Tumor necrosis factor alpha selectively sensitizes human immunodeficiency virus-infected cells to heat and radiation

Journal Article · Wed May 15 00:00:00 EDT 1991 · Proceedings of the National Academy of Sciences of the United States of America; (USA)

DOI:https://doi.org/10.1073/pnas.88.10.4372· OSTI ID:5638874

Wong, G H; McHugh, T; Weber, R; Goeddel, D V ^[1]

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1. Genentech, Inc., South San Francisco, CA (USA)

We report here that infection of the human T-cell line HUT-78 with human immunodeficiency virus (HIV) increases its sensitivity to heat and radiation toxicity. A possible explanation for this result may be the reduced expression of manganous superoxide dismutase (MnSOD) in HIV-infected cells compared to uninfected cells. Tumor necrosis factor alpha (TNF-alpha) further sensitizes HIV-infected cells but not uninfected cells to heat and radiation. This is consistent with the ability of TNF-alpha to induce the expression of MnSOD in uninfected but not in HIV-infected cells. HIV-infected HUT-78 cell lines engineered to overexpress MnSOD are more resistant to heat and radiation than HIV-infected cells that do not overexpress MnSOD. However, treatment with TNF-alpha still sensitizes these cells to heat and radiation.

• OSTI ID: 5638874
• Journal Information: Proceedings of the National Academy of Sciences of the United States of America; (USA), Vol. 88:10; ISSN 0027-8424
• Country of Publication: United States
• Language: English

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