Administration of an Anti-CD8 Monoclonal Antibody Interferes with the Clearance of Chimeric Simian/Human Immunodeficiency Virus during Primary Infections of Rhesus Macaques

Author:

Matano Tetsuro1,Shibata Riri1,Siemon Christine1,Connors Mark2,Lane H. Clifford2,Martin Malcolm A.1

Affiliation:

1. Laboratory of Molecular Microbiology1 and

2. Laboratory of Immunoregulation,2 National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892-0460

Abstract

ABSTRACT Parenteral administration of a mouse anti-human CD8 monoclonal antibody (MAb) to rhesus macaques resulted in a transient depletion of CD8 + cells in both the peripheral blood and lymphoid tissues. When administered during primary chimeric simian/human immunodeficiency virus infections, the CD8 MAb caused marked elevations of plasma and cell-associated virus levels in both the peripheral blood and lymphoid tissues and led to prolonged depletion of CD4 cells. Taken together, these results directly demonstrate that CD8 + T lymphocytes are actively involved in controlling the acute phase of primate lentivirus infections.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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