To investigate the effect of antisense, human telomerase reverse transcriptase (hTERT) mRNA oligodeoxynucleotide on telomerase activity of lymphoblastic leukemic cells. Methods: Telomerase activity was measured by the telomerase PCR ELISA assay kit (TRAP), hTERT protein by immunochemistry and flowcytometry, hTERT mRNA expression by reverse transcription polymerase chain reaction (RT-PCR) assay and gel-image system. Results: Incubation of lymphoblastic leukemic cells (Jurkat, Raji and CEM cell lines) with 10 μmol/L AS PS-ODN could significantly decline the mRNA and hTERT after 72 h, and the telomerase activity was significantly down-regulated or inhibited. Conclusion: The hTERT AS PS-ODN was an excellent inhibitor for telomerase activity of lymphoblastic leukemic cells.
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