The influence of compound ITEL1296 on telomerase activity and the growth of cancer cells

Telomerase is a ribonueleoprotein that synthesizes telomeric repeats and identified as a promising target for anticancer therapy. Here we describe a new compound aITEL 1296 as a potent telomcrase inhibitor. Its inhibitory activity was a bit higher (IC50 = 0,19±0,02 ng/ml) than that of BIBR1532, one of the most potent telomerase inhibitors known to date. Besides telomerase inhibition aITEL 1296 activated apoptotic mechanisms and effectively suppressed proliferation of tumor cell lines (GI50 = 5,0±0,2 ng/ml for most sensitive cell line LnCap) but not normal fibroblast cell line.