| Literature DB >> 2784570 |
T M Folks1, K A Clouse, J Justement, A Rabson, E Duh, J H Kehrl, A S Fauci.
Abstract
Tumor necrosis factor alpha (TNF-alpha), also known as cachectin, was demonstrated to induce the expression of human immunodeficiency virus (HIV) in a chronically infected T-cell clone (ACH-2). Concentrations of recombinant TNF-alpha as low as 50 pg/ml induced a significant increase over background of HIV expression in the ACH-2 cells as determined by supernatant reverse transcriptase activity. The HIV-inducing effects of TNF-alpha could not be explained by toxic effects on the cells. In addition, both the uninfected parental cell line (A3.01) and the infected ACH-2 cells were shown to have high-affinity receptors for TNF-alpha. Transient-transfection experiments demonstrated that the inductive effects of TNF-alpha were due to specific activation of the HIV long terminal repeat. These studies provide evidence that TNF-alpha may play a role in the mechanisms of pathogenesis of HIV infection.Entities:
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Year: 1989 PMID: 2784570 PMCID: PMC286913 DOI: 10.1073/pnas.86.7.2365
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205