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M9480145.TXT
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1994-08-09
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Document 0145
DOCN M9480145
TI Different proliferative response of human and chimpanzee lymphocytes
after contact with human immunodeficiency virus type 1 gp120.
DT 9410
AU Di Rienzo AM; Furlini G; Olivier R; Ferris S; Heeney J; Montagnier L;
Department of Retroviruses, Institut Pasteur, Paris.
SO Eur J Immunol. 1994 Jan;24(1):34-40. Unique Identifier : AIDSLINE
MED/94291738
AB T cell functional defects are a common aspect of human immunodeficiency
virus (HIV) infection. Moreover, it has been suggested that indirect
mechanisms are involved in CD4+ cell depletion. Unresponsiveness to
proliferative stimuli of lymphocytes incubated with HIV particles or
with viral proteins is well documented. Nevertheless, drawing a clear
picture of the anergy phenomenon is difficult because of several
unresolved and controversial questions. Here we report that recombinant
gp120 induces anergy in T helper lymphocytes cultured with different
stimuli. The proliferative responses to interleukin (IL)-2, IL-4, IL-6,
anti-CD2, anti-CD3 and phorbol 12-myristate 13-acetate are inhibited.
Moreover, anergic cells show a different distribution in cell cycle
phases as compared to control cells, leading us to suggest that the
progression in the cell cycle is hampered and that a pre-mitotic block
takes place. Furthermore, since chimpanzees are susceptible to HIV-1
infection without showing immunodeficiency signs, we analyzed the
proliferation of chimpanzee lymphocytes without observing anergy in
cells preincubated with gp120. Taken together, these results support the
hypothesis that anergy plays an important role in HIV infection in vivo.
DE Animal Cell Cycle/IMMUNOLOGY Chimpansee troglodytes Comparative Study
Gene Products, env/IMMUNOLOGY Human HIV Envelope Protein
gp120/*IMMUNOLOGY HIV-1/*IMMUNOLOGY Immune Tolerance Lymphocyte
Transformation/*IMMUNOLOGY Protein Precursors/IMMUNOLOGY Recombinant
Proteins/IMMUNOLOGY Species Specificity
T-Lymphocytes/IMMUNOLOGY/PHYSIOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).