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© Research
Publication : Experimental cell research

The zeta isoform of protein kinase C controls interleukin-2-mediated proliferation in a murine T cell line: evidence for an additional role of protein kinase C epsilon and beta

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Experimental cell research - 01 May 1995

Gómez J, Pitton C, García A, Martinez de Aragón A, Silva A, Rebollo A

Link to Pubmed [PMID] – 7737351

Exp. Cell Res. 1995 May;218(1):105-13

In order to address a role of protein kinase C in signal transduction through interleukin-2, interleukin-4, and interleukin-9 receptors, we took advantage of the availability of a selective protein kinase C inhibitor, GF109203X, and the availability of TS1 beta and TS1 alpha beta cell lines which can be maintained in interleukin-2, interleukin-4, or interleukin-9 independently. In this report we report that inhibition of protein kinase C activity by GF109203X does not block interleukin-4- or interleukin-9-dependent proliferation and, on the contrary, does block interleukin-2-dependent proliferation, suggesting that interleukin-4 and interleukin-9 do not use signal transduction pathways mediated by protein kinase C and that the common gamma chain of interleukin-2, interleukin-4, and interleukin-9 receptors is not responsible per se for the activation of protein kinase C through interleukin-2 receptor. Moreover, GF109203X induces apoptosis in cells cultured in interleukin-2 but not in interleukin-4 or interleukin-9. Using antisense oligonucleotides, we report that the zeta and epsilon protein kinase C isoforms are involved in signaling through high-affinity interleukin-2 receptor and beta and zeta are involved in signaling through intermediate-affinity interleukin-2 receptor. Taken together, our data indicate that activation of the zeta, beta, and epsilon protein kinase C isoforms is an important step in interleukin-2-mediated proliferation.

http://www.ncbi.nlm.nih.gov/pubmed/7737351