{"gene":"ACHE","run_date":"2026-06-09T22:02:38","timeline":{"discoveries":[{"year":1993,"finding":"A single nucleotide mutation at codon 322 in the human ACHE gene (His322→Asn322, CAC→AAC) accounts for the YT blood group polymorphism: the wild-type His322 form is the YT1 (Yta) antigen and the variant Asn322 form is the YT2 (Ytb) antigen, establishing acetylcholinesterase as the YT blood group antigen on red blood cells.","method":"DNA sequencing of human ACHE gene from donors of known YT phenotype","journal":"American journal of human genetics","confidence":"High","confidence_rationale":"Tier 1 / Strong — direct DNA sequencing with genotype-phenotype correlation; foundational finding independently referenced across the corpus","pmids":["8488842"],"is_preprint":false},{"year":2006,"finding":"AChE pre-mRNA undergoes 3′ alternative splicing to produce variant proteins (AChE-T, AChE-R, AChE-H) with identical enzymatic activity but distinct C-termini, leading to different multimeric assemblies, membrane-association patterns, protein partners, and non-hydrolytic functions; the variants are differentially induced under stress.","method":"Molecular biology (splice variant characterization), biochemical analysis of multimeric forms, review of experimental literature","journal":"Trends in neurosciences","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods across many studies; well-replicated finding reviewed here","pmids":["16516310"],"is_preprint":false},{"year":2004,"finding":"The stress-induced AChE-R variant forms a triple complex with PKCε and the scaffold protein RACK1 in human U87MG glioblastoma cells, enhances PKCε phosphorylation, and promotes cell proliferation (BrdU incorporation); CREB suppresses this proliferative effect via a PKC-mediated pathway.","method":"Co-immunoprecipitation, PKC phosphorylation assay, BrdU incorporation, antisense knockdown, kinase inhibitor experiments","journal":"Neoplasia (New York, N.Y.)","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal Co-IP and functional readouts in a single lab with multiple orthogonal methods","pmids":["15153340"],"is_preprint":false},{"year":2008,"finding":"The C-terminus of AChE-R (and N-AChE-R) interacts with the glycolytic enzyme enolase and with scaffold protein RACK1 (via yeast two-hybrid and co-immunoprecipitation); the AChE-R C-terminal peptide (ARP) elevates enolase activity by ~12% in vitro, and CHO cells expressing AChE-R (but not AChE-S) show 25% higher ATP levels. AChE-R also competes with RACK1 for interaction with pro-apoptotic p73, modulating the p73 pathway and conferring cis-platinum resistance.","method":"Yeast two-hybrid screen, Co-immunoprecipitation, in vitro enolase activity assay, ATP measurement, siRNA knockdown, Western blot","journal":"Chemico-biological interactions","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple orthogonal methods (yeast two-hybrid, Co-IP, in vitro enzyme assay, cellular ATP measurement) in single lab","pmids":["18572152"],"is_preprint":false},{"year":2009,"finding":"The N-terminally extended AChE-S variant (N-AChE-S) promotes apoptosis and interacts with kinases GSK3, Aurora, and GAK, membrane integrin receptors, and the death receptor FAS, as identified by peptide array and validated by co-immunoprecipitation; microinjection of N-AChE-S into mouse oocytes caused embryonic death at the zygotic stage.","method":"Microinjection into mouse oocytes, peptide array, co-immunoprecipitation","journal":"Journal of neural transmission","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-immunoprecipitation validation of peptide array hits plus in vivo functional assay, single lab","pmids":["19533292"],"is_preprint":false},{"year":2002,"finding":"AChE expression increases in apoptotic neuroblastoma SK-N-SH cells during long-term culture, with AChE aggregating in the nucleus; suppression of AChE with antisense oligonucleotide rescued cells from apoptosis. Caspase-3 activity was parallel with AChE activation, suggesting AChE plays a pro-apoptotic role in neuronal cells.","method":"Antisense oligonucleotide knockdown, immunofluorescence/subcellular fractionation, caspase-3 activity assay","journal":"Neuroscience research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — antisense loss-of-function with specific apoptotic phenotype, localization by imaging, single lab","pmids":["11985878"],"is_preprint":false},{"year":2004,"finding":"AChE increases amyloid fibril assembly forming highly toxic AChE–Aβ complexes; these complexes decrease cytoplasmic β-catenin levels (a key Wnt signaling component) in hippocampal neurons and in vivo, and Wnt-3a activation rescues neuronal survival from Aβ-AChE neurotoxicity.","method":"In vitro fibril assembly assay, hippocampal neuron culture, in vivo rat hippocampal injection, β-catenin quantification, Wnt pathway manipulation","journal":"Current Alzheimer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vitro and in vivo assays with pathway manipulation, single lab","pmids":["15975054"],"is_preprint":false},{"year":2010,"finding":"AChE deficiency (AChE-knockout mice) or pharmacological AChE inhibition reduces renal ischemia/reperfusion-induced apoptosis, with decreased caspase-8, -9, -12, and -3 activation, reduced p53 induction and Ser15 phosphorylation, and decreased Bax/Bcl-2 ratio, establishing AChE as a pro-apoptotic factor in vivo.","method":"AChE-deficient mouse model, pharmacological inhibition (huperzine A, tacrine, donepezil), caspase activity assays, Western blot (p53, Bax, Bcl-2), histology","journal":"Apoptosis","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic knockout plus pharmacological inhibition with multiple orthogonal apoptotic readouts; consistent findings across methods","pmids":["20054652"],"is_preprint":false},{"year":2015,"finding":"Enzymatically active AChE is produced by human ovarian granulosa cells and is present in follicular fluid where it hydrolyzes ACh; the readthrough isoform AChE-R is identified in granulosa, theca, and luteal cells. A synthetic AChE-R C-terminal peptide (ARP) induces caspase-independent, RIPK1/MLKL-dependent necroptosis (balloon-like morphology, LDH release) in primary granulosa cells, blocked by necrostatin-1 and necrosulfonamide.","method":"Enzymatic activity assay of follicular fluid, immunohistochemistry, ARP peptide treatment of primary cells, RIPK1/MLKL inhibitor experiments, LDH assay, morphological analysis","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — enzymatic assay, pharmacological pathway dissection, and morphological readout; single lab with multiple methods","pmids":["25766324"],"is_preprint":false},{"year":2016,"finding":"APP overexpression in neuronal cells substantially decreases AChE mRNA, protein, and catalytic activity as well as PRiMA mRNA; siRNA knockdown of APP upregulates AChE mRNA. This regulation does not involve APP processing/AICD but requires the E1 region of APP, specifically its copper-binding domain. AChE shedding from the cell membrane involves a metalloproteinase-mediated mechanism stimulated by cholinergic agonists.","method":"APP overexpression and siRNA knockdown, RT-PCR, Western blot, AChE activity assay, domain deletion constructs, metalloproteinase inhibitor experiments","journal":"Chemico-biological interactions","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — domain-mapping with deletion constructs and siRNA, multiple readouts, single lab","pmids":["27062894"],"is_preprint":false},{"year":2013,"finding":"AChE-S interacts with the NFκB-activating scaffold protein RACK1 intracellularly, potentially preventing NFκB activation; fluoxetine intercepts LPS-induced decreases in AChE-S, and this is associated with reduced pro-inflammatory cytokine production. The interaction between AChE-S and RACK1/PKCβII was demonstrated by structural modeling and co-immunoprecipitation.","method":"Co-immunoprecipitation, ELISA (cytokine measurement), structural modelling, human PBMC experiments","journal":"Journal of molecular neuroscience","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single lab, Co-IP supported by modelling, limited mechanistic follow-up","pmids":["24258317"],"is_preprint":false},{"year":2017,"finding":"Using surface plasmon resonance, miR-132 preferentially targets the soluble AChE-R isoform over the synaptic AChE-S isoform; peripheral miR-132 blockade by antisense oligonucleotide (AM132) elevated muscle AChE-R 10-fold over AChE-S, re-balancing neurotransmission, and inversely modulated brain immune-related miRNAs.","method":"Surface plasmon resonance (SPR), antisense oligonucleotide treatment in mice, cortical miRNA-sequencing, Western blot","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 1 / Moderate — SPR binding assay (direct physical measurement) plus in vivo functional consequence, single lab","pmids":["28209997"],"is_preprint":false},{"year":2016,"finding":"miR-124 directly targets the 3′-UTR of AChE mRNA (and STAT3 mRNA) in intestinal macrophages, suppressing AChE protein expression; overexpression of miR-124 inhibits macrophage activation and reduces IL-6 and TNF-α production, while AChE inhibitors suppress LPS-induced cytokine production, positioning AChE as a negative regulator of the cholinergic anti-inflammatory pathway in intestinal macrophages.","method":"miRNA overexpression, 3′-UTR luciferase reporter assay (implied by 'directly target'), Western blot, ELISA (cytokines), AChE inhibitor treatment","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct 3′-UTR targeting validated with gain-of-function and inhibitor experiments; single lab","pmids":["27977009"],"is_preprint":false},{"year":2000,"finding":"CGRP-induced AChE expression in chick muscle is mediated by a cAMP-dependent protein kinase (PKA) pathway: CGRP or PKA activators increase intracellular PKA activity ~2-fold, and in vivo transfection of constitutively active Gαs increases AChE mRNA and protein ~2-fold, while constitutively active Gαi has the opposite effect; PKA inhibitors block the induction.","method":"PKA activity assay in cultured chick myotubes, in vivo transfection of constitutively active G-protein constructs, Western blot, PKA inhibitor treatment","journal":"Neuroreport","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vitro and in vivo gain-of-function and inhibitor experiments with multiple readouts; single lab","pmids":["10757523"],"is_preprint":false},{"year":2008,"finding":"Motor nerve-derived CGRP and nerve-evoked electrical activity differentially regulate expression of AChE(T), PRiMA, and ColQ in muscle via distinct downstream signaling cascades, controlling the formation of asymmetric AChE species (A4, A8, A12 with ColQ) and globular G4 AChE (with PRiMA) at the neuromuscular junction.","method":"Muscle innervation/denervation experiments, signaling cascade inhibition, gene expression analysis (AChE subunit mRNA and protein), transgenic/transfection approaches","journal":"Chemico-biological interactions","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple orthogonal experiments in muscle biology context; single lab review of own data","pmids":["18514177"],"is_preprint":false},{"year":2005,"finding":"Genetic deletion of exon 5 and/or exon 6 of the mouse ACHE gene by homologous recombination demonstrated that exon 5 splice produces the GPI-anchored hematopoietic form, and exon 6 splice produces the form binding PRiMA/ColQ in brain and muscle; deletion of an intronic enhancer region eliminated AChE expression specifically in muscle (while preserving near-normal brain expression), establishing a tissue-specific regulatory element.","method":"Homologous recombination in ES cells, Cre/loxP conditional deletion, tissue AChE activity assay, Northern/Western blot","journal":"Chemico-biological interactions","confidence":"High","confidence_rationale":"Tier 1 / Strong — multiple independent gene-targeted mouse lines with tissue-specific phenotypic readouts; orthogonal genetic methods","pmids":["16289062"],"is_preprint":false},{"year":2021,"finding":"In a zebrafish TDP-43 loss-of-function ALS model, knockdown of tdp-43 decreased ache expression and caused NMJ disassembly and motor deficits; overexpression of human AChE rescued both pre- and post-synaptic NMJ defects, establishing AChE as a downstream effector of TDP-43 required for NMJ integrity.","method":"Zebrafish tdp-43 morpholino knockdown, human AChE mRNA overexpression rescue, NMJ immunostaining, motor behavior assay","journal":"Cells","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function plus rescue experiment with defined structural and behavioral phenotype; single lab","pmids":["33499374"],"is_preprint":false},{"year":2018,"finding":"Two new allosteric sites in AChE (beyond the known peripheral anionic site) were identified by computational tools; three small-molecule allosteric inhibitors validated by in vitro kinetic assays and molecular dynamics confirmed allosteric inhibition of AChE activity.","method":"Computational allosteric site identification, virtual screening, in vitro AChE inhibition assay, kinetic analysis, molecular dynamics simulation","journal":"Journal of enzyme inhibition and medicinal chemistry","confidence":"Low","confidence_rationale":"Tier 3 / Weak — in vitro kinetic assay plus computational; no mutagenesis or structural validation of the allosteric sites","pmids":["29873262"],"is_preprint":false},{"year":2015,"finding":"A recombinant AChE–Fc fusion protein (AChE-Fc) retains full enzymatic activity and binding affinity for active-site ligands (BW284c5, propidium) and reacts with organophosphate nerve agents (sarin, VX); when administered to mice, AChE-Fc exhibits markedly prolonged circulatory residence (MRT ~6000 min) compared to other recombinant cholinesterase bioscavengers.","method":"Recombinant protein expression, enzymatic activity assay, ligand binding assay, organophosphate reactivity assay, mouse pharmacokinetic study","journal":"Bioconjugate chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vitro biochemical assays plus in vivo pharmacokinetics; single lab with multiple orthogonal methods","pmids":["26121420"],"is_preprint":false},{"year":2005,"finding":"Polymorphisms in the adjacent PON1 and ACHE genes interact: carriers of distinct compound ACHE/PON1 polymorphisms show genotype-specific differences in plasma AChE and paraoxonase activities; PON1 activity displays inverse association with AChE activity, suggesting cross-regulation between the two loci.","method":"Genotyping of 7 polymorphic sites, plasma enzyme activity assays (AChE, BChE, arylesterase, paraoxonase) in 157 individuals, molecular modelling","journal":"Journal of neurochemistry","confidence":"Low","confidence_rationale":"Tier 3 / Weak — population-level biochemical correlation with genotype; no direct experimental manipulation of the interaction","pmids":["15715671"],"is_preprint":false}],"current_model":"ACHE encodes acetylcholinesterase, a fast hydrolase that terminates cholinergic neurotransmission; it is alternatively spliced at the 3′ end to produce distinct isoforms (AChE-T, AChE-R, AChE-H/S) with identical catalytic domains but different C-termini that dictate membrane anchoring (GPI for hematopoietic AChE-H, ColQ/PRiMA for synaptic AChE-T), protein partners (RACK1, PKCε, enolase, GSK3, FAS), and non-enzymatic functions including promotion of apoptosis (nuclear translocation, caspase activation, p53/Bax regulation), regulation of cell proliferation via PKCε/CREB, stimulation of necroptosis (RIPK1/MLKL pathway) in ovarian cells, modulation of Aβ fibril assembly and Wnt/β-catenin signaling, and cholinergic anti-inflammatory regulation; expression of the synaptic form in muscle is controlled by nerve-derived CGRP acting through a PKA-dependent pathway and by an intronic enhancer; a His322Asn substitution defines the YT (Yt) blood group polymorphism on red blood cells."},"narrative":{"mechanistic_narrative":"ACHE encodes acetylcholinesterase, a hydrolase whose pre-mRNA undergoes 3′ alternative splicing to generate isoforms (AChE-T/S, AChE-R, AChE-H) that share an identical catalytic domain but carry distinct C-termini dictating their multimeric assembly, membrane association, and non-hydrolytic protein partnerships [PMID:16516310]. Tissue-specific deletion of exon 5 versus exon 6 in mice established that the exon-5 splice yields the GPI-anchored hematopoietic form while the exon-6 splice produces the form binding PRiMA/ColQ in brain and muscle, and an intronic enhancer drives muscle-specific expression [PMID:16289062]. At the neuromuscular junction, expression of these synaptic species is controlled by nerve-derived CGRP through a PKA-dependent cascade and by nerve-evoked electrical activity, which coordinate assembly of ColQ-anchored asymmetric and PRiMA-anchored globular forms [PMID:10757523, PMID:18514177]; AChE itself acts as a downstream effector required for NMJ integrity in a TDP-43 ALS model [PMID:33499374]. Beyond catalysis, the stress-induced readthrough variant AChE-R forms a complex with the scaffold RACK1 and PKCε to drive proliferation under CREB suppression and partners with enolase to raise cellular ATP [PMID:15153340, PMID:18572152], while its C-terminal peptide triggers RIPK1/MLKL-dependent necroptosis in ovarian granulosa cells [PMID:25766324]. AChE functions broadly as a pro-apoptotic factor: it accumulates in the nucleus of dying cells, and its genetic loss or pharmacological inhibition reduces caspase activation, p53 induction, and the Bax/Bcl-2 ratio in vivo [PMID:11985878, PMID:20054652]. In neurodegeneration, AChE promotes amyloid fibril assembly into toxic AChE–Aβ complexes that deplete β-catenin and impair Wnt signaling [PMID:15975054], and its own expression is suppressed by the copper-binding E1 domain of APP and by miR-124/miR-132 targeting [PMID:27062894, PMID:28209997, PMID:27977009], the latter positioning AChE as a regulator of the cholinergic anti-inflammatory pathway [PMID:27977009]. The His322Asn substitution defines the YT blood group polymorphism on red blood cells [PMID:8488842].","teleology":[{"year":1993,"claim":"Established the molecular basis of a human blood group antigen by mapping it to ACHE, showing the gene product is displayed on red cells.","evidence":"DNA sequencing of ACHE from donors of known YT phenotype, correlating His322Asn with Yta/Ytb","pmids":["8488842"],"confidence":"High","gaps":["Does not address whether the substitution alters catalytic activity or membrane anchoring","No structural explanation for antigenicity"]},{"year":2000,"claim":"Defined the signaling pathway by which motor nerve input drives synaptic AChE expression in muscle, answering how innervation controls enzyme levels.","evidence":"PKA activity assays, constitutively active Gαs/Gαi transfection, and PKA inhibitors in chick myotubes","pmids":["10757523"],"confidence":"Medium","gaps":["Downstream transcription factors not identified","Chick system; human relevance not directly tested"]},{"year":2002,"claim":"First implicated AChE in apoptosis as a non-catalytic role, showing its induction and nuclear aggregation are required for neuronal cell death.","evidence":"Antisense knockdown, subcellular fractionation/imaging, and caspase-3 assay in SK-N-SH cells","pmids":["11985878"],"confidence":"Medium","gaps":["Nuclear targets of AChE not identified","Isoform responsible not resolved"]},{"year":2004,"claim":"Identified a proliferative signaling function for the stress-induced AChE-R variant through a defined scaffold/kinase complex, distinguishing isoform-specific non-hydrolytic activity.","evidence":"Co-IP, PKC phosphorylation and BrdU assays, antisense knockdown in U87MG glioblastoma cells","pmids":["15153340"],"confidence":"Medium","gaps":["Single cell line","Mechanism by which CREB suppresses the effect not fully resolved"]},{"year":2004,"claim":"Linked AChE to Alzheimer pathology mechanistically by showing it accelerates Aβ fibril assembly and impairs neuroprotective Wnt/β-catenin signaling.","evidence":"In vitro fibril assays, hippocampal neuron culture, in vivo rat injection, β-catenin quantification and Wnt-3a rescue","pmids":["15975054"],"confidence":"Medium","gaps":["Whether catalytic activity is required for fibril promotion not established","Direct AChE–β-catenin link not defined"]},{"year":2005,"claim":"Resolved the genetic architecture of isoform-specific anchoring and tissue-specific transcription via targeted deletion of individual exons and a regulatory element.","evidence":"Homologous recombination and Cre/loxP deletion of exons 5/6 and intronic enhancer in mice, with tissue activity assays","pmids":["16289062"],"confidence":"High","gaps":["Trans-acting factors binding the muscle enhancer not identified","Functional consequences of GPI vs PRiMA anchoring in vivo not detailed here"]},{"year":2006,"claim":"Consolidated the model that 3′ splicing generates catalytically identical but functionally distinct AChE isoforms differentially induced by stress.","evidence":"Splice variant and multimeric form characterization reviewing biochemical literature","pmids":["16516310"],"confidence":"High","gaps":["Review consolidation rather than new primary data","Quantitative tissue distribution of variants not the focus"]},{"year":2008,"claim":"Expanded the non-hydrolytic interactome of AChE-R to glycolytic and apoptotic machinery, linking the isoform to cellular energetics and chemoresistance.","evidence":"Yeast two-hybrid, Co-IP, in vitro enolase assay, ATP measurement and siRNA in CHO cells","pmids":["18572152"],"confidence":"Medium","gaps":["Modest (12%/25%) effect sizes","p73 competition not validated in disease models"]},{"year":2008,"claim":"Distinguished the signaling cascades by which CGRP and electrical activity separately control AChE catalytic subunit and anchoring partner expression at the NMJ.","evidence":"Muscle innervation/denervation, signaling inhibition, subunit mRNA/protein analysis","pmids":["18514177"],"confidence":"Medium","gaps":["Specific transcription factor targets not mapped","Largely synthesis of one lab's data"]},{"year":2009,"claim":"Mapped the pro-apoptotic interactions of an N-terminally extended AChE-S variant to death-pathway kinases and FAS, with an in vivo lethality readout.","evidence":"Peptide array, Co-IP validation, and microinjection into mouse oocytes","pmids":["19533292"],"confidence":"Medium","gaps":["Physiological abundance of N-AChE-S unclear","Direct causal interaction driving lethality not isolated"]},{"year":2010,"claim":"Provided genetic and pharmacological in vivo proof that AChE is a pro-apoptotic factor operating through the p53/Bax axis.","evidence":"AChE-knockout mice plus inhibitors in renal ischemia/reperfusion, with caspase, p53, Bax/Bcl-2 readouts","pmids":["20054652"],"confidence":"High","gaps":["Which AChE isoform mediates apoptosis not specified","Mechanism linking AChE to p53 phosphorylation undefined"]},{"year":2015,"claim":"Demonstrated a caspase-independent death mode driven by the AChE-R C-terminal peptide, extending AChE non-hydrolytic signaling to necroptosis in reproductive tissue.","evidence":"Follicular fluid enzymatic assay, IHC, ARP peptide treatment with RIPK1/MLKL inhibitors and LDH assay in granulosa cells","pmids":["25766324"],"confidence":"Medium","gaps":["Endogenous ARP generation in vivo not shown","Receptor coupling ARP to RIPK1 not identified"]},{"year":2015,"claim":"Showed engineered AChE retains catalysis and organophosphate reactivity with greatly extended circulation, establishing utility as a bioscavenger scaffold.","evidence":"Recombinant AChE-Fc enzymatic and ligand-binding assays, OP reactivity, and mouse pharmacokinetics","pmids":["26121420"],"confidence":"Medium","gaps":["Protective efficacy against OP poisoning not tested","Not a finding about endogenous gene function"]},{"year":2016,"claim":"Identified APP as an upstream repressor of AChE expression acting through its copper-binding E1 domain independent of APP processing.","evidence":"APP overexpression/siRNA, RT-PCR, Western, domain-deletion constructs and metalloproteinase inhibitors in neuronal cells","pmids":["27062894"],"confidence":"Medium","gaps":["Transcriptional intermediary linking E1 domain to ACHE not identified","Single neuronal model"]},{"year":2016,"claim":"Placed AChE within the cholinergic anti-inflammatory pathway by showing miR-124 directly suppresses it to restrain macrophage cytokine output.","evidence":"miR-124 overexpression, 3′-UTR targeting, cytokine ELISA and AChE inhibitor treatment in intestinal macrophages","pmids":["27977009"],"confidence":"Medium","gaps":["Relative contribution of AChE vs STAT3 targeting not separated","In vivo inflammation model not used"]},{"year":2017,"claim":"Defined isoform-selective post-transcriptional control by showing miR-132 preferentially binds AChE-R, enabling re-balancing of neurotransmission.","evidence":"Surface plasmon resonance binding and AM132 antisense treatment in mice with cortical miRNA-seq","pmids":["28209997"],"confidence":"Medium","gaps":["Structural basis of isoform selectivity unresolved","Functional behavioral consequences not detailed"]},{"year":2021,"claim":"Positioned AChE as a downstream effector of TDP-43 required for NMJ assembly, connecting it to ALS pathophysiology.","evidence":"Zebrafish tdp-43 morpholino knockdown with human AChE rescue, NMJ immunostaining and motor assays","pmids":["33499374"],"confidence":"Medium","gaps":["Whether catalytic or structural AChE function mediates rescue not resolved","Direct TDP-43 regulation of ache transcription not shown"]},{"year":null,"claim":"How the catalytically identical isoforms partition between hydrolytic and non-hydrolytic (apoptotic, necroptotic, proliferative) signaling roles in a given cell, and what the immediate molecular targets of nuclear AChE are, remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unifying mechanism linking AChE to p53/Bax or RIPK1/MLKL","Nuclear substrates/partners of pro-apoptotic AChE unidentified","Determinants of isoform-specific function in vivo undefined"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0016787","term_label":"hydrolase activity","supporting_discovery_ids":[1,8,18]},{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[8]}],"localization":[{"term_id":"GO:0005886","term_label":"plasma membrane","supporting_discovery_ids":[9,15]},{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[5]},{"term_id":"GO:0005576","term_label":"extracellular region","supporting_discovery_ids":[8]}],"pathway":[{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[5,7,8]},{"term_id":"R-HSA-112316","term_label":"Neuronal System","supporting_discovery_ids":[14,16]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[12]}],"complexes":["AChE-R/RACK1/PKCε complex","ColQ-anchored asymmetric AChE","PRiMA-anchored globular AChE"],"partners":["RACK1","PKCΕ","ENOLASE","FAS","GSK3","PRIMA","COLQ","P73"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"P22303","full_name":"Acetylcholinesterase","aliases":[],"length_aa":614,"mass_kda":67.8,"function":"Hydrolyzes rapidly the acetylcholine neurotransmitter released into the synaptic cleft allowing to terminate the signal transduction at the neuromuscular junction. 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interactions","url":"https://pubmed.ncbi.nlm.nih.gov/16289062","citation_count":13,"is_preprint":false},{"pmid":"29869722","id":"PMC_29869722","title":"In silico identification of AChE and PARP-1 dual-targeted inhibitors of Alzheimer's disease.","date":"2018","source":"Journal of molecular modeling","url":"https://pubmed.ncbi.nlm.nih.gov/29869722","citation_count":13,"is_preprint":false},{"pmid":"1452201","id":"PMC_1452201","title":"Induction and function of Fc epsilon RII on YT cells; possible role of ADF/thioredoxin in Fc epsilon RII expression.","date":"1992","source":"Immunobiology","url":"https://pubmed.ncbi.nlm.nih.gov/1452201","citation_count":13,"is_preprint":false},{"pmid":"31670615","id":"PMC_31670615","title":"Evaluation of the anti-conflict, reinforcing, and sedative effects of YT-III-31, a ligand functionally selective for α3 subunit-containing GABAA receptors.","date":"2019","source":"Journal of psychopharmacology (Oxford, England)","url":"https://pubmed.ncbi.nlm.nih.gov/31670615","citation_count":13,"is_preprint":false},{"pmid":"36635630","id":"PMC_36635630","title":"Antibacterial and antibiofilm potential of Lacticaseibacillus rhamnosus YT and its cell-surface extract.","date":"2023","source":"BMC microbiology","url":"https://pubmed.ncbi.nlm.nih.gov/36635630","citation_count":12,"is_preprint":false},{"pmid":"10076001","id":"PMC_10076001","title":"Identification, cloning and expression of p25, an AT-rich DNA-binding protein from the extreme thermophile, Thermus aquaticus YT-1.","date":"1999","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/10076001","citation_count":12,"is_preprint":false},{"pmid":"35644025","id":"PMC_35644025","title":"In silico analyses of acetylcholinesterase (AChE) and its genetic variants in interaction with the anti-Alzheimer drug Rivastigmine.","date":"2022","source":"Journal of cellular biochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/35644025","citation_count":12,"is_preprint":false},{"pmid":"30732643","id":"PMC_30732643","title":"Target-site mutations (AChE-G119S and kdr) in Guangxi Anopheles sinensis populations along the China-Vietnam border.","date":"2019","source":"Parasites & vectors","url":"https://pubmed.ncbi.nlm.nih.gov/30732643","citation_count":12,"is_preprint":false},{"pmid":"36678580","id":"PMC_36678580","title":"Identification of New N-methyl-piperazine Chalcones as Dual MAO-B/AChE Inhibitors.","date":"2023","source":"Pharmaceuticals (Basel, Switzerland)","url":"https://pubmed.ncbi.nlm.nih.gov/36678580","citation_count":11,"is_preprint":false},{"pmid":"16173095","id":"PMC_16173095","title":"Differential effects of proteasome inhibitors on cell cycle and apoptotic pathways in human YT and Jurkat cells.","date":"2006","source":"Journal of cellular biochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/16173095","citation_count":11,"is_preprint":false},{"pmid":"33423231","id":"PMC_33423231","title":"Acetylcholinesterase (AChE) Activity in Embryos of Zebrafish.","date":"2021","source":"Methods in molecular biology (Clifton, N.J.)","url":"https://pubmed.ncbi.nlm.nih.gov/33423231","citation_count":11,"is_preprint":false},{"pmid":"18281741","id":"PMC_18281741","title":"Inhibition of AChE by single and simultaneous exposure to malathion and its degradation products.","date":"2007","source":"General physiology and biophysics","url":"https://pubmed.ncbi.nlm.nih.gov/18281741","citation_count":11,"is_preprint":false},{"pmid":"33346154","id":"PMC_33346154","title":"Acetylcholinesterase (AChE) monoclonal antibody generation and validation for use as a biomarker of glyphosate-based herbicide exposure in commercial freshwater fish.","date":"2020","source":"Comparative biochemistry and physiology. Toxicology & pharmacology : CBP","url":"https://pubmed.ncbi.nlm.nih.gov/33346154","citation_count":11,"is_preprint":false},{"pmid":"16425445","id":"PMC_16425445","title":"Expression of acetylcholinesterase (AChE) and aryl acylamidase (AAA) during early zebrafish embryogenesis.","date":"2005","source":"Chemico-biological interactions","url":"https://pubmed.ncbi.nlm.nih.gov/16425445","citation_count":11,"is_preprint":false},{"pmid":"18514177","id":"PMC_18514177","title":"Transcriptional control of different subunits of AChE in muscles: signals triggered by the motor nerve-derived factors.","date":"2008","source":"Chemico-biological interactions","url":"https://pubmed.ncbi.nlm.nih.gov/18514177","citation_count":10,"is_preprint":false},{"pmid":"3477904","id":"PMC_3477904","title":"The Yt blood group system (ISBT No. 011). Genetic studies.","date":"1987","source":"Vox sanguinis","url":"https://pubmed.ncbi.nlm.nih.gov/3477904","citation_count":10,"is_preprint":false},{"pmid":"30978409","id":"PMC_30978409","title":"Repeated bifenthrin exposure alters hippocampal Nurr-1/AChE and induces depression-like behavior in adult rats.","date":"2019","source":"Behavioural brain research","url":"https://pubmed.ncbi.nlm.nih.gov/30978409","citation_count":10,"is_preprint":false},{"pmid":"35923722","id":"PMC_35923722","title":"Design, synthesis and biological evaluation of light-driven on-off multitarget AChE and MAO-B inhibitors.","date":"2022","source":"RSC medicinal chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/35923722","citation_count":9,"is_preprint":false},{"pmid":"37027384","id":"PMC_37027384","title":"Acetylcholinesterase, pro-inflammatory cytokines, and association of ACHE SNP rs 17228602 with male infertility.","date":"2023","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/37027384","citation_count":9,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":50976,"output_tokens":5193,"usd":0.115412,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":13599,"output_tokens":4917,"usd":0.09546,"stage2_stop_reason":"end_turn"},"total_usd":0.210872,"stage1_batch_id":"msgbatch_0179Z2pxRYBsXi2xADneafRw","stage2_batch_id":"msgbatch_01LaY9ZaVdgjWArcZo9eqQE5","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1993,\n      \"finding\": \"A single nucleotide mutation at codon 322 in the human ACHE gene (His322→Asn322, CAC→AAC) accounts for the YT blood group polymorphism: the wild-type His322 form is the YT1 (Yta) antigen and the variant Asn322 form is the YT2 (Ytb) antigen, establishing acetylcholinesterase as the YT blood group antigen on red blood cells.\",\n      \"method\": \"DNA sequencing of human ACHE gene from donors of known YT phenotype\",\n      \"journal\": \"American journal of human genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — direct DNA sequencing with genotype-phenotype correlation; foundational finding independently referenced across the corpus\",\n      \"pmids\": [\"8488842\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"AChE pre-mRNA undergoes 3′ alternative splicing to produce variant proteins (AChE-T, AChE-R, AChE-H) with identical enzymatic activity but distinct C-termini, leading to different multimeric assemblies, membrane-association patterns, protein partners, and non-hydrolytic functions; the variants are differentially induced under stress.\",\n      \"method\": \"Molecular biology (splice variant characterization), biochemical analysis of multimeric forms, review of experimental literature\",\n      \"journal\": \"Trends in neurosciences\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods across many studies; well-replicated finding reviewed here\",\n      \"pmids\": [\"16516310\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"The stress-induced AChE-R variant forms a triple complex with PKCε and the scaffold protein RACK1 in human U87MG glioblastoma cells, enhances PKCε phosphorylation, and promotes cell proliferation (BrdU incorporation); CREB suppresses this proliferative effect via a PKC-mediated pathway.\",\n      \"method\": \"Co-immunoprecipitation, PKC phosphorylation assay, BrdU incorporation, antisense knockdown, kinase inhibitor experiments\",\n      \"journal\": \"Neoplasia (New York, N.Y.)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal Co-IP and functional readouts in a single lab with multiple orthogonal methods\",\n      \"pmids\": [\"15153340\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"The C-terminus of AChE-R (and N-AChE-R) interacts with the glycolytic enzyme enolase and with scaffold protein RACK1 (via yeast two-hybrid and co-immunoprecipitation); the AChE-R C-terminal peptide (ARP) elevates enolase activity by ~12% in vitro, and CHO cells expressing AChE-R (but not AChE-S) show 25% higher ATP levels. AChE-R also competes with RACK1 for interaction with pro-apoptotic p73, modulating the p73 pathway and conferring cis-platinum resistance.\",\n      \"method\": \"Yeast two-hybrid screen, Co-immunoprecipitation, in vitro enolase activity assay, ATP measurement, siRNA knockdown, Western blot\",\n      \"journal\": \"Chemico-biological interactions\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple orthogonal methods (yeast two-hybrid, Co-IP, in vitro enzyme assay, cellular ATP measurement) in single lab\",\n      \"pmids\": [\"18572152\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"The N-terminally extended AChE-S variant (N-AChE-S) promotes apoptosis and interacts with kinases GSK3, Aurora, and GAK, membrane integrin receptors, and the death receptor FAS, as identified by peptide array and validated by co-immunoprecipitation; microinjection of N-AChE-S into mouse oocytes caused embryonic death at the zygotic stage.\",\n      \"method\": \"Microinjection into mouse oocytes, peptide array, co-immunoprecipitation\",\n      \"journal\": \"Journal of neural transmission\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-immunoprecipitation validation of peptide array hits plus in vivo functional assay, single lab\",\n      \"pmids\": [\"19533292\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"AChE expression increases in apoptotic neuroblastoma SK-N-SH cells during long-term culture, with AChE aggregating in the nucleus; suppression of AChE with antisense oligonucleotide rescued cells from apoptosis. Caspase-3 activity was parallel with AChE activation, suggesting AChE plays a pro-apoptotic role in neuronal cells.\",\n      \"method\": \"Antisense oligonucleotide knockdown, immunofluorescence/subcellular fractionation, caspase-3 activity assay\",\n      \"journal\": \"Neuroscience research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — antisense loss-of-function with specific apoptotic phenotype, localization by imaging, single lab\",\n      \"pmids\": [\"11985878\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"AChE increases amyloid fibril assembly forming highly toxic AChE–Aβ complexes; these complexes decrease cytoplasmic β-catenin levels (a key Wnt signaling component) in hippocampal neurons and in vivo, and Wnt-3a activation rescues neuronal survival from Aβ-AChE neurotoxicity.\",\n      \"method\": \"In vitro fibril assembly assay, hippocampal neuron culture, in vivo rat hippocampal injection, β-catenin quantification, Wnt pathway manipulation\",\n      \"journal\": \"Current Alzheimer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vitro and in vivo assays with pathway manipulation, single lab\",\n      \"pmids\": [\"15975054\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"AChE deficiency (AChE-knockout mice) or pharmacological AChE inhibition reduces renal ischemia/reperfusion-induced apoptosis, with decreased caspase-8, -9, -12, and -3 activation, reduced p53 induction and Ser15 phosphorylation, and decreased Bax/Bcl-2 ratio, establishing AChE as a pro-apoptotic factor in vivo.\",\n      \"method\": \"AChE-deficient mouse model, pharmacological inhibition (huperzine A, tacrine, donepezil), caspase activity assays, Western blot (p53, Bax, Bcl-2), histology\",\n      \"journal\": \"Apoptosis\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic knockout plus pharmacological inhibition with multiple orthogonal apoptotic readouts; consistent findings across methods\",\n      \"pmids\": [\"20054652\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Enzymatically active AChE is produced by human ovarian granulosa cells and is present in follicular fluid where it hydrolyzes ACh; the readthrough isoform AChE-R is identified in granulosa, theca, and luteal cells. A synthetic AChE-R C-terminal peptide (ARP) induces caspase-independent, RIPK1/MLKL-dependent necroptosis (balloon-like morphology, LDH release) in primary granulosa cells, blocked by necrostatin-1 and necrosulfonamide.\",\n      \"method\": \"Enzymatic activity assay of follicular fluid, immunohistochemistry, ARP peptide treatment of primary cells, RIPK1/MLKL inhibitor experiments, LDH assay, morphological analysis\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — enzymatic assay, pharmacological pathway dissection, and morphological readout; single lab with multiple methods\",\n      \"pmids\": [\"25766324\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"APP overexpression in neuronal cells substantially decreases AChE mRNA, protein, and catalytic activity as well as PRiMA mRNA; siRNA knockdown of APP upregulates AChE mRNA. This regulation does not involve APP processing/AICD but requires the E1 region of APP, specifically its copper-binding domain. AChE shedding from the cell membrane involves a metalloproteinase-mediated mechanism stimulated by cholinergic agonists.\",\n      \"method\": \"APP overexpression and siRNA knockdown, RT-PCR, Western blot, AChE activity assay, domain deletion constructs, metalloproteinase inhibitor experiments\",\n      \"journal\": \"Chemico-biological interactions\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — domain-mapping with deletion constructs and siRNA, multiple readouts, single lab\",\n      \"pmids\": [\"27062894\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"AChE-S interacts with the NFκB-activating scaffold protein RACK1 intracellularly, potentially preventing NFκB activation; fluoxetine intercepts LPS-induced decreases in AChE-S, and this is associated with reduced pro-inflammatory cytokine production. The interaction between AChE-S and RACK1/PKCβII was demonstrated by structural modeling and co-immunoprecipitation.\",\n      \"method\": \"Co-immunoprecipitation, ELISA (cytokine measurement), structural modelling, human PBMC experiments\",\n      \"journal\": \"Journal of molecular neuroscience\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single lab, Co-IP supported by modelling, limited mechanistic follow-up\",\n      \"pmids\": [\"24258317\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Using surface plasmon resonance, miR-132 preferentially targets the soluble AChE-R isoform over the synaptic AChE-S isoform; peripheral miR-132 blockade by antisense oligonucleotide (AM132) elevated muscle AChE-R 10-fold over AChE-S, re-balancing neurotransmission, and inversely modulated brain immune-related miRNAs.\",\n      \"method\": \"Surface plasmon resonance (SPR), antisense oligonucleotide treatment in mice, cortical miRNA-sequencing, Western blot\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — SPR binding assay (direct physical measurement) plus in vivo functional consequence, single lab\",\n      \"pmids\": [\"28209997\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"miR-124 directly targets the 3′-UTR of AChE mRNA (and STAT3 mRNA) in intestinal macrophages, suppressing AChE protein expression; overexpression of miR-124 inhibits macrophage activation and reduces IL-6 and TNF-α production, while AChE inhibitors suppress LPS-induced cytokine production, positioning AChE as a negative regulator of the cholinergic anti-inflammatory pathway in intestinal macrophages.\",\n      \"method\": \"miRNA overexpression, 3′-UTR luciferase reporter assay (implied by 'directly target'), Western blot, ELISA (cytokines), AChE inhibitor treatment\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct 3′-UTR targeting validated with gain-of-function and inhibitor experiments; single lab\",\n      \"pmids\": [\"27977009\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"CGRP-induced AChE expression in chick muscle is mediated by a cAMP-dependent protein kinase (PKA) pathway: CGRP or PKA activators increase intracellular PKA activity ~2-fold, and in vivo transfection of constitutively active Gαs increases AChE mRNA and protein ~2-fold, while constitutively active Gαi has the opposite effect; PKA inhibitors block the induction.\",\n      \"method\": \"PKA activity assay in cultured chick myotubes, in vivo transfection of constitutively active G-protein constructs, Western blot, PKA inhibitor treatment\",\n      \"journal\": \"Neuroreport\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vitro and in vivo gain-of-function and inhibitor experiments with multiple readouts; single lab\",\n      \"pmids\": [\"10757523\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"Motor nerve-derived CGRP and nerve-evoked electrical activity differentially regulate expression of AChE(T), PRiMA, and ColQ in muscle via distinct downstream signaling cascades, controlling the formation of asymmetric AChE species (A4, A8, A12 with ColQ) and globular G4 AChE (with PRiMA) at the neuromuscular junction.\",\n      \"method\": \"Muscle innervation/denervation experiments, signaling cascade inhibition, gene expression analysis (AChE subunit mRNA and protein), transgenic/transfection approaches\",\n      \"journal\": \"Chemico-biological interactions\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple orthogonal experiments in muscle biology context; single lab review of own data\",\n      \"pmids\": [\"18514177\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Genetic deletion of exon 5 and/or exon 6 of the mouse ACHE gene by homologous recombination demonstrated that exon 5 splice produces the GPI-anchored hematopoietic form, and exon 6 splice produces the form binding PRiMA/ColQ in brain and muscle; deletion of an intronic enhancer region eliminated AChE expression specifically in muscle (while preserving near-normal brain expression), establishing a tissue-specific regulatory element.\",\n      \"method\": \"Homologous recombination in ES cells, Cre/loxP conditional deletion, tissue AChE activity assay, Northern/Western blot\",\n      \"journal\": \"Chemico-biological interactions\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — multiple independent gene-targeted mouse lines with tissue-specific phenotypic readouts; orthogonal genetic methods\",\n      \"pmids\": [\"16289062\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"In a zebrafish TDP-43 loss-of-function ALS model, knockdown of tdp-43 decreased ache expression and caused NMJ disassembly and motor deficits; overexpression of human AChE rescued both pre- and post-synaptic NMJ defects, establishing AChE as a downstream effector of TDP-43 required for NMJ integrity.\",\n      \"method\": \"Zebrafish tdp-43 morpholino knockdown, human AChE mRNA overexpression rescue, NMJ immunostaining, motor behavior assay\",\n      \"journal\": \"Cells\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function plus rescue experiment with defined structural and behavioral phenotype; single lab\",\n      \"pmids\": [\"33499374\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Two new allosteric sites in AChE (beyond the known peripheral anionic site) were identified by computational tools; three small-molecule allosteric inhibitors validated by in vitro kinetic assays and molecular dynamics confirmed allosteric inhibition of AChE activity.\",\n      \"method\": \"Computational allosteric site identification, virtual screening, in vitro AChE inhibition assay, kinetic analysis, molecular dynamics simulation\",\n      \"journal\": \"Journal of enzyme inhibition and medicinal chemistry\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — in vitro kinetic assay plus computational; no mutagenesis or structural validation of the allosteric sites\",\n      \"pmids\": [\"29873262\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"A recombinant AChE–Fc fusion protein (AChE-Fc) retains full enzymatic activity and binding affinity for active-site ligands (BW284c5, propidium) and reacts with organophosphate nerve agents (sarin, VX); when administered to mice, AChE-Fc exhibits markedly prolonged circulatory residence (MRT ~6000 min) compared to other recombinant cholinesterase bioscavengers.\",\n      \"method\": \"Recombinant protein expression, enzymatic activity assay, ligand binding assay, organophosphate reactivity assay, mouse pharmacokinetic study\",\n      \"journal\": \"Bioconjugate chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vitro biochemical assays plus in vivo pharmacokinetics; single lab with multiple orthogonal methods\",\n      \"pmids\": [\"26121420\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Polymorphisms in the adjacent PON1 and ACHE genes interact: carriers of distinct compound ACHE/PON1 polymorphisms show genotype-specific differences in plasma AChE and paraoxonase activities; PON1 activity displays inverse association with AChE activity, suggesting cross-regulation between the two loci.\",\n      \"method\": \"Genotyping of 7 polymorphic sites, plasma enzyme activity assays (AChE, BChE, arylesterase, paraoxonase) in 157 individuals, molecular modelling\",\n      \"journal\": \"Journal of neurochemistry\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — population-level biochemical correlation with genotype; no direct experimental manipulation of the interaction\",\n      \"pmids\": [\"15715671\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ACHE encodes acetylcholinesterase, a fast hydrolase that terminates cholinergic neurotransmission; it is alternatively spliced at the 3′ end to produce distinct isoforms (AChE-T, AChE-R, AChE-H/S) with identical catalytic domains but different C-termini that dictate membrane anchoring (GPI for hematopoietic AChE-H, ColQ/PRiMA for synaptic AChE-T), protein partners (RACK1, PKCε, enolase, GSK3, FAS), and non-enzymatic functions including promotion of apoptosis (nuclear translocation, caspase activation, p53/Bax regulation), regulation of cell proliferation via PKCε/CREB, stimulation of necroptosis (RIPK1/MLKL pathway) in ovarian cells, modulation of Aβ fibril assembly and Wnt/β-catenin signaling, and cholinergic anti-inflammatory regulation; expression of the synaptic form in muscle is controlled by nerve-derived CGRP acting through a PKA-dependent pathway and by an intronic enhancer; a His322Asn substitution defines the YT (Yt) blood group polymorphism on red blood cells.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ACHE encodes acetylcholinesterase, a hydrolase whose pre-mRNA undergoes 3′ alternative splicing to generate isoforms (AChE-T/S, AChE-R, AChE-H) that share an identical catalytic domain but carry distinct C-termini dictating their multimeric assembly, membrane association, and non-hydrolytic protein partnerships [#1]. Tissue-specific deletion of exon 5 versus exon 6 in mice established that the exon-5 splice yields the GPI-anchored hematopoietic form while the exon-6 splice produces the form binding PRiMA/ColQ in brain and muscle, and an intronic enhancer drives muscle-specific expression [#15]. At the neuromuscular junction, expression of these synaptic species is controlled by nerve-derived CGRP through a PKA-dependent cascade and by nerve-evoked electrical activity, which coordinate assembly of ColQ-anchored asymmetric and PRiMA-anchored globular forms [#13, #14]; AChE itself acts as a downstream effector required for NMJ integrity in a TDP-43 ALS model [#16]. Beyond catalysis, the stress-induced readthrough variant AChE-R forms a complex with the scaffold RACK1 and PKCε to drive proliferation under CREB suppression and partners with enolase to raise cellular ATP [#2, #3], while its C-terminal peptide triggers RIPK1/MLKL-dependent necroptosis in ovarian granulosa cells [#8]. AChE functions broadly as a pro-apoptotic factor: it accumulates in the nucleus of dying cells, and its genetic loss or pharmacological inhibition reduces caspase activation, p53 induction, and the Bax/Bcl-2 ratio in vivo [#5, #7]. In neurodegeneration, AChE promotes amyloid fibril assembly into toxic AChE–Aβ complexes that deplete β-catenin and impair Wnt signaling [#6], and its own expression is suppressed by the copper-binding E1 domain of APP and by miR-124/miR-132 targeting [#9, #11, #12], the latter positioning AChE as a regulator of the cholinergic anti-inflammatory pathway [#12]. The His322Asn substitution defines the YT blood group polymorphism on red blood cells [#0].\"\n  ,\n  \"teleology\": [\n    {\n      \"year\": 1993,\n      \"claim\": \"Established the molecular basis of a human blood group antigen by mapping it to ACHE, showing the gene product is displayed on red cells.\",\n      \"evidence\": \"DNA sequencing of ACHE from donors of known YT phenotype, correlating His322Asn with Yta/Ytb\",\n      \"pmids\": [\"8488842\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Does not address whether the substitution alters catalytic activity or membrane anchoring\", \"No structural explanation for antigenicity\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Defined the signaling pathway by which motor nerve input drives synaptic AChE expression in muscle, answering how innervation controls enzyme levels.\",\n      \"evidence\": \"PKA activity assays, constitutively active Gαs/Gαi transfection, and PKA inhibitors in chick myotubes\",\n      \"pmids\": [\"10757523\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Downstream transcription factors not identified\", \"Chick system; human relevance not directly tested\"]\n    },\n    {\n      \"year\": 2002,\n      \"claim\": \"First implicated AChE in apoptosis as a non-catalytic role, showing its induction and nuclear aggregation are required for neuronal cell death.\",\n      \"evidence\": \"Antisense knockdown, subcellular fractionation/imaging, and caspase-3 assay in SK-N-SH cells\",\n      \"pmids\": [\"11985878\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Nuclear targets of AChE not identified\", \"Isoform responsible not resolved\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Identified a proliferative signaling function for the stress-induced AChE-R variant through a defined scaffold/kinase complex, distinguishing isoform-specific non-hydrolytic activity.\",\n      \"evidence\": \"Co-IP, PKC phosphorylation and BrdU assays, antisense knockdown in U87MG glioblastoma cells\",\n      \"pmids\": [\"15153340\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Single cell line\", \"Mechanism by which CREB suppresses the effect not fully resolved\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Linked AChE to Alzheimer pathology mechanistically by showing it accelerates Aβ fibril assembly and impairs neuroprotective Wnt/β-catenin signaling.\",\n      \"evidence\": \"In vitro fibril assays, hippocampal neuron culture, in vivo rat injection, β-catenin quantification and Wnt-3a rescue\",\n      \"pmids\": [\"15975054\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether catalytic activity is required for fibril promotion not established\", \"Direct AChE–β-catenin link not defined\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Resolved the genetic architecture of isoform-specific anchoring and tissue-specific transcription via targeted deletion of individual exons and a regulatory element.\",\n      \"evidence\": \"Homologous recombination and Cre/loxP deletion of exons 5/6 and intronic enhancer in mice, with tissue activity assays\",\n      \"pmids\": [\"16289062\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Trans-acting factors binding the muscle enhancer not identified\", \"Functional consequences of GPI vs PRiMA anchoring in vivo not detailed here\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Consolidated the model that 3′ splicing generates catalytically identical but functionally distinct AChE isoforms differentially induced by stress.\",\n      \"evidence\": \"Splice variant and multimeric form characterization reviewing biochemical literature\",\n      \"pmids\": [\"16516310\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Review consolidation rather than new primary data\", \"Quantitative tissue distribution of variants not the focus\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Expanded the non-hydrolytic interactome of AChE-R to glycolytic and apoptotic machinery, linking the isoform to cellular energetics and chemoresistance.\",\n      \"evidence\": \"Yeast two-hybrid, Co-IP, in vitro enolase assay, ATP measurement and siRNA in CHO cells\",\n      \"pmids\": [\"18572152\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Modest (12%/25%) effect sizes\", \"p73 competition not validated in disease models\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Distinguished the signaling cascades by which CGRP and electrical activity separately control AChE catalytic subunit and anchoring partner expression at the NMJ.\",\n      \"evidence\": \"Muscle innervation/denervation, signaling inhibition, subunit mRNA/protein analysis\",\n      \"pmids\": [\"18514177\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Specific transcription factor targets not mapped\", \"Largely synthesis of one lab's data\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Mapped the pro-apoptotic interactions of an N-terminally extended AChE-S variant to death-pathway kinases and FAS, with an in vivo lethality readout.\",\n      \"evidence\": \"Peptide array, Co-IP validation, and microinjection into mouse oocytes\",\n      \"pmids\": [\"19533292\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Physiological abundance of N-AChE-S unclear\", \"Direct causal interaction driving lethality not isolated\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Provided genetic and pharmacological in vivo proof that AChE is a pro-apoptotic factor operating through the p53/Bax axis.\",\n      \"evidence\": \"AChE-knockout mice plus inhibitors in renal ischemia/reperfusion, with caspase, p53, Bax/Bcl-2 readouts\",\n      \"pmids\": [\"20054652\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Which AChE isoform mediates apoptosis not specified\", \"Mechanism linking AChE to p53 phosphorylation undefined\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Demonstrated a caspase-independent death mode driven by the AChE-R C-terminal peptide, extending AChE non-hydrolytic signaling to necroptosis in reproductive tissue.\",\n      \"evidence\": \"Follicular fluid enzymatic assay, IHC, ARP peptide treatment with RIPK1/MLKL inhibitors and LDH assay in granulosa cells\",\n      \"pmids\": [\"25766324\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Endogenous ARP generation in vivo not shown\", \"Receptor coupling ARP to RIPK1 not identified\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Showed engineered AChE retains catalysis and organophosphate reactivity with greatly extended circulation, establishing utility as a bioscavenger scaffold.\",\n      \"evidence\": \"Recombinant AChE-Fc enzymatic and ligand-binding assays, OP reactivity, and mouse pharmacokinetics\",\n      \"pmids\": [\"26121420\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Protective efficacy against OP poisoning not tested\", \"Not a finding about endogenous gene function\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Identified APP as an upstream repressor of AChE expression acting through its copper-binding E1 domain independent of APP processing.\",\n      \"evidence\": \"APP overexpression/siRNA, RT-PCR, Western, domain-deletion constructs and metalloproteinase inhibitors in neuronal cells\",\n      \"pmids\": [\"27062894\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Transcriptional intermediary linking E1 domain to ACHE not identified\", \"Single neuronal model\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Placed AChE within the cholinergic anti-inflammatory pathway by showing miR-124 directly suppresses it to restrain macrophage cytokine output.\",\n      \"evidence\": \"miR-124 overexpression, 3′-UTR targeting, cytokine ELISA and AChE inhibitor treatment in intestinal macrophages\",\n      \"pmids\": [\"27977009\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Relative contribution of AChE vs STAT3 targeting not separated\", \"In vivo inflammation model not used\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Defined isoform-selective post-transcriptional control by showing miR-132 preferentially binds AChE-R, enabling re-balancing of neurotransmission.\",\n      \"evidence\": \"Surface plasmon resonance binding and AM132 antisense treatment in mice with cortical miRNA-seq\",\n      \"pmids\": [\"28209997\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Structural basis of isoform selectivity unresolved\", \"Functional behavioral consequences not detailed\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Positioned AChE as a downstream effector of TDP-43 required for NMJ assembly, connecting it to ALS pathophysiology.\",\n      \"evidence\": \"Zebrafish tdp-43 morpholino knockdown with human AChE rescue, NMJ immunostaining and motor assays\",\n      \"pmids\": [\"33499374\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether catalytic or structural AChE function mediates rescue not resolved\", \"Direct TDP-43 regulation of ache transcription not shown\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How the catalytically identical isoforms partition between hydrolytic and non-hydrolytic (apoptotic, necroptotic, proliferative) signaling roles in a given cell, and what the immediate molecular targets of nuclear AChE are, remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unifying mechanism linking AChE to p53/Bax or RIPK1/MLKL\", \"Nuclear substrates/partners of pro-apoptotic AChE unidentified\", \"Determinants of isoform-specific function in vivo undefined\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0016787\", \"supporting_discovery_ids\": [1, 8, 18]},\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [8]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005886\", \"supporting_discovery_ids\": [9, 15]},\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [5]},\n      {\"term_id\": \"GO:0005576\", \"supporting_discovery_ids\": [8]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [5, 7, 8]},\n      {\"term_id\": \"R-HSA-112316\", \"supporting_discovery_ids\": [14, 16]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [12]}\n    ],\n    \"complexes\": [\"AChE-R/RACK1/PKCε complex\", \"ColQ-anchored asymmetric AChE\", \"PRiMA-anchored globular AChE\"],\n    \"partners\": [\"RACK1\", \"PKCε\", \"enolase\", \"FAS\", \"GSK3\", \"PRiMA\", \"ColQ\", \"p73\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":7,"faith_total":7,"faith_pct":100.0}}