BST-2/tetherin: A new component of the innate immune response to enveloped viruses

David T. Evans, Ruth Serra-Moreno, Rajendra K. Singh, John C. Guatelli

Research output: Contribution to journalReview articlepeer-review

160 Scopus citations


The interferon-inducible, transmembrane protein BST-2 (CD317, tetherin) directly holds fully formed enveloped virus particles to the cells that produce them, inhibiting their spread. BST-2 inhibits members of the retrovirus, filovirus, arenavirus and herpesvirus families. These viruses encode a variety of proteins to degrade BST-2 and/or direct it away from its site of action at the cell surface. Viral antagonism has subjected BST-2 to positive selection, leading to species-specific differences that presented a barrier to the transmission of simian immunodeficiency viruses (SIVs) to humans. This barrier was crossed by HIV-1 when its Vpu protein acquired activity as a BST-2 antagonist. Here, we review this new host-pathogen relationship and discuss its impact on the evolution of primate lentiviruses and the origins of the HIV pandemic.

Original languageEnglish
Pages (from-to)388-396
Number of pages9
JournalTrends in Microbiology
Issue number9
StatePublished - Sep 2010


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