| 1988 |
The primary amino acid sequence of human p68 (later named ANXA6) was determined from cDNA clones, revealing it is a membrane-associated Ca2+-binding protein with an internally repetitive structure comprising eight repeats, each containing a conserved sequence motif. It was identified as a member of the annexin family, related to p36, lipocortin I, and protein II, and the cDNA data suggested alternatively spliced mRNAs could encode different p68 protein species. |
cDNA cloning, sequencing, and sequence analysis |
The EMBO journal |
High |
3258820
|
| 1990 |
ANXA6 (referred to as p68) was shown to inhibit phospholipid vesicle membrane fusion at threshold Ca2+ concentrations, distinguishing it functionally from other annexins. It binds Ca2+-dependently to phosphatidic acid, phosphatidylserine, phosphatidylinositol, and phosphatidylethanolamine vesicles, but not phosphatidylcholine vesicles. These quantitative and qualitative differences among annexins suggest distinct intracellular functions. |
In vitro phospholipid vesicle binding assay, vesicle aggregation and fusion assays with defined lipid compositions and Ca2+ concentrations |
The Biochemical journal |
High |
2138016
|
| 2013 |
In Niemann-Pick type C (NPC) disease cells, AnxA6 translocates to lipid microdomains (detergent-resistant membranes, DRMs) enriched in cholesterol and sphingomyelin upon a rise in Ca2+ concentration. In vitro Langmuir monolayer experiments showed that Ca2+ is the primary factor regulating AnxA6 interaction with neutral lipid monolayers (DPPC and sphingomyelin), indicating Ca2+-driven partitioning of AnxA6 into cholesterol/sphingomyelin-enriched microdomains contributes to NPC pathology. |
Lipid microdomain (DRM) isolation and fractionation, Langmuir monolayer in vitro lipid-protein interaction assays, calcium titration |
Molecular bioSystems |
Medium |
23360953
|
| 2016 |
Cancer-associated fibroblasts (CAFs) secrete ANXA6-containing extracellular vesicles (EVs) that carry an ANXA6/LRP1/TSP1 complex. Formation of this complex is restricted to CAFs under physiopathologic conditions. Tumor cell uptake of CAF-derived ANXA6+ EVs promotes pancreatic ductal adenocarcinoma (PDA) cell survival and migration. Depletion of ANXA6 in CAFs impaired complex formation and reduced PDA aggressiveness and metastasis in vivo, while injection of ANXA6+ EVs enhanced tumorigenesis. |
Proteomic stromal signature analysis, co-immunoprecipitation to identify the ANXA6/LRP1/TSP1 complex, ANXA6 depletion in CAFs, in vivo xenograft and metastasis assays, EV uptake experiments |
The Journal of clinical investigation |
High |
27701147
|
| 2017 |
AnxA6 was identified as the target antigen of the inhibitory monoclonal antibody MAb 9E1 using immunoprecipitation/LC-MS/MS. Silencing of AnxA6 markedly reduced the invasive capacity of pancreatic and lung squamous cancer cells in vitro, identifying AnxA6 as a functionally relevant pro-invasive target at the cancer cell surface. |
Immunoprecipitation/LC-MS/MS target identification, AnxA6 siRNA knockdown, invasion assays in vitro |
British journal of cancer |
Medium |
28881357
|
| 2018 |
AnxA6-knockout (KO) mice fed a high-fat diet gained less weight and showed reduced adiposity compared to wild-type controls. AnxA6-KO mice displayed increased insulin-inducible phosphorylation of Akt and S6K in liver, but failed to downregulate hepatic gluconeogenesis despite normal insulin signaling. AnxA6-depleted HuH7 hepatocytes were unable to reduce glucose production upon insulin exposure, and KO animals showed increased hepatic glycogen storage, demonstrating that AnxA6 contributes to fine-tuning of hepatic glucose metabolism. |
AnxA6-KO mouse model, high-fat diet feeding, oral glucose tolerance tests (OGTT), insulin tolerance tests (ITT), Western blot for Akt/S6K phosphorylation, glucose production assay in AnxA6-depleted hepatocytes |
PloS one |
High |
30110341
|
| 2020 |
ANXA6 promotes autophagy by inhibiting the PI3K/AKT/mTOR signaling pathway in nasopharyngeal carcinoma cells, thereby contributing to radioresistance. ANXA6 siRNA suppressed autophagy through activation (de-repression) of PI3K/AKT/mTOR, and the PI3K inhibitor CAL101 reversed siANXA6-reduced autophagy. A negative feedback loop was identified in which suppression of PI3K/AKT/mTOR by CAL101 increased ANXA6 expression. |
ANXA6 siRNA knockdown, LC3 siRNA knockdown, PI3K/AKT/mTOR inhibitor (CAL101) treatment, autophagy assays, Western blot for pathway components |
Frontiers in cell and developmental biology |
Medium |
32373608
|
| 2020 |
EHEC effector protein EspF physically interacts with host protein ANXA6 through its C-terminal domain, as verified by FRET and co-immunoprecipitation. Co-expression of EspF-ANXA6 activated myosin light chain kinase (MLCK), induced phosphorylation of myosin light chain (MLC) and PKCα, downregulated Calmodulin, and decreased levels and disrupted distribution of tight junction proteins ZO-1 and occludin, revealing a mechanism by which bacterial infection perturbs epithelial barrier function through ANXA6. |
FRET, co-immunoprecipitation, domain mapping, Western blot for MLCK/MLC/PKCα phosphorylation and tight junction proteins, confocal microscopy for ZO-1 distribution |
Frontiers in cell and developmental biology |
Medium |
33425920
|
| 2020 |
ANXA6 enables appropriate ATG9A+ vesicle trafficking from endosomes to autophagosomes through RAB GTPases and/or F-actin, thereby facilitating autophagosome formation. ANXA6 knockdown attenuated starvation-induced autophagy, while restoration of expression enhanced it. ANXA6 also suppresses mTOR activity through inhibition of PI3K-AKT and ERK signaling pathways, providing dual control of autophagy. |
ANXA6 siRNA knockdown, ANXA6 rescue overexpression, GO analysis of ANXA6 interaction targets, ATG9A vesicle trafficking assays, mTOR/PI3K-AKT/ERK signaling Western blot, LC3 reporter assays |
Clinical and translational medicine |
Medium |
33135350
|
| 2021 |
ANXA6-containing exosomes (ANXA6-exo) derived from breast cancer stem cells promote paclitaxel resistance and cancer progression in recipient cells via autophagy induction in a YAP1-dependent manner. ANXA6-exo upregulated YAP1 to dysregulate the Hippo pathway, and silencing YAP1 abrogated the resistance effects. Autophagy inhibition with 3-methyladenine blocked ANXA6-exo-mediated PTX resistance. |
Exosome isolation and transfer experiments, ANXA6 and YAP1 siRNA knockdown, autophagy inhibitor (3-methyladenine), paclitaxel resistance assays, stem cell enrichment assays |
Frontiers in cell and developmental biology |
Medium |
34676207
|
| 2021 |
CRISPR-Cas9 knockout of the ANXA6 gene in HEK293FT cells significantly increased influenza A virus replication and accumulation, demonstrating that endogenous ANXA6 functions as a host restriction factor that counteracts influenza virion packaging. |
CRISPR-Cas9 gene knockout, TCID50 viral titer assay, flow cytometry, viral growth curve experiments in ANXA6-/- versus parental cells |
Gene |
Medium |
34673207
|
| 2022 |
In osteoblasts, AnxA6 plays a role in matrix vesicle-mediated mineralization. Apigenin treatment disrupted intracellular distribution of AnxA6 by blocking AnxA6 aggregation and TNAP attachment to membranes, and modulated TNAP enzymatic activity, affecting mineral composition and structure. AnxA6 distribution was examined by fluorescence microscopy and TEM-gold in cells and vesicles. |
Fluorescence microscopy (FM), TEM-gold labeling of vesicles, ELISA for TNAP activity, AR-S/CPC mineralization assay, apigenin pharmacological treatment in hFOB1.19, Saos-2, and HCASMC cell lines |
International journal of molecular sciences |
Medium |
36361965
|
| 2022 |
miR-24-3p directly binds the 3'UTR of ANXA6 mRNA and suppresses ANXA6 expression, thereby promoting proliferation and inhibiting adipogenic differentiation of chicken intramuscular preadipocytes. Overexpression of ANXA6 inhibited proliferation and promoted differentiation, while ANXA6 knockdown had opposite effects. Rescue with an ANXA6 overexpression vector eliminated the impact of miR-24-3p mimics, confirming ANXA6 as the functional mediator. |
Dual-luciferase reporter assay for miR-24-3p binding to ANXA6 3'UTR, ANXA6 overexpression and knockdown, miR-24-3p mimics/inhibitors, cell proliferation and adipogenic differentiation assays |
Genes |
Medium |
35456441
|
| 2023 |
AnxA6 is SUMOylated by SUMO1, with K299 identified as a key SUMOylation site. SUMOylated AnxA6 preferentially binds EGFR upon EGF stimulation and facilitates EGFR-PKCα complex formation, which decreases EGF-induced phosphorylation of EGFR and ERK1/2 and reduces cyclin D1 expression. The SUMO-site mutant AnxA6K299R showed reduced suppression of EGFR-ERK1/2 phosphorylation, reduced tumor suppression, and conferred gefitinib resistance. This mechanism also operates on mutant EGFR (T790M/L858R). |
Co-transfection with SUMO1/UBC9 plasmids, immunoprecipitation for SUMOylated AnxA6, LC-MS/MS for SUMOylation site mapping, site-directed mutagenesis (K299R), shRNA knockdown, lentiviral overexpression, Western blot, CCK8/colony/wound healing assays, xenograft nude mouse model |
Cell communication and signaling |
High |
37528485
|
| 2023 |
The ANXA6/TRPV2 axis promotes lymphatic metastasis in head and neck squamous cell carcinoma by inducing autophagy through inhibition of the AKT/mTOR signaling pathway. ANXA6 expression positively correlated with TRPV2 expression, and TRPV2 inhibition reversed ANXA6-induced autophagy and lymphatic metastasis, placing TRPV2 downstream of ANXA6 in this pathway. |
RNA sequencing of clinical specimens, ANXA6 overexpression/knockdown, in vitro proliferation and migration assays, in vivo lymphatic metastasis assays, TRPV2 inhibitor treatment, AKT/mTOR pathway Western blot |
Experimental hematology & oncology |
Medium |
37138336
|
| 2024 |
PRRX1 was identified as a transcription factor that directly promotes ANXA6 expression in bladder cancer via ChIP-PCR and dual-luciferase assays. ANXA6 in turn promotes PKCα/EGFR complex formation (confirmed by mass spectrometry, immunofluorescence, and co-immunoprecipitation), inhibiting EGFR phosphorylation and downstream AKT and ERK1/2 signaling, thereby enhancing cisplatin sensitivity and re-sensitizing resistant cells. |
ChIP-PCR, dual-luciferase reporter assay for PRRX1 binding to ANXA6 promoter, mass spectrometry, immunofluorescence, co-immunoprecipitation, CCK-8, colony formation, flow cytometry (ROS, apoptosis), comet assay, xenograft model |
Life sciences |
Medium |
39528080
|
| 2025 |
Anxa6-/- mice display rapid fasting-induced hypoglycemia due to a specific impairment in the glucose-alanine cycle: these mice cannot utilize alanine for hepatic gluconeogenesis (GNG). Fasted Anxa6-/- mice showed elevated glucagon, increased lipid oxidation, and slightly reduced expression of alanine aminotransferase 2 (Gpt2), lactate dehydrogenase (Ldha2), and the hepatic alanine transporter SNAT4, demonstrating a critical role for ANXA6 in alanine-dependent hepatic GNG. |
Anxa6-/- knockout mouse model, indirect calorimetry, glucose/insulin/glucagon tolerance tests, alanine challenge tests, respiratory exchange ratio measurement, biochemical enzyme expression analysis |
Journal of cellular physiology |
Medium |
40802799
|
| 2025 |
ANXA6 overexpression in decidual macrophages promotes macrophage M1 polarization and pyroptosis through the NF-κB signaling pathway, leading to mitochondrial ROS accumulation and decreased mitochondrial membrane potential. Inhibition of NLRP3 rescued ANXA6-overexpression-induced M1 polarization and pyroptosis. ANXA6-overexpressing macrophages inhibited trophoblast function in vitro via TNF-α-mediated inhibition of the PI3K/AKT axis. |
ANXA6 overexpression in macrophages, ROS/mitochondrial membrane potential assays, NLRP3 inhibitor treatment, ROS inhibitor treatment, NF-κB pathway analysis, M1/M2 polarization markers, trophoblast co-culture, PI3K/AKT pathway Western blot |
International journal of biological sciences |
Medium |
40959268
|
| 2025 |
MG53 binds AnxA6 at membrane injury sites, and AnxA6 overexpression abolishes MG53's cytoprotective effects in iPSCs under hypoxia/reoxygenation stress, placing AnxA6 as a negative regulator of MG53-mediated membrane repair. MG53 treatment enhanced iPSC survival and functional integration in myocardial tissue post-ischemia-reperfusion injury in vivo. |
Co-binding assay/interaction studies (MG53-AnxA6), AnxA6 overexpression rescue experiment, H/R injury model in iPSCs, in vivo MIRI model with MG53 treatment and iPSC transplantation |
Cellular signalling |
Low |
41106752
|
| 2025 |
ANXA6 co-localizes with cGAS and acts as an inhibitor of the cGAS-STING signaling pathway by promoting K63-linked ubiquitination of cGAS, thereby reducing cGAS protein levels. ANXA6 knockdown impeded cGAS K63-ubiquitination, increased cGAS expression, activated downstream TBK1, IRF3, and type I IFN-stimulated genes (MX1, ISG15, ISG56), elevated ROS and lipid peroxides, and induced ferroptosis in cervical cancer cells. |
Co-localization by immunofluorescence, co-immunoprecipitation for ANXA6-cGAS interaction, ubiquitination assays (K63-linkage specificity), ANXA6 siRNA knockdown, Western blot for cGAS-STING pathway components, ROS/lipid peroxide assays, ferroptosis detection |
Cancer cell international |
Medium |
41219880
|
| 2025 |
In DMD skeletal muscle cells, ANXA5 and ANXA6 fail to upregulate in response to mechanical membrane stress, while control cells upregulate both proteins as part of an adaptive membrane repair mechanism. This was established by live-cell imaging of GFP-tagged annexins, Western blotting, and a shear stress-based injury assay, placing ANXA6 as part of the adaptive membrane repair response in skeletal muscle. |
Live-cell imaging of GFP-tagged ANXA6, shear stress-based membrane injury assay, Western blot for annexin expression, immunohistochemistry of DMD patient biopsies |
bioRxivpreprint |
Low |
|
| 2024 |
AnxA6 interacts with SNAP23 (a SNARE protein) and this interaction is required for the translocation of AnxA6 to cellular membranes and subsequent secretion of pro-inflammatory cytokines (MCP-1/CCL2, IL-8, DKK1, TSP-1, osteopontin) and small extracellular vesicles (EVs) in triple-negative breast cancer cells. AnxA6 downregulation strongly reduced EV secretion and cytokine levels; upregulation promoted EV-associated Rab7, cholesterol, and MCP-1. AnxA6 neutralizing antibodies reduced survival of AnxA6-low TNBC cells. |
Co-immunoprecipitation (AnxA6-SNAP23), cytokine arrays on conditioned media, EV isolation and characterization, AnxA6 siRNA knockdown and overexpression, cholesterol measurement in EVs, membrane translocation assays |
bioRxivpreprint |
Medium |
|