home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Arsenal Files 6
/
The Arsenal Files 6 (Arsenal Computer).ISO
/
health
/
med9603.zip
/
M9630477.TXT
< prev
next >
Wrap
Text File
|
1996-02-27
|
2KB
|
35 lines
Document 0477
DOCN M9630477
TI Selection of TCR V alpha by MHC class II predicts superantigen
reactivity.
DT 9603
AU Alam SM; Sim BC; Gascoigne NR; Department of Immunology, Scripps
Research Institute, La Jolla,; CA 92037, USA.
SO Int Immunol. 1995 Aug;7(8):1311-8. Unique Identifier : AIDSLINE
MED/96022653
AB Recognition of superantigens by T cells predominantly involves the TCR V
beta region. The contribution of reactivity from the non-V beta portion
of the TCR remains less clear. We have investigated the V alpha
repertoire of T cells bearing one V beta element responding to different
superantigen or polyclonal stimuli. The data indicate that the V alpha
chain is not directly involved in superantigen recognition, since
unrelated superantigens do not stimulate cells bearing different V alpha
elements. Instead, analysis of V alpha elements used preferentially in
the CD4+ or CD8+ cells, shows that the V alpha-regions predominating in
the superantigen response are the same V alphas that are positively
selected into the CD4+ lineage. Thus the ability of a V alpha-region to
either aid or hinder the interaction with class II predicts its
frequency in a superantigen-responding population of T cells.
DE Animal Antigens, Viral/PHARMACOLOGY CD4-Positive
T-Lymphocytes/IMMUNOLOGY CD8-Positive T-Lymphocytes/IMMUNOLOGY
Enterotoxins/PHARMACOLOGY Genes, MHC Class II/*IMMUNOLOGY Lymphocyte
Transformation Mice Mice, Inbred BALB C Mice, Inbred C57BL Mice,
Transgenic Receptors, Antigen, T-Cell, alpha-beta/*IMMUNOLOGY
Retroviridae/IMMUNOLOGY Staphylococcus aureus/IMMUNOLOGY
Superantigens/GENETICS/*PHARMACOLOGY Support, Non-U.S. Gov't Support,
U.S. Gov't, P.H.S. JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).