The Journal of Immunology, Vol 138, Issue 10 3415-3418, Copyright © 1987 by American Association of Immunologists

ARTICLES

Differential ability of human immunodeficiency virus isolates to productively infect human cells

LA Evans, TM McHugh, DP Stites and JA Levy

Isolates of HIV showed distinct differences in the ability to replicate in continuous human hematopoietic cell lines. Moreover, although all PMC cultures obtained from healthy individuals could be infected with HIV, considerable variation in the amount of virus released from different PMC cultures was observed. These biological properties of HIV could not be correlated with clinical state, binding properties of the virus isolates to target cells, or differences in target cell CD4 antigen expression. Some isolates of HIV that could not directly infect the HUT-78 cell line showed productive infection when PMC infected with these viruses were added to this human T cell line. These observations emphasize the importance of cell to cell contact in the spread of virus. The results demonstrate for the first time the differences in the host range specificity of HIV isolates in several individual PMC cultures, and indicate that the optimal isolation of HIV is achieved with normal human PMC rather than established human cell lines.

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