Induction of cell differentiation by human immunodeficiency virus 1 vpr

David N. Levy, Laura S. Fernandes, William V. Williams, David B. Weiner

Research output: Contribution to journalArticlepeer-review


Cell lines from rhabdomyosarcomas, which are tumors of muscle origin, have been used as models of CD4-independent HIV infection. These cell lines can be induced to differentiate in vitro. We report here that the vpr gene of HIV1 is sufficient for the differentiation of the human rhabdomyosarcoma cell line TE671. Differentiated cells are characterized by great enlargement, altered morphology, lack of replication, and high level expression of the muscle-specific protein myosin. We have also observed the morphological differentiation and inhibition of proliferation of two other transformed cell lines. vpr-transfected cells remain fully viable in culture for extended periods. These observations elucidate a potential role for vpr in the virus life cycle and raise the possibility that some aspects of HIV-induced pathologies may be caused by a disturbance of cells by vpr.

Original languageEnglish (US)
Pages (from-to)541-550
Number of pages10
Issue number4
StatePublished - Feb 26 1993

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


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