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M9650223.TXT
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1996-03-09
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Document 0223
DOCN M9650223
TI Mitogenic effect of HIV-infected human T cell lines on mouse B cells
mediated by surface immunoglobulin.
DT 9605
AU Arase N; Arase H; Ohki K; Nishino Y; Ikuta K; Onoe K; Section of
Pathology, Hokkaido University, Sapporo, Japan.
SO Clin Exp Immunol. 1996 Jan;103(1):24-9. Unique Identifier : AIDSLINE
MED/96150277
AB Following HIV-1 infection, a number of disorders are induced in both
normal T and B cells by virus products derived from infected CD4+ T
cells. In the present study, we found that HIV-infected, but not
uninfected, human T cell lines generated vigorous blastogenesis and
proliferation of freshly isolated mouse B cells in a short-term culture.
Neither human B cells nor rat B cells showed significant responses to
the HIV-infected T cell lines in the present condition. The mitogenic
effect of HIV-infected human T cell line requires direct cell-cell
interaction between mouse B cells and HIV-infected T cell lines. Since
either mitomycin c treatment or paraformaldehyde fixation of
HIV-infected T cell lines resulted in complete loss of the mitogenic
effect, it seems that de novo synthesized viral products are responsible
for this effect. Furthermore, anti-mouse immunoglobulin antibody
inhibited completely the B cell stimulation by the HIV-infected human T
cell lines. Thus, surface immunoglobulin (sIg) on mouse B cells appears
to be an essential molecule which transduces activation signals from
HIV-infected human T cells into cytoplasm of the B cells.
DE Animal B-Lymphocytes/IMMUNOLOGY/*VIROLOGY Cell Communication/DRUG
EFFECTS/IMMUNOLOGY Human HIV-1/*IMMUNOLOGY Immunoglobulins,
Surface/*PHARMACOLOGY Leukemia, T-Cell *Lymphocyte Transformation/DRUG
EFFECTS Mice Mice, Inbred C57BL Mitosis/DRUG EFFECTS/*IMMUNOLOGY
Support, Non-U.S. Gov't T-Lymphocytes/IMMUNOLOGY/*VIROLOGY Tumor
Cells, Cultured JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).