{"id":"5f42a9d4-ff4c-5b45-bfc4-c77b81e92ad1","stable_key":"a2968a2f-5b00-5212-8b8c-8a4262bcb149:tet2-loss-increases-hspc-self-renewal","predicate":"loss_increases","statement":"Conditional deletion of Tet2 in the mouse haematopoietic compartment increased stem-cell self-renewal in competitive transplant assays, and Tet2 heterozygous mice also showed increased self-renewal and extramedullary haematopoiesis.","claim_class":"mechanistic","status":"source_derived_draft","evidence_grade":"ungraded","direction":"positive","is_public":true,"mechanism_event_id":"1bce87fe-70d1-56f9-9984-c567fd1b088c","mechanism_event_label":"Conditional deletion of Tet2 in the mouse haematopoietic compartment increased stem-cell self-renewal in competitive transplant assays, and Tet2 heterozygous mice also showed increased self-renewal and extramedullary haematopoiesis.","subject":{"id":"36d7160b-6534-58a6-a0df-55bcde8e740c","slug":"tet2-mouse","display_name":"Mouse Tet2","entity_type_key":"protein"},"object":{"id":"ff7cb8a3-f953-5748-9d92-def3acf2ba95","slug":"mouse-hspc-self-renewal","display_name":"Mouse haematopoietic stem and progenitor cell self-renewal","entity_type_key":"cellular_process"},"evidence_count":1,"mechanism_event":{"id":"1bce87fe-70d1-56f9-9984-c567fd1b088c","stable_key":"a2968a2f-5b00-5212-8b8c-8a4262bcb149:tet2-loss-increases-hspc-self-renewal-event","event_type":"observed_relationship","label":"Conditional deletion of Tet2 in the mouse haematopoietic compartment increased stem-cell self-renewal in competitive transplant assays, and Tet2 heterozygous mice also showed increased self-renewal and extramedullary haematopoiesis.","description":"Losing Tet2 made blood stem cells renew themselves more than they should.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"36d7160b-6534-58a6-a0df-55bcde8e740c","slug":"tet2-mouse","display_name":"Mouse Tet2","entity_type_key":"protein"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"ff7cb8a3-f953-5748-9d92-def3acf2ba95","slug":"mouse-hspc-self-renewal","display_name":"Mouse haematopoietic stem and progenitor cell self-renewal","entity_type_key":"cellular_process"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""}]},"contexts":[{"dimension":"availability_state","value_text":"machinery_impairment","comparator":null,"unit":null,"notes":"Imported condition classification; unverified.","entity":null},{"dimension":"duration","value_text":"In vivo, to the development of disease","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"experimental_model","value_text":"Conditional Tet2-knockout mice; competitive transplantation","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"exposure","value_text":"Conditional genetic deletion of Tet2; homozygous and heterozygous","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Haploinsufficiency means one damaged copy already changes the phenotype; this is a genetic model, not a nutritional one.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"organism","value_text":"Mus musculus","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Losing Tet2 made blood stem cells renew themselves more than they should.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[moran-crusio-2011] Tet2 loss leads to increased hematopoietic stem cell self-renewal and myeloid transformation (2011). https://pubmed.ncbi.nlm.nih.gov/21723200/ DOI: 10.1016/j.ccr.2011.06.001","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"tissue","value_text":"Haematopoietic stem cell compartment","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"trigger_kind","value_text":"machinery_impairment","comparator":null,"unit":null,"notes":"Imported condition classification; unverified.","entity":null}],"evidence":[{"id":"94526e7a-278c-5794-a42f-2b9e0a21f3ed","evidence_kind":"source_excerpt","locator":"Lines 53-61","start_line":53,"end_line":61,"excerpt":"## tet2-loss-increases-hspc-self-renewal\nConditional deletion of Tet2 in the mouse haematopoietic compartment increased stem-cell self-renewal in competitive transplant assays, and Tet2 heterozygous mice also showed increased self-renewal and extramedullary haematopoiesis.\nModel/species: Conditional Tet2-knockout mice; competitive transplantation\nOrganism: Mus musculus\nTissue/system: Haematopoietic stem cell compartment\nExposure: Conditional genetic deletion of Tet2; homozygous and heterozygous\nDuration: In vivo, to the development of disease\nLimits: Haploinsufficiency means one damaged copy already changes the phenotype; this is a genetic model, not a nutritional one.\nPrimary reference: [moran-crusio-2011] Tet2 loss leads to increased hematopoietic stem cell self-renewal and myeloid transformation (2011). https://pubmed.ncbi.nlm.nih.gov/21723200/ DOI: 10.1016/j.ccr.2011.06.001","model_system":"Conditional Tet2-knockout mice; competitive transplantation","directness":"reported_statement","verification_status":"source_derived_draft","notes":"","relationship":"supports","weight":1.0,"link_notes":"","source":{"id":"c0b9b176-985b-55c7-b8f5-f3ca16a7ddfe","stable_key":"import-a2968a2f-5b00-5212-8b8c-8a4262bcb149","title":"TET2 loss and malignancy: the step between a nutrient-responsive enzyme and the disease (2026-09-23)","document_type":"imported_text","citation_label":"Original AI-assisted curation of twelve primary studies located by Europe PMC title search, with every statement drafted from the retrieved abstract. Two pairs share a laboratory and are recorded as one line of evidence each. Genetic loss of function, pharmacological exposure and dietary depletion are kept as separate record types. Not publisher full text.","file_path":"","sha256":"22e2c8388d4f0c1813546ba6a9ccee3fa14c0c8f578bd9bd80103c1390b2536b","revision_id":"fbc29d8d-0420-562c-bfdb-1b5af42f2d08","review_status":"unverified_draft","notes":""}}],"relations":[],"conflicts":[],"corrections":[],"research":null}