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52:4965–8.PubMed Authors’ contributions OF, FR and DD carried out the in vivo experiments. SL and HT carried out the in vitro experiments. BC participated in the design of the study and performed the statistical analysis. POD, FG and PR conceived the study, and participated in its design and coordination. All authors read and approved the final manuscript.”
“Background why Immortalized and malignant tumor cells are characterized by unlimited cell proliferation and programmed cell death (apoptosis). It has been demonstrated that malignant transformation occurs when the telomerase in normal cell is activated [1, 2]. Telomerase activity is found in almost all malignant tumors [3]. Human telomerase RNA (hTR) is associated with the activity of telomerase, immortalized cancer cells retain the highest level of hTR [4, 5]. In recent years, hammerhead ribozymes were used to inhibit the telomerase activity by targeting the template region of telomerase RNA in malignant tumors [6, 7]. Yet, there is no report about HDV ribozyme for inhibition of telomerase activity.