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1996-02-26
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Document 0637
DOCN M9620637
TI Human naive CD4 T cells produce interleukin-4 at priming and acquire a
Th2 phenotype upon repetitive stimulations in neutral conditions.
DT 9602
AU Demeure CE; Yang LP; Byun DG; Ishihara H; Vezzio N; Delespesse G;
University of Montreal, Louis-Charles Simard Research Center,;
Notre-Dame Hospital, Canada.
SO Eur J Immunol. 1995 Sep;25(9):2722-5. Unique Identifier : AIDSLINE
MED/96011894
AB The maturation of naive CD4 T cells into interleukin (IL)-4-producing
effectors was shown to require the presence of IL-4 at priming, the
cellular origin of which remains unclear. We demonstrate here that naive
T cells themselves release IL-4 at very low levels that are nevertheless
sufficient to promote their development into Th2-like cells. This
conclusion is based on three observations: (1) highly purified human
naive CD4 T cells, of neonatal or adult origin, develop into Th2
effectors upon repetitive cycles of stimulation with anti-CD3 monoclonal
antibody (mAb) cross-linked to CD32-B7 transfected L fibroblasts
followed by IL-2 expansion; (2) IL-4 protein is readily detectable in
the concentrated supernatant fluids of priming cultures performed in the
presence of anti-IL-4 receptor mAb; and (3) addition of anti-IL-4 or
anti-IL-4 receptor mAb at priming markedly inhibits the acquisition of
IL-4- and IL-5-producing capacity while enhancing that of
interferon-gamma.
DE Adult Cell Differentiation/DRUG EFFECTS Cells, Cultured CD4-Positive
T-Lymphocytes/CYTOLOGY/*IMMUNOLOGY Human
Interleukin-4/*BIOSYNTHESIS/PHARMACOLOGY Support, Non-U.S. Gov't Th2
Cells/CYTOLOGY/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).