To characterize the function of the Ly-6A antigen in T cell activation, antisense Ly-6 RNA was expressed in a stably transfected antigen-specific T cell clone. Reduced Ly-6A expression results in inhibition of responses to antigen, anti-TCR (anti-T cell receptor) crosslinking and concanavalin A plus recombinant interleukin 1 and causes impairment of in vitro fyn tyrosine kinase activity. More substantial reduction of Ly-6A results in reduction of TCR expression. Analysis of mRNA species indicates that the reduction is specific for the TCR β chain. These data demonstrate that Ly-6A may regulate TCR expression and may be involved in early events of T cell activation via regulation of fyn tyrosine kinase activity.
|Number of pages||10|
|Publication status||Published - 1994|
All Science Journal Classification (ASJC) codes
- Molecular Biology
- Biochemistry, Genetics and Molecular Biology(all)
- Immunology and Microbiology(all)