Telomerase is regulated by c-Jun NH2-terminal kinase in ovarian surface epithelial cells.

Telomerase activity is present in >90% of all tumors and appears to be regulated by the phosphatidylinositol 3-kinase signaling pathway. Here we demonstrate that Akt is not involved in the signaling cascade for telomerase regulation in ovarian surface epithelial cells. However, we showed that c-Jun NH2-kinase induces telomerase activity, that inhibition of JNK by JIP abrogates telomerase activity, and that JNK expression activates transcription of a reporter gene fused to the hTERT promoter sequence.