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1996-02-27
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Document 0707
DOCN M9630707
TI Differences in the interleukin-2 (IL-2) receptor system in human and
mouse: alpha chain is required for formation of the functional mouse
IL-2 receptor.
DT 9603
AU Nemoto T; Takeshita T; Ishii N; Kondo M; Higuchi M; Satomi S; Nakamura
M; Mori S; Sugamura K; Department of Microbiology, Tohoku University
School of Medicine,; Sendai, Japan.
SO Eur J Immunol. 1995 Nov;25(11):3001-5. Unique Identifier : AIDSLINE
MED/96085167
AB Reconstitution with mouse interleukin-2 (IL-2) receptor subunits
demonstrated that the mouse IL-2 receptor complex was different from the
human complex in the alpha chain requirement for the functional mouse
receptor complex. The heterotrimeric complex of the mouse exogenous
alpha and beta chains and the endogenous gamma chain on mouse lymphoid
BW5147 cells showed the ability to bind IL-2 with high affinity,
resulting in IL-2-induced tyrosine phosphorylation of a cytosolic
tyrosine kinase, JAK3, which is involved in IL-2-dependent signals.
Exogenous introduction of the beta chain with the endogenous gamma
chain, however, could neither confer appreciable IL-2 binding nor
IL-2-induced signal transduction on BW5147 cells, unlike the human beta
gamma heterodimer. Mouse spleen CD8+ cells, not having the alpha chain
initially, showed IL-2-dependent cell proliferation only when expression
of the alpha chain was induced. Collectively, these results illustrate
that the functional mouse IL-2 receptor complex necessarily includes the
alpha chain, and that the regulation of CD8+ T cell growth during immune
reaction depends upon alpha chain expression.
DE Animal Antibodies, Monoclonal/IMMUNOLOGY Cell Line Comparative Study
CD8-Positive T-Lymphocytes/IMMUNOLOGY Female Human
Interleukin-2/METABOLISM Lymphocyte Transformation/IMMUNOLOGY Mice
Mice, Inbred BALB C Protein-Tyrosine Kinase/IMMUNOLOGY Rats Rats,
Wistar Receptors, Interleukin-2/BIOSYNTHESIS/*IMMUNOLOGY/*METABOLISM
Support, Non-U.S. Gov't Transfection JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).