PMID- 30282707 OWN - NLM STAT- MEDLINE DCOM- 20190830 LR - 20190830 IS - 1098-5514 (Electronic) IS - 0022-538X (Print) IS - 0022-538X (Linking) VI - 92 IP - 24 DP - 2018 Dec 15 TI - Herpes Simplex Virus 1 Latency and the Kinetics of Reactivation Are Regulated by a Complex Network of Interactions between the Herpesvirus Entry Mediator, Its Ligands (gD, BTLA, LIGHT, and CD160), and the Latency-Associated Transcript. LID - 10.1128/JVI.01451-18 [doi] LID - e01451-18 AB - Recently, we reported that the herpesvirus entry mediator (HVEM; also called TNFRSF14 or CD270) is upregulated by the latency-associated transcript (LAT) of herpes simplex virus 1 (HSV-1) and that the absence of HVEM affects latency reactivation but not primary infection in ocularly infected mice. gD has been shown to bind to HVEM. LIGHT (TNFSF14), CD160, and BTLA (B- and T-lymphocyte attenuator) also interact with HVEM and can interfere with HSV gD binding. It was not known if LIGHT, CD160, or BTLA affected the level of latency reactivation in the trigeminal ganglia (TG) of latently infected mice. To address this issue, we ocularly infected LIGHT(-/-), CD160(-/-), and BTLA(-/-) mice with LAT(+) and LAT(-) viruses, using similarly infected wild-type (WT) and HVEM(-/-) mice as controls. The amount of latency, as determined by the levels of gB DNA in the TG of the LIGHT(-/-), CD160(-/-), and BTLA(-/-) mice infected with either LAT(+) or LAT(-) viruses, was lower than that in WT mice infected with LAT(+) virus and was similar in WT mice infected with LAT(-) virus. The levels of LAT RNA in HVEM(-/-), LIGHT(-/-), CD160(-/-), and BTLA(-/-) mice infected with LAT(+) virus were similar and were lower than the levels of LAT RNA in WT mice. However, LIGHT(-/-), CD160(-/-), and BTLA(-/-) mice, independent of the presence of LAT, had levels of reactivation similar to those of WT mice infected with LAT(+) virus. Faster reactivation correlated with the upregulation of HVEM transcript. The LIGHT(-/-), CD160(-/-), and BTLA(-/-) mice had higher levels of HVEM expression, and this, along with the absence of BTLA, LIGHT, or CD160, may contribute to faster reactivation, while the absence of each molecule, independent of LAT, may have contributed to lower latency. This study suggests that, in the absence of competition with gD for binding to HVEM, LAT RNA is important for WT levels of latency but not for WT levels of reactivation.IMPORTANCE The effects of BTLA, LIGHT, and CD160 on latency reactivation are not known. We show here that in BTLA, LIGHT, or CD160 null mice, latency is reduced; however, HVEM expression is upregulated compared to that of WT mice, and this upregulation is associated with higher reactivation that is independent of LAT but dependent on gD expression. Thus, one of the mechanisms by which BTLA, LIGHT, and CD160 null mice enhance reactivation appears to be the increased expression of HVEM in the presence of gD. Thus, our results suggest that blockade of HVEM-LIGHT-BTLA-CD160 contributes to reduced HSV-1 latency and reactivation. CI - Copyright (c) 2018 American Society for Microbiology. FAU - Wang, Shaohui AU - Wang S AD - Center for Neurobiology and Vaccine Development, Department of Surgery, Cedars Sinai Medical Center, Los Angeles, California, USA. FAU - Ljubimov, Alexander V AU - Ljubimov AV AD - Eye Program, Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center and David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA. FAU - Jin, Ling AU - Jin L AD - Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, Oregon, USA. FAU - Pfeffer, Klaus AU - Pfeffer K AD - Institute of Medical Microbiology, University of Dusseldorf, Dusseldorf, Germany. FAU - Kronenberg, Mitchell AU - Kronenberg M AD - La Jolla Institute for Allergy and Immunology, La Jolla, California, USA. AD - University of California-San Diego, La Jolla, California, USA. FAU - Ghiasi, Homayon AU - Ghiasi H AD - Center for Neurobiology and Vaccine Development, Department of Surgery, Cedars Sinai Medical Center, Los Angeles, California, USA ghiasih@cshs.org. LA - eng GR - R01 EY013615/EY/NEI NIH HHS/United States GR - R01 EY029160/EY/NEI NIH HHS/United States GR - U01 AI125955/AI/NIAID NIH HHS/United States GR - P01 DK046763/DK/NIDDK NIH HHS/United States GR - R01 EY026944/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20181127 PL - United States TA - J Virol JT - Journal of virology JID - 0113724 RN - 0 (Antigens, CD) RN - 0 (BTLA protein, mouse) RN - 0 (Cd160 protein, mouse) RN - 0 (GPI-Linked Proteins) RN - 0 (MicroRNAs) RN - 0 (Receptors, Immunologic) RN - 0 (Receptors, Tumor Necrosis Factor, Member 14) RN - 0 (Tnfrsf14 protein, mouse) RN - 0 (Tnfsf14 protein, mouse) RN - 0 (Tumor Necrosis Factor Ligand Superfamily Member 14) RN - 0 (Viral Envelope Proteins) RN - 0 (glycoprotein D, Human herpesvirus 1) RN - 0 (latency associated transcript, herpes simplex virus-1) SB - IM MH - Animals MH - Antigens, CD/*genetics MH - Eye Diseases/genetics/*virology MH - Female MH - GPI-Linked Proteins/genetics MH - Gene Knockout Techniques MH - Herpes Simplex/*genetics/virology MH - Herpesvirus 1, Human/*physiology MH - Kinetics MH - Male MH - Mice MH - MicroRNAs/*genetics MH - Receptors, Immunologic/*genetics MH - Receptors, Tumor Necrosis Factor, Member 14/genetics MH - Tumor Necrosis Factor Ligand Superfamily Member 14/*genetics MH - Viral Envelope Proteins/genetics MH - Virus Internalization MH - Virus Latency MH - Virus Replication PMC - PMC6258941 OTO - NOTNLM OT - corneal scarring OT - eye diseases OT - latency OT - ocular OT - reactivation OT - virus replication EDAT- 2018/10/05 06:00 MHDA- 2019/08/31 06:00 PMCR- 2019/05/27 CRDT- 2018/10/05 06:00 PHST- 2018/08/22 00:00 [received] PHST- 2018/09/25 00:00 [accepted] PHST- 2018/10/05 06:00 [pubmed] PHST- 2019/08/31 06:00 [medline] PHST- 2018/10/05 06:00 [entrez] PHST- 2019/05/27 00:00 [pmc-release] AID - JVI.01451-18 [pii] AID - JVI01451-18 [pii] AID - 10.1128/JVI.01451-18 [doi] PST - epublish SO - J Virol. 2018 Nov 27;92(24):e01451-18. doi: 10.1128/JVI.01451-18. Print 2018 Dec 15.