANO1/CaV1.2/IP3R, GCaMP3/6 Ca2+ imaging, pressure myography","journal":"The Journal of general physiology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — co-IP + super-resolution nanomicroscopy + tissue-specific KO + Ca2+ imaging + pressure myography; multiple rigorous orthogonal methods","pmids":["37702787"],"is_preprint":false},{"year":2023,"finding":"ANO1 inhibits cancer ferroptosis through PI3K-Akt signaling and promotes TGF-β release to recruit cancer-associated fibroblasts, thereby remodeling the tumor immune microenvironment and generating resistance to anti-PD-1 immunotherapy; ANO1 knockdown or inhibition enhances immunotherapeutic effectiveness.","method":"ANO1 knockdown and inhibition in multiple GI cancer cell lines, CDX and PDX mouse models, multi-omics study, TGF-β and PI3K-Akt pathway analysis, CD8+ T cell activity assays","journal":"Advanced science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KD + inhibition + in vivo models + pathway analysis; single study but multiple orthogonal approaches","pmids":["37341301"],"is_preprint":false},{"year":2023,"finding":"Rare gain-of-function variants in ANO1 (including p.Met658Val) predispose to moyamoya disease; patch-clamp recordings of these variants show increased sensitivity to intracellular Ca2+.","method":"Exome sequencing, family-based segregation analysis (LOD score 3.3), patch-clamp electrophysiology of ANO1 variants in heterologous expression","journal":"Brain","confidence":"Medium","confidence_rationale":"Tier 1 / Weak — patch-clamp reconstitution with mutagenesis, but single study; functional validation of multiple variants is limited","pmids":["37253099"],"is_preprint":false},{"year":2019,"finding":"SP1 transcription factor increases ANO1 transcription in gastric cancer by recruiting MLL1 to the ANO1 promoter region, facilitating H3K4 trimethylation and subsequently promoting ANO1 expression.","method":"ChIP for SP1 and MLL1 at ANO1 promoter, H3K4me3 Western blot/ChIP, SP1 knockdown/overexpression, ANO1 promoter luciferase assay","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP for both SP1 and MLL1 plus H3K4me3 at the ANO1 promoter; multiple chromatin methods; single lab","pmids":["30871776"],"is_preprint":false},{"year":2023,"finding":"TRPV3 functionally interacts with ANO1 in skin keratinocytes: TRPV3 activation evokes ANO1-mediated Cl- currents; TRPV3 blocker, ANO1 blocker, or low-Cl- medium inhibit keratinocyte migration and proliferation through p38 phosphorylation and cell cycle arrest, implicating chloride influx via ANO1 in wound healing.","method":"Patch clamp in NHEKs and mouse keratinocytes, TRPV3 and ANO1 pharmacological blockers, in vitro wound-healing assay, p38 phosphorylation Western blot","journal":"Communications biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — patch clamp + pharmacological blockade + wound-healing assay + signaling readout; single lab","pmids":["36690845"],"is_preprint":false},{"year":2021,"finding":"TMEM16A is functionally expressed in type I taste bud cells (but not type II or III); ATP (released by type II cells) activates Ca2+-activated Cl- currents through TMEM16A in type I cells via P2Y purinergic receptors; these currents are blocked by the selective inhibitor Ani-9.","method":"Immunohistochemistry, whole-cell patch clamp in isolated taste cells, ion substitution experiments, selective TMEM16A blocker Ani-9, ATP stimulation","journal":"The Journal of physiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct electrophysiology in native cells with selective pharmacological tool + immunolocalization; single lab","pmids":["34089532"],"is_preprint":false}],"current_model":"ANO1 (TMEM16A) is a homodimeric, eight-to-ten-transmembrane-domain Ca2+-activated chloride channel that forms the molecular basis of native CaCC currents in secretory epithelia, smooth muscle, interstitial cells of Cajal, sensory neurons, and central neurons; it is gated directly by intracellular Ca2+ binding and by voltage, with its HCO3-/Cl- permeability ratio dynamically tuned by the Ca2+/calmodulin complex, its activity regulated by CaMKII-mediated phosphorylation at S528 (promoting rundown, reversed by PP1/PP2A), and its gating sustained by membrane PI(4,5)P2 and modulated by cholesterol and fatty acids; ANO1 is physically and functionally coupled to TRPV-family Ca2+ entry channels (TRPV3, TRPV4), IP3Rs and CaV1.2 (forming a localized EC-coupling unit in arterial smooth muscle), LRRC8A/VRAC, and EGFR (via the EGFR trans/juxtamembrane domain); downstream of Ca2+ activation it drives epithelial Cl-/HCO3- secretion, pacemaker slow-wave activity in ICC, pressure-induced myogenic vasoconstriction in cerebral and pulmonary arteries, pericyte-mediated capillary tone, primary ciliogenesis, radial glial process extension during cortical development, anxiety-related behavior via mHb cholinergic neuron excitability, and keratinocyte wound healing; in cancer cells ANO1 promotes proliferation, survival (via ERK1/2/cyclin D1 induction and Bim suppression), and metastasis (via EGFR/STAT3/ROCK1/moesin phosphorylation), and can also drive ferroptosis resistance through PI3K-Akt/TGF-β/CAF recruitment and lysosomal exocytosis of cytotoxic drugs; in hepatocytes, TMEM16A interacts with VAMP3 (causing its degradation to impair GLUT2 trafficking) and with GPX4 (inducing its ubiquitination to promote ferroptosis), revealing non-channel scaffolding functions."},"narrative":{"mechanistic_narrative":"ANO1 (TMEM16A) is the molecular basis of native Ca2+-activated chloride channel (CaCC) currents and serves as a Ca2+- and voltage-gated anion channel whose activity drives epithelial secretion, smooth muscle and pacemaker excitability, neuronal firing, and developmental morphogenesis [PMID:18724360, PMID:19965375]. Channel gating is tuned at multiple levels: the Ca2+/calmodulin complex dynamically sets the HCO3-/Cl- permeability ratio [PMID:23248295], CaMKII phosphorylation at S528 promotes current rundown (reversed by PP1/PP2A) [PMID:31461344], and sustained activity depends on membrane PI(4,5)P2 with additional modulation by cholesterol and fatty acids [PMID:29277655]. ANO1 is preferentially activated by spatially restricted Ca2+ signals from intracellular release sites rather than bulk cytosolic Ca2+ [PMID:25398532], a logic embodied in defined membrane signaling units — a stable ANO1–CaV1.2–IP3R complex underlying EC-coupling and myogenic tone in arterial smooth muscle [PMID:37702787], coupling to stretch-activated cation channels in cerebral arteries [PMID:22872152], and functional partnership with TRPV4 in gland acinar cells and TRPV3 in keratinocytes that channels store-derived Ca2+ into ANO1-mediated Cl- currents [PMID:29187363, PMID:36690845]. Through these mechanisms ANO1 mediates exocrine Cl-/HCO3- secretion and saliva production [PMID:18724360, PMID:27510033], airway and intestinal mucus secretion [PMID:30586313], pacemaker slow-wave activity in interstitial cells of Cajal [PMID:19965375], pressure-induced vasoconstriction and ischemic pericyte/capillary constriction via a Cl- efflux–depolarization–VGCC amplification loop [PMID:22872152, PMID:35316222], medial habenula cholinergic neuron excitability controlling anxiety behavior [PMID:31782602], and BDNF-driven radial glial process extension during cortical development [PMID:31147466]. ANO1 is also required for CFTR membrane expression and cAMP-activated Cl- secretion through compartmentalized signalosomes containing ADCY1 and EPAC1 [PMID:28963502, PMID:29331508]. In cancer, ANO1 promotes proliferation and survival by driving ERK1/2/cyclin D1 signaling and suppressing Bim [PMID:22564524, PMID:25541940, PMID:28899969] and drives migration/metastasis via an EGFR/STAT3/ROCK1 feedback loop with moesin phosphorylation [PMID:34603794]; it physically associates with EGFR through the EGFR juxtamembrane domain in a reciprocally stabilizing complex [PMID:25823819]. Beyond its channel role, ANO1 performs non-conducting scaffolding functions: in hepatocytes it binds VAMP3 to trigger its degradation and impair GLUT2 trafficking [PMID:32440483] and binds GPX4 to induce its ubiquitination and promote ferroptosis [PMID:36572666]. Rare gain-of-function ANO1 variants with increased Ca2+ sensitivity predispose to moyamoya disease [PMID:37253099].","teleology":[{"year":2008,"claim":"Established the molecular identity of the long-sought calcium-activated chloride channel by showing TMEM16A reconstitutes native CaCC currents and is required for them in vivo.","evidence":"Heterologous expression with whole-cell patch clamp plus RNAi knockdown in mice with saliva readout","pmids":["18724360"],"confidence":"High","gaps":["Did not resolve stoichiometry or the structural basis of Ca2+ gating","Channel pore architecture not defined"]},{"year":2009,"claim":"Mapped ANO1 to apical epithelial membranes and to interstitial cells of Cajal, defining it as the pacemaker CaCC driving rhythmic gut contraction.","evidence":"KO-validated antibody immunolocalization and knockout-mouse gastric contractility assay","pmids":["19965375"],"confidence":"High","gaps":["Did not establish how ICC slow-wave Ca2+ signals are generated upstream","Cell-type specificity of pacemaker function not fully dissected"]},{"year":2012,"claim":"Showed that ANO1 anion selectivity is not fixed but dynamically set by Ca2+/calmodulin, explaining tunable HCO3- versus Cl- permeability.","evidence":"Excised-patch electrophysiology with recombinant calmodulin in HEK293T and native acinar cells","pmids":["23248295"],"confidence":"High","gaps":["CaM binding site on ANO1 not structurally defined","Physiological contexts where selectivity switches occur not enumerated"]},{"year":2012,"claim":"Defined ANO1 as the effector of the myogenic response in cerebral arteries, activated by stretch via local cation-channel Ca2+ rather than L-type channels or store release.","evidence":"RNAi knockdown, inhibitory antibodies, cell-attached patch clamp, pressure myography","pmids":["22872152"],"confidence":"High","gaps":["Identity of the stretch-activated cation channel not established","Molecular coupling between cation channel and ANO1 unresolved"]},{"year":2012,"claim":"Linked ANO1 overexpression to tumor growth through ERK1/2 activation and cyclin D1 induction, opening its oncogenic MAPK axis.","evidence":"Gain/loss-of-function in HNSCC lines, xenografts, MEK/ERK inhibitors and dominant-negative ERK1/2","pmids":["22564524"],"confidence":"Medium","gaps":["Whether channel conductance versus scaffolding drives ERK activation unresolved","Single-lab observation"]},{"year":2013,"claim":"Showed DOG1/ANO1 oncogenic effect in GIST operates through the tumor microenvironment (IGFBP5/IGF axis) rather than direct cell-autonomous growth or KIT signaling.","evidence":"RNAi and inhibitor treatment in GIST xenografts with expression profiling","pmids":["23576565"],"confidence":"Medium","gaps":["Mechanism linking ANO1 to IGFBP5 regulation unknown","In vitro growth effect explicitly negative, leaving channel role unclear"]},{"year":2014,"claim":"Connected ANO1 to G1/S cell-cycle progression and Rb phosphorylation, providing a proliferation mechanism in ICC and cancer cells.","evidence":"Ano1 KO mice, EdU/Ki67, low-Cl- media and Cl- channel blockers with KO controls","pmids":["21940901"],"confidence":"Medium","gaps":["Signal linking Cl- conductance to Rb phosphorylation unresolved","Cl- channel blocker specificity a caveat"]},{"year":2014,"claim":"Identified ANO1 as a primary ciliogenesis factor localized to a pre-ciliary 'nimbus' with Cdc42, Arl13b and exocyst Sec6.","evidence":"Immunofluorescence, shRNA knockdown, pharmacological inhibition, confocal microscopy","pmids":["24694595"],"confidence":"Medium","gaps":["Whether ANO1 channel activity is required for ciliogenesis unclear","Functional interaction with exocyst not biochemically defined"]},{"year":2014,"claim":"Established ANO1 as a phenotypic switch in HNSCC ('grow or go'), with S970 required for EMT and Radixin association but dispensable for proliferation.","evidence":"Proteomic screen, S970A mutant, Radixin co-IP, orthotopic metastasis model, bisulfite sequencing","pmids":["24919570"],"confidence":"Medium","gaps":["How S970 phosphorylation state is controlled unknown","Structural basis of Radixin binding not defined"]},{"year":2014,"claim":"Extended the ERK/cyclin D1 oncogenic mechanism to colorectal cancer, linking ANO1 loss to MEK/ERK suppression and G1/S arrest.","evidence":"shRNA knockdown with migration/invasion assays and MAPK Western blots","pmids":["25541940"],"confidence":"Medium","gaps":["Single knockdown approach","Upstream link from ANO1 to MEK not established"]},{"year":2014,"claim":"Reframed ANO1 gating around localized ER store Ca2+ rather than bulk cytosolic Ca2+, establishing microdomain signaling logic.","evidence":"Co-localization imaging and electrophysiology synthesized across cell types","pmids":["25398532"],"confidence":"Medium","gaps":["Synthesis review rather than single reconstitution","Molecular tethering to IP3R sites not yet defined"]},{"year":2015,"claim":"Showed PKCα mediates purinergic activation of ANO1 Cl- secretion in biliary epithelium, adding a kinase regulatory input.","evidence":"Patch clamp with recombinant PKCα dialysis, PKCα and TMEM16A siRNA","pmids":["26542395"],"confidence":"High","gaps":["PKCα phosphorylation site on ANO1 not identified","Direct versus indirect phosphorylation not distinguished"]},{"year":2015,"claim":"Linked angiotensin-II-induced ANO1 upregulation to VSMC proliferation and hypertension development in vivo.","evidence":"SHR model, siRNA, T16Ainh-A01, primary VSMC culture, blood pressure measurement","pmids":["25739000"],"confidence":"Medium","gaps":["Transcriptional pathway from AngII to ANO1 not defined","Single lab"]},{"year":2016,"claim":"Demonstrated ANO1 transports HCO3- into the pancreatic acinar lumen, buffering luminal pH after zymogen exocytosis.","evidence":"Intraluminal pH measurement in isolated acini with T16inh-A01","pmids":["27510033"],"confidence":"Medium","gaps":["Contribution relative to other transporters not quantified","Pharmacological inhibitor only"]},{"year":2017,"claim":"Established a surprising codependence of CFTR on ANO1, showing ANO1 is required for CFTR membrane expression, cAMP-activated currents, and ER Ca2+ store release.","evidence":"Two tissue-specific Cre-lox KO lines, Ussing chamber, patch clamp, CFTR surface biotinylation","pmids":["28963502"],"confidence":"High","gaps":["Molecular mechanism of CFTR trafficking dependence unresolved","Mechanism of SOcAMPS engagement not detailed"]},{"year":2017,"claim":"Defined the compartmentalized signalosome (GPCR-ADCY1-EPAC1) coordinating ANO1 and CFTR, and showed Golgi-independent ANO1 maturation.","evidence":"GPCR knockdown, ADCY1/EPAC1 localization, patch clamp, Ussing chamber","pmids":["29331508"],"confidence":"Medium","gaps":["Physical scaffold organizing the signalosome not identified","Golgi-independent trafficking route undefined"]},{"year":2017,"claim":"Showed ANO1 promotes cancer survival by suppressing Bim downstream of ERK1/2, an anti-apoptotic mechanism complementing its proliferative role.","evidence":"siRNA, viability/apoptosis assays, xenograft, human HNSCC tissue analysis","pmids":["28899969"],"confidence":"Medium","gaps":["Direct link between ANO1 conductance and ERK/Bim not mechanistically resolved","Single lab"]},{"year":2017,"claim":"Defined PI(4,5)P2 as a required cofactor preventing channel rundown and lipid/cholesterol/fatty-acid modulation of ANO1 gating.","evidence":"Inside-out and whole-cell patch clamp with PI(4,5)P2 depletion/supplementation, cholesterol and fatty acid manipulation","pmids":["29277655"],"confidence":"High","gaps":["PI(4,5)P2 binding site not structurally mapped","Physiological lipid concentrations governing gating not defined"]},{"year":2017,"claim":"Linked ANO1 to VRAC component LRRC8A and to Ca2+-triggered exocytosis, hinting at roles beyond Cl- conductance.","evidence":"Co-IP, LRRC8A siRNA, patch clamp, membrane capacitance and FM4-64 imaging","pmids":["27514381"],"confidence":"Medium","gaps":["Functional significance of ANO1-LRRC8A interaction unclear","Whether ANO1 directly mediates exocytosis not established"]},{"year":2018,"claim":"Established ANO1 as essential for basal ATP-driven mucus secretion in airway and intestine, while showing cholinergic compound exocytosis is ANO1-independent.","evidence":"Two tissue-specific KO lines, inhibitors, siRNA, mucus secretion assays","pmids":["30586313"],"confidence":"High","gaps":["Mechanism coupling ANO1 to mucus granule release not defined","Relationship to the CFTR codependence not integrated"]},{"year":2018,"claim":"Showed TRPV4 functionally feeds ANO1 in gland acinar cells via IP3-dependent Ca2+, contributing to muscarinic and temperature-dependent secretion.","evidence":"TRPV4 KO mice, TRPV4 agonist/antagonist, patch clamp in acinar cells","pmids":["29187363"],"confidence":"Medium","gaps":["Physical TRPV4-ANO1 proximity not established","Single lab"]},{"year":2019,"claim":"Identified ANO1 as required for cholinergic neuron firing in the medial habenula, linking channel function to anxiety and social behavior.","evidence":"Conditional KO, RNAscope, patch clamp, DREADD inhibition, behavioral assays","pmids":["31782602"],"confidence":"High","gaps":["Mechanism by which ANO1 shapes afterhyperpolarization not detailed","Upstream Ca2+ source in mHb neurons not defined"]},{"year":2019,"claim":"Showed ANO1 mediates BDNF-driven radial glial process extension required for proper cortical lamination, defining a developmental role.","evidence":"Ano1 KO mice, cortical layer analysis, knockdown/overexpression, patch clamp, BDNF stimulation","pmids":["31147466"],"confidence":"High","gaps":["Link from BDNF receptor signaling to ANO1 activation not resolved","How Cl- flux drives process extension unclear"]},{"year":2019,"claim":"Identified CaMKII phosphorylation at S528 as a driver of channel rundown counteracted by PP1/PP2A, defining phospho-regulation of gating.","evidence":"Patch clamp in HEK293, CaMKII and phosphatase inhibitors, S528A mutation, ATP-free pipette","pmids":["31461344"],"confidence":"High","gaps":["Physiological triggers of CaMKII-mediated rundown not defined","Whether S528 phosphorylation alters Ca2+ sensitivity directly unclear"]},{"year":2019,"claim":"Identified the transcriptional/epigenetic basis of ANO1 upregulation in gastric cancer via SP1-recruited MLL1 and H3K4me3 at the promoter.","evidence":"ChIP for SP1 and MLL1, H3K4me3 analysis, promoter luciferase, SP1 perturbation","pmids":["30871776"],"confidence":"Medium","gaps":["Whether this axis operates in other cancers untested","Single lab"]},{"year":2020,"claim":"Revealed a non-channel scaffolding function: hepatocyte ANO1 binds and degrades VAMP3, disrupting SNARE complexes and GLUT2 trafficking to drive NAFLD.","evidence":"Hepatocyte-specific KO and transgenic mice, co-IP, SNARE analysis, GLUT2 biotinylation, VAMP3 rescue","pmids":["32440483"],"confidence":"High","gaps":["Mechanism by which ANO1 induces VAMP3 degradation not detailed","Whether channel activity contributes unresolved"]},{"year":2021,"claim":"Defined an EGFR/STAT3/ROCK1 positive-feedback loop in which ANO1 drives metastasis and ROCK1 reciprocally enhances ANO1 via moesin T558 phosphorylation.","evidence":"Migration/invasion assays, patch clamp, ROCK1/RhoA overexpression, moesin phospho-Western, lung metastasis model","pmids":["34603794"],"confidence":"Medium","gaps":["Direct phosphorylation site on ANO1 by ROCK1 not mapped","Single lab"]},{"year":2021,"claim":"Showed ANO1 is the CaCC in type I taste cells, activated by ATP via P2Y receptors, integrating it into taste signaling.","evidence":"Immunohistochemistry, patch clamp in isolated taste cells, ion substitution, Ani-9 blockade","pmids":["34089532"],"confidence":"Medium","gaps":["Functional role of type I cell Cl- currents in taste perception unclear","Single lab"]},{"year":2022,"claim":"Defined a pericyte Cl- efflux–depolarization–VGCC amplification loop by which ANO1 worsens ischemic capillary constriction and pericyte death.","evidence":"Inhibitors, rodent stroke model, two-photon Ca2+/diameter imaging, patient genetics","pmids":["35316222"],"confidence":"High","gaps":["Initial Ca2+ trigger in ischemic pericytes not defined","Translational relevance of patient genetic association limited"]},{"year":2022,"claim":"Revealed a second scaffolding function: ANO1 binds GPX4 to induce its ubiquitination, promoting ferroptosis in hepatic ischemia/reperfusion injury.","evidence":"Hepatocyte-specific KO/overexpression mice, co-IP, ubiquitination assays, ferroptosis modulators, interaction-disruption rescue","pmids":["36572666"],"confidence":"High","gaps":["E3 ligase mediating GPX4 ubiquitination not identified","Apparent opposite ferroptosis role in cancer not reconciled"]},{"year":2022,"claim":"Linked ANO1 to chemoresistance via ROS/TRPML1/β-catenin-MITF-driven lysosomal exocytosis that expels cisplatin from SCCHN cells.","evidence":"Genetic/pharmacological lysosome inhibition, ROS and pathway analysis, cisplatin quantification, PDX model","pmids":["35286200"],"confidence":"Medium","gaps":["How ANO1 initiates lysosomal biogenesis signaling unclear","Single lab"]},{"year":2023,"claim":"Resolved a stable ANO1-CaV1.2-IP3R signaling complex as the molecular EC-coupling unit driving Ca2+ waves and tone in pulmonary arterial smooth muscle.","evidence":"Smooth-muscle-specific KO, co-IP, super-resolution nanomicroscopy, GCaMP imaging, pressure myography","pmids":["37702787"],"confidence":"High","gaps":["Stoichiometry and structural arrangement of the complex unknown","Whether complex composition varies across vascular beds unclear"]},{"year":2023,"claim":"Showed ANO1 promotes immunotherapy resistance by inhibiting ferroptosis via PI3K-Akt and recruiting CAFs through TGF-β, remodeling the tumor microenvironment.","evidence":"Knockdown/inhibition in GI cancer lines, CDX/PDX models, multi-omics, CD8+ T-cell assays","pmids":["37341301"],"confidence":"Medium","gaps":["Direct molecular link from ANO1 to PI3K-Akt not defined","Channel versus scaffolding contribution unresolved"]},{"year":2023,"claim":"Connected ANO1 to human disease by identifying rare gain-of-function variants with increased Ca2+ sensitivity that predispose to moyamoya disease.","evidence":"Exome sequencing, family segregation (LOD 3.3), patch clamp of variants in heterologous cells","pmids":["37253099"],"confidence":"Medium","gaps":["Functional validation across the full variant set limited","Tissue mechanism linking gain-of-function to cerebrovascular pathology undefined"]},{"year":null,"claim":"How ANO1's channel-conducting role is mechanistically distinguished from its non-conducting scaffolding functions (VAMP3/GPX4 degradation, EGFR/Radixin/LRRC8A complexes) within the same protein remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No structure-function separation of channel versus scaffold domains across contexts","Opposing ferroptosis roles in liver versus cancer not reconciled","Tissue-specific partner selection not explained"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0005215","term_label":"transporter activity","supporting_discovery_ids":[0,2,16,20]},{"term_id":"GO:0140299","term_label":"molecular sensor activity","supporting_discovery_ids":[2,3,23]},{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[26,28,30]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[5,14]}],"localization":[{"term_id":"GO:0005886","term_label":"plasma membrane","supporting_discovery_ids":[1,16,30]},{"term_id":"GO:0005929","term_label":"cilium","supporting_discovery_ids":[6]},{"term_id":"GO:0005764","term_label":"lysosome","supporting_discovery_ids":[27]}],"pathway":[{"term_id":"R-HSA-382551","term_label":"Transport of small molecules","supporting_discovery_ids":[0,20]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[3,25,30]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[17,26]},{"term_id":"R-HSA-1643685","term_label":"Disease","supporting_discovery_ids":[4,24,32]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[7,9]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[22]}],"complexes":["ANO1-CaV1.2-IP3R EC-coupling complex","ANO1-EGFR complex","ANO1-CFTR/ADCY1/EPAC1 signalosome"],"partners":["EGFR","CFTR","CAV1.2 (CACNA1C)","ITPR/IP3R","LRRC8A","VAMP3","GPX4","CALM1 (CALMODULIN)"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q5XXA6","full_name":"Anoctamin-1","aliases":["Discovered on gastrointestinal stromal tumors protein 1","Oral cancer overexpressed protein 2","Transmembrane protein 16A","Tumor-amplified and overexpressed sequence 2"],"length_aa":986,"mass_kda":114.1,"function":"Calcium-activated chloride channel (CaCC) (PubMed:20056604, PubMed:22178883, PubMed:22946059, PubMed:32487539). Plays a role in transepithelial anion transport and smooth muscle contraction. Required for the normal functioning of the interstitial cells of Cajal (ICCs) which generate electrical pacemaker activity in gastrointestinal smooth muscles. Acts as a major contributor to basal and stimulated chloride conductance in airway epithelial cells and plays an important role in tracheal cartilage development. Required for CFTR activation by enhancing endoplasmic reticulum Ca(2+) store release and is also required for CFTR membrane expression (PubMed:28963502). Required for basal and ATP-dependent mucus secretion in airways and intestine, probably by controlling exocytosis of mucus-filled granules by providing Ca(2+) to an apical signaling compartment (By similarity). Contributes to airway mucus expression induced by interleukins IL3 and IL8 and by the asthma-associated protein CLCA1 and is required for expression of mucin MUC5AC (PubMed:33026825). However, was shown in another study not to be required for MUC5AC expression (PubMed:31732694). Plays a role in the propagation of Ca(2+) waves in Kolliker's organ in the cochlea and contributes to the refinement of auditory brainstem circuitries prior to hearing onset (By similarity). In vomeronasal sensory neurons, modulates spontaneous firing patterns in the absence of stimuli as well as the firing pattern of pheromone-evoked activity (By similarity). Responsible for calcium-activated chloride channel activity in type I taste cells of the vallate papillae (By similarity). Acts as a heat sensor in nociceptive neurons (By similarity). In dorsal root ganglion neurons, plays a role in mediating non-histaminergic Mas-related G-protein coupled receptor (MRGPR)-dependent itching, acting as a downstream effector of MRGPRs (By similarity). In the developing brain, required for the Ca(2+)-dependent process extension of radial glial cells (By similarity) Calcium-activated chloride channel (CaCC). Contributes to calcium-activated chloride secretion in human sweat gland epithelial cells. Shows increased basal chloride permeability and decreased Ca(2+)-induced chloride permeability Calcium-activated chloride channel (CaCC). Shows increased sensitivity to intracellular Ca(2+)","subcellular_location":"Apical cell membrane; Presynapse","url":"https://www.uniprot.org/uniprotkb/Q5XXA6/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ANO1","classification":"Not Classified","n_dependent_lines":11,"n_total_lines":1208,"dependency_fraction":0.009105960264900662},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/ANO1","total_profiled":1310},"omim":[{"mim_id":"620687","title":"MOYAMOYA DISEASE 7; MYMY7","url":"https://www.omim.org/entry/620687"},{"mim_id":"620045","title":"INTESTINAL DYSMOTILITY SYNDROME; IDMTS","url":"https://www.omim.org/entry/620045"},{"mim_id":"619963","title":"ANOCTAMIN 9; ANO9","url":"https://www.omim.org/entry/619963"},{"mim_id":"610110","title":"ANOCTAMIN 3; ANO3","url":"https://www.omim.org/entry/610110"},{"mim_id":"610108","title":"ANOCTAMIN 1, CALCIUM-ACTIVATED CHLORIDE CHANNEL; ANO1","url":"https://www.omim.org/entry/610108"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Plasma membrane","reliability":"Supported"},{"location":"Nucleoplasm","reliability":"Additional"}],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in many","driving_tissues":[{"tissue":"epididymis","ntpm":81.3},{"tissue":"seminal vesicle","ntpm":83.9}],"url":"https://www.proteinatlas.org/search/ANO1"},"hgnc":{"alias_symbol":["TAOS2","FLJ10261","DOG1"],"prev_symbol":["ORAOV2","TMEM16A"]},"alphafold":{"accession":"Q5XXA6","domains":[{"cath_id":"-","chopping":"177-224","consensus_level":"medium","plddt":66.9479,"start":177,"end":224},{"cath_id":"-","chopping":"318-454_508-697_720-812","consensus_level":"medium","plddt":85.874,"start":318,"end":812},{"cath_id":"3.30.70","chopping":"61-72_121-175_228-284","consensus_level":"medium","plddt":83.5373,"start":61,"end":284},{"cath_id":"1.20.5","chopping":"917-952","consensus_level":"medium","plddt":82.1314,"start":917,"end":952}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q5XXA6","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q5XXA6-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q5XXA6-F1-predicted_aligned_error_v6.png","plddt_mean":76.62},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ANO1","jax_strain_url":"https://www.jax.org/strain/search?query=ANO1"},"sequence":{"accession":"Q5XXA6","fasta_url":"https://rest.uniprot.org/uniprotkb/Q5XXA6.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q5XXA6/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q5XXA6"}},"corpus_meta":[{"pmid":"18724360","id":"PMC_18724360","title":"TMEM16A confers receptor-activated calcium-dependent chloride conductance.","date":"2008","source":"Nature","url":"https://pubmed.ncbi.nlm.nih.gov/18724360","citation_count":1106,"is_preprint":false},{"pmid":"15215166","id":"PMC_15215166","title":"The novel marker, DOG1, is expressed ubiquitously in gastrointestinal stromal tumors irrespective of KIT or PDGFRA mutation status.","date":"2004","source":"The American journal of pathology","url":"https://pubmed.ncbi.nlm.nih.gov/15215166","citation_count":477,"is_preprint":false},{"pmid":"19965375","id":"PMC_19965375","title":"Studies on expression and function of the TMEM16A calcium-activated chloride channel.","date":"2009","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/19965375","citation_count":263,"is_preprint":false},{"pmid":"22564524","id":"PMC_22564524","title":"TMEM16A induces MAPK and contributes directly to tumorigenesis and cancer progression.","date":"2012","source":"Cancer research","url":"https://pubmed.ncbi.nlm.nih.gov/22564524","citation_count":259,"is_preprint":false},{"pmid":"22460810","id":"PMC_22460810","title":"DOG1: a novel marker of salivary acinar and intercalated duct differentiation.","date":"2012","source":"Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc","url":"https://pubmed.ncbi.nlm.nih.gov/22460810","citation_count":172,"is_preprint":false},{"pmid":"29875377","id":"PMC_29875377","title":"Control of seed dormancy and germination by DOG1-AHG1 PP2C phosphatase complex via binding to heme.","date":"2018","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/29875377","citation_count":151,"is_preprint":false},{"pmid":"12739008","id":"PMC_12739008","title":"FLJ10261 gene, located within the CCND1-EMS1 locus on human chromosome 11q13, encodes the eight-transmembrane protein homologous to C12orf3, C11orf25 and FLJ34272 gene products.","date":"2003","source":"International journal of oncology","url":"https://pubmed.ncbi.nlm.nih.gov/12739008","citation_count":146,"is_preprint":false},{"pmid":"23248295","id":"PMC_23248295","title":"Dynamic modulation of ANO1/TMEM16A HCO3(-) permeability by Ca2+/calmodulin.","date":"2012","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/23248295","citation_count":139,"is_preprint":false},{"pmid":"20716168","id":"PMC_20716168","title":"DOG1 and CD117 are the antibodies of choice in the diagnosis of gastrointestinal stromal tumours.","date":"2010","source":"Histopathology","url":"https://pubmed.ncbi.nlm.nih.gov/20716168","citation_count":135,"is_preprint":false},{"pmid":"28893247","id":"PMC_28893247","title":"Cell-specific mechanisms of TMEM16A Ca2+-activated chloride channel in cancer.","date":"2017","source":"Molecular 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expression suppresses growth and invasion in human colorectal cancer cells.","date":"2014","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/25541940","citation_count":105,"is_preprint":false},{"pmid":"31279157","id":"PMC_31279157","title":"The multifaceted role of TMEM16A in cancer.","date":"2019","source":"Cell calcium","url":"https://pubmed.ncbi.nlm.nih.gov/31279157","citation_count":103,"is_preprint":false},{"pmid":"30515811","id":"PMC_30515811","title":"Recent advances in TMEM16A: Structure, function, and disease.","date":"2018","source":"Journal of cellular physiology","url":"https://pubmed.ncbi.nlm.nih.gov/30515811","citation_count":103,"is_preprint":false},{"pmid":"26305547","id":"PMC_26305547","title":"Inhibition of Calcium-Activated Chloride Channel ANO1/TMEM16A Suppresses Tumor Growth and Invasion in Human Lung Cancer.","date":"2015","source":"PloS 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knockdown of mouse Ano1 markedly reduced native Ca2+-activated chloride currents and saliva production in mice.\",\n      \"method\": \"Heterologous expression, whole-cell patch clamp, RNAi knockdown in mice with functional readout (saliva production)\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — reconstitution of channel activity in heterologous system combined with in vivo knockdown phenotype; foundational paper widely replicated\",\n      \"pmids\": [\"18724360\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"TMEM16A localizes to apical membranes of epithelial cells in exocrine glands and trachea, to airway and reproductive-tract smooth muscle cells, and to interstitial cells of Cajal (ICC) in the GI tract (but not GI smooth muscle); TMEM16A knockout mice show diminished rhythmic gastric smooth muscle contraction, establishing its role as the pacemaker CaCC in ICC.\",\n      \"method\": \"TMEM16A-specific antibody validated in knockout mice (immunofluorescence, Western blot), knockout mouse contractility assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — subcellular localization directly validated by KO-confirmed antibody; functional KO phenotype with specific contractility readout\",\n      \"pmids\": [\"19965375\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"The anion selectivity (HCO3-/Cl- permeability ratio) of ANO1 is dynamically regulated by the Ca2+/calmodulin complex: calmodulin physically interacts with ANO1 in a [Ca2+]i-dependent manner, and addition of recombinant calmodulin to the cytosolic side of excised patches reversibly increased PHCO3/PCl.\",\n      \"method\": \"Whole-cell and excised-patch electrophysiology in HEK293T cells; recombinant calmodulin application; native submandibular gland acinar cells\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — direct reconstitution in excised patches with recombinant calmodulin, multiple orthogonal methods in one study\",\n      \"pmids\": [\"23248295\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ANO1/TMEM16A channels in arterial myocytes are activated by membrane stretch (cell swelling/pressure) via a local Ca2+ signal generated by nonselective cation channels (blocked by Gd3+ and SKF-96365, but not by L-type Ca2+ channel blocker nimodipine or store-depletion with thapsigargin); TMEM16A knockdown reduced pressure-induced membrane depolarization and vasoconstriction (myogenic response) without altering K+-induced constriction.\",\n      \"method\": \"RNAi-mediated TMEM16A knockdown, inhibitory antibodies, cell-attached patch clamp, pressure myography in cerebral arteries\",\n      \"journal\": \"Circulation research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal inhibitory antibody + RNAi knockdown + pressure myography; multiple orthogonal methods, specific phenotypic readout\",\n      \"pmids\": [\"22872152\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"TMEM16A overexpression promotes tumor growth via activation of ERK1/2 and induction of cyclin D1 (MAPK pathway); pharmacologic MEK/ERK inhibition and dominant-negative ERK1/2 constructs abrogated the TMEM16A-mediated growth effect.\",\n      \"method\": \"Stable overexpression and siRNA knockdown in HNSCC cell lines; in vivo xenograft; MEK/ERK inhibitors; dominant-negative ERK1/2; Western blot for p-ERK, cyclin D1\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic gain/loss-of-function with pharmacological pathway validation; single lab but multiple orthogonal approaches\",\n      \"pmids\": [\"22564524\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ANO1/TMEM16A interacts with EGFR via the EGFR trans/juxtamembrane domain; ANO1 expression affects EGFR protein stability, while EGFR signaling elevates ANO1 protein levels, establishing a reciprocal functional and regulatory complex that jointly controls HNSCC cell proliferation.\",\n      \"method\": \"Unbiased proteomics screen, structural EGFR and ANO1 mutant analysis, co-immunoprecipitation, Western blot\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — proteomics pulldown plus structural mutant mapping of interaction domain; single lab\",\n      \"pmids\": [\"25823819\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ANO1/TMEM16A is localized in the primary cilium before and during ciliogenesis; before ciliogenesis, ANO1 organizes into a torus-shaped 'nimbus' structure co-enriched with Cdc42, Arl13b, and exocyst component Sec6; pharmacological block or shRNA knockdown of ANO1 interferes with primary ciliogenesis.\",\n      \"method\": \"Immunofluorescence, shRNA knockdown, pharmacological inhibition, confocal microscopy\",\n      \"journal\": \"Molecular biology of the cell\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct localization with functional KD phenotype; single lab, two methods\",\n      \"pmids\": [\"24694595\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ANO1 regulates cell cycle progression at the G1/S transition: Cl- channel blockers decreased proliferation of ICC and CFPAC-1 cells expressing ANO1, with reduced effect in Ano1-/- cultures; Ano1 knockout mice show fewer proliferating ICC and less phosphorylated retinoblastoma protein.\",\n      \"method\": \"Ano1 knockout mice, Ki67 immunoreactivity, EdU incorporation, cell-cycle analysis, low-Cl- media experiments, Cl- channel blockers\",\n      \"journal\": \"American journal of physiology. Gastrointestinal and liver physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KO mouse + in vitro Cl- channel blockers with KO-comparison controls; multiple readouts in one study\",\n      \"pmids\": [\"21940901\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"DOG1/ANO1 silencing in GIST xenografts delays tumor growth in vivo and upregulates IGFBP5 (an antiangiogenic factor) in explanted tumors; DOG1 silencing or pharmacologic inhibition did not alter cell growth or KIT signaling in vitro, indicating the oncogenic role of DOG1 involves modulation of the IGF/IGFR axis in the tumor microenvironment.\",\n      \"method\": \"RNAi knockdown, DOG1 inhibitor treatment, GIST xenografts, expression profiling, IGFBP5 mRNA quantification\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vivo xenograft with transcriptome profiling showing pathway; in vitro results explicitly negative for direct growth effect\",\n      \"pmids\": [\"23576565\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"TMEM16A depletion in colorectal cancer SW620 cells suppresses growth, migration, and invasion; mechanistically, TMEM16A knockdown reduces phospho-MEK, phospho-ERK1/2, and cyclin D1 and causes G1/S cell-cycle arrest.\",\n      \"method\": \"shRNA knockdown, MTT, wound-healing, transwell assays, flow cytometry, Western blot for MAPK pathway components\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — clean KD with defined cellular and molecular phenotype; single lab, single knockdown approach\",\n      \"pmids\": [\"25541940\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ANO1 channel activity is coupled to localized Ca2+ signals from intracellular Ca2+ store release sites (IP3R); in multiple cell types, ANO1 preferentially co-localizes with Ca2+ release sites of the ER rather than responding to bulk cytoplasmic Ca2+.\",\n      \"method\": \"Co-localization imaging, electrophysiology showing differential activation by local vs. global Ca2+ signals (reviewed/synthesized from multiple primary studies)\",\n      \"journal\": \"The Journal of physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — localization data from multiple independent groups; primarily a synthesis, but individual data support co-localization with functional implication\",\n      \"pmids\": [\"25398532\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"PKCα regulates TMEM16A-mediated Cl- secretion in biliary epithelial cells: extracellular ATP triggers PKCα translocation to the plasma membrane; intracellular dialysis with recombinant PKCα activates Cl- currents with TMEM16A biophysical properties in control cells but not after TMEM16A siRNA knockdown.\",\n      \"method\": \"Whole-cell patch clamp, recombinant PKCα intracellular dialysis, PKCα siRNA and pharmacologic inhibition, TMEM16A siRNA\",\n      \"journal\": \"American journal of physiology. Gastrointestinal and liver physiology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — reconstitution with recombinant PKCα in patch pipette plus KD controls; multiple orthogonal approaches in single study\",\n      \"pmids\": [\"26542395\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"ANO1 overexpression in spontaneously hypertensive rats (SHRs) contributes to hypertension; angiotensin II upregulates ANO1 expression in vascular smooth muscle cells (VSMCs), and ANO1 protein level and activity positively correlate with VSMC proliferation; siRNA knockdown of ANO1 prevented hypertensive development.\",\n      \"method\": \"SHR model, siRNA knockdown, ANO1 inhibitor (T16Ainh-A01), angiotensin II stimulation of primary VSMCs, Western blot, blood pressure measurement\",\n      \"journal\": \"Journal of molecular and cellular cardiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vivo RNAi + pharmacological inhibition + primary cell culture; single lab, multiple methods\",\n      \"pmids\": [\"25739000\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"TMEM16A expression shifts HNSCC cells between proliferative and metastatic phenotypes ('grow or go'); S970 residue of TMEM16A is required for effects on cell size and epithelial-to-mesenchymal transition (EMT), and mediates association with Radixin (an actin-scaffolding protein implicated in EMT); S970A mutation does not disrupt TMEM16A-driven proliferation; promoter methylation mediates TMEM16A downregulation during EMT transition.\",\n      \"method\": \"Proteomic screens, stable TMEM16A knockdown, orthotopic mouse metastasis model, S970A point mutation, co-immunoprecipitation with Radixin, bisulfite sequencing, patient tissue analysis\",\n      \"journal\": \"Clinical cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — point mutant plus co-IP plus in vivo model; single lab, multiple orthogonal methods\",\n      \"pmids\": [\"24919570\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Tissue-specific TMEM16A knockout in mouse intestine and airways not only eliminates Ca2+-activated Cl- currents but also abrogates CFTR-mediated Cl- secretion and cAMP-activated currents; mechanistically, TMEM16A is required for ER Ca2+ store release (engaging SOcAMPS) and for proper membrane expression of CFTR.\",\n      \"method\": \"Tissue-specific Cre-lox KO mice (TMEM16Aflox/flox × FoxJ1-Cre, Vil1-Cre), Ussing chamber, whole-cell patch clamp, surface biotinylation for CFTR membrane expression\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — tissue-specific KO with two independent Cre lines; Ussing chamber + patch clamp + membrane trafficking; multiple orthogonal methods\",\n      \"pmids\": [\"28963502\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TMEM16A and CFTR functional coupling in airway epithelial cells is mediated by a compartmentalized signalosome: GPCRs recruit Ca2+-sensitive adenylyl cyclase type 1 (ADCY1) and EPAC1 to membrane domains containing GPCRs, CFTR, and TMEM16A, producing compartmentalized Ca2+ and cAMP signals; maturation and membrane trafficking of TMEM16A can occur independently of the Golgi.\",\n      \"method\": \"GPCR knockdown, ADCY1 and EPAC1 localization studies, Western blot, patch clamp, Ussing chamber\",\n      \"journal\": \"Cellular signalling\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — GPCR knockdown plus compartmentalization imaging plus electrophysiology; single lab\",\n      \"pmids\": [\"29331508\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TMEM16A is regulated by phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2): depletion of PI(4,5)P2 causes Ca2+-dependent current decline; supplying PI(4,5)P2 to inside-out patches attenuates channel rundown; cholesterol modulates TMEM16A activity through both PI(4,5)P2-dependent and -independent mechanisms; fatty acids (stearic, arachidonic, oleic, DHA, EPA) and phosphatidylserine inhibit TMEM16A in a dose- and voltage-dependent manner via membrane-delimited protein-lipid interaction.\",\n      \"method\": \"Patch clamp (whole-cell and inside-out), PI(4,5)P2 depletion (rapamycin system), methyl-β-cyclodextrin cholesterol manipulation, fatty acid application, surface biotinylation\",\n      \"journal\": \"Biochimica et biophysica acta. Molecular and cell biology of lipids\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — inside-out patch reconstitution with PI(4,5)P2 plus multiple lipid manipulations with surface localization controls; multiple orthogonal approaches\",\n      \"pmids\": [\"29277655\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TMEM16A/ANO1 promotes tumor cell survival by inhibiting apoptosis via downregulation of Bim expression; TMEM16A expression correlates with increased ERK1/2 activity and reduced Bim in human HNSCC.\",\n      \"method\": \"siRNA knockdown, in vitro viability/apoptosis assays, in vivo xenograft, Western blot (Bim, p-ERK1/2), human HNSCC tissue analysis\",\n      \"journal\": \"Clinical cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KD + in vivo + human tissue; single lab, multiple methods\",\n      \"pmids\": [\"28899969\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TMEM16A and LRRC8A (VRAC) can be co-immunoprecipitated; loss of LRRC8A attenuates Ca2+-activated Cl- currents and ANO1-dependent membrane capacitance changes; ANO1-expressing cells show increased membrane capacitance and FM4-64 membrane binding upon intracellular Ca2+ elevation, suggesting a role for ANO1 in exocytosis.\",\n      \"method\": \"Co-immunoprecipitation, LRRC8A siRNA knockdown, patch clamp, membrane capacitance measurements, FM4-64 fluorescence\",\n      \"journal\": \"Pflugers Archiv : European journal of physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP plus functional KD with multiple electrophysiological readouts; single lab\",\n      \"pmids\": [\"27514381\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"TMEM16A is essential for basal (ATP-driven) mucus secretion in airways and intestine: ciliated-cell-specific and intestinal-epithelial-specific TMEM16A knockout mice show mucus accumulation in airway club cells and intestinal goblet cells; acute ATP-induced mucus secretion is abrogated by TMEM16A KO in ciliated cells; cholinergic mucus secretion by compound exocytosis is independent of TMEM16A.\",\n      \"method\": \"Tissue-specific KO mice (TMEM16Aflox/flox × FoxJ1-Cre, Vil1-Cre), TMEM16A inhibitors, siRNA knockdown, mucus secretion assays, IL-8 measurement\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — two independent tissue-specific KO lines with specific mucus secretion readouts; also dissects cholinergic vs. ATP-driven pathways\",\n      \"pmids\": [\"30586313\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ANO1/TMEM16A transports HCO3- into pancreatic acinar cell lumen under physiological CCK stimulation; T16inh-A01 blockade significantly increases luminal acidification after zymogen granule exocytosis; in acute pancreatitis model, ANO1 acts to attenuate luminal pH shifts.\",\n      \"method\": \"Freshly isolated pancreatic acini with preserved luminal structure, intraluminal pH measurement (fluorescent indicator), specific TMEM16A inhibitor T16inh-A01\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct functional measurement in native tissue with selective pharmacological inhibition; single lab\",\n      \"pmids\": [\"27510033\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"TMEM16A expression in medial habenula (mHb) cholinergic neurons is required for normal action potential firing: conditional knockout of TMEM16A in mHb cholinergic neurons reduces after-hyperpolarization slope and firing frequency, decreases activity of the interpeduncular nucleus, and produces anxiety-related behaviors and deficits in social interaction.\",\n      \"method\": \"Conditional knockout mice (cKO), RNAscope in situ hybridization, immunohistochemistry, whole-cell patch clamp electrophysiology, DREADD chemogenetic inhibition, behavioral assays\",\n      \"journal\": \"EMBO reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — cell-specific conditional KO with electrophysiology + chemogenetic validation + behavioral phenotype; multiple orthogonal methods\",\n      \"pmids\": [\"31782602\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ANO1/TMEM16A regulates process extension of radial glial cells (RGCs) in the developing brain: ANO1 is expressed and functionally active in RGCs; knockdown suppresses process extension while overexpression stimulates it; BDNF activates ANO1 which is required for BDNF-induced process extension; Ano1-deficient mice show disrupted cortical layers and reduced cortical thickness.\",\n      \"method\": \"Ano1 knockout mice, cortical layer analysis, shRNA knockdown, ANO1 overexpression, patch-clamp electrophysiology in RGCs, BDNF stimulation assays\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — KO mice + gain/loss-of-function + electrophysiology + in vivo cortical layering phenotype; multiple orthogonal methods\",\n      \"pmids\": [\"31147466\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"CaMKII phosphorylates TMEM16A, specifically at serine 528, to promote channel rundown; mutation of S528A attenuates TMEM16A rundown similarly to CaMKII inhibitors; PP1/PP2A phosphatases counteract this effect. ATP-dependent CaMKII activity drives current decay.\",\n      \"method\": \"Whole-cell patch clamp in HEK293 cells expressing mouse TMEM16A; CaMKII inhibitors (AIP, KN-93); PP1/PP2A inhibitors (okadaic acid, cantharidin); S528A point mutation; ATP-free pipette solutions\",\n      \"journal\": \"American journal of physiology. Cell physiology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — site-directed mutagenesis (S528A) combined with selective kinase/phosphatase inhibitors and reconstitution in HEK cells; multiple orthogonal pharmacological/genetic approaches\",\n      \"pmids\": [\"31461344\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"TMEM16A activation promotes breast cancer cell migration and invasion; mechanistically, TMEM16A activates EGFR/STAT3/ROCK1 signaling, and ROCK1 in turn enhances TMEM16A channel activity via phosphorylation of moesin at T558, creating a positive feedback loop.\",\n      \"method\": \"Wound-healing and transwell assays, whole-cell patch clamp, ROCK1/RhoA overexpression, moesin T558 phosphorylation Western blot, mouse lung metastasis model\",\n      \"journal\": \"Journal of advanced research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — patch clamp for channel activity + specific phosphorylation site identification + in vivo metastasis model; single lab\",\n      \"pmids\": [\"34603794\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Pericyte TMEM16A amplifies capillary constriction after ischemia: a small rise in [Ca2+]i activates TMEM16A-dependent Cl- efflux, depolarizing pericytes and opening voltage-gated Ca2+ channels to amplify [Ca2+]i further; TMEM16A inhibition slows ischemia-evoked pericyte [Ca2+]i rise, capillary constriction, and pericyte death in a rodent stroke model.\",\n      \"method\": \"TMEM16A inhibitors, rodent stroke model, live two-photon imaging of [Ca2+]i and capillary diameter, genetic analysis of TMEM16A expression in patient stroke recovery\",\n      \"journal\": \"The Journal of clinical investigation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — pharmacological inhibition with live imaging + in vivo stroke model + defined Ca2+-Cl- feedback mechanism; multiple orthogonal approaches\",\n      \"pmids\": [\"35316222\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"TMEM16A interacts with GPX4 to induce GPX4 ubiquitination and degradation, thereby enhancing ferroptosis in hepatocytes; disruption of the TMEM16A-GPX4 interaction abrogates GPX4 ubiquitination, ferroptosis, and hepatic ischemia/reperfusion injury; hepatocyte-specific TMEM16A KO reduces I/R injury in mice.\",\n      \"method\": \"Hepatocyte-specific TMEM16A KO and overexpression transgenic mice, co-immunoprecipitation, ubiquitination assays, ferroptosis inducers/inhibitors, in vitro hypoxia/reoxygenation model\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — tissue-specific KO + gain-of-function + co-IP + ubiquitination assay + rescue by disrupting interaction; multiple orthogonal methods\",\n      \"pmids\": [\"36572666\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"TMEM16A overexpression promotes lysosomal biogenesis and exocytosis via a pathway requiring ROS, TRPML1, and β-catenin–MITF signaling, enabling expulsion of intracellular cisplatin and contributing to cisplatin resistance in SCCHN.\",\n      \"method\": \"Genetic and pharmacological (hydroxychloroquine) lysosomal inhibition, ROS measurement, TRPML1 and β-catenin pathway analysis, cisplatin quantification, murine SCCHN PDX model\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple genetic and pharmacological perturbations with mechanistic pathway mapping; in vivo PDX model; single lab\",\n      \"pmids\": [\"35286200\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Hepatocyte TMEM16A interacts with VAMP3 to induce VAMP3 degradation, suppressing VAMP3/syntaxin 4 and VAMP3/SNAP23 SNARE complexes; this impairs GLUT2 translocation to the plasma membrane and hepatic glucose uptake, contributing to NAFLD; VAMP3 overexpression reverses TMEM16A-induced metabolic dysfunction.\",\n      \"method\": \"Hepatocyte-specific TMEM16A KO and transgenic mice, co-immunoprecipitation, VAMP3/syntaxin4/SNAP23 complex analysis, GLUT2 surface biotinylation, glucose uptake assays, VAMP3 overexpression/knockdown rescue experiments\",\n      \"journal\": \"Advanced science\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — tissue-specific KO + gain-of-function + co-IP + SNARE complex analysis + GLUT2 trafficking with rescue experiments; multiple orthogonal methods\",\n      \"pmids\": [\"32440483\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"TRPV4 functionally interacts with ANO1 in salivary and lacrimal gland acinar cells: TRPV4 activation increases [Ca2+]i via an IP3-dependent mechanism and evokes ANO1-mediated chloride currents and acinar cell shrinkage; TRPV4-deficient mice and TRPV4 antagonist treatment reduce muscarinic salivation and lacrimation; temperature dependence of muscarinic salivation depends mainly on TRPV4.\",\n      \"method\": \"Patch clamp, TRPV4 knockout mice, TRPV4-specific activator (GSK1016790A) and antagonist (HC-067047), isolated acinar cells from salivary and lacrimal glands\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — TRPV4 KO mice + pharmacological tools + patch clamp; functional interaction established; single lab\",\n      \"pmids\": [\"29187363\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ANO1, CaV1.2, and IP3R form a stable localized signaling complex in pulmonary arterial smooth muscle cell plasma membrane: co-immunoprecipitation with anti-ANO1 antibody pulls down both CaV1.2 and IP3R; co-assembly confirmed by confocal and superresolution nanomicroscopy; smooth muscle-specific ANO1 ablation equally abolishes 5-HT-induced Ca2+ waves and tone as CaV1.2 or IP3R inhibition.\",\n      \"method\": \"Smooth muscle-specific ANO1 KO, co-immunoprecipitation, confocal and superresolution nanomicroscopy, pharmacological inhibition of ANO1/CaV1.2/IP3R, GCaMP3/6 Ca2+ imaging, pressure myography\",\n      \"journal\": \"The Journal of general physiology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — co-IP + super-resolution nanomicroscopy + tissue-specific KO + Ca2+ imaging + pressure myography; multiple rigorous orthogonal methods\",\n      \"pmids\": [\"37702787\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ANO1 inhibits cancer ferroptosis through PI3K-Akt signaling and promotes TGF-β release to recruit cancer-associated fibroblasts, thereby remodeling the tumor immune microenvironment and generating resistance to anti-PD-1 immunotherapy; ANO1 knockdown or inhibition enhances immunotherapeutic effectiveness.\",\n      \"method\": \"ANO1 knockdown and inhibition in multiple GI cancer cell lines, CDX and PDX mouse models, multi-omics study, TGF-β and PI3K-Akt pathway analysis, CD8+ T cell activity assays\",\n      \"journal\": \"Advanced science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KD + inhibition + in vivo models + pathway analysis; single study but multiple orthogonal approaches\",\n      \"pmids\": [\"37341301\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"Rare gain-of-function variants in ANO1 (including p.Met658Val) predispose to moyamoya disease; patch-clamp recordings of these variants show increased sensitivity to intracellular Ca2+.\",\n      \"method\": \"Exome sequencing, family-based segregation analysis (LOD score 3.3), patch-clamp electrophysiology of ANO1 variants in heterologous expression\",\n      \"journal\": \"Brain\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Weak — patch-clamp reconstitution with mutagenesis, but single study; functional validation of multiple variants is limited\",\n      \"pmids\": [\"37253099\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SP1 transcription factor increases ANO1 transcription in gastric cancer by recruiting MLL1 to the ANO1 promoter region, facilitating H3K4 trimethylation and subsequently promoting ANO1 expression.\",\n      \"method\": \"ChIP for SP1 and MLL1 at ANO1 promoter, H3K4me3 Western blot/ChIP, SP1 knockdown/overexpression, ANO1 promoter luciferase assay\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP for both SP1 and MLL1 plus H3K4me3 at the ANO1 promoter; multiple chromatin methods; single lab\",\n      \"pmids\": [\"30871776\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"TRPV3 functionally interacts with ANO1 in skin keratinocytes: TRPV3 activation evokes ANO1-mediated Cl- currents; TRPV3 blocker, ANO1 blocker, or low-Cl- medium inhibit keratinocyte migration and proliferation through p38 phosphorylation and cell cycle arrest, implicating chloride influx via ANO1 in wound healing.\",\n      \"method\": \"Patch clamp in NHEKs and mouse keratinocytes, TRPV3 and ANO1 pharmacological blockers, in vitro wound-healing assay, p38 phosphorylation Western blot\",\n      \"journal\": \"Communications biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — patch clamp + pharmacological blockade + wound-healing assay + signaling readout; single lab\",\n      \"pmids\": [\"36690845\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"TMEM16A is functionally expressed in type I taste bud cells (but not type II or III); ATP (released by type II cells) activates Ca2+-activated Cl- currents through TMEM16A in type I cells via P2Y purinergic receptors; these currents are blocked by the selective inhibitor Ani-9.\",\n      \"method\": \"Immunohistochemistry, whole-cell patch clamp in isolated taste cells, ion substitution experiments, selective TMEM16A blocker Ani-9, ATP stimulation\",\n      \"journal\": \"The Journal of physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct electrophysiology in native cells with selective pharmacological tool + immunolocalization; single lab\",\n      \"pmids\": [\"34089532\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ANO1 (TMEM16A) is a homodimeric, eight-to-ten-transmembrane-domain Ca2+-activated chloride channel that forms the molecular basis of native CaCC currents in secretory epithelia, smooth muscle, interstitial cells of Cajal, sensory neurons, and central neurons; it is gated directly by intracellular Ca2+ binding and by voltage, with its HCO3-/Cl- permeability ratio dynamically tuned by the Ca2+/calmodulin complex, its activity regulated by CaMKII-mediated phosphorylation at S528 (promoting rundown, reversed by PP1/PP2A), and its gating sustained by membrane PI(4,5)P2 and modulated by cholesterol and fatty acids; ANO1 is physically and functionally coupled to TRPV-family Ca2+ entry channels (TRPV3, TRPV4), IP3Rs and CaV1.2 (forming a localized EC-coupling unit in arterial smooth muscle), LRRC8A/VRAC, and EGFR (via the EGFR trans/juxtamembrane domain); downstream of Ca2+ activation it drives epithelial Cl-/HCO3- secretion, pacemaker slow-wave activity in ICC, pressure-induced myogenic vasoconstriction in cerebral and pulmonary arteries, pericyte-mediated capillary tone, primary ciliogenesis, radial glial process extension during cortical development, anxiety-related behavior via mHb cholinergic neuron excitability, and keratinocyte wound healing; in cancer cells ANO1 promotes proliferation, survival (via ERK1/2/cyclin D1 induction and Bim suppression), and metastasis (via EGFR/STAT3/ROCK1/moesin phosphorylation), and can also drive ferroptosis resistance through PI3K-Akt/TGF-β/CAF recruitment and lysosomal exocytosis of cytotoxic drugs; in hepatocytes, TMEM16A interacts with VAMP3 (causing its degradation to impair GLUT2 trafficking) and with GPX4 (inducing its ubiquitination to promote ferroptosis), revealing non-channel scaffolding functions.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ANO1 (TMEM16A) is the molecular basis of native Ca2+-activated chloride channel (CaCC) currents and serves as a Ca2+- and voltage-gated anion channel whose activity drives epithelial secretion, smooth muscle and pacemaker excitability, neuronal firing, and developmental morphogenesis [#0, #1]. Channel gating is tuned at multiple levels: the Ca2+/calmodulin complex dynamically sets the HCO3-/Cl- permeability ratio [#2], CaMKII phosphorylation at S528 promotes current rundown (reversed by PP1/PP2A) [#23], and sustained activity depends on membrane PI(4,5)P2 with additional modulation by cholesterol and fatty acids [#16]. ANO1 is preferentially activated by spatially restricted Ca2+ signals from intracellular release sites rather than bulk cytosolic Ca2+ [#10], a logic embodied in defined membrane signaling units \\u2014 a stable ANO1\\u2013CaV1.2\\u2013IP3R complex underlying EC-coupling and myogenic tone in arterial smooth muscle [#30], coupling to stretch-activated cation channels in cerebral arteries [#3], and functional partnership with TRPV4 in gland acinar cells and TRPV3 in keratinocytes that channels store-derived Ca2+ into ANO1-mediated Cl- currents [#29, #34]. Through these mechanisms ANO1 mediates exocrine Cl-/HCO3- secretion and saliva production [#0, #20], airway and intestinal mucus secretion [#19], pacemaker slow-wave activity in interstitial cells of Cajal [#1], pressure-induced vasoconstriction and ischemic pericyte/capillary constriction via a Cl- efflux\\u2013depolarization\\u2013VGCC amplification loop [#3, #25], medial habenula cholinergic neuron excitability controlling anxiety behavior [#21], and BDNF-driven radial glial process extension during cortical development [#22]. ANO1 is also required for CFTR membrane expression and cAMP-activated Cl- secretion through compartmentalized signalosomes containing ADCY1 and EPAC1 [#14, #15]. In cancer, ANO1 promotes proliferation and survival by driving ERK1/2/cyclin D1 signaling and suppressing Bim [#4, #9, #17] and drives migration/metastasis via an EGFR/STAT3/ROCK1 feedback loop with moesin phosphorylation [#24]; it physically associates with EGFR through the EGFR juxtamembrane domain in a reciprocally stabilizing complex [#5]. Beyond its channel role, ANO1 performs non-conducting scaffolding functions: in hepatocytes it binds VAMP3 to trigger its degradation and impair GLUT2 trafficking [#28] and binds GPX4 to induce its ubiquitination and promote ferroptosis [#26]. Rare gain-of-function ANO1 variants with increased Ca2+ sensitivity predispose to moyamoya disease [#32].\",\n  \"teleology\": [\n    {\n      \"year\": 2008,\n      \"claim\": \"Established the molecular identity of the long-sought calcium-activated chloride channel by showing TMEM16A reconstitutes native CaCC currents and is required for them in vivo.\",\n      \"evidence\": \"Heterologous expression with whole-cell patch clamp plus RNAi knockdown in mice with saliva readout\",\n      \"pmids\": [\"18724360\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not resolve stoichiometry or the structural basis of Ca2+ gating\", \"Channel pore architecture not defined\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Mapped ANO1 to apical epithelial membranes and to interstitial cells of Cajal, defining it as the pacemaker CaCC driving rhythmic gut contraction.\",\n      \"evidence\": \"KO-validated antibody immunolocalization and knockout-mouse gastric contractility assay\",\n      \"pmids\": [\"19965375\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not establish how ICC slow-wave Ca2+ signals are generated upstream\", \"Cell-type specificity of pacemaker function not fully dissected\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Showed that ANO1 anion selectivity is not fixed but dynamically set by Ca2+/calmodulin, explaining tunable HCO3- versus Cl- permeability.\",\n      \"evidence\": \"Excised-patch electrophysiology with recombinant calmodulin in HEK293T and native acinar cells\",\n      \"pmids\": [\"23248295\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"CaM binding site on ANO1 not structurally defined\", \"Physiological contexts where selectivity switches occur not enumerated\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Defined ANO1 as the effector of the myogenic response in cerebral arteries, activated by stretch via local cation-channel Ca2+ rather than L-type channels or store release.\",\n      \"evidence\": \"RNAi knockdown, inhibitory antibodies, cell-attached patch clamp, pressure myography\",\n      \"pmids\": [\"22872152\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Identity of the stretch-activated cation channel not established\", \"Molecular coupling between cation channel and ANO1 unresolved\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Linked ANO1 overexpression to tumor growth through ERK1/2 activation and cyclin D1 induction, opening its oncogenic MAPK axis.\",\n      \"evidence\": \"Gain/loss-of-function in HNSCC lines, xenografts, MEK/ERK inhibitors and dominant-negative ERK1/2\",\n      \"pmids\": [\"22564524\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether channel conductance versus scaffolding drives ERK activation unresolved\", \"Single-lab observation\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Showed DOG1/ANO1 oncogenic effect in GIST operates through the tumor microenvironment (IGFBP5/IGF axis) rather than direct cell-autonomous growth or KIT signaling.\",\n      \"evidence\": \"RNAi and inhibitor treatment in GIST xenografts with expression profiling\",\n      \"pmids\": [\"23576565\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism linking ANO1 to IGFBP5 regulation unknown\", \"In vitro growth effect explicitly negative, leaving channel role unclear\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Connected ANO1 to G1/S cell-cycle progression and Rb phosphorylation, providing a proliferation mechanism in ICC and cancer cells.\",\n      \"evidence\": \"Ano1 KO mice, EdU/Ki67, low-Cl- media and Cl- channel blockers with KO controls\",\n      \"pmids\": [\"21940901\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Signal linking Cl- conductance to Rb phosphorylation unresolved\", \"Cl- channel blocker specificity a caveat\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Identified ANO1 as a primary ciliogenesis factor localized to a pre-ciliary 'nimbus' with Cdc42, Arl13b and exocyst Sec6.\",\n      \"evidence\": \"Immunofluorescence, shRNA knockdown, pharmacological inhibition, confocal microscopy\",\n      \"pmids\": [\"24694595\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether ANO1 channel activity is required for ciliogenesis unclear\", \"Functional interaction with exocyst not biochemically defined\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Established ANO1 as a phenotypic switch in HNSCC ('grow or go'), with S970 required for EMT and Radixin association but dispensable for proliferation.\",\n      \"evidence\": \"Proteomic screen, S970A mutant, Radixin co-IP, orthotopic metastasis model, bisulfite sequencing\",\n      \"pmids\": [\"24919570\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"How S970 phosphorylation state is controlled unknown\", \"Structural basis of Radixin binding not defined\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Extended the ERK/cyclin D1 oncogenic mechanism to colorectal cancer, linking ANO1 loss to MEK/ERK suppression and G1/S arrest.\",\n      \"evidence\": \"shRNA knockdown with migration/invasion assays and MAPK Western blots\",\n      \"pmids\": [\"25541940\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Single knockdown approach\", \"Upstream link from ANO1 to MEK not established\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Reframed ANO1 gating around localized ER store Ca2+ rather than bulk cytosolic Ca2+, establishing microdomain signaling logic.\",\n      \"evidence\": \"Co-localization imaging and electrophysiology synthesized across cell types\",\n      \"pmids\": [\"25398532\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Synthesis review rather than single reconstitution\", \"Molecular tethering to IP3R sites not yet defined\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Showed PKC\\u03b1 mediates purinergic activation of ANO1 Cl- secretion in biliary epithelium, adding a kinase regulatory input.\",\n      \"evidence\": \"Patch clamp with recombinant PKC\\u03b1 dialysis, PKC\\u03b1 and TMEM16A siRNA\",\n      \"pmids\": [\"26542395\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"PKC\\u03b1 phosphorylation site on ANO1 not identified\", \"Direct versus indirect phosphorylation not distinguished\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Linked angiotensin-II-induced ANO1 upregulation to VSMC proliferation and hypertension development in vivo.\",\n      \"evidence\": \"SHR model, siRNA, T16Ainh-A01, primary VSMC culture, blood pressure measurement\",\n      \"pmids\": [\"25739000\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Transcriptional pathway from AngII to ANO1 not defined\", \"Single lab\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Demonstrated ANO1 transports HCO3- into the pancreatic acinar lumen, buffering luminal pH after zymogen exocytosis.\",\n      \"evidence\": \"Intraluminal pH measurement in isolated acini with T16inh-A01\",\n      \"pmids\": [\"27510033\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Contribution relative to other transporters not quantified\", \"Pharmacological inhibitor only\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Established a surprising codependence of CFTR on ANO1, showing ANO1 is required for CFTR membrane expression, cAMP-activated currents, and ER Ca2+ store release.\",\n      \"evidence\": \"Two tissue-specific Cre-lox KO lines, Ussing chamber, patch clamp, CFTR surface biotinylation\",\n      \"pmids\": [\"28963502\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Molecular mechanism of CFTR trafficking dependence unresolved\", \"Mechanism of SOcAMPS engagement not detailed\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Defined the compartmentalized signalosome (GPCR-ADCY1-EPAC1) coordinating ANO1 and CFTR, and showed Golgi-independent ANO1 maturation.\",\n      \"evidence\": \"GPCR knockdown, ADCY1/EPAC1 localization, patch clamp, Ussing chamber\",\n      \"pmids\": [\"29331508\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Physical scaffold organizing the signalosome not identified\", \"Golgi-independent trafficking route undefined\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Showed ANO1 promotes cancer survival by suppressing Bim downstream of ERK1/2, an anti-apoptotic mechanism complementing its proliferative role.\",\n      \"evidence\": \"siRNA, viability/apoptosis assays, xenograft, human HNSCC tissue analysis\",\n      \"pmids\": [\"28899969\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct link between ANO1 conductance and ERK/Bim not mechanistically resolved\", \"Single lab\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Defined PI(4,5)P2 as a required cofactor preventing channel rundown and lipid/cholesterol/fatty-acid modulation of ANO1 gating.\",\n      \"evidence\": \"Inside-out and whole-cell patch clamp with PI(4,5)P2 depletion/supplementation, cholesterol and fatty acid manipulation\",\n      \"pmids\": [\"29277655\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"PI(4,5)P2 binding site not structurally mapped\", \"Physiological lipid concentrations governing gating not defined\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Linked ANO1 to VRAC component LRRC8A and to Ca2+-triggered exocytosis, hinting at roles beyond Cl- conductance.\",\n      \"evidence\": \"Co-IP, LRRC8A siRNA, patch clamp, membrane capacitance and FM4-64 imaging\",\n      \"pmids\": [\"27514381\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Functional significance of ANO1-LRRC8A interaction unclear\", \"Whether ANO1 directly mediates exocytosis not established\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Established ANO1 as essential for basal ATP-driven mucus secretion in airway and intestine, while showing cholinergic compound exocytosis is ANO1-independent.\",\n      \"evidence\": \"Two tissue-specific KO lines, inhibitors, siRNA, mucus secretion assays\",\n      \"pmids\": [\"30586313\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism coupling ANO1 to mucus granule release not defined\", \"Relationship to the CFTR codependence not integrated\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Showed TRPV4 functionally feeds ANO1 in gland acinar cells via IP3-dependent Ca2+, contributing to muscarinic and temperature-dependent secretion.\",\n      \"evidence\": \"TRPV4 KO mice, TRPV4 agonist/antagonist, patch clamp in acinar cells\",\n      \"pmids\": [\"29187363\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Physical TRPV4-ANO1 proximity not established\", \"Single lab\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Identified ANO1 as required for cholinergic neuron firing in the medial habenula, linking channel function to anxiety and social behavior.\",\n      \"evidence\": \"Conditional KO, RNAscope, patch clamp, DREADD inhibition, behavioral assays\",\n      \"pmids\": [\"31782602\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism by which ANO1 shapes afterhyperpolarization not detailed\", \"Upstream Ca2+ source in mHb neurons not defined\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Showed ANO1 mediates BDNF-driven radial glial process extension required for proper cortical lamination, defining a developmental role.\",\n      \"evidence\": \"Ano1 KO mice, cortical layer analysis, knockdown/overexpression, patch clamp, BDNF stimulation\",\n      \"pmids\": [\"31147466\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Link from BDNF receptor signaling to ANO1 activation not resolved\", \"How Cl- flux drives process extension unclear\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Identified CaMKII phosphorylation at S528 as a driver of channel rundown counteracted by PP1/PP2A, defining phospho-regulation of gating.\",\n      \"evidence\": \"Patch clamp in HEK293, CaMKII and phosphatase inhibitors, S528A mutation, ATP-free pipette\",\n      \"pmids\": [\"31461344\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Physiological triggers of CaMKII-mediated rundown not defined\", \"Whether S528 phosphorylation alters Ca2+ sensitivity directly unclear\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Identified the transcriptional/epigenetic basis of ANO1 upregulation in gastric cancer via SP1-recruited MLL1 and H3K4me3 at the promoter.\",\n      \"evidence\": \"ChIP for SP1 and MLL1, H3K4me3 analysis, promoter luciferase, SP1 perturbation\",\n      \"pmids\": [\"30871776\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether this axis operates in other cancers untested\", \"Single lab\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Revealed a non-channel scaffolding function: hepatocyte ANO1 binds and degrades VAMP3, disrupting SNARE complexes and GLUT2 trafficking to drive NAFLD.\",\n      \"evidence\": \"Hepatocyte-specific KO and transgenic mice, co-IP, SNARE analysis, GLUT2 biotinylation, VAMP3 rescue\",\n      \"pmids\": [\"32440483\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism by which ANO1 induces VAMP3 degradation not detailed\", \"Whether channel activity contributes unresolved\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Defined an EGFR/STAT3/ROCK1 positive-feedback loop in which ANO1 drives metastasis and ROCK1 reciprocally enhances ANO1 via moesin T558 phosphorylation.\",\n      \"evidence\": \"Migration/invasion assays, patch clamp, ROCK1/RhoA overexpression, moesin phospho-Western, lung metastasis model\",\n      \"pmids\": [\"34603794\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct phosphorylation site on ANO1 by ROCK1 not mapped\", \"Single lab\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Showed ANO1 is the CaCC in type I taste cells, activated by ATP via P2Y receptors, integrating it into taste signaling.\",\n      \"evidence\": \"Immunohistochemistry, patch clamp in isolated taste cells, ion substitution, Ani-9 blockade\",\n      \"pmids\": [\"34089532\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Functional role of type I cell Cl- currents in taste perception unclear\", \"Single lab\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Defined a pericyte Cl- efflux\\u2013depolarization\\u2013VGCC amplification loop by which ANO1 worsens ischemic capillary constriction and pericyte death.\",\n      \"evidence\": \"Inhibitors, rodent stroke model, two-photon Ca2+/diameter imaging, patient genetics\",\n      \"pmids\": [\"35316222\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Initial Ca2+ trigger in ischemic pericytes not defined\", \"Translational relevance of patient genetic association limited\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Revealed a second scaffolding function: ANO1 binds GPX4 to induce its ubiquitination, promoting ferroptosis in hepatic ischemia/reperfusion injury.\",\n      \"evidence\": \"Hepatocyte-specific KO/overexpression mice, co-IP, ubiquitination assays, ferroptosis modulators, interaction-disruption rescue\",\n      \"pmids\": [\"36572666\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"E3 ligase mediating GPX4 ubiquitination not identified\", \"Apparent opposite ferroptosis role in cancer not reconciled\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Linked ANO1 to chemoresistance via ROS/TRPML1/\\u03b2-catenin-MITF-driven lysosomal exocytosis that expels cisplatin from SCCHN cells.\",\n      \"evidence\": \"Genetic/pharmacological lysosome inhibition, ROS and pathway analysis, cisplatin quantification, PDX model\",\n      \"pmids\": [\"35286200\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"How ANO1 initiates lysosomal biogenesis signaling unclear\", \"Single lab\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Resolved a stable ANO1-CaV1.2-IP3R signaling complex as the molecular EC-coupling unit driving Ca2+ waves and tone in pulmonary arterial smooth muscle.\",\n      \"evidence\": \"Smooth-muscle-specific KO, co-IP, super-resolution nanomicroscopy, GCaMP imaging, pressure myography\",\n      \"pmids\": [\"37702787\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Stoichiometry and structural arrangement of the complex unknown\", \"Whether complex composition varies across vascular beds unclear\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Showed ANO1 promotes immunotherapy resistance by inhibiting ferroptosis via PI3K-Akt and recruiting CAFs through TGF-\\u03b2, remodeling the tumor microenvironment.\",\n      \"evidence\": \"Knockdown/inhibition in GI cancer lines, CDX/PDX models, multi-omics, CD8+ T-cell assays\",\n      \"pmids\": [\"37341301\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct molecular link from ANO1 to PI3K-Akt not defined\", \"Channel versus scaffolding contribution unresolved\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Connected ANO1 to human disease by identifying rare gain-of-function variants with increased Ca2+ sensitivity that predispose to moyamoya disease.\",\n      \"evidence\": \"Exome sequencing, family segregation (LOD 3.3), patch clamp of variants in heterologous cells\",\n      \"pmids\": [\"37253099\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Functional validation across the full variant set limited\", \"Tissue mechanism linking gain-of-function to cerebrovascular pathology undefined\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ANO1's channel-conducting role is mechanistically distinguished from its non-conducting scaffolding functions (VAMP3/GPX4 degradation, EGFR/Radixin/LRRC8A complexes) within the same protein remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No structure-function separation of channel versus scaffold domains across contexts\", \"Opposing ferroptosis roles in liver versus cancer not reconciled\", \"Tissue-specific partner selection not explained\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0005215\", \"supporting_discovery_ids\": [0, 2, 16, 20]},\n      {\"term_id\": \"GO:0005254\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"GO:0140299\", \"supporting_discovery_ids\": [2, 3, 23]},\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [26, 28, 30]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [5, 14]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005886\", \"supporting_discovery_ids\": [1, 16, 30]},\n      {\"term_id\": \"GO:0005929\", \"supporting_discovery_ids\": [6]},\n      {\"term_id\": \"GO:0005764\", \"supporting_discovery_ids\": [27]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-382551\", \"supporting_discovery_ids\": [0, 20]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [3, 25, 30]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [17, 26]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [4, 24, 32]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [7, 9]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [22]}\n    ],\n    \"complexes\": [\"ANO1-CaV1.2-IP3R EC-coupling complex\", \"ANO1-EGFR complex\", \"ANO1-CFTR/ADCY1/EPAC1 signalosome\"],\n    \"partners\": [\"EGFR\", \"CFTR\", \"CAV1.2 (CACNA1C)\", \"ITPR/IP3R\", \"LRRC8A\", \"VAMP3\", \"GPX4\", \"CALM1 (calmodulin)\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":8,"faith_total":8,"faith_pct":100.0}}