Gastrointestinal Tract as a Major Site of CD4 + T Cell Depletion and Viral Replication in SIV Infection

Author:

Veazey Ronald S.1,DeMaria MaryAnn1,Chalifoux Laura V.1,Shvetz Daniel E.1,Pauley Douglas R.1,Knight Heather L.1,Rosenzweig Michael1,Johnson R. Paul1,Desrosiers Ronald C.1,Lackner Andrew A.1

Affiliation:

1. New England Regional Primate Research Center, Harvard Medical School, 1 Pine Hill Drive, Post Office Box 9102, Southborough, MA 01772, USA.

Abstract

Human and simian immunodeficiency virus (HIV and SIV) replicate optimally in activated memory CD4 + T cells, a cell type that is abundant in the intestine. SIV infection of rhesus monkeys resulted in profound and selective depletion of CD4 + T cells in the intestine within days of infection, before any such changes in peripheral lymphoid tissues. The loss of CD4 + T cells in the intestine occurred coincident with productive infection of large numbers of mononuclear cells at this site. The intestine appears to be a major target for SIV replication and the major site of CD4 + T cell loss in early SIV infection.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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