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Vincendeau, M. ; Schreml, J.* ; Seifarth, W.* ; Frank, O.* ; Kramer, S. ; Brack-Werner, R. ; Leib-Mösch, C.

HIV-1 infection increases the expression of several HERV families.

Vortrag: FASEB Summer Research Conference Mobile Elements in Mammalian Genomes, 05-10 July 2009, Colorado, USA. (2009)
Approximately 8-9% of the human genome is composed of endogenous retroviral elements (HERVs). There is some evidence that HERVs may contribute to pathogenic conditions such as cancer, autoimmune diseases, and neurological disorders. Although most HERVs are silenced they may be reactivated by environmental influences. To examine the effect of exogenous viruses such as HIV-1 on the transcriptional activity of HERVs we used a retrovirus pol  specific microarray. We compared the HERV expression profiles of three chronically HIV-1 infected cell lines (T-cells, epithelial cells and astrocytes) that di fer in their levels of virus production. Several HERV elements belonging to class I and II HERV families were found to be upregulated in these cell lines. Real-Time PCR analysis confirmed these data. After treatment with HIV-1 specific siRNAs the expression of the HERV elements was decreased. Our data demonstrate that HIV protein expression leads to alterations in HERV transcriptional activity patterns in human cells of different origin. Furthermore these results suggest a correlation between activation of HERVelements and HIV-productivity in infected cells.
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Publication type Other: Lecture
Conference Title FASEB Summer Research Conference Mobile Elements in Mammalian Genomes
Conference Date 05-10 July 2009
Conference Location Colorado, USA
Institute(s) Institute of Virology (VIRO)