PMID- 7777536 OWN - NLM STAT- MEDLINE DCOM- 19950712 LR - 20190501 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 92 IP - 12 DP - 1995 Jun 6 TI - Growth factors can enhance lymphocyte survival without committing the cell to undergo cell division. PG - 5491-5 AB - Growth factors have been defined by their ability to promote the proliferative expansion of receptor-bearing cells. For example, antigen-activated T cells expressing the alpha beta gamma form of the interleukin 2 (IL-2) receptor will proliferate in response to IL-2. In contrast, resting T cells, which express the IL-2 receptor beta and gamma chains, do not proliferate in response to IL-2. We demonstrate that the survival of resting T cells following gamma irradiation is greatly enhanced by pretreatment with IL-2. The radioprotective effect of IL-2 is dose dependent, does not result from the induction of cell proliferation, and does not require expression of the IL-2 receptor alpha chain. Thus, the beta gamma IL-2 receptor expressed on resting T cells can transduce signals that promote cell survival without committing the T cell to undergo cell division. IL-4 and IL-7, but not IL-1, IL-3, or IL-6, were also found to enhance the survival of quiescent T cells following gamma irradiation. Thus, certain growth factor-receptor interactions can serve to maintain cell viability in a manner that is independent of their ability to initiate or maintain cell proliferation. These data may have important implications for the use of growth factors in patients being treated with radiation and/or chemotherapy. FAU - Boise, L H AU - Boise LH AD - Gwen Knapp Center, Howard Hughes Medical Institute, University of Chicago, IL 60637, USA. FAU - Minn, A J AU - Minn AJ FAU - June, C H AU - June CH FAU - Lindsten, T AU - Lindsten T FAU - Thompson, C B AU - Thompson CB LA - eng GR - P01 A135294/PHS HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (BCL2L1 protein, human) RN - 0 (Interleukins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (bcl-X Protein) SB - IM MH - Apoptosis MH - Cell Division MH - Cell Survival MH - Cells, Cultured MH - Gamma Rays MH - Humans MH - Interleukins/*pharmacology MH - Lymphocyte Activation MH - Proto-Oncogene Proteins/genetics MH - Proto-Oncogene Proteins c-bcl-2 MH - T-Lymphocytes/*cytology/metabolism/radiation effects MH - bcl-X Protein PMC - PMC41721 EDAT- 1995/06/06 00:00 MHDA- 1995/06/06 00:01 PMCR- 1995/12/06 CRDT- 1995/06/06 00:00 PHST- 1995/06/06 00:00 [pubmed] PHST- 1995/06/06 00:01 [medline] PHST- 1995/06/06 00:00 [entrez] PHST- 1995/12/06 00:00 [pmc-release] AID - 10.1073/pnas.92.12.5491 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 1995 Jun 6;92(12):5491-5. doi: 10.1073/pnas.92.12.5491.