The use of cyclosporine, FK506, and SDZ NIM811 to prevent CD25 quiescent peripheral blood mononuclear cells from producing human immunodeficiency virus

Jozef Borvak, Chin Sheng Chou, Gregory Van Dyke, Brigitte Rosenwirth, Ellen S. Vitetta, Octavio Ramilo

Research output: Contribution to journalArticle

13 Scopus citations


It has been shown that the combined use of two pharmacologic agents can inhibit human immunodeficiency virus (HIV) production by peripheral blood mononuclear cells in vitro. One, an anti-CD25 immunotoxin (IT), kills activated T cells that produce virus; the other, the immunosuppressive drug cyclosporine, prevents the quiescent cells, which harbor HIV, from becoming activated. The present study compares the antiviral activities of two agents, SDZ NIM811 and FK506, to that of cyclosporine. In combination with the anti- CD25 IT, these drugs significantly suppressed virus production. In the absence of prior addition of the IT, the ability of the drugs to inhibit virus production was much lower, suggesting that they work effectively in latently infected cells. In the case of SDZ NIM811, the inhibition of virus production was accompanied by a modest inhibition of cell proliferation. In contrast, FK506 exerted strong antiproliferative activity. Cyclosporine was both moderately antiproliferative and a potent antiviral agent.

Original languageEnglish (US)
Pages (from-to)850-853
Number of pages4
JournalJournal of Infectious Diseases
Issue number4
StatePublished - Jan 1 1996


ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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