“…Telomerase is tightly regulated in several levels, including transcriptional and post-transactional. On one side, alternative splicing has an essential role in the regulation of hTERT mRNA expression [13,15], and on the other side, studies have shown that telomerase function is regulated by post-translational regulation in serine/ threonine or tyrosine residue of hTERT [16]. In addition, several factors including p53, c-myc, AKT kinase, sp1, WT1, NF1, c-myb, AP1, and C-Ets2 regulate the catalytic subunits of telomerase [17][18][19][20][21][22].…”