PMID- 17159149 OWN - NLM STAT- MEDLINE DCOM- 20070302 LR - 20181113 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 103 IP - 51 DP - 2006 Dec 19 TI - Delay of T cell senescence by caloric restriction in aged long-lived nonhuman primates. PG - 19448-53 AB - Caloric restriction (CR) has long been known to increase median and maximal lifespans and to decreases mortality and morbidity in short-lived animal models, likely by altering fundamental biological processes that regulate aging and longevity. In rodents, CR was reported to delay the aging of the immune system (immune senescence), which is believed to be largely responsible for a dramatic increase in age-related susceptibility to infectious diseases. However, it is unclear whether CR can exert similar effects in long-lived organisms. Previous studies involving 2- to 4-year CR treatment of long-lived primates failed to find a CR effect or reported effects on the immune system opposite to those seen in CR-treated rodents. Here we show that long-term CR delays the adverse effects of aging on nonhuman primate T cells. CR effected a marked improvement in the maintenance and/or production of naive T cells and the consequent preservation of T cell receptor repertoire diversity. Furthermore, CR also improved T cell function and reduced production of inflammatory cytokines by memory T cells. Our results provide evidence that CR can delay immune senescence in nonhuman primates, potentially contributing to an extended lifespan by reducing susceptibility to infectious disease. FAU - Messaoudi, Ilhem AU - Messaoudi I AD - Vaccine and Gene Therapy Institute and Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA. FAU - Warner, Jessica AU - Warner J FAU - Fischer, Miranda AU - Fischer M FAU - Park, Buyng AU - Park B FAU - Hill, Brenna AU - Hill B FAU - Mattison, Julie AU - Mattison J FAU - Lane, Mark A AU - Lane MA FAU - Roth, George S AU - Roth GS FAU - Ingram, Donald K AU - Ingram DK FAU - Picker, Louis J AU - Picker LJ FAU - Douek, Daniel C AU - Douek DC FAU - Mori, Motomi AU - Mori M FAU - Nikolich-Zugich, Janko AU - Nikolich-Zugich J LA - eng GR - AG21384/AG/NIA NIH HHS/United States GR - P51 RR000163/RR/NCRR NIH HHS/United States GR - U01 AG021384/AG/NIA NIH HHS/United States GR - T32 AI007472/AI/NIAID NIH HHS/United States GR - Intramural NIH HHS/United States GR - K01 RR000163/RR/NCRR NIH HHS/United States GR - RR0163/RR/NCRR NIH HHS/United States GR - 5T32 AI0077472-10/AI/NIAID NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural DEP - 20061211 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 (Cytokines) RN - 0 (Receptors, Antigen, T-Cell) SB - IM MH - Age Factors MH - Animals MH - *Caloric Restriction MH - Cell Count MH - Cellular Senescence/immunology/*physiology MH - Cytokines/metabolism MH - Flow Cytometry MH - Macaca mulatta MH - Receptors, Antigen, T-Cell/metabolism MH - T-Lymphocytes/immunology/*physiology PMC - PMC1748246 COIS- The authors declare no conflict of interest. EDAT- 2006/12/13 09:00 MHDA- 2007/03/03 09:00 PMCR- 2007/06/19 CRDT- 2006/12/13 09:00 PHST- 2006/12/13 09:00 [pubmed] PHST- 2007/03/03 09:00 [medline] PHST- 2006/12/13 09:00 [entrez] PHST- 2007/06/19 00:00 [pmc-release] AID - 0606661103 [pii] AID - 4377 [pii] AID - 10.1073/pnas.0606661103 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19448-53. doi: 10.1073/pnas.0606661103. Epub 2006 Dec 11.