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. 1992 Jan;66(1):1-5.
doi: 10.1128/JVI.66.1.1-5.1992.

UV activation of human immunodeficiency virus gene expression in transgenic mice

J Vogel  1 , M Cepeda, E Tschachler, L A Napolitano, G Jay
Affiliations

UV activation of human immunodeficiency virus gene expression in transgenic mice

J Vogel et al. J Virol. 1992 Jan.

Abstract

Human immunodeficiency virus (HIV) infection is associated with a clinical latency of as long as 10 years before the development of disease. One explanation for this delay is the requirement of cofactors such as other DNA or RNA viruses, cytokines critical for immune modulation, or environmental UV light. At least in tissue culture studies, these agents are capable of inducing HIV gene expression in cell lines which either harbor the entire viral genome or contain a reporter gene under the control of the viral long terminal repeat regulatory region. The role of these cofactors in terminating clinical latency and inducing disease has been difficult to ascertain because of the lack of an appropriate animal model. We now report that UV light can markedly induce HIV gene expression in transgenic mice carrying both the cis-acting (long terminal repeat) and trans-acting (the tat gene) elements which are essential for viral transactivation and replication in infected cells. Our finding may explain the clinical observations that cutaneous lesions in HIV-infected individuals are often seen in the sunlight exposed areas of the skin, including the face and neck.

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