{"doi":"10.17615/69r2-x585","title":"The Role of Brg1 , a Catalytic Subunit of Mammalian Chromatin-remodeling Complexes, in T Cell Development","abstract":"Mammalian SWI–SNF-related complexes use brahma-related gene 1 (Brg1) as a catalytic subunit to remodel nucleosomes and regulate transcription. Recent biochemical data has linked Brg1 function to genes important for T lymphocyte differentiation. To investigate the role of SWI–SNF-related complexes in this lineage, we ablated Brg1 function in T lymphocytes. T cell–specific Brg1-deficient mice showed profound thymic abnormalities, CD4 derepression at the double negative (DN; CD4− CD8−) stage, and a developmental block at the DN to double positive (CD4+ CD8+) transition. 5′-bromo-2′-deoxyuridine incorporation and annexin V staining establish a role for Brg1 complexes in the regulation of thymocyte cell proliferation and survival. This Brg1-dependent cell survival is specific for developing thymocytes as indicated by the presence of Brg1-deficient mature T lymphocytes that have escaped the developmental block in the thymus. However, reductions in peripheral T cell populations lead to immunodeficiency and compromised health of mutant mice. These results highlight the importance of chromatin-remodeling complexes at different stages in the development of a mammalian cell lineage.","journal":"UNC Libraries","year":2020,"id":126026,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":2,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9492,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":248335,"name":"Scott J. Bultman","orcid":null,"position":1,"is_corresponding":false},{"id":573463,"name":"Thomas C. Gebuhr","orcid":null,"position":2,"is_corresponding":false},{"id":275068,"name":"Terry Magnuson","orcid":"0000-0002-0792-835X","position":3,"is_corresponding":false},{"id":393862,"name":"Virginia Godfrey","orcid":null,"position":4,"is_corresponding":false},{"id":392250,"name":"Kovalev Gi","orcid":"0000-0003-4346-3585","position":5,"is_corresponding":false},{"id":255662,"name":"Lishan Su","orcid":"0000-0002-0350-5560","position":0,"is_corresponding":true}],"reference_count":0,"raw_metadata":null,"created_at":"2026-07-18T23:15:19.482428Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}