activation of protein kinase c by the phorbol ester , tetradecanoyl phorbol acetate or other phorbol esters increases the levels of the alpha and beta t cell receptor ( tcr-alpha , tcr-beta ) mrna , whereas an increase in cytosolic free ca2+ , induced by ionomycin or other ca2+ ionophores , results in a decrease of alpha and beta tcr mrna levels .
C0039654
tetradecanoyl phorbol
C0031586
phorbol esters