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Journal of Virology, December 1998, p. 9567-9574, Vol. 72, No. 12
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Immunization with a Single Major Histocompatibility Complex Class I-Restricted Cytotoxic T-Lymphocyte Recognition Epitope of Herpes Simplex Virus Type 2 Confers Protective Immunity

Joseph E. Blaney Jr.,1 Eri Nobusawa,2,dagger Michael A. Brehm,1 Robert H. Bonneau,1 Lawrence M. Mylin,1 Tong-Ming Fu,1,Dagger Yoshihiro Kawaoka,2 and Satvir S. Tevethia1,*

Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033,1 and Department of Pathobiological Sciences, University of Wisconsin, Madison, Wisconsin 537062

Received 27 May 1998/Accepted 25 August 1998

We have evaluated the potential of conferring protective immunity to herpes simplex virus type 2 (HSV-2) by selectively inducing an HSV-specific CD8+ cytotoxic T-lymphocyte (CTL) response directed against a single major histocompatibility complex class I-restricted CTL recognition epitope. We generated a recombinant vaccinia virus (rVV-ES-gB498-505) which expresses the H-2Kb-restricted, HSV-1/2-cross-reactive CTL recognition epitope, HSV glycoprotein B residues 498 to 505 (SSIEFARL) (gB498-505), fused to the adenovirus type 5 E3/19K endoplasmic reticulum insertion sequence (ES). Mucosal immunization of C57BL/6 mice with this recombinant vaccinia virus induced both a primary CTL response in the draining lymph nodes and a splenic memory CTL response directed against HSV gB498-505. To determine the ability of the gB498-505-specific memory CTL response to provide protection from HSV infection, immunized mice were challenged with a lethal dose of HSV-2 strain 186 by the intranasal (i.n.) route. Development of the gB498-505-specific CTL response conferred resistance in 60 to 75% of mice challenged with a lethal dose of HSV-2 and significantly reduced the levels of infectious virus in the brains and trigeminal ganglia of challenged mice. Finally, i.n. immunization of C57BL/6 mice with either a recombinant influenza virus or a recombinant vaccinia virus expressing HSV gB498-505 without the ES was also demonstrated to induce an HSV-specific CTL response and provide protection from HSV infection. This finding confirms that the induction of an HSV-specific CTL response directed against a single epitope is sufficient for conferring protective immunity to HSV. Our findings support the role of CD8+ T cells in the control of HSV infection of the central nervous system and suggest the potential importance of eliciting HSV-specific mucosal CD8+ CTL in HSV vaccine design.


* Corresponding author. Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, 500 University Dr., Hershey, PA 17033. Phone: (717) 531-8872. Fax: (717) 531-6522. E-mail: sst1{at}psu.edu.

dagger Present address: Department of Virology, Nagoya City University Medical School, Mizuho-ku, Mizuho-cho, Nagoya, Japan.

Dagger Present address: Department of Virus and Cell Biology, Merck Research Laboratories, West Point, PA 19486.


Journal of Virology, December 1998, p. 9567-9574, Vol. 72, No. 12
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.



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Copyright © 1998 by the American Society for Microbiology. All rights reserved.