T-bet is a member of the T-box family of transcription factors that appears to regulate lineage commitment in CD4 T helper (TH) lymphocytes in part by activating the hallmark TH1 cytokine,… (More)
The ATM (ataxia-telangiectasia mutated) protein kinase mediates early cellular responses to DNA double-strand breaks (DSBs) generated during metabolic processes or by DNA-damaging agents. ATM… (More)
Susceptibility to Crohn’s disease, a complex inflammatory disease involving the small intestine, is controlled by over 30 loci. One Crohn’s disease risk allele is in ATG16L1, a gene homologous to the… (More)
DNA double-strand breaks (DSBs) are generated by the recombination activating gene (RAG) endonuclease in all developing lymphocytes as they assemble antigen receptor genes. DNA cleavage by RAG occurs… (More)
Germinal centers (GCs) are sites of intense B cell proliferation and are central for T cell–dependent antibody responses. However, the role of c-Myc, a key cell-cycle regulator, in this process has… (More)
Susannah L Hewitt, Bu Yin, Yanhong Ji, Julie Chaumeil, Katarzyna Marszalek, Jeannette Tenthorey, Giorgia Salvagiotto, Natalie Steinel, Laura B Ramsey, Jacques Ghysdael, Michael A Farrar, Barry P… (More)
Variable, diversity and joining (V(D)J) recombination and class-switch recombination use overlapping but distinct non-homologous end joining pathways to repair DNA double-strand-break intermediates.… (More)
The DNA damage response (DDR) protein 53BP1 protects DNA ends from excessive resection in G1, and thereby favors repair by nonhomologous end-joining (NHEJ) as opposed to homologous recombination… (More)
Antigen receptor variable region genes are assembled from germline variable (V), diversity (D), and joining (J) gene segments. This process requires expression of V(D)J recombinase activity, and… (More)
DNA double-strand breaks are generated by genotoxic agents and by cellular endonucleases as intermediates of several important physiological processes. The cellular response to genotoxic DNA breaks… (More)