PMID- 23878317 OWN - NLM STAT- MEDLINE DCOM- 20131106 LR - 20211021 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 191 IP - 5 DP - 2013 Sep 1 TI - Broadening the repertoire of functional herpes simplex virus type 1-specific CD8+ T cells reduces viral reactivation from latency in sensory ganglia. PG - 2258-65 LID - 10.4049/jimmunol.1300585 [doi] AB - A large proportion of the world population harbors HSV type 1 (HSV-1) in a latent state in their trigeminal ganglia (TG). TG-resident CD8(+) T cells appear important for preventing HSV-1 reactivation from latency and recurrent herpetic disease. In C57BL/6J mice, half of these cells are specific for an immunodominant epitope on HSV-1 glycoprotein B, whereas the other half are specific for 18 subdominant epitopes. In this study, we show that the CD8(+) T cell dominance hierarchy in the TG established during acute infection is maintained during latency. However, CD8(+) T cells specific for subdominant epitopes lose functionality, whereas those specific for the immunodominant epitope exhibit increased functionality in latently infected TG. Furthermore, we show that IL-10 produced by 16.4 +/- 2.8% of TG-resident CD4(+) T cells maintains the immunodominance hierarchy in part through selective inhibition of subdominant CD8(+) T cell proliferation. Upon systemic anti-IL-10R Ab treatment, we observed a significant expansion of functional subdominant CD8(+) T cells, resulting in significantly improved protection from viral reactivation. In fact, systemic anti-IL-10R Ab treatment prevented viral reactivation in up to 50% of treated mice. Our results not only demonstrate that HSV-1 reactivation from latency can be prevented by expanding the repertoire of functional TG-resident CD8(+) T cells, but also that IL-10R blockade might have therapeutic potential to reduce or eliminate recurrent herpetic disease. FAU - St Leger, Anthony J AU - St Leger AJ AD - Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA. FAU - Jeon, Sohyun AU - Jeon S FAU - Hendricks, Robert L AU - Hendricks RL LA - eng GR - P30 EY001792/EY/NEI NIH HHS/United States GR - R01 EY005945/EY/NEI NIH HHS/United States GR - R01-EY005945/EY/NEI NIH HHS/United States GR - P30-EY08098/EY/NEI NIH HHS/United States GR - R01 EY010359/EY/NEI NIH HHS/United States GR - T32-EY017271/EY/NEI NIH HHS/United States GR - T32 EY017271/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 DEP - 20130722 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Immunodominant Epitopes) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Animals MH - CD4-Positive T-Lymphocytes/immunology/virology MH - CD8-Positive T-Lymphocytes/*immunology/virology MH - Disease Models, Animal MH - Epitopes, T-Lymphocyte/immunology MH - Female MH - Flow Cytometry MH - Ganglia, Sensory/immunology/*virology MH - Herpes Simplex/*immunology MH - Herpesvirus 1, Human/physiology MH - Immunodominant Epitopes/immunology MH - Interleukin-10/immunology MH - Lymphocyte Activation/immunology MH - Mice MH - Mice, Inbred C57BL MH - Virus Activation/*immunology MH - Virus Latency/*immunology PMC - PMC3779892 MID - NIHMS500094 EDAT- 2013/07/24 06:00 MHDA- 2013/11/07 06:00 PMCR- 2014/09/01 CRDT- 2013/07/24 06:00 PHST- 2013/07/24 06:00 [entrez] PHST- 2013/07/24 06:00 [pubmed] PHST- 2013/11/07 06:00 [medline] PHST- 2014/09/01 00:00 [pmc-release] AID - jimmunol.1300585 [pii] AID - 10.4049/jimmunol.1300585 [doi] PST - ppublish SO - J Immunol. 2013 Sep 1;191(5):2258-65. doi: 10.4049/jimmunol.1300585. Epub 2013 Jul 22.