PMID- 2511630 OWN - NLM STAT- MEDLINE DCOM- 19900103 LR - 20190618 IS - 0036-8075 (Print) IS - 0036-8075 (Linking) VI - 246 IP - 4933 DP - 1989 Nov 24 TI - Thymic requirement for clonal deletion during T cell development. PG - 1044-6 AB - During T cell differentiation, self tolerance is established in part by the deletion of self-reactive T cells within the thymus (negative selection). The presence of T cell receptor (TCR)-alpha beta + T cells in older athymic (nu/nu) mice indicates that some T cells can also mature without thymic influence. Therefore, to determine whether the thymus is required for negative selection, TCR V beta expression was compared in athymic nu/nu mice and their congenic normal littermates. T cells expressing V beta 3 proteins are specific for minor lymphocyte stimulatory (Mlsc) determinants and are deleted intrathymically due to self tolerance in Mlsc+ mouse strains. Here it is shown that V beta 3+ T cells are deleted in Mlsc+ BALB/c nu/+ mice, but not in their BALB/c nu/nu littermates. Thus, the thymus is required for clonal deletion during T cell development. FAU - Fry, A M AU - Fry AM AD - Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892. FAU - Jones, L A AU - Jones LA FAU - Kruisbeek, A M AU - Kruisbeek AM FAU - Matis, L A AU - Matis LA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Antigens, Differentiation, T-Lymphocyte) RN - 0 (CD4 Antigens) RN - 0 (CD8 Antigens) RN - 0 (Macromolecular Substances) RN - 0 (Receptors, Antigen, T-Cell) SB - IM MH - Animals MH - Antigens, Differentiation, T-Lymphocyte/genetics MH - CD4 Antigens/genetics MH - CD8 Antigens MH - Flow Cytometry MH - Gene Expression MH - Macromolecular Substances MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred Strains MH - Mice, Nude MH - Receptors, Antigen, T-Cell/genetics MH - T-Lymphocytes/*immunology MH - Thymus Gland/*immunology EDAT- 1989/11/24 00:00 MHDA- 1989/11/24 00:01 CRDT- 1989/11/24 00:00 PHST- 1989/11/24 00:00 [pubmed] PHST- 1989/11/24 00:01 [medline] PHST- 1989/11/24 00:00 [entrez] AID - 10.1126/science.2511630 [doi] PST - ppublish SO - Science. 1989 Nov 24;246(4933):1044-6. doi: 10.1126/science.2511630.