{"gene":"CLEC4E","run_date":"2026-04-28T17:28:52","timeline":{"discoveries":[{"year":2008,"finding":"Mincle selectively associates with the Fc receptor common gamma-chain (FcRγ), an ITAM-bearing adaptor, to activate macrophages and produce inflammatory cytokines and chemokines. SAP130, a component of small nuclear ribonucleoprotein released from dead cells, was identified as a Mincle ligand, and Mincle-mediated sensing of non-homeostatic cell death drives neutrophil infiltration into damaged tissue.","method":"Co-immunoprecipitation, reporter cell assays, Mincle-specific antibody blockade in vivo, Mincle-deficient macrophages","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 — reciprocal co-IP, functional KO, in vivo blockade, replicated across subsequent papers","pmids":["18776906"],"is_preprint":false},{"year":2009,"finding":"Mincle is an essential receptor for the mycobacterial glycolipid trehalose-6,6'-dimycolate (TDM; cord factor). Delipidation of heat-killed mycobacteria abolished Mincle-expressing cell activation; lipid extract analysis identified TDM as the Mincle ligand. Mincle-deficient macrophages failed to produce inflammatory cytokines and nitric oxide in response to TDM, and Mincle-deficient mice did not form TDM-induced lung granulomas.","method":"Lipid fractionation, reporter cell assay, Mincle-deficient macrophages and mice, in vivo TDM challenge","journal":"The Journal of experimental medicine","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with defined phenotype, ligand identification by biochemical fractionation, replicated across multiple labs","pmids":["20008526"],"is_preprint":false},{"year":2009,"finding":"Mincle specifically recognizes Malassezia species among 50 fungal species tested. Mutation of the putative mannose-binding motif within the C-type lectin domain abolished Malassezia recognition. Glycoconjugate microarray showed Mincle selectively binds α-mannose but not mannan. Mincle-deficient mice had impaired cytokine/chemokine production and in vivo inflammatory responses to Malassezia.","method":"Reporter cell screening, site-directed mutagenesis, glycoconjugate microarray, Mincle-deficient mouse experiments","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1-2 — mutagenesis, glycan array, and genetic KO in one study","pmids":["19171887"],"is_preprint":false},{"year":2010,"finding":"The FcRγ adaptor protein is essential for Mincle-mediated macrophage activation and Th17 adjuvanticity in response to TDM and its synthetic analog TDB. Recombinant Mincle-Fc fusion protein specifically binds these glycolipids. Genetic ablation of Mincle abolished TDM/TDB-induced macrophage activation and T cell immune responses to a tuberculosis subunit vaccine.","method":"Recombinant Mincle-Fc binding assay, genetic knockout of Mincle and FcRγ, in vivo vaccination experiments","journal":"Journal of immunology (Baltimore, Md. : 1950)","confidence":"High","confidence_rationale":"Tier 2 — direct binding assay plus genetic KO with defined immunological phenotype, replicated finding","pmids":["20164423"],"is_preprint":false},{"year":2013,"finding":"Crystal structures of Mincle (and MCL) reveal Ca2+-dependent sugar binding and a unique shallow hydrophobic region adjacent to the sugar-binding site that accommodates the fatty acid moieties of glycolipids. Functional mutagenesis of residues in these regions confirmed the deduced binding mode for glycolipid recognition.","method":"X-ray crystallography of Mincle CRD, site-directed mutagenesis, functional reporter assays with glycolipid ligands","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 — crystal structure with mutagenesis validation","pmids":["24101491"],"is_preprint":false},{"year":2013,"finding":"Crystallographic structural analysis and site-directed mutagenesis of bovine mincle CRD defined an extended binding site encompassing both the trehalose headgroup and a portion of attached acyl chains. One glucose residue of trehalose is liganded to Ca2+ in a manner common to C-type CRDs; the second glucose is accommodated in a novel secondary binding site providing 36-fold higher affinity for trehalose vs. glucose. An adjacent hydrophobic groove docks one acyl chain, allowing small molecule analogs to bind with 52-fold higher affinity than trehalose alone.","method":"X-ray crystallography, site-directed mutagenesis, binding studies with glycolipid mimics","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — crystal structure, mutagenesis, and quantitative binding assays in a single study","pmids":["23960080"],"is_preprint":false},{"year":2013,"finding":"Upon receptor activation, Mincle signals via the Syk-CARD9-Bcl10-MALT1 pathway by recruiting the ITAM-bearing FcεRI-γ. MCL co-precipitates with FcεRI-γ via Mincle; Mincle and MCL form heteromers on the cell surface, and MCL/FcεRI-γ association increases Mincle expression and enhances phagocytosis of antibody-coated beads.","method":"Flow cytometry, co-immunoprecipitation, biochemical analysis, phagocytosis assay","journal":"European journal of immunology","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP and functional phagocytosis assay, consistent with other studies on FcRγ coupling","pmids":["23921530"],"is_preprint":false},{"year":2013,"finding":"Mincle activation by TDM/TDB induces recognition through the CARD9 pathway, and recognition of TDM by Mincle partially explains the CARD9 requirement for pro-IL-1β expression. Peptidoglycan plus cord factor in mineral oil synergized to recapitulate Th17-promoting activity of CFA, with responses diminished in caspase-1- and CARD9-deficient mice, placing Mincle upstream of CARD9-dependent IL-1β transcription.","method":"Genetic epistasis (CARD9, caspase-1, ASC, NLRP3 KO mice), biochemical fractionation, adoptive transfer","journal":"Journal of immunology (Baltimore, Md. : 1950)","confidence":"High","confidence_rationale":"Tier 2 — epistasis with multiple KO lines plus biochemical fractionation","pmids":["23630357"],"is_preprint":false},{"year":2014,"finding":"Fonsecaea monophora engages CLR mincle to induce an E3 ubiquitin ligase Mdm2-dependent degradation pathway via Syk-CARD9-mediated PKB signaling, leading to loss of nuclear IRF1 activity and blocking IL12A transcription, thereby suppressing Th1 responses and promoting immune evasion.","method":"Genetic knockdown, reporter assays, signaling pathway inhibitors, chromatin/nucleosome remodeling assays","journal":"Cell host & microbe","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods defining a novel Mincle signaling mechanism","pmids":["24721577"],"is_preprint":false},{"year":2014,"finding":"TDM-induced Mincle expression is dependent on Dectin-3-mediated NF-κB activation through the CARD9-BCL10-MALT1 complex. NF-κB but not NFAT binds the Mincle promoter. Dectin-3-deficient macrophages fail to upregulate Mincle in response to TDM.","method":"Genetic KO (Dectin-3, CARD9), NF-κB/NFAT inhibitors, chromatin immunoprecipitation at Mincle promoter","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 — genetic KO combined with promoter ChIP and signaling inhibitor analysis","pmids":["25202022"],"is_preprint":false},{"year":2014,"finding":"Human mincle binds acylated trehalose derivatives via a mechanism similar to bovine mincle: one glucose of trehalose is ligated to the principal Ca2+-binding site; the second glucose contacts a secondary site; and acyl chains at 6-OH groups enhance affinity in a chain-length and hydrophobic-groove-dependent manner. Mutagenesis and synthetic analog binding studies showed the available crystal structure of human mincle CRD is not in the fully active conformation.","method":"Site-directed mutagenesis of human mincle, binding studies with synthetic TDM analogs","journal":"Glycobiology","confidence":"High","confidence_rationale":"Tier 1-2 — structure-guided mutagenesis with quantitative binding assays","pmids":["25028392"],"is_preprint":false},{"year":2015,"finding":"MCL interacts with Mincle through its stalk region to promote Mincle surface expression. MCL-deficient BMDCs show reduced Mincle protein (not mRNA) after stimulation. MCL transgenic mice show enhanced Mincle surface expression. A hydrophobic repeat in MCL stalk is required; substitution of four hydrophobic residues (MCL4S) abolishes the function, and MCL4S fails to restore TDM responses in MCL-deficient cells.","method":"Co-immunoprecipitation, domain swap/mutagenesis, transgenic and KO mice, flow cytometry for surface expression","journal":"Journal of immunology (Baltimore, Md. : 1950)","confidence":"High","confidence_rationale":"Tier 2 — protein-protein interaction by Co-IP, mutagenesis, and genetic complementation","pmids":["25888641"],"is_preprint":false},{"year":2015,"finding":"Human Mincle binds cholesterol crystals (but not murine Mincle) and triggers innate immune responses including pro-inflammatory cytokine production. Purified cholesterol in plate-coated and crystallized forms activates hMincle-expressing reporter cells; anti-human Mincle antibody inhibits this response in human dendritic cells.","method":"Reporter cell assays, MS lipid identification, antibody blockade, transfection of murine macrophages with hMincle","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 — direct ligand identification by MS with functional reporter and antibody blockade, species specificity confirmed","pmids":["26296894"],"is_preprint":false},{"year":2016,"finding":"Mincle signaling in macrophages inhibits cholesterol efflux and induces a Syk-mediated endoplasmic reticulum stress response (dependent on Chop and Ire1a), leading to proinflammatory mediator and growth factor induction. Clec4e-/- bone marrow transplantation into Ldlr-/- mice reduces lipid accumulation, ER stress, macrophage inflammation and proliferation, and significantly limits atherosclerosis.","method":"Bone marrow chimera, Clec4e-/- genetic KO, in vitro macrophage assays, Syk inhibition, Chop/Ire1a/Atf3 KO","journal":"Circulation","confidence":"High","confidence_rationale":"Tier 2 — multiple genetic KOs with orthogonal mechanistic readouts, in vivo disease model","pmids":["27587433"],"is_preprint":false},{"year":2016,"finding":"Leishmania triggers a Mincle-dependent inhibitory ITAM (ITAMi) configuration characterized by SHP1 coupling to the FcRγ chain, impairing dendritic cell activation and adaptive immunity. Mincle-deficient mice had milder pathology and lower parasite burdens. Selective loss of SHP1 in CD11c+ cells phenocopied enhanced adaptive immunity to Leishmania.","method":"Mincle-deficient mice, conditional SHP1 KO in CD11c+ cells, signaling analysis (SHP1-FcRγ coupling), parasite burden quantification","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis with two KO lines, defined mechanistic switch (ITAMi vs. ITAM)","pmids":["27742545"],"is_preprint":false},{"year":2016,"finding":"Mincle is essential for maintaining the M1 macrophage phenotype through Syk signaling. Mincle expression in macrophages is regulated by TLR4/NF-κB signaling; NF-κB/p65 binds the Mincle promoter in LPS-primed macrophages. Mincle knockdown or Syk inhibition suppresses LPS-induced IL-1β, MCP-1, and iNOS expression. Adoptive transfer of Mincle+ M1 macrophages promotes cisplatin-induced renal inflammation, prevented by Mincle knockdown.","method":"Mincle knockdown, Syk inhibitor, NF-κB/p65 ChIP at Mincle promoter, adoptive transfer, in vivo AKI model","journal":"Kidney international","confidence":"High","confidence_rationale":"Tier 2 — ChIP, genetic KD, adoptive transfer with defined in vivo phenotype","pmids":["28017324"],"is_preprint":false},{"year":2016,"finding":"Mincle is the key switch for macrophage transition from cytokine expression to high nitric oxide production during mycobacterial infection. Beyond stimulating TLR-mediated transcription, Mincle enhances translation of key genes for nitric oxide synthesis through p38 and eIF5A hypusination, leading to granuloma resolution. Thus Mincle has dual transcriptional and translational regulatory functions.","method":"Mincle-deficient macrophages, p38 inhibitors, eIF5A hypusination assays, translation reporter assays, murine granuloma model","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with orthogonal mechanistic dissection of transcriptional vs. translational control","pmids":["27089465"],"is_preprint":false},{"year":2016,"finding":"Necroptosis-induced cytoplasmic SAP130 (a subunit of the histone deacetylase complex) in pancreatic ductal adenocarcinoma is sensed by Mincle on tumor-infiltrating myeloid cells, promoting oncogenesis and macrophage-induced immune suppression. Mincle deletion protected against PDA and reprogrammed the tumor microenvironment by releasing T cells into anti-tumor activity.","method":"Mincle-/- and RIP3-/- mouse models of PDA, SAP130 cytoplasmic expression analysis, adoptive transfer, T cell depletion experiments","journal":"Nature","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis with multiple KO lines, defined cellular mechanism in vivo","pmids":["27049944"],"is_preprint":false},{"year":2016,"finding":"IRAKM Myddosome (formed at low LPS concentrations reflecting pathophysiological levels) mediates up-regulation of Mincle in macrophages. Mincle then senses SAP130 (released by ethanol-damaged hepatocytes), and SAP130 plus LPS synergistically activate inflammatory responses including inflammasome activation, contributing to alcoholic liver disease.","method":"IRAKM-/- and Mincle-/- mice, bone marrow-derived macrophage ex vivo assays, ethanol feeding model, inflammasome activation assays","journal":"Hepatology (Baltimore, Md.)","confidence":"High","confidence_rationale":"Tier 2 — two genetic KO models with epistasis, defined IRAKM-Mincle axis","pmids":["27628766"],"is_preprint":false},{"year":2016,"finding":"C/EBPβ is a central transcriptional hub for Mincle expression and inflammatory gene induction in response to TDB/TDM. C/EBPβ-deficient macrophages nearly completely lose TDB/TDM responsiveness, partly because they fail to upregulate Mincle; retroviral rescue of Mincle expression restores Egr1 but not G-CSF induction, indicating additional C/EBPβ-dependent targets. HIF1α (induced by TDB/TDM in a C/EBPβ-dependent manner) controls Nos2 expression.","method":"C/EBPβ-/- and HIF1α-deficient macrophages/DCs, retroviral Mincle rescue, microarray, Syk phosphorylation assays","journal":"Journal of immunology (Baltimore, Md. : 1950)","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with retroviral rescue and pathway dissection","pmids":["25156364"],"is_preprint":false},{"year":2016,"finding":"Microbial stimulation triggers Mincle expression through the MyD88 pathway without requiring MCL. MCL is constitutively expressed but retained intracellularly until Mincle is induced, whereupon Mincle and MCL form heterodimers that translocate to the cell surface ('two-step' model).","method":"MyD88-/- and MCL-/- macrophages, surface vs. intracellular protein localization by flow cytometry, heterodimer co-IP","journal":"Microbes and infection","confidence":"High","confidence_rationale":"Tier 2 — genetic KO epistasis with direct localization experiments","pmids":["27005451"],"is_preprint":false},{"year":2017,"finding":"β-glucosylceramide (GlcCer), a ubiquitous intracellular metabolite, is an endogenous Mincle ligand released from damaged cells. Synthetic β-GlcCer activates myeloid cells and induces inflammatory cytokines in a Mincle-dependent manner. Enhanced sterile inflammation in hematopoietic GBA1-deficient mice (in which β-GlcCer accumulates) is ameliorated in Mincle-deficient background, establishing a physiological GlcCer-Mincle axis.","method":"Lipid fractionation, mass spectrometry, NMR, synthetic ligand, Mincle-/- cells and mice, GBA1/Mincle double-KO","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 — MS/NMR ligand identification, synthetic ligand confirmation, double-KO genetic epistasis","pmids":["28373578"],"is_preprint":false},{"year":2017,"finding":"Cholesterol sulfate is selectively recognized by Mincle (Clec4e) and causes secretion of proinflammatory mediators. Mincle is strongly upregulated in response to skin damage, and its absence significantly suppresses allergic contact dermatitis magnitude (ear thickness, myeloid infiltration, cytokines).","method":"Reporter cell assay, Mincle-/- mouse model of allergic contact dermatitis, in vivo cholesterol sulfate injection","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — direct ligand identification plus in vivo KO with defined disease phenotype","pmids":["28292894"],"is_preprint":false},{"year":2017,"finding":"Glycerol monomycolate (GroMM) is a ligand for human Mincle but not mouse Mincle. Domain-swap chimeras confirmed that the ectodomain of hMincle is required. Site-directed mutagenesis identified amino acid residues at positions 174-176 and 195-196 as critical for GroMM recognition. hMincle transgenic/mMincle-KO macrophages responded to GroMM with inflammatory cytokine production, while mMincle+ macrophages did not.","method":"Domain-swap chimeras, site-directed mutagenesis, reporter cell assays, hMincle transgenic/mMincle-KO mice","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — mutagenesis with transgenic/KO validation defines molecular determinants of species-specific recognition","pmids":["24733387"],"is_preprint":false},{"year":2017,"finding":"The fine structure of fatty acids (including chain branching) plays a key role in glycolipid binding to the Mincle CRD. Glucose and mannose esterified at O-6 with a synthetic α-ramified 32-carbon fatty acid show agonist activity similar to TDM. Mincle-dependent proinflammatory cytokine production in primary human and murine cells was confirmed with these analogs.","method":"Chemical synthesis, molecular dynamics simulations, protein mutagenesis, reporter cell assays, primary cell stimulation, in vivo immunization","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 — mutagenesis with structure-guided design and in vitro/in vivo validation","pmids":["28223515"],"is_preprint":false},{"year":2016,"finding":"Binding studies reveal that the apparent affinity of mincle for hydrophobic ligands correlates with overall size rather than specific structural preference. X-ray crystallography of an extended extracellular domain of mincle (beyond the minimal CRD) and mutagenesis confirm three Ca2+-binding sites and multiple hydrophobic surface contacts for acyl chain binding.","method":"X-ray crystallography, binding assays with synthetic trehalose mimics, site-directed mutagenesis","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — crystal structure with mutagenesis and quantitative binding","pmids":["27542410"],"is_preprint":false},{"year":2018,"finding":"Lipoteichoic acid anchor monoglucosyldiacylglycerol (MGDG) produced by Group A Streptococcus is recognized by Mincle, triggering CARD9 pathway-dependent production of inflammatory cytokines, iNOS, and reactive oxygen species. Mincle-deficient mice exhibit impaired cytokine production, severe bacteremia, and rapid lethality after GAS infection. Diglucosyldiacylglycerol, another GAS ligand, interfered with MGDG-induced activation.","method":"Reporter cell assay with purified ligands, Mincle-/- mice (in vivo infection model), gene expression analysis, CARD9 pathway inhibition","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — ligand identification with in vivo KO phenotype and pathway placement","pmids":["30352847"],"is_preprint":false},{"year":2018,"finding":"CD11b acts as a critical negative regulator of Mincle signaling. Mincle activation by mycobacterial components induces formation of a Mincle-CD11b signaling complex. Activated CD11b recruits Lyn, SIRPα, and SHP1, which dephosphorylate Syk to inhibit Mincle-mediated inflammation. CD11b-deficient mice show hyperinflammation following mycobacterial infection.","method":"CD11b-/- macrophages and mice, co-immunoprecipitation, Syk dephosphorylation assay, Lyn activator MLR1023","journal":"Experimental & molecular medicine","confidence":"High","confidence_rationale":"Tier 2 — Co-IP defining complex, genetic KO phenotype, phosphatase mechanism","pmids":["29400702"],"is_preprint":false},{"year":2019,"finding":"The Mincle-Syk axis in dendritic cells senses mucosal-resident commensals in Peyer's patches, triggers IL-6 and IL-23p19 expression, and thereby regulates intestinal Th17 and ILC3 function. Mincle-deficient or DC-specific Syk-deficient mice have impaired intestinal RegIIIγ and IgA production and increased systemic microbial translocation, leading to liver inflammation and deregulated lipid metabolism.","method":"Mincle-/- mice, CD11c-specific Syk conditional KO mice, intestinal immune profiling, microbiota sensing assays","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 — two genetic KO models with defined cellular and systemic phenotypes","pmids":["30709742"],"is_preprint":false},{"year":2019,"finding":"CLEC4E (Mincle) signaling in macrophages activates MYD88, PI3K, STAT1, and RELA/NF-κB, increases lysosome biogenesis, and induces macroautophagy through MYD88. In autophagy-deficient (Atg5-KO or Becn1-knockdown) macrophages, Mtb survival is elevated. CLEC4E combined with TLR4 agonist (C4.T4) restricts Mtb growth through autophagy.","method":"Atg5-KO and Becn1-knockdown macrophages, autophagy flux assays, lysosome biogenesis markers, in vivo mouse and guinea pig infection","journal":"Autophagy","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with defined autophagy pathway placement and in vivo validation","pmids":["31462144"],"is_preprint":false},{"year":2020,"finding":"Mincle senses renal tubular cell death via β-glucosylceramide as an endogenous ligand; free cholesterol markedly enhances β-glucosylceramide agonism on Mincle. Mincle-deficient mice are protected against tissue damage and kidney atrophy after ischemia-reperfusion injury. β-glucosylceramide and free cholesterol accumulate in dead renal tubules in proximity to Mincle-expressing macrophages, where Mincle inhibits dead-cell clearance.","method":"Mincle-/- mice (IRI model), lipophilic extract fractionation, mass spectrometry identification of β-GlcCer, functional reporter assays, histological co-localization","journal":"The Journal of experimental medicine","confidence":"High","confidence_rationale":"Tier 2 — endogenous ligand identified by MS, cooperative ligand effect demonstrated, in vivo KO phenotype","pmids":["32797195"],"is_preprint":false},{"year":2020,"finding":"The Mincle/Syk/NF-κB signaling circuit is essential for maintaining pro-tumoral activities of tumor-associated macrophages (TAM). Cancer cells induce Mincle expression in bone marrow-derived macrophages, and Mincle silencing promotes M1-like phenotypes. Ultrasound microbubble-mediated tumor-specific Mincle silencing blocked Mincle/Syk/NF-κB signaling and TAM-driven cancer progression in syngeneic mouse models.","method":"Single-cell RNA-seq, Mincle siRNA knockdown, adoptive transfer into NOD/SCID mice, syngeneic lung/melanoma models, ultrasound-mediated gene transfer","journal":"Cancer immunology research","confidence":"High","confidence_rationale":"Tier 2 — genetic KD with adoptive transfer and in vivo syngeneic models, pathway mechanistically defined","pmids":["32532809"],"is_preprint":false},{"year":2020,"finding":"Mincle/Syk signaling in macrophages promotes intestinal mucosal inflammation in Crohn's disease by inducing macrophage pyroptosis and MAPK-dependent chemokine production to recruit neutrophils. Mincle-/- mice and Syk inhibitor treatment ameliorate experimental colitis by reducing macrophage pyroptosis.","method":"Mincle-/- mice in colitis model, Syk pharmacological inhibition, Mincle agonist, ex vivo BMDM pyroptosis assays","journal":"Journal of Crohn's & colitis","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with defined cellular mechanism (pyroptosis) and in vivo phenotype","pmids":["32333776"],"is_preprint":false},{"year":2021,"finding":"Peroxiredoxin 1 (Prdx1) is a novel DAMP that binds Mincle to initiate macrophage-mediated AKI. Prdx1 upregulates Mincle and the Syk system; Mincle knockdown abolishes Prdx1-induced activated Syk and downstream NF-κB signaling and M1 polarization. Prdx1-/- mice are protected from AKI, and protection is reversed by recombinant Prdx1.","method":"Prdx1-/- mice, Mincle knockdown in macrophages, co-IP (Prdx1-Mincle interaction), Syk phosphorylation assays, recombinant protein rescue","journal":"Kidney international","confidence":"High","confidence_rationale":"Tier 2 — genetic KO, co-IP, rescue experiments, and defined signaling pathway","pmids":["37164261"],"is_preprint":false},{"year":2021,"finding":"SAP130 released from damaged tubular cells drives necroinflammation via a miRNA-219c-3p/Mincle-dependent mechanism. miR-219c-3p binds the Mincle 3'-UTR to inhibit Mincle translation; lentivirus-mediated renal miR-219c-3p overexpression blunts Mincle expression, macrophage infiltration, and inflammation in UUO mice.","method":"SAP130 administration, Mincle-/- mice, miRNA 3'-UTR reporter assay, lentiviral miR-219c-3p overexpression in vivo","journal":"Cell death & disease","confidence":"High","confidence_rationale":"Tier 2 — 3'UTR reporter assay, genetic KO validation, in vivo lentiviral epistasis","pmids":["34556635"],"is_preprint":false},{"year":2022,"finding":"Mincle has a T cell-intrinsic role in TH17-mediated CNS inflammation. Dying cells release β-glucosylceramide during inflammation, which serves as a natural ligand for Mincle on TH17 cells. Mincle ligand engagement induces ASC-NLRP3 inflammasome activation leading to Caspase8-dependent IL-1β production, driving TH17 cell proliferation via an autocrine loop. Mincle genomic deletion specifically in T cells impairs TH17- but not TH1-mediated EAE.","method":"T cell-specific Mincle-/- mice, NLRP3/ASC inflammasome assays, Caspase-8 inhibition, β-GlcCer synthesis inhibition, EAE model","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 — cell-type-specific KO with mechanistic inflammasome pathway dissection","pmids":["35504893"],"is_preprint":false},{"year":2012,"finding":"TDM-induced Mincle signaling on neutrophils increases cell adherence by enhancing F-actin polymerization and CD11b/CD18 surface expression, dependent on Src, Syk, and MEK kinases. Neutrophils are recruited during early TDM-induced granuloma formation, and Mincle expression on neutrophils is required for infiltration at TDM-challenged sites.","method":"Mincle-/- mice, neutrophil depletion, kinase inhibitors (Src, Syk, MEK), F-actin polymerization assays, CD11b/CD18 flow cytometry","journal":"PLoS pathogens","confidence":"High","confidence_rationale":"Tier 2 — genetic KO with defined cellular signaling mechanism and in vivo phenotype","pmids":["22496642"],"is_preprint":false},{"year":2017,"finding":"TDM recruits Mincle during FcγR-mediated phagocytosis and modulates phagosome maturation through SHP-1 and FcγRIIB, indicating inhibitory downstream signaling of Mincle during phagosome formation. This provides a mechanism for TDM-mediated virulence.","method":"IgG-opsonized bead assays with TDM coating, phagosome maturation assays, SHP-1 and FcγRIIB genetic/pharmacological inhibition","journal":"PloS one","confidence":"High","confidence_rationale":"Tier 2 — mechanistic dissection of inhibitory signaling with defined molecular components","pmids":["28384255"],"is_preprint":false},{"year":2016,"finding":"Clec4e (Mincle) in the CNS (specifically in perivascular macrophages, not in microglia or neurons) exacerbates neuronal loss following ischemic stroke. Bone marrow chimera experiments revealed that CNS-resident rather than recruited immune cell Mincle drives poor outcomes after transient MCAO.","method":"Mincle-/- mice (MCAO, spinal cord injury, heart/gut ischemia models), bone marrow chimeras, leukocyte infiltration and infarct size analysis","journal":"Journal of cerebral blood flow and metabolism","confidence":"High","confidence_rationale":"Tier 2 — bone marrow chimera establishes cell-compartment specificity with defined in vivo phenotype","pmids":["27492949"],"is_preprint":false},{"year":2013,"finding":"Mincle and Syk are upregulated after cerebral ischemia. Piceatannol (a Syk inhibitor) reduces infarct volume, suppresses phospho-Syk, MMP9, and ICAM-1 expression, and upregulates Claudin5, indicating Mincle/Syk signaling participates in post-ischemic inflammation.","method":"Mincle/SAP130/pSyk immunohistochemistry in mouse and human brain, Syk inhibitor piceatannol in mouse MCAO model","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 3 — pharmacological inhibition with defined molecular markers, no genetic KO","pmids":["24212132"],"is_preprint":false},{"year":2021,"finding":"Clec4e (Mincle) expression is increased in vasculature, cardiac myocytes, and infiltrating leukocytes after myocardial ischemia-reperfusion injury. Loss of Clec4e signaling reduces acute cardiac injury, neutrophil infiltration, and infarct size, and improves left ventricular structural and functional remodeling at 4 weeks. CNS-resident rather than recruited cell Mincle contributes (bone marrow chimera in stroke model referenced).","method":"Clec4e-/- mice in porcine and murine IRI models, transcriptomic profiling, LV functional assessment by imaging","journal":"JACC. Basic to translational science","confidence":"High","confidence_rationale":"Tier 2 — genetic KO in multiple species with defined cardiac functional outcomes and transcriptomic mechanism","pmids":["34466750"],"is_preprint":false},{"year":2019,"finding":"Mincle-Syk axis in dendritic cells senses gut microbiota; microbiota dysbiosis reduces lung Mincle expression on DCs, impairing their ability to activate naïve CD4 T cells and increasing Mtb susceptibility. TDB (Mincle ligand) administration rescues DC function and T cell response.","method":"Antibiotic-induced dysbiosis in mice, Mincle expression on lung DCs, DC-T cell co-culture assays, TDB rescue in vivo","journal":"Frontiers in immunology","confidence":"Medium","confidence_rationale":"Tier 3 — pharmacological rescue (TDB) without full genetic KO at the gut-lung interface","pmids":["31231363"],"is_preprint":false},{"year":2017,"finding":"Mincle recognizes the glycosylated surface (S)-layer of Tannerella forsythia in a specific, Ca2+-dependent manner via recombinant Mincle-Fc fusion protein binding. Mincle knockdown in macrophages reduces both pro- and anti-inflammatory cytokine secretion in response to T. forsythia and its S-layer.","method":"Recombinant Mincle-Fc binding assay, Mincle knockdown macrophages, cytokine measurements","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 3 — direct binding assay plus KD, but single lab/method for novel pathogen recognition","pmids":["28264048"],"is_preprint":false},{"year":2016,"finding":"SAP130 and Mincle mediate cross-talk between neuronal necroptosis and microglial immunity after SAH-related injury. Albumin binds microglial Mincle receptor directly, retarding Mincle/Syk/IL-1β signaling and attenuating SAP130-induced Mincle upregulation. The anti-inflammatory effect of albumin is similar to Mincle genetic knockdown.","method":"Co-IP (albumin-Mincle binding), Mincle siRNA knockdown in BV-2 cells, in vivo SAH rat model with albumin treatment","journal":"Brain, behavior, and immunity","confidence":"Medium","confidence_rationale":"Tier 3 — direct binding by Co-IP, genetic KD, but albumin-Mincle interaction is novel and single-lab","pmids":["27845194"],"is_preprint":false},{"year":2020,"finding":"C-type lectin receptors Mcl and Mincle, expressed in CNS myeloid cells, are crucial for pathogenesis of EAE (MS model). In vivo silencing of Mcl and Mincle or SAP130 blockade reduces T cell recruitment and reactivation to pathogenic Th17/GM-CSF phenotype. SAP130-Mincle signaling in the CNS is the critical driver.","method":"In vivo Mcl/Mincle siRNA silencing, SAP130 blockade, congenic rats with lower Mcl/Mincle expression, EAE model, human MS lesion analysis","journal":"The Journal of clinical investigation","confidence":"High","confidence_rationale":"Tier 2 — in vivo silencing epistasis, receptor blockade, and human MS lesion validation across species","pmids":["31725411"],"is_preprint":false},{"year":2016,"finding":"Glucosyl-diacylglycerol (Glc-DAG) of Streptococcus pneumoniae is identified as a Mincle ligand. Glc-DAG activates Mincle reporter cells and stimulates cytokine release from alveolar macrophages of WT but not Mincle-KO mice. Mincle deficiency increases bacterial loads and decreases survival in pneumococcal pneumonia, normalized by WT hematopoietic reconstitution.","method":"Reporter cell assay with purified Glc-DAG, Mincle-KO mice, bone marrow chimera","journal":"PLoS pathogens","confidence":"High","confidence_rationale":"Tier 2 — purified ligand identified, genetic KO in vivo with bone marrow chimera","pmids":["27923071"],"is_preprint":false},{"year":2024,"finding":"TEC ferroptosis in sepsis AKI triggers SAP130 release, which promotes M1 macrophage polarization through Mincle/Syk/NF-κB signaling. M1 macrophages in turn aggravate TEC ferroptosis. Neutralizing SAP130 or inhibiting Mincle expression blunts this feed-forward loop.","method":"Ferroptosis inhibitor Fer-1 in CLP/LPS AKI models, co-culture systems, SAP130 neutralizing antibody, Mincle knockdown, M1 polarization flow cytometry","journal":"International immunopharmacology","confidence":"Medium","confidence_rationale":"Tier 3 — pharmacological and KD approaches with defined SAP130-Mincle mechanism, single lab","pmids":["38320352"],"is_preprint":false}],"current_model":"CLEC4E (Mincle) is a C-type lectin receptor expressed on activated myeloid cells (macrophages, DCs, neutrophils) and TH17 cells that signals through the ITAM-bearing adaptor FcRγ and the Syk-CARD9-Bcl10-MALT1 pathway to drive proinflammatory cytokine production, autophagy, nitric oxide synthesis, and phagosome dynamics; it recognizes a broad array of glycolipid PAMPs (trehalose dimycolate, glucosyl-diacylglycerol, mannosyl residues) and endogenous DAMPs released from dead or damaged cells (SAP130, β-glucosylceramide, cholesterol/cholesterol sulfate, Prdx1), with ligand binding occurring via a Ca2+-dependent primary sugar-binding site and an adjacent hydrophobic groove in the CRD; its surface expression is upregulated by MyD88/TLR/NF-κB and C/EBPβ transcription, stabilized through heterodimer formation with MCL, and negatively regulated at the signaling level by a CD11b-Lyn-SIRPα-SHP1 complex or by an ITAMi-SHP1 configuration induced by certain pathogens."},"narrative":{"teleology":[{"year":2008,"claim":"Identifying Mincle's signaling adaptor and first endogenous ligand established it as an innate sensor of non-homeostatic cell death: Mincle couples to FcRγ to activate macrophages, and SAP130 released from dead cells triggers neutrophil infiltration via this axis.","evidence":"Co-immunoprecipitation, Mincle-deficient macrophages, antibody blockade in vivo","pmids":["18776906"],"confidence":"High","gaps":["Structural basis of SAP130–Mincle interaction undefined","Mechanism by which SAP130 is exposed or released from dead cells not determined"]},{"year":2009,"claim":"Identification of TDM and α-mannose as microbial Mincle ligands revealed Mincle as a bona fide pattern-recognition receptor for mycobacteria and Malassezia, broadening its role from DAMP to PAMP sensing.","evidence":"Lipid fractionation, glycoconjugate microarray, site-directed mutagenesis of mannose-binding motif, Mincle-deficient mice challenged with TDM or Malassezia","pmids":["20008526","19171887"],"confidence":"High","gaps":["Relative contribution of different mycobacterial glycolipids in whole-organism context not resolved","Downstream signaling pathway not yet mapped"]},{"year":2010,"claim":"Demonstrating FcRγ dependence for TDM/TDB responses and TH17 adjuvanticity placed Mincle in the ITAM-coupled CLR family and linked it to adaptive immune polarization.","evidence":"FcRγ and Mincle genetic KO mice, recombinant Mincle-Fc binding, tuberculosis subunit vaccine model","pmids":["20164423"],"confidence":"High","gaps":["Whether Mincle–FcRγ coupling is direct or requires additional accessory proteins not resolved"]},{"year":2012,"claim":"Mincle expression on neutrophils and its role in TDM-induced cell adhesion via Src/Syk/MEK-dependent F-actin remodeling extended the receptor's functional relevance beyond macrophages.","evidence":"Mincle-KO mice, neutrophil depletion, kinase inhibitors, F-actin polymerization assays","pmids":["22496642"],"confidence":"High","gaps":["Direct Mincle ligand on neutrophil surface vs. soluble TDM encounter not distinguished"]},{"year":2013,"claim":"Crystal structures of the Mincle CRD revealed dual binding determinants—a Ca²⁺-dependent sugar-binding site and an adjacent hydrophobic groove for acyl chains—explaining how Mincle recognizes glycolipids with both sugar headgroups and lipid tails, and the Syk–CARD9–Bcl10–MALT1 signaling cascade was mapped downstream.","evidence":"X-ray crystallography (human and bovine CRD), site-directed mutagenesis, synthetic analog binding, co-immunoprecipitation of MCL–Mincle–FcRγ, CARD9/caspase-1/ASC epistasis","pmids":["24101491","23960080","23921530","23630357"],"confidence":"High","gaps":["Full-length receptor structure including transmembrane and stalk domains not determined","Structural basis of MCL heterodimerization not resolved at atomic level"]},{"year":2014,"claim":"Mincle was shown to engage pathogen-specific evasion mechanisms: Fonsecaea triggered Mdm2-dependent IRF1 degradation via Mincle–Syk–PKB, suppressing IL-12 and TH1 immunity; separately, NF-κB (not NFAT) was identified as the transcription factor binding the Mincle promoter downstream of Dectin-3/CARD9, defining a positive-feedback loop for Mincle expression.","evidence":"Genetic knockdown, signaling inhibitors, ChIP at Mincle promoter, Dectin-3-KO and CARD9-KO macrophages","pmids":["24721577","25202022"],"confidence":"High","gaps":["Generalizability of IRF1 degradation mechanism to other Mincle ligands unknown","Whether NF-κB subunits other than p65 contribute not fully explored"]},{"year":2015,"claim":"MCL was established as a chaperone that stabilizes Mincle surface expression through its stalk region; hydrophobic residues in the MCL stalk are required, and MCL deficiency reduces Mincle protein without affecting mRNA.","evidence":"Co-IP, mutagenesis of MCL stalk, MCL-KO and transgenic mice, flow cytometry","pmids":["25888641"],"confidence":"High","gaps":["Stoichiometry and oligomeric state of Mincle–MCL complex unknown","Whether MCL chaperone function extends to other CLRs not tested"]},{"year":2016,"claim":"A burst of discoveries in 2016 expanded Mincle biology in three directions: (1) identification of endogenous lipid ligands (cholesterol, cholesterol sulfate) and their role in atherosclerosis and contact dermatitis; (2) discovery of an ITAMi–SHP1 inhibitory mode exploited by Leishmania; and (3) demonstration that Mincle drives translational control of NO synthesis via p38/eIF5A hypusination and maintains M1 macrophage identity through TLR4/NF-κB-dependent transcription.","evidence":"Mincle-KO bone marrow chimeras in Ldlr-KO atherosclerosis model, cholesterol-binding reporter assays, conditional SHP1-KO in DCs, Mincle-KO macrophages with p38 inhibitors and eIF5A hypusination assays, NF-κB/p65 ChIP at Mincle promoter","pmids":["27587433","26296894","28292894","27742545","27089465","28017324"],"confidence":"High","gaps":["Structural basis of species-specific cholesterol recognition (human but not mouse) unresolved","How ITAMi vs. activating ITAM switch is determined at molecular level not defined","Relative importance of transcriptional vs. translational control in different infection contexts unclear"]},{"year":2016,"claim":"Transcriptional regulation of Mincle was further refined: C/EBPβ was shown to be a central transcription factor for Mincle expression and TDM/TDB responsiveness, while MyD88 (not MCL) was identified as required for microbial-induced Mincle upregulation; MCL is constitutively expressed but retained intracellularly until Mincle induction allows heterodimer surface translocation.","evidence":"C/EBPβ-KO macrophages with retroviral Mincle rescue, MyD88-KO and MCL-KO macrophages, surface vs. intracellular flow cytometry","pmids":["25156364","27005451"],"confidence":"High","gaps":["Whether C/EBPβ binds Mincle promoter directly or via intermediary factors not confirmed by ChIP","Intracellular retention mechanism of MCL not identified"]},{"year":2017,"claim":"β-Glucosylceramide was identified as a ubiquitous endogenous Mincle ligand released from damaged cells, establishing a lipid DAMP–Mincle axis validated by double-KO epistasis (GBA1/Mincle); species-specific ligand recognition was mapped to defined CRD residues for glycerol monomycolate, and acyl-chain branching was shown to govern glycolipid agonism.","evidence":"MS/NMR ligand identification, synthetic ligand validation, GBA1/Mincle double-KO mice, domain-swap chimeras, mutagenesis of positions 174–176 and 195–196","pmids":["28373578","24733387","28223515"],"confidence":"High","gaps":["Physiological contexts in which β-GlcCer reaches threshold concentrations in vivo not comprehensively mapped","Full set of CRD residues governing species selectivity not enumerated"]},{"year":2018,"claim":"CD11b was identified as a negative regulator of Mincle signaling: mycobacterial activation triggers a Mincle–CD11b complex that recruits Lyn, SIRPα, and SHP1 to dephosphorylate Syk, providing a built-in brake on inflammation. MGDG from Group A Streptococcus was identified as another bacterial Mincle ligand critical for host defense.","evidence":"CD11b-KO macrophages and mice, co-IP of Mincle–CD11b–Lyn–SIRPα–SHP1, Mincle-KO mice infected with GAS","pmids":["29400702","30352847"],"confidence":"High","gaps":["Whether CD11b inhibitory complex forms with all Mincle ligands or selectively with mycobacterial glycolipids not tested","Relative hierarchy of SHP1-mediated inhibition (ITAMi vs. CD11b axis) not established"]},{"year":2019,"claim":"Mincle–Syk signaling in dendritic cells was found to sense commensal microbiota in Peyer's patches, driving IL-6/IL-23-dependent intestinal TH17/ILC3 responses, RegIIIγ, and IgA—connecting Mincle to mucosal homeostasis beyond inflammation. Mincle also activated autophagy through MYD88 for intracellular Mtb restriction.","evidence":"Mincle-KO and DC-specific Syk conditional KO mice, intestinal immune profiling; Atg5-KO and Becn1-KD macrophages with autophagy flux assays","pmids":["30709742","31462144"],"confidence":"High","gaps":["Specific commensal-derived Mincle ligands in the gut not identified","Whether Mincle-induced autophagy is selective (xenophagy) or bulk not distinguished"]},{"year":2020,"claim":"β-Glucosylceramide was confirmed as a Mincle ligand in renal ischemia-reperfusion injury, with free cholesterol acting as a co-agonist; Mincle was also linked to macrophage pyroptosis driving intestinal inflammation and to tumor-associated macrophage reprogramming via Syk/NF-κB in cancer.","evidence":"Mincle-KO mice in IRI and colitis models, MS lipid identification, Syk inhibitor in colitis, scRNA-seq and Mincle siRNA in syngeneic tumor models","pmids":["32797195","32333776","32532809"],"confidence":"High","gaps":["Structural basis of cholesterol–β-GlcCer cooperativity at the CRD not resolved","Whether Mincle drives pyroptosis through canonical or non-canonical inflammasome pathways not fully distinguished"]},{"year":2021,"claim":"Peroxiredoxin 1 was identified as an additional protein DAMP ligand for Mincle in AKI, and SAP130-induced Mincle expression was shown to be post-transcriptionally repressed by miR-219c-3p binding the Mincle 3′-UTR, adding a miRNA-level regulatory layer.","evidence":"Prdx1-KO mice, co-IP of Prdx1–Mincle, recombinant rescue; miRNA 3′-UTR reporter assay, lentiviral miR-219c-3p overexpression in UUO mice","pmids":["37164261","34556635"],"confidence":"High","gaps":["Binding site on Mincle CRD for protein DAMPs (Prdx1, SAP130) not structurally mapped","Broader miRNA regulatory landscape of Mincle unexplored"]},{"year":2022,"claim":"A T cell-intrinsic role for Mincle was established: β-GlcCer released during CNS inflammation activates Mincle on TH17 cells, triggering ASC–NLRP3 inflammasome assembly and Caspase-8-dependent IL-1β in an autocrine loop that sustains TH17 proliferation and EAE pathogenesis.","evidence":"T cell-specific Mincle conditional KO, NLRP3/ASC inflammasome assays, Caspase-8 inhibition, EAE model","pmids":["35504893"],"confidence":"High","gaps":["Whether other T helper subsets express functional Mincle not systematically tested","Whether TH17 Mincle engagement occurs in human autoimmune disease not demonstrated"]},{"year":null,"claim":"Key unresolved questions include the structural basis by which Mincle discriminates protein DAMPs (SAP130, Prdx1) from glycolipid ligands, the molecular determinants controlling the switch between activating ITAM and inhibitory ITAMi signaling modes, and whether therapeutic Mincle blockade can selectively dampen pathological inflammation without compromising antimicrobial defense.","evidence":"","pmids":[],"confidence":"Low","gaps":["No co-crystal structure of Mincle with any protein DAMP","Molecular switch between ITAM and ITAMi configuration structurally undefined","No clinical-stage Mincle-targeted therapeutic reported"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0060089","term_label":"molecular transducer activity","supporting_discovery_ids":[0,1,2,3]},{"term_id":"GO:0008289","term_label":"lipid binding","supporting_discovery_ids":[4,5,12,21,22]},{"term_id":"GO:0140299","term_label":"molecular sensor activity","supporting_discovery_ids":[0,17,21,30]}],"localization":[{"term_id":"GO:0005886","term_label":"plasma membrane","supporting_discovery_ids":[0,6,11,20]}],"pathway":[{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[0,1,3,7,8,14,26,28]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[6,7,8,13,15,27]},{"term_id":"R-HSA-9612973","term_label":"Autophagy","supporting_discovery_ids":[29]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[32,35]}],"complexes":["Mincle–MCL heterodimer","Mincle–FcRγ signaling complex","CD11b–Lyn–SIRPα–SHP1 inhibitory complex"],"partners":["FCER1G","CLEC4D","SYK","CARD9","ITGAM","LYN","SIRPA","PTPN6"],"other_free_text":[]},"mechanistic_narrative":"CLEC4E (Mincle) is a myeloid- and TH17-cell-expressed C-type lectin receptor that functions as a pattern-recognition receptor for microbial glycolipids and endogenous damage-associated molecular patterns, coupling innate danger sensing to proinflammatory signaling and adaptive immune polarization. Mincle recognizes diverse ligands—including mycobacterial trehalose dimycolate (TDM), bacterial glucosyl-diacylglycerols, fungal α-mannose, and host-derived β-glucosylceramide, cholesterol, cholesterol sulfate, SAP130, and peroxiredoxin 1—through a Ca²⁺-dependent primary sugar-binding site and an adjacent hydrophobic groove in its C-type lectin domain that accommodates acyl chains [PMID:24101491, PMID:23960080, PMID:28373578, PMID:26296894, PMID:18776906, PMID:37164261]. Upon ligand engagement, Mincle associates with the ITAM-bearing adaptor FcRγ and signals through Syk–CARD9–Bcl10–MALT1 to activate NF-κB, driving proinflammatory cytokine and nitric oxide production, autophagy, macrophage pyroptosis, and TH17 differentiation; surface expression is positively regulated by MyD88/TLR/NF-κB and C/EBPβ transcription and stabilized by heterodimerization with MCL via its stalk region [PMID:18776906, PMID:23630357, PMID:25156364, PMID:25888641, PMID:27005451, PMID:35504893]. Mincle signaling is negatively regulated by a CD11b–Lyn–SIRPα–SHP1 complex that dephosphorylates Syk and by an inhibitory ITAM (ITAMi) configuration induced by pathogens such as Leishmania, and dysregulated Mincle activity contributes to atherosclerosis, ischemia-reperfusion injury, neuroinflammation, and tumor immune evasion [PMID:29400702, PMID:27742545, PMID:27587433, PMID:27049944, PMID:34466750]."},"prefetch_data":{"uniprot":{"accession":"Q9ULY5","full_name":"C-type lectin domain family 4 member E","aliases":["C-type lectin superfamily member 9","Macrophage-inducible C-type lectin","MINCLE"],"length_aa":219,"mass_kda":25.1,"function":"Calcium-dependent lectin that acts as a pattern recognition receptor (PRR) of the innate immune system: recognizes damage-associated molecular patterns (DAMPs) of abnormal self and pathogen-associated molecular patterns (PAMPs) of bacteria and fungi (PubMed:18509109, PubMed:23602766). The PAMPs notably include mycobacterial trehalose 6,6'-dimycolate (TDM), a cell wall glycolipid with potent adjuvant immunomodulatory functions (PubMed:23602766, PubMed:24101491). Interacts with signaling adapter Fc receptor gamma chain/FCER1G to form a functional complex in myeloid cells (By similarity). Binding of mycobacterial trehalose 6,6'-dimycolate (TDM) to this receptor complex leads to phosphorylation of the immunoreceptor tyrosine-based activation motif (ITAM) of FCER1G, triggering activation of SYK, CARD9 and NF-kappa-B, consequently driving maturation of antigen-presenting cells and shaping antigen-specific priming of T-cells toward effector T-helper 1 and T-helper 17 cell subtypes (By similarity). Also recognizes alpha-mannose residues on pathogenic fungi of the genus Malassezia and mediates macrophage activation (By similarity). Through recognition of DAMPs released upon nonhomeostatic cell death, enables immune sensing of damaged self and promotes inflammatory cell infiltration into the damaged tissue (By similarity)","subcellular_location":"Cell membrane; Cell projection, phagocytic cup","url":"https://www.uniprot.org/uniprotkb/Q9ULY5/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/CLEC4E","classification":"Not Classified","n_dependent_lines":0,"n_total_lines":1208,"dependency_fraction":0.0},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/CLEC4E","total_profiled":1310},"omim":[{"mim_id":"613579","title":"C-TYPE LECTIN DOMAIN FAMILY 6, MEMBER A; CLEC6A","url":"https://www.omim.org/entry/613579"},{"mim_id":"609964","title":"C-TYPE LECTIN DOMAIN FAMILY 4, MEMBER D; CLEC4D","url":"https://www.omim.org/entry/609964"},{"mim_id":"609962","title":"C-TYPE LECTIN DOMAIN FAMILY 4, MEMBER E; CLEC4E","url":"https://www.omim.org/entry/609962"},{"mim_id":"605592","title":"SPLICING FACTOR 3B, SUBUNIT 3; SF3B3","url":"https://www.omim.org/entry/605592"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"","locations":[],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in many","driving_tissues":[{"tissue":"bone marrow","ntpm":71.5},{"tissue":"lymphoid tissue","ntpm":51.1}],"url":"https://www.proteinatlas.org/search/CLEC4E"},"hgnc":{"alias_symbol":["MINCLE"],"prev_symbol":["CLECSF9"]},"alphafold":{"accession":"Q9ULY5","domains":[{"cath_id":"3.10.100.10","chopping":"94-205","consensus_level":"high","plddt":98.2798,"start":94,"end":205}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9ULY5","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9ULY5-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9ULY5-F1-predicted_aligned_error_v6.png","plddt_mean":85.19},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=CLEC4E","jax_strain_url":"https://www.jax.org/strain/search?query=CLEC4E"},"sequence":{"accession":"Q9ULY5","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9ULY5.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9ULY5/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9ULY5"}},"corpus_meta":[{"pmid":"20008526","id":"PMC_20008526","title":"Direct recognition of the mycobacterial glycolipid, trehalose dimycolate, by C-type lectin Mincle.","date":"2009","source":"The Journal of experimental medicine","url":"https://pubmed.ncbi.nlm.nih.gov/20008526","citation_count":611,"is_preprint":false},{"pmid":"18776906","id":"PMC_18776906","title":"Mincle is an ITAM-coupled activating receptor that senses damaged cells.","date":"2008","source":"Nature immunology","url":"https://pubmed.ncbi.nlm.nih.gov/18776906","citation_count":564,"is_preprint":false},{"pmid":"27049944","id":"PMC_27049944","title":"The necrosome promotes pancreatic oncogenesis via CXCL1 and Mincle-induced immune suppression.","date":"2016","source":"Nature","url":"https://pubmed.ncbi.nlm.nih.gov/27049944","citation_count":518,"is_preprint":false},{"pmid":"20164423","id":"PMC_20164423","title":"Cutting edge: Mincle is essential for recognition and adjuvanticity of the mycobacterial cord factor and its synthetic analog trehalose-dibehenate.","date":"2010","source":"Journal of immunology (Baltimore, Md. : 1950)","url":"https://pubmed.ncbi.nlm.nih.gov/20164423","citation_count":385,"is_preprint":false},{"pmid":"19171887","id":"PMC_19171887","title":"C-type lectin Mincle is an activating receptor for pathogenic fungus, Malassezia.","date":"2009","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/19171887","citation_count":342,"is_preprint":false},{"pmid":"30709742","id":"PMC_30709742","title":"Microbiota Sensing by Mincle-Syk Axis in Dendritic Cells Regulates Interleukin-17 and -22 Production and Promotes Intestinal Barrier Integrity.","date":"2019","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/30709742","citation_count":181,"is_preprint":false},{"pmid":"28017324","id":"PMC_28017324","title":"The pattern recognition receptor, Mincle, is essential for maintaining the M1 macrophage phenotype in acute renal inflammation.","date":"2016","source":"Kidney 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chemokines. SAP130, a component of small nuclear ribonucleoprotein released from dead cells, was identified as a Mincle ligand, and Mincle-mediated sensing of non-homeostatic cell death drives neutrophil infiltration into damaged tissue.\",\n      \"method\": \"Co-immunoprecipitation, reporter cell assays, Mincle-specific antibody blockade in vivo, Mincle-deficient macrophages\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal co-IP, functional KO, in vivo blockade, replicated across subsequent papers\",\n      \"pmids\": [\"18776906\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Mincle is an essential receptor for the mycobacterial glycolipid trehalose-6,6'-dimycolate (TDM; cord factor). Delipidation of heat-killed mycobacteria abolished Mincle-expressing cell activation; lipid extract analysis identified TDM as the Mincle ligand. Mincle-deficient macrophages failed to produce inflammatory cytokines and nitric oxide in response to TDM, and Mincle-deficient mice did not form TDM-induced lung granulomas.\",\n      \"method\": \"Lipid fractionation, reporter cell assay, Mincle-deficient macrophages and mice, in vivo TDM challenge\",\n      \"journal\": \"The Journal of experimental medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with defined phenotype, ligand identification by biochemical fractionation, replicated across multiple labs\",\n      \"pmids\": [\"20008526\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Mincle specifically recognizes Malassezia species among 50 fungal species tested. Mutation of the putative mannose-binding motif within the C-type lectin domain abolished Malassezia recognition. Glycoconjugate microarray showed Mincle selectively binds α-mannose but not mannan. Mincle-deficient mice had impaired cytokine/chemokine production and in vivo inflammatory responses to Malassezia.\",\n      \"method\": \"Reporter cell screening, site-directed mutagenesis, glycoconjugate microarray, Mincle-deficient mouse experiments\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — mutagenesis, glycan array, and genetic KO in one study\",\n      \"pmids\": [\"19171887\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"The FcRγ adaptor protein is essential for Mincle-mediated macrophage activation and Th17 adjuvanticity in response to TDM and its synthetic analog TDB. Recombinant Mincle-Fc fusion protein specifically binds these glycolipids. Genetic ablation of Mincle abolished TDM/TDB-induced macrophage activation and T cell immune responses to a tuberculosis subunit vaccine.\",\n      \"method\": \"Recombinant Mincle-Fc binding assay, genetic knockout of Mincle and FcRγ, in vivo vaccination experiments\",\n      \"journal\": \"Journal of immunology (Baltimore, Md. : 1950)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct binding assay plus genetic KO with defined immunological phenotype, replicated finding\",\n      \"pmids\": [\"20164423\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Crystal structures of Mincle (and MCL) reveal Ca2+-dependent sugar binding and a unique shallow hydrophobic region adjacent to the sugar-binding site that accommodates the fatty acid moieties of glycolipids. Functional mutagenesis of residues in these regions confirmed the deduced binding mode for glycolipid recognition.\",\n      \"method\": \"X-ray crystallography of Mincle CRD, site-directed mutagenesis, functional reporter assays with glycolipid ligands\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — crystal structure with mutagenesis validation\",\n      \"pmids\": [\"24101491\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Crystallographic structural analysis and site-directed mutagenesis of bovine mincle CRD defined an extended binding site encompassing both the trehalose headgroup and a portion of attached acyl chains. One glucose residue of trehalose is liganded to Ca2+ in a manner common to C-type CRDs; the second glucose is accommodated in a novel secondary binding site providing 36-fold higher affinity for trehalose vs. glucose. An adjacent hydrophobic groove docks one acyl chain, allowing small molecule analogs to bind with 52-fold higher affinity than trehalose alone.\",\n      \"method\": \"X-ray crystallography, site-directed mutagenesis, binding studies with glycolipid mimics\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — crystal structure, mutagenesis, and quantitative binding assays in a single study\",\n      \"pmids\": [\"23960080\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Upon receptor activation, Mincle signals via the Syk-CARD9-Bcl10-MALT1 pathway by recruiting the ITAM-bearing FcεRI-γ. MCL co-precipitates with FcεRI-γ via Mincle; Mincle and MCL form heteromers on the cell surface, and MCL/FcεRI-γ association increases Mincle expression and enhances phagocytosis of antibody-coated beads.\",\n      \"method\": \"Flow cytometry, co-immunoprecipitation, biochemical analysis, phagocytosis assay\",\n      \"journal\": \"European journal of immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP and functional phagocytosis assay, consistent with other studies on FcRγ coupling\",\n      \"pmids\": [\"23921530\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Mincle activation by TDM/TDB induces recognition through the CARD9 pathway, and recognition of TDM by Mincle partially explains the CARD9 requirement for pro-IL-1β expression. Peptidoglycan plus cord factor in mineral oil synergized to recapitulate Th17-promoting activity of CFA, with responses diminished in caspase-1- and CARD9-deficient mice, placing Mincle upstream of CARD9-dependent IL-1β transcription.\",\n      \"method\": \"Genetic epistasis (CARD9, caspase-1, ASC, NLRP3 KO mice), biochemical fractionation, adoptive transfer\",\n      \"journal\": \"Journal of immunology (Baltimore, Md. : 1950)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — epistasis with multiple KO lines plus biochemical fractionation\",\n      \"pmids\": [\"23630357\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"Fonsecaea monophora engages CLR mincle to induce an E3 ubiquitin ligase Mdm2-dependent degradation pathway via Syk-CARD9-mediated PKB signaling, leading to loss of nuclear IRF1 activity and blocking IL12A transcription, thereby suppressing Th1 responses and promoting immune evasion.\",\n      \"method\": \"Genetic knockdown, reporter assays, signaling pathway inhibitors, chromatin/nucleosome remodeling assays\",\n      \"journal\": \"Cell host & microbe\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods defining a novel Mincle signaling mechanism\",\n      \"pmids\": [\"24721577\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"TDM-induced Mincle expression is dependent on Dectin-3-mediated NF-κB activation through the CARD9-BCL10-MALT1 complex. NF-κB but not NFAT binds the Mincle promoter. Dectin-3-deficient macrophages fail to upregulate Mincle in response to TDM.\",\n      \"method\": \"Genetic KO (Dectin-3, CARD9), NF-κB/NFAT inhibitors, chromatin immunoprecipitation at Mincle promoter\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO combined with promoter ChIP and signaling inhibitor analysis\",\n      \"pmids\": [\"25202022\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"Human mincle binds acylated trehalose derivatives via a mechanism similar to bovine mincle: one glucose of trehalose is ligated to the principal Ca2+-binding site; the second glucose contacts a secondary site; and acyl chains at 6-OH groups enhance affinity in a chain-length and hydrophobic-groove-dependent manner. Mutagenesis and synthetic analog binding studies showed the available crystal structure of human mincle CRD is not in the fully active conformation.\",\n      \"method\": \"Site-directed mutagenesis of human mincle, binding studies with synthetic TDM analogs\",\n      \"journal\": \"Glycobiology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — structure-guided mutagenesis with quantitative binding assays\",\n      \"pmids\": [\"25028392\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"MCL interacts with Mincle through its stalk region to promote Mincle surface expression. MCL-deficient BMDCs show reduced Mincle protein (not mRNA) after stimulation. MCL transgenic mice show enhanced Mincle surface expression. A hydrophobic repeat in MCL stalk is required; substitution of four hydrophobic residues (MCL4S) abolishes the function, and MCL4S fails to restore TDM responses in MCL-deficient cells.\",\n      \"method\": \"Co-immunoprecipitation, domain swap/mutagenesis, transgenic and KO mice, flow cytometry for surface expression\",\n      \"journal\": \"Journal of immunology (Baltimore, Md. : 1950)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — protein-protein interaction by Co-IP, mutagenesis, and genetic complementation\",\n      \"pmids\": [\"25888641\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Human Mincle binds cholesterol crystals (but not murine Mincle) and triggers innate immune responses including pro-inflammatory cytokine production. Purified cholesterol in plate-coated and crystallized forms activates hMincle-expressing reporter cells; anti-human Mincle antibody inhibits this response in human dendritic cells.\",\n      \"method\": \"Reporter cell assays, MS lipid identification, antibody blockade, transfection of murine macrophages with hMincle\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct ligand identification by MS with functional reporter and antibody blockade, species specificity confirmed\",\n      \"pmids\": [\"26296894\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Mincle signaling in macrophages inhibits cholesterol efflux and induces a Syk-mediated endoplasmic reticulum stress response (dependent on Chop and Ire1a), leading to proinflammatory mediator and growth factor induction. Clec4e-/- bone marrow transplantation into Ldlr-/- mice reduces lipid accumulation, ER stress, macrophage inflammation and proliferation, and significantly limits atherosclerosis.\",\n      \"method\": \"Bone marrow chimera, Clec4e-/- genetic KO, in vitro macrophage assays, Syk inhibition, Chop/Ire1a/Atf3 KO\",\n      \"journal\": \"Circulation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple genetic KOs with orthogonal mechanistic readouts, in vivo disease model\",\n      \"pmids\": [\"27587433\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Leishmania triggers a Mincle-dependent inhibitory ITAM (ITAMi) configuration characterized by SHP1 coupling to the FcRγ chain, impairing dendritic cell activation and adaptive immunity. Mincle-deficient mice had milder pathology and lower parasite burdens. Selective loss of SHP1 in CD11c+ cells phenocopied enhanced adaptive immunity to Leishmania.\",\n      \"method\": \"Mincle-deficient mice, conditional SHP1 KO in CD11c+ cells, signaling analysis (SHP1-FcRγ coupling), parasite burden quantification\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis with two KO lines, defined mechanistic switch (ITAMi vs. ITAM)\",\n      \"pmids\": [\"27742545\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Mincle is essential for maintaining the M1 macrophage phenotype through Syk signaling. Mincle expression in macrophages is regulated by TLR4/NF-κB signaling; NF-κB/p65 binds the Mincle promoter in LPS-primed macrophages. Mincle knockdown or Syk inhibition suppresses LPS-induced IL-1β, MCP-1, and iNOS expression. Adoptive transfer of Mincle+ M1 macrophages promotes cisplatin-induced renal inflammation, prevented by Mincle knockdown.\",\n      \"method\": \"Mincle knockdown, Syk inhibitor, NF-κB/p65 ChIP at Mincle promoter, adoptive transfer, in vivo AKI model\",\n      \"journal\": \"Kidney international\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — ChIP, genetic KD, adoptive transfer with defined in vivo phenotype\",\n      \"pmids\": [\"28017324\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Mincle is the key switch for macrophage transition from cytokine expression to high nitric oxide production during mycobacterial infection. Beyond stimulating TLR-mediated transcription, Mincle enhances translation of key genes for nitric oxide synthesis through p38 and eIF5A hypusination, leading to granuloma resolution. Thus Mincle has dual transcriptional and translational regulatory functions.\",\n      \"method\": \"Mincle-deficient macrophages, p38 inhibitors, eIF5A hypusination assays, translation reporter assays, murine granuloma model\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with orthogonal mechanistic dissection of transcriptional vs. translational control\",\n      \"pmids\": [\"27089465\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Necroptosis-induced cytoplasmic SAP130 (a subunit of the histone deacetylase complex) in pancreatic ductal adenocarcinoma is sensed by Mincle on tumor-infiltrating myeloid cells, promoting oncogenesis and macrophage-induced immune suppression. Mincle deletion protected against PDA and reprogrammed the tumor microenvironment by releasing T cells into anti-tumor activity.\",\n      \"method\": \"Mincle-/- and RIP3-/- mouse models of PDA, SAP130 cytoplasmic expression analysis, adoptive transfer, T cell depletion experiments\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis with multiple KO lines, defined cellular mechanism in vivo\",\n      \"pmids\": [\"27049944\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"IRAKM Myddosome (formed at low LPS concentrations reflecting pathophysiological levels) mediates up-regulation of Mincle in macrophages. Mincle then senses SAP130 (released by ethanol-damaged hepatocytes), and SAP130 plus LPS synergistically activate inflammatory responses including inflammasome activation, contributing to alcoholic liver disease.\",\n      \"method\": \"IRAKM-/- and Mincle-/- mice, bone marrow-derived macrophage ex vivo assays, ethanol feeding model, inflammasome activation assays\",\n      \"journal\": \"Hepatology (Baltimore, Md.)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — two genetic KO models with epistasis, defined IRAKM-Mincle axis\",\n      \"pmids\": [\"27628766\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"C/EBPβ is a central transcriptional hub for Mincle expression and inflammatory gene induction in response to TDB/TDM. C/EBPβ-deficient macrophages nearly completely lose TDB/TDM responsiveness, partly because they fail to upregulate Mincle; retroviral rescue of Mincle expression restores Egr1 but not G-CSF induction, indicating additional C/EBPβ-dependent targets. HIF1α (induced by TDB/TDM in a C/EBPβ-dependent manner) controls Nos2 expression.\",\n      \"method\": \"C/EBPβ-/- and HIF1α-deficient macrophages/DCs, retroviral Mincle rescue, microarray, Syk phosphorylation assays\",\n      \"journal\": \"Journal of immunology (Baltimore, Md. : 1950)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with retroviral rescue and pathway dissection\",\n      \"pmids\": [\"25156364\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Microbial stimulation triggers Mincle expression through the MyD88 pathway without requiring MCL. MCL is constitutively expressed but retained intracellularly until Mincle is induced, whereupon Mincle and MCL form heterodimers that translocate to the cell surface ('two-step' model).\",\n      \"method\": \"MyD88-/- and MCL-/- macrophages, surface vs. intracellular protein localization by flow cytometry, heterodimer co-IP\",\n      \"journal\": \"Microbes and infection\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO epistasis with direct localization experiments\",\n      \"pmids\": [\"27005451\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"β-glucosylceramide (GlcCer), a ubiquitous intracellular metabolite, is an endogenous Mincle ligand released from damaged cells. Synthetic β-GlcCer activates myeloid cells and induces inflammatory cytokines in a Mincle-dependent manner. Enhanced sterile inflammation in hematopoietic GBA1-deficient mice (in which β-GlcCer accumulates) is ameliorated in Mincle-deficient background, establishing a physiological GlcCer-Mincle axis.\",\n      \"method\": \"Lipid fractionation, mass spectrometry, NMR, synthetic ligand, Mincle-/- cells and mice, GBA1/Mincle double-KO\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — MS/NMR ligand identification, synthetic ligand confirmation, double-KO genetic epistasis\",\n      \"pmids\": [\"28373578\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Cholesterol sulfate is selectively recognized by Mincle (Clec4e) and causes secretion of proinflammatory mediators. Mincle is strongly upregulated in response to skin damage, and its absence significantly suppresses allergic contact dermatitis magnitude (ear thickness, myeloid infiltration, cytokines).\",\n      \"method\": \"Reporter cell assay, Mincle-/- mouse model of allergic contact dermatitis, in vivo cholesterol sulfate injection\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct ligand identification plus in vivo KO with defined disease phenotype\",\n      \"pmids\": [\"28292894\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Glycerol monomycolate (GroMM) is a ligand for human Mincle but not mouse Mincle. Domain-swap chimeras confirmed that the ectodomain of hMincle is required. Site-directed mutagenesis identified amino acid residues at positions 174-176 and 195-196 as critical for GroMM recognition. hMincle transgenic/mMincle-KO macrophages responded to GroMM with inflammatory cytokine production, while mMincle+ macrophages did not.\",\n      \"method\": \"Domain-swap chimeras, site-directed mutagenesis, reporter cell assays, hMincle transgenic/mMincle-KO mice\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — mutagenesis with transgenic/KO validation defines molecular determinants of species-specific recognition\",\n      \"pmids\": [\"24733387\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"The fine structure of fatty acids (including chain branching) plays a key role in glycolipid binding to the Mincle CRD. Glucose and mannose esterified at O-6 with a synthetic α-ramified 32-carbon fatty acid show agonist activity similar to TDM. Mincle-dependent proinflammatory cytokine production in primary human and murine cells was confirmed with these analogs.\",\n      \"method\": \"Chemical synthesis, molecular dynamics simulations, protein mutagenesis, reporter cell assays, primary cell stimulation, in vivo immunization\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — mutagenesis with structure-guided design and in vitro/in vivo validation\",\n      \"pmids\": [\"28223515\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Binding studies reveal that the apparent affinity of mincle for hydrophobic ligands correlates with overall size rather than specific structural preference. X-ray crystallography of an extended extracellular domain of mincle (beyond the minimal CRD) and mutagenesis confirm three Ca2+-binding sites and multiple hydrophobic surface contacts for acyl chain binding.\",\n      \"method\": \"X-ray crystallography, binding assays with synthetic trehalose mimics, site-directed mutagenesis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — crystal structure with mutagenesis and quantitative binding\",\n      \"pmids\": [\"27542410\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Lipoteichoic acid anchor monoglucosyldiacylglycerol (MGDG) produced by Group A Streptococcus is recognized by Mincle, triggering CARD9 pathway-dependent production of inflammatory cytokines, iNOS, and reactive oxygen species. Mincle-deficient mice exhibit impaired cytokine production, severe bacteremia, and rapid lethality after GAS infection. Diglucosyldiacylglycerol, another GAS ligand, interfered with MGDG-induced activation.\",\n      \"method\": \"Reporter cell assay with purified ligands, Mincle-/- mice (in vivo infection model), gene expression analysis, CARD9 pathway inhibition\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — ligand identification with in vivo KO phenotype and pathway placement\",\n      \"pmids\": [\"30352847\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"CD11b acts as a critical negative regulator of Mincle signaling. Mincle activation by mycobacterial components induces formation of a Mincle-CD11b signaling complex. Activated CD11b recruits Lyn, SIRPα, and SHP1, which dephosphorylate Syk to inhibit Mincle-mediated inflammation. CD11b-deficient mice show hyperinflammation following mycobacterial infection.\",\n      \"method\": \"CD11b-/- macrophages and mice, co-immunoprecipitation, Syk dephosphorylation assay, Lyn activator MLR1023\",\n      \"journal\": \"Experimental & molecular medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — Co-IP defining complex, genetic KO phenotype, phosphatase mechanism\",\n      \"pmids\": [\"29400702\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"The Mincle-Syk axis in dendritic cells senses mucosal-resident commensals in Peyer's patches, triggers IL-6 and IL-23p19 expression, and thereby regulates intestinal Th17 and ILC3 function. Mincle-deficient or DC-specific Syk-deficient mice have impaired intestinal RegIIIγ and IgA production and increased systemic microbial translocation, leading to liver inflammation and deregulated lipid metabolism.\",\n      \"method\": \"Mincle-/- mice, CD11c-specific Syk conditional KO mice, intestinal immune profiling, microbiota sensing assays\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — two genetic KO models with defined cellular and systemic phenotypes\",\n      \"pmids\": [\"30709742\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"CLEC4E (Mincle) signaling in macrophages activates MYD88, PI3K, STAT1, and RELA/NF-κB, increases lysosome biogenesis, and induces macroautophagy through MYD88. In autophagy-deficient (Atg5-KO or Becn1-knockdown) macrophages, Mtb survival is elevated. CLEC4E combined with TLR4 agonist (C4.T4) restricts Mtb growth through autophagy.\",\n      \"method\": \"Atg5-KO and Becn1-knockdown macrophages, autophagy flux assays, lysosome biogenesis markers, in vivo mouse and guinea pig infection\",\n      \"journal\": \"Autophagy\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with defined autophagy pathway placement and in vivo validation\",\n      \"pmids\": [\"31462144\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Mincle senses renal tubular cell death via β-glucosylceramide as an endogenous ligand; free cholesterol markedly enhances β-glucosylceramide agonism on Mincle. Mincle-deficient mice are protected against tissue damage and kidney atrophy after ischemia-reperfusion injury. β-glucosylceramide and free cholesterol accumulate in dead renal tubules in proximity to Mincle-expressing macrophages, where Mincle inhibits dead-cell clearance.\",\n      \"method\": \"Mincle-/- mice (IRI model), lipophilic extract fractionation, mass spectrometry identification of β-GlcCer, functional reporter assays, histological co-localization\",\n      \"journal\": \"The Journal of experimental medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — endogenous ligand identified by MS, cooperative ligand effect demonstrated, in vivo KO phenotype\",\n      \"pmids\": [\"32797195\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"The Mincle/Syk/NF-κB signaling circuit is essential for maintaining pro-tumoral activities of tumor-associated macrophages (TAM). Cancer cells induce Mincle expression in bone marrow-derived macrophages, and Mincle silencing promotes M1-like phenotypes. Ultrasound microbubble-mediated tumor-specific Mincle silencing blocked Mincle/Syk/NF-κB signaling and TAM-driven cancer progression in syngeneic mouse models.\",\n      \"method\": \"Single-cell RNA-seq, Mincle siRNA knockdown, adoptive transfer into NOD/SCID mice, syngeneic lung/melanoma models, ultrasound-mediated gene transfer\",\n      \"journal\": \"Cancer immunology research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KD with adoptive transfer and in vivo syngeneic models, pathway mechanistically defined\",\n      \"pmids\": [\"32532809\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Mincle/Syk signaling in macrophages promotes intestinal mucosal inflammation in Crohn's disease by inducing macrophage pyroptosis and MAPK-dependent chemokine production to recruit neutrophils. Mincle-/- mice and Syk inhibitor treatment ameliorate experimental colitis by reducing macrophage pyroptosis.\",\n      \"method\": \"Mincle-/- mice in colitis model, Syk pharmacological inhibition, Mincle agonist, ex vivo BMDM pyroptosis assays\",\n      \"journal\": \"Journal of Crohn's & colitis\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with defined cellular mechanism (pyroptosis) and in vivo phenotype\",\n      \"pmids\": [\"32333776\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Peroxiredoxin 1 (Prdx1) is a novel DAMP that binds Mincle to initiate macrophage-mediated AKI. Prdx1 upregulates Mincle and the Syk system; Mincle knockdown abolishes Prdx1-induced activated Syk and downstream NF-κB signaling and M1 polarization. Prdx1-/- mice are protected from AKI, and protection is reversed by recombinant Prdx1.\",\n      \"method\": \"Prdx1-/- mice, Mincle knockdown in macrophages, co-IP (Prdx1-Mincle interaction), Syk phosphorylation assays, recombinant protein rescue\",\n      \"journal\": \"Kidney international\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO, co-IP, rescue experiments, and defined signaling pathway\",\n      \"pmids\": [\"37164261\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"SAP130 released from damaged tubular cells drives necroinflammation via a miRNA-219c-3p/Mincle-dependent mechanism. miR-219c-3p binds the Mincle 3'-UTR to inhibit Mincle translation; lentivirus-mediated renal miR-219c-3p overexpression blunts Mincle expression, macrophage infiltration, and inflammation in UUO mice.\",\n      \"method\": \"SAP130 administration, Mincle-/- mice, miRNA 3'-UTR reporter assay, lentiviral miR-219c-3p overexpression in vivo\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — 3'UTR reporter assay, genetic KO validation, in vivo lentiviral epistasis\",\n      \"pmids\": [\"34556635\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Mincle has a T cell-intrinsic role in TH17-mediated CNS inflammation. Dying cells release β-glucosylceramide during inflammation, which serves as a natural ligand for Mincle on TH17 cells. Mincle ligand engagement induces ASC-NLRP3 inflammasome activation leading to Caspase8-dependent IL-1β production, driving TH17 cell proliferation via an autocrine loop. Mincle genomic deletion specifically in T cells impairs TH17- but not TH1-mediated EAE.\",\n      \"method\": \"T cell-specific Mincle-/- mice, NLRP3/ASC inflammasome assays, Caspase-8 inhibition, β-GlcCer synthesis inhibition, EAE model\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO with mechanistic inflammasome pathway dissection\",\n      \"pmids\": [\"35504893\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"TDM-induced Mincle signaling on neutrophils increases cell adherence by enhancing F-actin polymerization and CD11b/CD18 surface expression, dependent on Src, Syk, and MEK kinases. Neutrophils are recruited during early TDM-induced granuloma formation, and Mincle expression on neutrophils is required for infiltration at TDM-challenged sites.\",\n      \"method\": \"Mincle-/- mice, neutrophil depletion, kinase inhibitors (Src, Syk, MEK), F-actin polymerization assays, CD11b/CD18 flow cytometry\",\n      \"journal\": \"PLoS pathogens\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with defined cellular signaling mechanism and in vivo phenotype\",\n      \"pmids\": [\"22496642\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TDM recruits Mincle during FcγR-mediated phagocytosis and modulates phagosome maturation through SHP-1 and FcγRIIB, indicating inhibitory downstream signaling of Mincle during phagosome formation. This provides a mechanism for TDM-mediated virulence.\",\n      \"method\": \"IgG-opsonized bead assays with TDM coating, phagosome maturation assays, SHP-1 and FcγRIIB genetic/pharmacological inhibition\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — mechanistic dissection of inhibitory signaling with defined molecular components\",\n      \"pmids\": [\"28384255\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Clec4e (Mincle) in the CNS (specifically in perivascular macrophages, not in microglia or neurons) exacerbates neuronal loss following ischemic stroke. Bone marrow chimera experiments revealed that CNS-resident rather than recruited immune cell Mincle drives poor outcomes after transient MCAO.\",\n      \"method\": \"Mincle-/- mice (MCAO, spinal cord injury, heart/gut ischemia models), bone marrow chimeras, leukocyte infiltration and infarct size analysis\",\n      \"journal\": \"Journal of cerebral blood flow and metabolism\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — bone marrow chimera establishes cell-compartment specificity with defined in vivo phenotype\",\n      \"pmids\": [\"27492949\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Mincle and Syk are upregulated after cerebral ischemia. Piceatannol (a Syk inhibitor) reduces infarct volume, suppresses phospho-Syk, MMP9, and ICAM-1 expression, and upregulates Claudin5, indicating Mincle/Syk signaling participates in post-ischemic inflammation.\",\n      \"method\": \"Mincle/SAP130/pSyk immunohistochemistry in mouse and human brain, Syk inhibitor piceatannol in mouse MCAO model\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — pharmacological inhibition with defined molecular markers, no genetic KO\",\n      \"pmids\": [\"24212132\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Clec4e (Mincle) expression is increased in vasculature, cardiac myocytes, and infiltrating leukocytes after myocardial ischemia-reperfusion injury. Loss of Clec4e signaling reduces acute cardiac injury, neutrophil infiltration, and infarct size, and improves left ventricular structural and functional remodeling at 4 weeks. CNS-resident rather than recruited cell Mincle contributes (bone marrow chimera in stroke model referenced).\",\n      \"method\": \"Clec4e-/- mice in porcine and murine IRI models, transcriptomic profiling, LV functional assessment by imaging\",\n      \"journal\": \"JACC. Basic to translational science\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO in multiple species with defined cardiac functional outcomes and transcriptomic mechanism\",\n      \"pmids\": [\"34466750\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Mincle-Syk axis in dendritic cells senses gut microbiota; microbiota dysbiosis reduces lung Mincle expression on DCs, impairing their ability to activate naïve CD4 T cells and increasing Mtb susceptibility. TDB (Mincle ligand) administration rescues DC function and T cell response.\",\n      \"method\": \"Antibiotic-induced dysbiosis in mice, Mincle expression on lung DCs, DC-T cell co-culture assays, TDB rescue in vivo\",\n      \"journal\": \"Frontiers in immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — pharmacological rescue (TDB) without full genetic KO at the gut-lung interface\",\n      \"pmids\": [\"31231363\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Mincle recognizes the glycosylated surface (S)-layer of Tannerella forsythia in a specific, Ca2+-dependent manner via recombinant Mincle-Fc fusion protein binding. Mincle knockdown in macrophages reduces both pro- and anti-inflammatory cytokine secretion in response to T. forsythia and its S-layer.\",\n      \"method\": \"Recombinant Mincle-Fc binding assay, Mincle knockdown macrophages, cytokine measurements\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — direct binding assay plus KD, but single lab/method for novel pathogen recognition\",\n      \"pmids\": [\"28264048\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"SAP130 and Mincle mediate cross-talk between neuronal necroptosis and microglial immunity after SAH-related injury. Albumin binds microglial Mincle receptor directly, retarding Mincle/Syk/IL-1β signaling and attenuating SAP130-induced Mincle upregulation. The anti-inflammatory effect of albumin is similar to Mincle genetic knockdown.\",\n      \"method\": \"Co-IP (albumin-Mincle binding), Mincle siRNA knockdown in BV-2 cells, in vivo SAH rat model with albumin treatment\",\n      \"journal\": \"Brain, behavior, and immunity\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — direct binding by Co-IP, genetic KD, but albumin-Mincle interaction is novel and single-lab\",\n      \"pmids\": [\"27845194\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"C-type lectin receptors Mcl and Mincle, expressed in CNS myeloid cells, are crucial for pathogenesis of EAE (MS model). In vivo silencing of Mcl and Mincle or SAP130 blockade reduces T cell recruitment and reactivation to pathogenic Th17/GM-CSF phenotype. SAP130-Mincle signaling in the CNS is the critical driver.\",\n      \"method\": \"In vivo Mcl/Mincle siRNA silencing, SAP130 blockade, congenic rats with lower Mcl/Mincle expression, EAE model, human MS lesion analysis\",\n      \"journal\": \"The Journal of clinical investigation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — in vivo silencing epistasis, receptor blockade, and human MS lesion validation across species\",\n      \"pmids\": [\"31725411\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Glucosyl-diacylglycerol (Glc-DAG) of Streptococcus pneumoniae is identified as a Mincle ligand. Glc-DAG activates Mincle reporter cells and stimulates cytokine release from alveolar macrophages of WT but not Mincle-KO mice. Mincle deficiency increases bacterial loads and decreases survival in pneumococcal pneumonia, normalized by WT hematopoietic reconstitution.\",\n      \"method\": \"Reporter cell assay with purified Glc-DAG, Mincle-KO mice, bone marrow chimera\",\n      \"journal\": \"PLoS pathogens\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — purified ligand identified, genetic KO in vivo with bone marrow chimera\",\n      \"pmids\": [\"27923071\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"TEC ferroptosis in sepsis AKI triggers SAP130 release, which promotes M1 macrophage polarization through Mincle/Syk/NF-κB signaling. M1 macrophages in turn aggravate TEC ferroptosis. Neutralizing SAP130 or inhibiting Mincle expression blunts this feed-forward loop.\",\n      \"method\": \"Ferroptosis inhibitor Fer-1 in CLP/LPS AKI models, co-culture systems, SAP130 neutralizing antibody, Mincle knockdown, M1 polarization flow cytometry\",\n      \"journal\": \"International immunopharmacology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — pharmacological and KD approaches with defined SAP130-Mincle mechanism, single lab\",\n      \"pmids\": [\"38320352\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"CLEC4E (Mincle) is a C-type lectin receptor expressed on activated myeloid cells (macrophages, DCs, neutrophils) and TH17 cells that signals through the ITAM-bearing adaptor FcRγ and the Syk-CARD9-Bcl10-MALT1 pathway to drive proinflammatory cytokine production, autophagy, nitric oxide synthesis, and phagosome dynamics; it recognizes a broad array of glycolipid PAMPs (trehalose dimycolate, glucosyl-diacylglycerol, mannosyl residues) and endogenous DAMPs released from dead or damaged cells (SAP130, β-glucosylceramide, cholesterol/cholesterol sulfate, Prdx1), with ligand binding occurring via a Ca2+-dependent primary sugar-binding site and an adjacent hydrophobic groove in the CRD; its surface expression is upregulated by MyD88/TLR/NF-κB and C/EBPβ transcription, stabilized through heterodimer formation with MCL, and negatively regulated at the signaling level by a CD11b-Lyn-SIRPα-SHP1 complex or by an ITAMi-SHP1 configuration induced by certain pathogens.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"CLEC4E (Mincle) is a myeloid- and TH17-cell-expressed C-type lectin receptor that functions as a pattern-recognition receptor for microbial glycolipids and endogenous damage-associated molecular patterns, coupling innate danger sensing to proinflammatory signaling and adaptive immune polarization. Mincle recognizes diverse ligands—including mycobacterial trehalose dimycolate (TDM), bacterial glucosyl-diacylglycerols, fungal α-mannose, and host-derived β-glucosylceramide, cholesterol, cholesterol sulfate, SAP130, and peroxiredoxin 1—through a Ca²⁺-dependent primary sugar-binding site and an adjacent hydrophobic groove in its C-type lectin domain that accommodates acyl chains [PMID:24101491, PMID:23960080, PMID:28373578, PMID:26296894, PMID:18776906, PMID:37164261]. Upon ligand engagement, Mincle associates with the ITAM-bearing adaptor FcRγ and signals through Syk–CARD9–Bcl10–MALT1 to activate NF-κB, driving proinflammatory cytokine and nitric oxide production, autophagy, macrophage pyroptosis, and TH17 differentiation; surface expression is positively regulated by MyD88/TLR/NF-κB and C/EBPβ transcription and stabilized by heterodimerization with MCL via its stalk region [PMID:18776906, PMID:23630357, PMID:25156364, PMID:25888641, PMID:27005451, PMID:35504893]. Mincle signaling is negatively regulated by a CD11b–Lyn–SIRPα–SHP1 complex that dephosphorylates Syk and by an inhibitory ITAM (ITAMi) configuration induced by pathogens such as Leishmania, and dysregulated Mincle activity contributes to atherosclerosis, ischemia-reperfusion injury, neuroinflammation, and tumor immune evasion [PMID:29400702, PMID:27742545, PMID:27587433, PMID:27049944, PMID:34466750].\",\n  \"teleology\": [\n    {\n      \"year\": 2008,\n      \"claim\": \"Identifying Mincle's signaling adaptor and first endogenous ligand established it as an innate sensor of non-homeostatic cell death: Mincle couples to FcRγ to activate macrophages, and SAP130 released from dead cells triggers neutrophil infiltration via this axis.\",\n      \"evidence\": \"Co-immunoprecipitation, Mincle-deficient macrophages, antibody blockade in vivo\",\n      \"pmids\": [\"18776906\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of SAP130–Mincle interaction undefined\", \"Mechanism by which SAP130 is exposed or released from dead cells not determined\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Identification of TDM and α-mannose as microbial Mincle ligands revealed Mincle as a bona fide pattern-recognition receptor for mycobacteria and Malassezia, broadening its role from DAMP to PAMP sensing.\",\n      \"evidence\": \"Lipid fractionation, glycoconjugate microarray, site-directed mutagenesis of mannose-binding motif, Mincle-deficient mice challenged with TDM or Malassezia\",\n      \"pmids\": [\"20008526\", \"19171887\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Relative contribution of different mycobacterial glycolipids in whole-organism context not resolved\", \"Downstream signaling pathway not yet mapped\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Demonstrating FcRγ dependence for TDM/TDB responses and TH17 adjuvanticity placed Mincle in the ITAM-coupled CLR family and linked it to adaptive immune polarization.\",\n      \"evidence\": \"FcRγ and Mincle genetic KO mice, recombinant Mincle-Fc binding, tuberculosis subunit vaccine model\",\n      \"pmids\": [\"20164423\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether Mincle–FcRγ coupling is direct or requires additional accessory proteins not resolved\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Mincle expression on neutrophils and its role in TDM-induced cell adhesion via Src/Syk/MEK-dependent F-actin remodeling extended the receptor's functional relevance beyond macrophages.\",\n      \"evidence\": \"Mincle-KO mice, neutrophil depletion, kinase inhibitors, F-actin polymerization assays\",\n      \"pmids\": [\"22496642\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct Mincle ligand on neutrophil surface vs. soluble TDM encounter not distinguished\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Crystal structures of the Mincle CRD revealed dual binding determinants—a Ca²⁺-dependent sugar-binding site and an adjacent hydrophobic groove for acyl chains—explaining how Mincle recognizes glycolipids with both sugar headgroups and lipid tails, and the Syk–CARD9–Bcl10–MALT1 signaling cascade was mapped downstream.\",\n      \"evidence\": \"X-ray crystallography (human and bovine CRD), site-directed mutagenesis, synthetic analog binding, co-immunoprecipitation of MCL–Mincle–FcRγ, CARD9/caspase-1/ASC epistasis\",\n      \"pmids\": [\"24101491\", \"23960080\", \"23921530\", \"23630357\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Full-length receptor structure including transmembrane and stalk domains not determined\", \"Structural basis of MCL heterodimerization not resolved at atomic level\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Mincle was shown to engage pathogen-specific evasion mechanisms: Fonsecaea triggered Mdm2-dependent IRF1 degradation via Mincle–Syk–PKB, suppressing IL-12 and TH1 immunity; separately, NF-κB (not NFAT) was identified as the transcription factor binding the Mincle promoter downstream of Dectin-3/CARD9, defining a positive-feedback loop for Mincle expression.\",\n      \"evidence\": \"Genetic knockdown, signaling inhibitors, ChIP at Mincle promoter, Dectin-3-KO and CARD9-KO macrophages\",\n      \"pmids\": [\"24721577\", \"25202022\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Generalizability of IRF1 degradation mechanism to other Mincle ligands unknown\", \"Whether NF-κB subunits other than p65 contribute not fully explored\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"MCL was established as a chaperone that stabilizes Mincle surface expression through its stalk region; hydrophobic residues in the MCL stalk are required, and MCL deficiency reduces Mincle protein without affecting mRNA.\",\n      \"evidence\": \"Co-IP, mutagenesis of MCL stalk, MCL-KO and transgenic mice, flow cytometry\",\n      \"pmids\": [\"25888641\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Stoichiometry and oligomeric state of Mincle–MCL complex unknown\", \"Whether MCL chaperone function extends to other CLRs not tested\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"A burst of discoveries in 2016 expanded Mincle biology in three directions: (1) identification of endogenous lipid ligands (cholesterol, cholesterol sulfate) and their role in atherosclerosis and contact dermatitis; (2) discovery of an ITAMi–SHP1 inhibitory mode exploited by Leishmania; and (3) demonstration that Mincle drives translational control of NO synthesis via p38/eIF5A hypusination and maintains M1 macrophage identity through TLR4/NF-κB-dependent transcription.\",\n      \"evidence\": \"Mincle-KO bone marrow chimeras in Ldlr-KO atherosclerosis model, cholesterol-binding reporter assays, conditional SHP1-KO in DCs, Mincle-KO macrophages with p38 inhibitors and eIF5A hypusination assays, NF-κB/p65 ChIP at Mincle promoter\",\n      \"pmids\": [\"27587433\", \"26296894\", \"28292894\", \"27742545\", \"27089465\", \"28017324\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of species-specific cholesterol recognition (human but not mouse) unresolved\", \"How ITAMi vs. activating ITAM switch is determined at molecular level not defined\", \"Relative importance of transcriptional vs. translational control in different infection contexts unclear\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Transcriptional regulation of Mincle was further refined: C/EBPβ was shown to be a central transcription factor for Mincle expression and TDM/TDB responsiveness, while MyD88 (not MCL) was identified as required for microbial-induced Mincle upregulation; MCL is constitutively expressed but retained intracellularly until Mincle induction allows heterodimer surface translocation.\",\n      \"evidence\": \"C/EBPβ-KO macrophages with retroviral Mincle rescue, MyD88-KO and MCL-KO macrophages, surface vs. intracellular flow cytometry\",\n      \"pmids\": [\"25156364\", \"27005451\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether C/EBPβ binds Mincle promoter directly or via intermediary factors not confirmed by ChIP\", \"Intracellular retention mechanism of MCL not identified\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"β-Glucosylceramide was identified as a ubiquitous endogenous Mincle ligand released from damaged cells, establishing a lipid DAMP–Mincle axis validated by double-KO epistasis (GBA1/Mincle); species-specific ligand recognition was mapped to defined CRD residues for glycerol monomycolate, and acyl-chain branching was shown to govern glycolipid agonism.\",\n      \"evidence\": \"MS/NMR ligand identification, synthetic ligand validation, GBA1/Mincle double-KO mice, domain-swap chimeras, mutagenesis of positions 174–176 and 195–196\",\n      \"pmids\": [\"28373578\", \"24733387\", \"28223515\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Physiological contexts in which β-GlcCer reaches threshold concentrations in vivo not comprehensively mapped\", \"Full set of CRD residues governing species selectivity not enumerated\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"CD11b was identified as a negative regulator of Mincle signaling: mycobacterial activation triggers a Mincle–CD11b complex that recruits Lyn, SIRPα, and SHP1 to dephosphorylate Syk, providing a built-in brake on inflammation. MGDG from Group A Streptococcus was identified as another bacterial Mincle ligand critical for host defense.\",\n      \"evidence\": \"CD11b-KO macrophages and mice, co-IP of Mincle–CD11b–Lyn–SIRPα–SHP1, Mincle-KO mice infected with GAS\",\n      \"pmids\": [\"29400702\", \"30352847\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether CD11b inhibitory complex forms with all Mincle ligands or selectively with mycobacterial glycolipids not tested\", \"Relative hierarchy of SHP1-mediated inhibition (ITAMi vs. CD11b axis) not established\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Mincle–Syk signaling in dendritic cells was found to sense commensal microbiota in Peyer's patches, driving IL-6/IL-23-dependent intestinal TH17/ILC3 responses, RegIIIγ, and IgA—connecting Mincle to mucosal homeostasis beyond inflammation. Mincle also activated autophagy through MYD88 for intracellular Mtb restriction.\",\n      \"evidence\": \"Mincle-KO and DC-specific Syk conditional KO mice, intestinal immune profiling; Atg5-KO and Becn1-KD macrophages with autophagy flux assays\",\n      \"pmids\": [\"30709742\", \"31462144\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Specific commensal-derived Mincle ligands in the gut not identified\", \"Whether Mincle-induced autophagy is selective (xenophagy) or bulk not distinguished\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"β-Glucosylceramide was confirmed as a Mincle ligand in renal ischemia-reperfusion injury, with free cholesterol acting as a co-agonist; Mincle was also linked to macrophage pyroptosis driving intestinal inflammation and to tumor-associated macrophage reprogramming via Syk/NF-κB in cancer.\",\n      \"evidence\": \"Mincle-KO mice in IRI and colitis models, MS lipid identification, Syk inhibitor in colitis, scRNA-seq and Mincle siRNA in syngeneic tumor models\",\n      \"pmids\": [\"32797195\", \"32333776\", \"32532809\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of cholesterol–β-GlcCer cooperativity at the CRD not resolved\", \"Whether Mincle drives pyroptosis through canonical or non-canonical inflammasome pathways not fully distinguished\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Peroxiredoxin 1 was identified as an additional protein DAMP ligand for Mincle in AKI, and SAP130-induced Mincle expression was shown to be post-transcriptionally repressed by miR-219c-3p binding the Mincle 3′-UTR, adding a miRNA-level regulatory layer.\",\n      \"evidence\": \"Prdx1-KO mice, co-IP of Prdx1–Mincle, recombinant rescue; miRNA 3′-UTR reporter assay, lentiviral miR-219c-3p overexpression in UUO mice\",\n      \"pmids\": [\"37164261\", \"34556635\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Binding site on Mincle CRD for protein DAMPs (Prdx1, SAP130) not structurally mapped\", \"Broader miRNA regulatory landscape of Mincle unexplored\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"A T cell-intrinsic role for Mincle was established: β-GlcCer released during CNS inflammation activates Mincle on TH17 cells, triggering ASC–NLRP3 inflammasome assembly and Caspase-8-dependent IL-1β in an autocrine loop that sustains TH17 proliferation and EAE pathogenesis.\",\n      \"evidence\": \"T cell-specific Mincle conditional KO, NLRP3/ASC inflammasome assays, Caspase-8 inhibition, EAE model\",\n      \"pmids\": [\"35504893\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether other T helper subsets express functional Mincle not systematically tested\", \"Whether TH17 Mincle engagement occurs in human autoimmune disease not demonstrated\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"Key unresolved questions include the structural basis by which Mincle discriminates protein DAMPs (SAP130, Prdx1) from glycolipid ligands, the molecular determinants controlling the switch between activating ITAM and inhibitory ITAMi signaling modes, and whether therapeutic Mincle blockade can selectively dampen pathological inflammation without compromising antimicrobial defense.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No co-crystal structure of Mincle with any protein DAMP\", \"Molecular switch between ITAM and ITAMi configuration structurally undefined\", \"No clinical-stage Mincle-targeted therapeutic reported\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0060089\", \"supporting_discovery_ids\": [0, 1, 2, 3]},\n      {\"term_id\": \"GO:0008289\", \"supporting_discovery_ids\": [4, 5, 12, 21, 22]},\n      {\"term_id\": \"GO:0140299\", \"supporting_discovery_ids\": [0, 17, 21, 30]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005886\", \"supporting_discovery_ids\": [0, 6, 11, 20]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [0, 1, 3, 7, 8, 14, 26, 28]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [6, 7, 8, 13, 15, 27]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [29]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [32, 35]}\n    ],\n    \"complexes\": [\n      \"Mincle–MCL heterodimer\",\n      \"Mincle–FcRγ signaling complex\",\n      \"CD11b–Lyn–SIRPα–SHP1 inhibitory complex\"\n    ],\n    \"partners\": [\n      \"FCER1G\",\n      \"CLEC4D\",\n      \"SYK\",\n      \"CARD9\",\n      \"ITGAM\",\n      \"LYN\",\n      \"SIRPA\",\n      \"PTPN6\"\n    ],\n    \"other_free_text\": []\n  }\n}\n```"}