Comparison of susceptibility to SIVmac239 infection between CD4 + and CD4 + 8 + T cells

Comparison of susceptibility to SIVmac239 infection between CD4 + and CD4 + 8 + T cells CD4-bearing T cells are the primary targets for human immunodeficiency virus type 1(HIV-1)/simian immunodeficiency virus (SIV) infection. However, it is unclear whether the susceptibility of CD4-bearing T cells including CD4 single positive and CD4/8 double positive T cells to HIV/SIV infection is the same or not. In this study, we compared the susceptibility to SIV infection between CD4 + and CD4 + 8 + T cells, using Herpesvirus saimiri (HVS)-transformed CD4 + and CD4 + 8 + T cells established from peripheral blood mononuclear cells (PBMC) of rhesus macaques. Although there was little difference between the two CD4-bearing T cell population in the expression level of CD4 molecules and chemokine receptors such as CXCR4 and CCR5, SIV replicated more efficiently in CD4 + 8 + T cells than in CD4 + T cells. Moreover, we found that reverse transcription initiated more efficiently in CD4 + 8 + T cells than in CD4 + T cells and that the cell lysates from CD4 + T cells impaired the RT activity more strongly than that from CD4 + 8 + T cells. These findings suggest that intracellular environment in CD4 + 8 + T cells is better for reverse transcription and that the infection of those CD4 + 8 + T cells might play critical and different roles in HIV-1/SIV infection and dissemination. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Comparison of susceptibility to SIVmac239 infection between CD4 + and CD4 + 8 + T cells

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Virology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-005-0536-7
Publisher site
See Article on Publisher Site

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