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    The interaction of macrophage and non-macrophage tropic isolates of HIV-1 with thymic and tonsillar dendritic cells in vitro

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    Author
    Cameron, PU; Lowe, MG; Sotzik, F; Coughlan, AF; Crowe, SM; Shortman, K
    Date
    1996-04-01
    Source Title
    Journal of Experimental Medicine
    Publisher
    ROCKEFELLER UNIV PRESS
    University of Melbourne Author/s
    Cameron, Paul
    Affiliation
    Doherty Institute
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Cameron, P. U., Lowe, M. G., Sotzik, F., Coughlan, A. F., Crowe, S. M. & Shortman, K. (1996). The interaction of macrophage and non-macrophage tropic isolates of HIV-1 with thymic and tonsillar dendritic cells in vitro. JOURNAL OF EXPERIMENTAL MEDICINE, 183 (4), pp.1851-1856. https://doi.org/10.1084/jem.183.4.1851.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/258439
    DOI
    10.1084/jem.183.4.1851
    Abstract
    Dendritic cells isolated from thymus and tonsil were tested for susceptibility to HIV-1 strains that are tropic for macrophages or for T cell lines. DCs were purified by cell sorting and before infection expressed high levels of CD4 and HLA-DR and lacked markers for T, B, NK cells, or macrophages. Viral entry and reverse transcription was found after pulsing with strains of HIV-1 that could infect macrophages. During the first 36 h the PCR signals for gag sequences increased in DCs and macrophages. In contrast little if any viral DNA was found after pulsing macrophages or DCs with HIV-1 that was able to infect T cell lines. DCs pulsed with HIV-1 were able to transmit infection to responding T cells during an allogeneic or superantigen response. Selection for virus able to infect lymphoid DCs and other DCs expressing CD4 and its transfer to T cells during subsequent immune responses may provide a mechanism for the observed predominance of macrophage-tropic HIV-1 after in vivo transmission.

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