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M9630598.TXT
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1996-02-27
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Document 0598
DOCN M9630598
TI Acutely infected Langerhans cells are more efficient than T cells in
disseminating HIV type 1 to activated T cells following a short
cell-cell contact.
DT 9603
AU Ayehunie S; Groves RW; Bruzzese AM; Ruprecht RM; Kupper TS; Langhoff E;
Laboratory of Viral Pathogenesis, Dana-Farber Cancer Institute,; Boston,
Massachusetts 02115, USA.
SO AIDS Res Hum Retroviruses. 1995 Aug;11(8):877-84. Unique Identifier :
AIDSLINE MED/96020088
AB Most human immunodeficiency virus type 1 (HIV-1) infections involve
sexual contact and virus passage across mucosal surfaces. While
Langerhans cells (LCs) and dendritic cells (DCs) have been implicated in
mucosal infection, their role is undefined. Here we demonstrate that
acutely HIV-1-infected LCs and DCs effectively transmit virus to
uninfected, activated T cells. Cocultivation of these cells results in
massive virus production that requires a short cell-cell contact; as
little as 30 min contact time is sufficient for HIV-1-pulsed DCs to
infect their target T cells. Furthermore, surface-bound virus
inactivation by trypsin does not significantly decrease the efficiency
of virus transmission by LC/DCs, suggesting rapid internalization of
virus. This effective virus transfer by infected LCs and blood-derived
DCs requires prior activation of T cells. Surprisingly, cocultivation of
acutely infected T cells with uninfected, activated target T cells
results only in low virus production, even with T cell-tropic virus. We
conclude that LCs and DCs are not only important targets of HIV-1
infection, but may also play a key role in the early dissemination of
virus to T cells they encounter in skin or lymphoid tissue.
DE Cells, Cultured Coculture Dendritic Cells/IMMUNOLOGY/*VIROLOGY Human
HIV Infections/IMMUNOLOGY/PATHOLOGY/*VIROLOGY HIV-1/*PHYSIOLOGY
Langerhans Cells/IMMUNOLOGY/*VIROLOGY Lymphocyte Transformation
Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S.
T-Lymphocytes/*IMMUNOLOGY/VIROLOGY Virus Integration JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).