{"gene":"LYZ","run_date":"2026-06-10T02:59:50","timeline":{"discoveries":[{"year":2023,"finding":"LYZ promotes HCC cell proliferation and migration in both autocrine and paracrine manners independent of its muramidase (enzymatic) activity, acting through cell surface GRP78 (csGRP78) to activate downstream pro-tumoral signaling pathways. LYZ expression in HCC cells is regulated by STAT3 activation.","method":"Loss-of-function (knockdown/knockout), overexpression, subcutaneous and orthotopic xenograft tumor models in NOD/SCID mice, mechanistic pathway analysis via csGRP78","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean KD/KO with defined cellular phenotype, in vivo xenograft validation, pathway placement via csGRP78, single lab with multiple orthogonal methods","pmids":["37428911"],"is_preprint":false},{"year":2025,"finding":"LYZ interacts with PEDV non-structural protein NSP8 (identified by IP-MS and confirmed by co-immunoprecipitation and laser confocal microscopy). LYZ promotes PEDV replication by downregulating RIG-I transcript levels through the m6A reader YTHDF2, thereby inhibiting IRF3 phosphorylation, nuclear translocation, and IFN-β production. The N-terminal domain of LYZ is required for this pro-viral function.","method":"Immunoprecipitation-mass spectrometry (IP-MS), co-immunoprecipitation, laser confocal microscopy, overexpression/knockdown with viral replication readout, domain deletion analysis, IRF3 phosphorylation and nuclear translocation assays","journal":"International journal of biological macromolecules","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal Co-IP, multiple orthogonal methods (IP-MS, confocal, domain mapping, signaling assays), single lab","pmids":["40253018"],"is_preprint":false},{"year":2024,"finding":"During typhoid fever, typhoid toxin-induced ATM/ATR-dependent DNA damage responses stimulate secretion of LYZ from host cells. Secreted LYZ alone inhibited secretion of Salmonella virulence effector proteins SipB and SopE, and caused loss of Salmonella morphology characterized by spheroplast formation; this spheroplast formation was enhanced by lactoferrin.","method":"Quantitative proteomic analysis of plasma from bacteraemic participants, recombinant typhoid toxin treatment and infection of cultured cells, bacterial morphology assays, virulence effector secretion assays","journal":"bioRxiv","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct in vitro antibacterial mechanism assay with recombinant protein, human challenge study proteomics, single study","pmids":[],"is_preprint":true},{"year":2020,"finding":"Estrogen deficiency causes shedding of Paneth cells, leading to decreased LYZ expression in the gut; restoration of Paneth cell populations by arecanut seed polyphenol (ACP) increased LYZ expression, which was associated with regulation of gut microbiota composition and reduction of inflammatory reactions in an osteoporosis rat model.","method":"Ovariectomy rat model, histological analysis of Paneth cells, LYZ quantification, gut microbiota profiling, cytokine and macrophage infiltration measurement","journal":"Journal of agricultural and food chemistry","confidence":"Low","confidence_rationale":"Tier 3 / Weak — in vivo rodent model with associative measurements, no direct mechanistic reconstitution of LYZ function, single lab","pmids":["33382620"],"is_preprint":false}],"current_model":"LYZ (lysozyme) is a secretory antimicrobial enzyme canonically expressed in monocytes/macrophages and Paneth cells that cleaves bacterial peptidoglycan; beyond this classical muramidase activity, LYZ can promote tumor cell proliferation and migration through a muramidase-independent mechanism involving cell surface GRP78 and STAT3-regulated expression in HCC, and can facilitate viral (PEDV) replication by binding viral NSP8, downregulating RIG-I transcripts via YTHDF2-mediated m6A degradation to suppress IFN-β production, while in the context of bacterial infection, toxin-induced host DNA damage responses trigger LYZ secretion that causes spheroplast formation and inhibits Salmonella virulence effector secretion."},"narrative":{"mechanistic_narrative":"LYZ (lysozyme) is classically a secretory antimicrobial muramidase, but the available corpus characterizes additional muramidase-independent activities in cancer and host-pathogen interactions [PMID:37428911, PMID:40253018]. In hepatocellular carcinoma, LYZ promotes tumor cell proliferation and migration in both autocrine and paracrine fashion independently of its enzymatic activity, signaling through cell-surface GRP78 (csGRP78) to activate pro-tumoral pathways; its expression in this context is driven by STAT3 activation [PMID:37428911]. In the antiviral setting, LYZ acts as a pro-viral host factor: it binds porcine epidemic diarrhea virus NSP8 via its N-terminal domain and downregulates RIG-I transcripts through the m6A reader YTHDF2, thereby blunting IRF3 phosphorylation and nuclear translocation and suppressing IFN-β production [PMID:40253018]. Consistent with its classical antibacterial role, host DNA damage responses during typhoid fever trigger LYZ secretion, and secreted LYZ inhibits Salmonella virulence effector secretion and induces bacterial spheroplast formation. Beyond these contexts, no further mechanistic detail has been characterized in the available corpus.","teleology":[{"year":2020,"claim":"Linked intestinal LYZ levels to Paneth cell integrity and gut homeostasis, establishing that LYZ expression tracks with Paneth cell populations and influences microbiota and inflammation under estrogen deficiency.","evidence":"Ovariectomy rat osteoporosis model with Paneth cell histology, LYZ quantification, and gut microbiota/cytokine profiling","pmids":["33382620"],"confidence":"Low","gaps":["Associative rodent model with no direct reconstitution of LYZ function","Does not establish whether LYZ is causal versus a marker of Paneth cell loss","No molecular mechanism linking LYZ to microbiota or inflammation"]},{"year":2023,"claim":"Revealed a non-canonical, enzyme-independent pro-tumoral function of LYZ, answering whether lysozyme acts only as a muramidase or also as a signaling ligand in cancer.","evidence":"Knockdown/knockout and overexpression in HCC cells with subcutaneous and orthotopic xenografts in NOD/SCID mice; pathway placement through csGRP78 and STAT3-regulated expression","pmids":["37428911"],"confidence":"Medium","gaps":["Downstream csGRP78-activated signaling effectors not fully resolved","Single lab; muramidase-independence shown but structural basis of csGRP78 binding undefined","Generality beyond HCC not established"]},{"year":2025,"claim":"Defined LYZ as a pro-viral host factor that suppresses innate immune signaling, addressing how a viral protein might co-opt LYZ to evade interferon responses.","evidence":"IP-MS and reciprocal co-IP with PEDV NSP8, confocal colocalization, domain-deletion mapping, and viral replication/IRF3 phosphorylation/IFN-β readouts","pmids":["40253018"],"confidence":"Medium","gaps":["Mechanism by which LYZ-NSP8 interaction triggers YTHDF2-mediated RIG-I transcript degradation not resolved","Single lab; whether endogenous LYZ recapitulates the effect in vivo unclear","Relevance to human viral infections not tested"]},{"year":2024,"claim":"Connected host DNA damage signaling to LYZ secretion and demonstrated a direct antibacterial action against Salmonella, clarifying how the classical antimicrobial role is regulated during systemic infection.","evidence":"Plasma proteomics from bacteraemic participants, recombinant typhoid toxin treatment, and recombinant LYZ bacterial morphology and effector-secretion assays (preprint)","pmids":[],"confidence":"Medium","gaps":["Preprint; not yet peer-reviewed","ATM/ATR-to-secretion signaling steps not mechanistically dissected","Whether spheroplast formation reflects muramidase activity or another mechanism not resolved"]},{"year":null,"claim":"How LYZ's muramidase-independent signaling functions mechanistically integrate with its classical enzymatic antimicrobial role across tissues remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unifying model linking enzymatic and non-enzymatic activities","Structural basis of csGRP78 and NSP8 binding undefined","Tissue- and context-specific regulation of LYZ secretion not characterized"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[0]},{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[2]}],"localization":[{"term_id":"GO:0005576","term_label":"extracellular region","supporting_discovery_ids":[2]},{"term_id":"GO:0005886","term_label":"plasma membrane","supporting_discovery_ids":[0]}],"pathway":[{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[1,2]}],"complexes":[],"partners":["HSPA5","NSP8","YTHDF2"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"P61626","full_name":"Lysozyme C","aliases":["1,4-beta-N-acetylmuramidase C"],"length_aa":148,"mass_kda":16.5,"function":"Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents","subcellular_location":"Secreted","url":"https://www.uniprot.org/uniprotkb/P61626/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/LYZ","classification":"Not Classified","n_dependent_lines":6,"n_total_lines":1208,"dependency_fraction":0.004966887417218543},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"CAPZB","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/search/LYZ","total_profiled":1310},"omim":[{"mim_id":"621110","title":"VITELLINE MEMBRANE OUTER LAYER PROTEIN 1 HOMOLOG; VMO1","url":"https://www.omim.org/entry/621110"},{"mim_id":"620658","title":"AMYLOIDOSIS, HEREDITARY SYSTEMIC 5; AMYLD5","url":"https://www.omim.org/entry/620658"},{"mim_id":"616547","title":"LYSOZYME G2; LYG2","url":"https://www.omim.org/entry/616547"},{"mim_id":"612751","title":"LYSOZYME-LIKE 6; LYZL6","url":"https://www.omim.org/entry/612751"},{"mim_id":"612750","title":"LYSOZYME-LIKE 4; LYZL4","url":"https://www.omim.org/entry/612750"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Approved","locations":[{"location":"Golgi apparatus","reliability":"Approved"},{"location":"Actin filaments","reliability":"Approved"},{"location":"Nucleoplasm","reliability":"Additional"}],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in all","driving_tissues":[{"tissue":"bone marrow","ntpm":9984.7},{"tissue":"salivary gland","ntpm":21193.7},{"tissue":"stomach 1","ntpm":8449.1}],"url":"https://www.proteinatlas.org/search/LYZ"},"hgnc":{"alias_symbol":[],"prev_symbol":[]},"alphafold":{"accession":"P61626","domains":[{"cath_id":"1.10.530.10","chopping":"22-142","consensus_level":"medium","plddt":98.4365,"start":22,"end":142}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/P61626","model_url":"https://alphafold.ebi.ac.uk/files/AF-P61626-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-P61626-F1-predicted_aligned_error_v6.png","plddt_mean":94.06},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=LYZ","jax_strain_url":"https://www.jax.org/strain/search?query=LYZ"},"sequence":{"accession":"P61626","fasta_url":"https://rest.uniprot.org/uniprotkb/P61626.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/P61626/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/P61626"}},"corpus_meta":[{"pmid":"33382620","id":"PMC_33382620","title":"Arecanut (Areca catechu L.) Seed Polyphenol-Ameliorated Osteoporosis by Altering Gut Microbiome via LYZ and the Immune System in Estrogen-Deficient Rats.","date":"2020","source":"Journal of agricultural and food chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/33382620","citation_count":53,"is_preprint":false},{"pmid":"37428911","id":"PMC_37428911","title":"Aberrant LYZ expression in tumor cells serves as the potential biomarker and target for HCC and promotes tumor progression via csGRP78.","date":"2023","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/37428911","citation_count":35,"is_preprint":false},{"pmid":"27074443","id":"PMC_27074443","title":"Molecular cloning, inducible expression and antibacterial analysis of a novel i-type lysozyme (lyz-i2) in Pacific white shrimp, Litopenaeus vannamei.","date":"2016","source":"Fish & shellfish immunology","url":"https://pubmed.ncbi.nlm.nih.gov/27074443","citation_count":25,"is_preprint":false},{"pmid":"22080112","id":"PMC_22080112","title":"Shrimp invertebrate lysozyme i-lyz: gene structure, molecular model and response of c and i lysozymes to lipopolysaccharide (LPS).","date":"2011","source":"Fish & shellfish immunology","url":"https://pubmed.ncbi.nlm.nih.gov/22080112","citation_count":24,"is_preprint":false},{"pmid":"35776277","id":"PMC_35776277","title":"Determination of deleterious single-nucleotide polymorphisms of human LYZ C gene: an in silico study.","date":"2022","source":"Journal, genetic engineering & biotechnology","url":"https://pubmed.ncbi.nlm.nih.gov/35776277","citation_count":20,"is_preprint":false},{"pmid":"27611486","id":"PMC_27611486","title":"Variability of lysozyme and lactoferrin bioactive protein concentrations in equine milk in relation to LYZ and LTF gene polymorphisms and expression.","date":"2016","source":"Journal of the science of food and agriculture","url":"https://pubmed.ncbi.nlm.nih.gov/27611486","citation_count":13,"is_preprint":false},{"pmid":"39379786","id":"PMC_39379786","title":"D-Xylose Ameliorates Non-Alcoholic Fatty Liver Disease by Targeting Macrophage-expressed LYZ Gene.","date":"2024","source":"Cell biochemistry and biophysics","url":"https://pubmed.ncbi.nlm.nih.gov/39379786","citation_count":2,"is_preprint":false},{"pmid":"21822941","id":"PMC_21822941","title":"¹H, ¹³C and ¹⁵N NMR assignments of inactive form of P1 endolysin Lyz.","date":"2011","source":"Biomolecular NMR assignments","url":"https://pubmed.ncbi.nlm.nih.gov/21822941","citation_count":2,"is_preprint":false},{"pmid":"40253018","id":"PMC_40253018","title":"Lysozyme (LYZ) promotes PEDV replication via degrading m6A methylation of RIG-I transcripts through YTHDF2.","date":"2025","source":"International journal of biological macromolecules","url":"https://pubmed.ncbi.nlm.nih.gov/40253018","citation_count":1,"is_preprint":false},{"pmid":"41384115","id":"PMC_41384115","title":"SPP1, LYZ, and MCM5: potential diagnostic biomarkers for rheumatoid arthritis and cervical cancer comorbidity.","date":"2025","source":"Frontiers in medicine","url":"https://pubmed.ncbi.nlm.nih.gov/41384115","citation_count":0,"is_preprint":false},{"pmid":"41548764","id":"PMC_41548764","title":"Cross-scale causal inference integrated with single-cell profiling and molecular simulations reveals a macrophage CSF1R-CD68-LYZ axis linking benzo[a]pyrene to erectile dysfunction.","date":"2026","source":"Reproductive toxicology (Elmsford, N.Y.)","url":"https://pubmed.ncbi.nlm.nih.gov/41548764","citation_count":0,"is_preprint":false},{"pmid":"41514850","id":"PMC_41514850","title":"LYZ Gene as a Novel Therapeutic Target and Diagnostic Biomarker in Glioblastoma: Insights from Multi-Omics Analysis and Functional Validation.","date":"2025","source":"Biology","url":"https://pubmed.ncbi.nlm.nih.gov/41514850","citation_count":0,"is_preprint":false},{"pmid":null,"id":"bio_10.1101_2024.12.13.628371","title":"Typhoid toxin of  <i>Salmonella</i>  Typhi elicits host antimicrobial response during acute typhoid fever","date":"2024-12-14","source":"bioRxiv","url":"https://doi.org/10.1101/2024.12.13.628371","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.01.22.633611","title":"Molecular Insights into Fungal Innate Immunity Using the  <i>Neurospora crassa - Pseudomonas syringae</i>  Model","date":"2025-01-24","source":"bioRxiv","url":"https://doi.org/10.1101/2025.01.22.633611","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2024.11.14.24317055","title":"Leveraging Deep Learning of Chest Radiograph Images to Identify Individuals at High Risk for Chronic Obstructive Pulmonary Disease","date":"2024-11-15","source":"bioRxiv","url":"https://doi.org/10.1101/2024.11.14.24317055","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2024.07.02.601267","title":"Molecular characterization of response to etrolizumab and anti-TNF reveals treatment resistance in ulcerative colitis is associated with an abundance of residual neutrophil subsets and inflammatory fibroblast populations","date":"2024-07-04","source":"bioRxiv","url":"https://doi.org/10.1101/2024.07.02.601267","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2025.03.04.641394","title":"Single-cell profiling of blood and cerebrospinal fluid in tuberculous meningitis","date":"2025-03-10","source":"bioRxiv","url":"https://doi.org/10.1101/2025.03.04.641394","citation_count":0,"is_preprint":true},{"pmid":null,"id":"bio_10.1101_2024.10.24.620025","title":"Filtering cells with high mitochondrial content removes viable metabolically altered malignant cell populations in cancer single-cell studies","date":"2024-10-25","source":"bioRxiv","url":"https://doi.org/10.1101/2024.10.24.620025","citation_count":0,"is_preprint":true}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":12084,"output_tokens":1241,"usd":0.027433,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":7908,"output_tokens":2089,"usd":0.045882,"stage2_stop_reason":"end_turn"},"total_usd":0.073315,"stage1_batch_id":"msgbatch_01BbTCMyrRPyhtEq6b1MdwCN","stage2_batch_id":"msgbatch_011dEed5bbxYvTAaQWKJevxu","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2023,\n      \"finding\": \"LYZ promotes HCC cell proliferation and migration in both autocrine and paracrine manners independent of its muramidase (enzymatic) activity, acting through cell surface GRP78 (csGRP78) to activate downstream pro-tumoral signaling pathways. LYZ expression in HCC cells is regulated by STAT3 activation.\",\n      \"method\": \"Loss-of-function (knockdown/knockout), overexpression, subcutaneous and orthotopic xenograft tumor models in NOD/SCID mice, mechanistic pathway analysis via csGRP78\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean KD/KO with defined cellular phenotype, in vivo xenograft validation, pathway placement via csGRP78, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"37428911\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"LYZ interacts with PEDV non-structural protein NSP8 (identified by IP-MS and confirmed by co-immunoprecipitation and laser confocal microscopy). LYZ promotes PEDV replication by downregulating RIG-I transcript levels through the m6A reader YTHDF2, thereby inhibiting IRF3 phosphorylation, nuclear translocation, and IFN-β production. The N-terminal domain of LYZ is required for this pro-viral function.\",\n      \"method\": \"Immunoprecipitation-mass spectrometry (IP-MS), co-immunoprecipitation, laser confocal microscopy, overexpression/knockdown with viral replication readout, domain deletion analysis, IRF3 phosphorylation and nuclear translocation assays\",\n      \"journal\": \"International journal of biological macromolecules\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal Co-IP, multiple orthogonal methods (IP-MS, confocal, domain mapping, signaling assays), single lab\",\n      \"pmids\": [\"40253018\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"During typhoid fever, typhoid toxin-induced ATM/ATR-dependent DNA damage responses stimulate secretion of LYZ from host cells. Secreted LYZ alone inhibited secretion of Salmonella virulence effector proteins SipB and SopE, and caused loss of Salmonella morphology characterized by spheroplast formation; this spheroplast formation was enhanced by lactoferrin.\",\n      \"method\": \"Quantitative proteomic analysis of plasma from bacteraemic participants, recombinant typhoid toxin treatment and infection of cultured cells, bacterial morphology assays, virulence effector secretion assays\",\n      \"journal\": \"bioRxiv\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct in vitro antibacterial mechanism assay with recombinant protein, human challenge study proteomics, single study\",\n      \"pmids\": [],\n      \"is_preprint\": true\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Estrogen deficiency causes shedding of Paneth cells, leading to decreased LYZ expression in the gut; restoration of Paneth cell populations by arecanut seed polyphenol (ACP) increased LYZ expression, which was associated with regulation of gut microbiota composition and reduction of inflammatory reactions in an osteoporosis rat model.\",\n      \"method\": \"Ovariectomy rat model, histological analysis of Paneth cells, LYZ quantification, gut microbiota profiling, cytokine and macrophage infiltration measurement\",\n      \"journal\": \"Journal of agricultural and food chemistry\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — in vivo rodent model with associative measurements, no direct mechanistic reconstitution of LYZ function, single lab\",\n      \"pmids\": [\"33382620\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"LYZ (lysozyme) is a secretory antimicrobial enzyme canonically expressed in monocytes/macrophages and Paneth cells that cleaves bacterial peptidoglycan; beyond this classical muramidase activity, LYZ can promote tumor cell proliferation and migration through a muramidase-independent mechanism involving cell surface GRP78 and STAT3-regulated expression in HCC, and can facilitate viral (PEDV) replication by binding viral NSP8, downregulating RIG-I transcripts via YTHDF2-mediated m6A degradation to suppress IFN-β production, while in the context of bacterial infection, toxin-induced host DNA damage responses trigger LYZ secretion that causes spheroplast formation and inhibits Salmonella virulence effector secretion.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"LYZ (lysozyme) is classically a secretory antimicrobial muramidase, but the available corpus characterizes additional muramidase-independent activities in cancer and host-pathogen interactions [#0, #1]. In hepatocellular carcinoma, LYZ promotes tumor cell proliferation and migration in both autocrine and paracrine fashion independently of its enzymatic activity, signaling through cell-surface GRP78 (csGRP78) to activate pro-tumoral pathways; its expression in this context is driven by STAT3 activation [#0]. In the antiviral setting, LYZ acts as a pro-viral host factor: it binds porcine epidemic diarrhea virus NSP8 via its N-terminal domain and downregulates RIG-I transcripts through the m6A reader YTHDF2, thereby blunting IRF3 phosphorylation and nuclear translocation and suppressing IFN-\\u03b2 production [#1]. Consistent with its classical antibacterial role, host DNA damage responses during typhoid fever trigger LYZ secretion, and secreted LYZ inhibits Salmonella virulence effector secretion and induces bacterial spheroplast formation [#2]. Beyond these contexts, no further mechanistic detail has been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 2020,\n      \"claim\": \"Linked intestinal LYZ levels to Paneth cell integrity and gut homeostasis, establishing that LYZ expression tracks with Paneth cell populations and influences microbiota and inflammation under estrogen deficiency.\",\n      \"evidence\": \"Ovariectomy rat osteoporosis model with Paneth cell histology, LYZ quantification, and gut microbiota/cytokine profiling\",\n      \"pmids\": [\"33382620\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"Associative rodent model with no direct reconstitution of LYZ function\",\n        \"Does not establish whether LYZ is causal versus a marker of Paneth cell loss\",\n        \"No molecular mechanism linking LYZ to microbiota or inflammation\"\n      ]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Revealed a non-canonical, enzyme-independent pro-tumoral function of LYZ, answering whether lysozyme acts only as a muramidase or also as a signaling ligand in cancer.\",\n      \"evidence\": \"Knockdown/knockout and overexpression in HCC cells with subcutaneous and orthotopic xenografts in NOD/SCID mice; pathway placement through csGRP78 and STAT3-regulated expression\",\n      \"pmids\": [\"37428911\"],\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"\",\n      \"gaps\": [\n        \"Downstream csGRP78-activated signaling effectors not fully resolved\",\n        \"Single lab; muramidase-independence shown but structural basis of csGRP78 binding undefined\",\n        \"Generality beyond HCC not established\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Defined LYZ as a pro-viral host factor that suppresses innate immune signaling, addressing how a viral protein might co-opt LYZ to evade interferon responses.\",\n      \"evidence\": \"IP-MS and reciprocal co-IP with PEDV NSP8, confocal colocalization, domain-deletion mapping, and viral replication/IRF3 phosphorylation/IFN-\\u03b2 readouts\",\n      \"pmids\": [\"40253018\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Mechanism by which LYZ-NSP8 interaction triggers YTHDF2-mediated RIG-I transcript degradation not resolved\",\n        \"Single lab; whether endogenous LYZ recapitulates the effect in vivo unclear\",\n        \"Relevance to human viral infections not tested\"\n      ]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Connected host DNA damage signaling to LYZ secretion and demonstrated a direct antibacterial action against Salmonella, clarifying how the classical antimicrobial role is regulated during systemic infection.\",\n      \"evidence\": \"Plasma proteomics from bacteraemic participants, recombinant typhoid toxin treatment, and recombinant LYZ bacterial morphology and effector-secretion assays (preprint)\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Preprint; not yet peer-reviewed\",\n        \"ATM/ATR-to-secretion signaling steps not mechanistically dissected\",\n        \"Whether spheroplast formation reflects muramidase activity or another mechanism not resolved\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How LYZ's muramidase-independent signaling functions mechanistically integrate with its classical enzymatic antimicrobial role across tissues remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No unifying model linking enzymatic and non-enzymatic activities\",\n        \"Structural basis of csGRP78 and NSP8 binding undefined\",\n        \"Tissue- and context-specific regulation of LYZ secretion not characterized\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [2]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005576\", \"supporting_discovery_ids\": [2]},\n      {\"term_id\": \"GO:0005886\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [1, 2]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"HSPA5\", \"NSP8\", \"YTHDF2\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":3,"faith_total":3,"faith_pct":100.0}}