PMID- 17142732 OWN - NLM STAT- MEDLINE DCOM- 20070116 LR - 20190516 IS - 0022-1767 (Print) IS - 1550-6606 (Electronic) IS - 0022-1767 (Linking) VI - 177 IP - 12 DP - 2006 Dec 15 TI - Latent virus influences the generation and maintenance of CD8+ T cell memory. PG - 8356-64 AB - The influence of latent virus on CD8+ T cell memory is poorly understood. HSV type 1 specifically establishes latency in trigeminal ganglia (TG) after corneal infection of mice. In latently infected TG, IL-15 deprivation reduced the following: 1) accumulation of HSV-specific CD8+ effector T cells (HSV-CD8(eff)), 2) accumulation of CD127(+) putative HSV-CD8 memory precursors, and 3) the size and functionality of the memory (HSV-CD8(mem)) population. Although compromised in IL-15(-/-) mice, the HSV-CD8(mem) pool persisted in latently infected tissue, but not in noninfected tissue of the same mice. Anti-IL-2 treatment also dramatically reduced the size of the HSV-CD8(eff) population in the TG, but did not influence the concomitant generation of the CD127+ putative HSV-CD8(mem) precursor population or the size or functionality of the HSV-CD8(mem) pool. Thus, the size of the memory pool appears to be determined by the size of the CD127+ CD8(mem) precursor population and not by the size of the overall CD8(eff) pool. HSV-CD8(mem) showed a higher basal rate of proliferation in latently infected than noninfected tissue, which was associated with a reduced population of CD4+FoxP3+ regulatory T cells. Thus, the generation, maintenance, and function of memory CD8+ T cells is markedly influenced by latent virus. FAU - Sheridan, Brian S AU - Sheridan BS AD - Graduate Program in Immunology, Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA. FAU - Khanna, Kamal M AU - Khanna KM FAU - Frank, Gregory M AU - Frank GM FAU - Hendricks, Robert L AU - Hendricks RL LA - eng GR - T32 AI060525/AI/NIAID NIH HHS/United States GR - P30 EY 08098/EY/NEI NIH HHS/United States GR - R01 EY005945/EY/NEI NIH HHS/United States GR - P30 EY008098-19/EY/NEI NIH HHS/United States GR - R01 EY005945-20/EY/NEI NIH HHS/United States GR - P30 EY008098-20/EY/NEI NIH HHS/United States GR - P30 EY008098-18/EY/NEI NIH HHS/United States GR - EY 05945/EY/NEI NIH HHS/United States GR - R01 EY005945-21/EY/NEI NIH HHS/United States GR - T32 AI 060525/AI/NIAID NIH HHS/United States GR - R01 EY005945-22/EY/NEI NIH HHS/United States GR - P30 EY008098/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Interleukin-15) RN - 0 (Interleukin-2) RN - 0 (Interleukin-7 Receptor alpha Subunit) SB - IM MH - Animals MH - CD8-Positive T-Lymphocytes/cytology/*immunology/virology MH - Cell Proliferation MH - Female MH - Herpesvirus 1, Human/immunology MH - *Immunologic Memory MH - Interleukin-15 MH - Interleukin-2 MH - Interleukin-7 Receptor alpha Subunit MH - Lymphocyte Count MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Mice, Transgenic MH - Virus Latency/*immunology PMC - PMC2366996 MID - NIHMS47130 COIS- Disclosures The authors have no financial conflict of interest. EDAT- 2006/12/05 09:00 MHDA- 2007/01/17 09:00 PMCR- 2008/05/05 CRDT- 2006/12/05 09:00 PHST- 2006/12/05 09:00 [pubmed] PHST- 2007/01/17 09:00 [medline] PHST- 2006/12/05 09:00 [entrez] PHST- 2008/05/05 00:00 [pmc-release] AID - 177/12/8356 [pii] AID - 10.4049/jimmunol.177.12.8356 [doi] PST - ppublish SO - J Immunol. 2006 Dec 15;177(12):8356-64. doi: 10.4049/jimmunol.177.12.8356.