PMID- 10072077 OWN - NLM STAT- MEDLINE DCOM- 19990325 LR - 20190915 IS - 1074-7613 (Print) IS - 1074-7613 (Linking) VI - 10 IP - 2 DP - 1999 Feb TI - Stat5 is required for IL-2-induced cell cycle progression of peripheral T cells. PG - 249-59 AB - Many cytokines activate two highly homologous Stat proteins, 5a and 5b. Mice deficient in both genes lack all growth hormone and prolactin functions but retain functions associated with cytokines such as erythropoietin. Here, we demonstrate that, while lymphoid development is normal, Stat5a/b mutant peripheral T cells are profoundly deficient in proliferation and fail to undergo cell cycle progression or to express genes controlling cell cycle progression. In addition, the mice lack NK cells, develop splenomegaly, and have T cells with an activated phenotype, phenotypes seen in IL-2 receptor beta chain-deficient mice. These phenotypes are not seen in mice lacking Stat5a or Stat5b alone. The results demonstrate that the Stat5 proteins, redundantly, are essential mediators of IL-2 signaling in T cells. FAU - Moriggl, R AU - Moriggl R AD - Howard Hughes Medical Institute, and Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. FAU - Topham, D J AU - Topham DJ FAU - Teglund, S AU - Teglund S FAU - Sexl, V AU - Sexl V FAU - McKay, C AU - McKay C FAU - Wang, D AU - Wang D FAU - Hoffmeyer, A AU - Hoffmeyer A FAU - van Deursen, J AU - van Deursen J FAU - Sangster, M Y AU - Sangster MY FAU - Bunting, K D AU - Bunting KD FAU - Grosveld, G C AU - Grosveld GC FAU - Ihle, J N AU - Ihle JN LA - eng GR - CA21765/CA/NCI NIH HHS/United States GR - P01 HL53749/HL/NHLBI NIH HHS/United States GR - R01 DK42932/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (DNA-Binding Proteins) RN - 0 (Interleukin-2) RN - 0 (Milk Proteins) RN - 0 (STAT5 Transcription Factor) RN - 0 (Stat5a protein, mouse) RN - 0 (Stat5b protein, mouse) RN - 0 (Trans-Activators) SB - IM MH - Animals MH - Cell Cycle/*physiology MH - Cell Division MH - Cells, Cultured MH - DNA-Binding Proteins/*physiology MH - Flow Cytometry MH - Interleukin-2/*physiology MH - Mice MH - Mice, Mutant Strains MH - *Milk Proteins MH - STAT5 Transcription Factor MH - T-Lymphocytes/*cytology MH - Thymus Gland/cytology/metabolism MH - Trans-Activators/*physiology EDAT- 1999/03/11 00:00 MHDA- 1999/03/11 00:01 CRDT- 1999/03/11 00:00 PHST- 1999/03/11 00:00 [pubmed] PHST- 1999/03/11 00:01 [medline] PHST- 1999/03/11 00:00 [entrez] AID - S1074-7613(00)80025-4 [pii] AID - 10.1016/s1074-7613(00)80025-4 [doi] PST - ppublish SO - Immunity. 1999 Feb;10(2):249-59. doi: 10.1016/s1074-7613(00)80025-4.