Publication Date:
1993-09-17
Description:
The CD8 alpha cytoplasmic domain associates with p56lck, a nonreceptor protein-tyrosine kinase. The biological relevance of CD8 alpha-Lck association in T cell development was tested with transgenic mice generated to express a CD8 alpha molecule with two amino acid substitutions in its cytoplasmic domain, which abolishes the association of CD8 alpha with Lck. The CD8 alpha mutant was analyzed in a CD8-/- background and in the context of the transgenic 2C T cell receptor. The development and function of CD8+ T cells in these mice were apparently normal. Thus, CD8 alpha-Lck association is not necessary for positive selection, negative selection, or CD8-dependent cytotoxic function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, I T -- Limmer, A -- Louie, M C -- Bullock, E D -- Fung-Leung, W P -- Mak, T W -- Loh, D Y -- AI 155322-13/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 17;261(5128):1581-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Medicine, Genetics, and Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8372352" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Antigens, CD4/metabolism
;
Antigens, CD8/immunology/*metabolism
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*Cytotoxicity, Immunologic
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Female
;
Genes, MHC Class I
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Lymphocyte Culture Test, Mixed
;
Lymphocyte Specific Protein Tyrosine Kinase p56(lck)
;
Male
;
Mice
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Mice, Inbred BALB C
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Mice, Inbred C3H
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Mice, Inbred C57BL
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Mice, Transgenic
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Mutation
;
Phosphorylation
;
Protein-Tyrosine Kinases/*metabolism
;
Receptors, Antigen, T-Cell
;
T-Lymphocytes, Cytotoxic/*immunology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
