title: [Effect of arsenic trioxide on telomerase and telomerase reverse transcriptase in KM3 cell line].
abstract: To explore the effects of arsenic trioxide on multiple myeloma (MM) cell line KM(3) and its possible mechanism, cell viability was counted by trypan-blue exclusion, apoptosis was detected by morphology and DNA ladder; cell cycle was assayed by flow cytometry (FCM), telomerase activity was determined by semi-quantitative telomeric repeat amplification protocol (TRAP)-reverse transcription polymerase chain reaction (RT-PCR)-enzyme linked immunosorbent assay (ELISA), while the expression of hTERT mRNA in transcriptional level was measured by using RT-PCR. The results showed that arsenic trioxide inhibited the growth and viability of KM(3) cell and induced apoptosis; cell cycle was arrested in G(2) phase; arsenic trioxide could inhibit telomerase activity, which consisted with the downtrend of hTERT mRNA expression. In conclusion, down-regulation of telomerase activity and hTERT may play an important role in the apoptosis of MM cell line KM(3) induced by arsenic trioxide.
authors.affiliation: Department of Hematology, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou 310003, China.
authors.forename: Zhen-Xing
authors.initials: ZX
authors.lastname: Guo
authors.forename: Jie
authors.initials: J
authors.lastname: Jin
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D000077237:Arsenic Trioxide; D001152:Arsenicals / Q000494:pharmacology*; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D004268:DNA-Binding Proteins; D006801:Humans; D009101:Multiple Myeloma / Q000188:drug therapy* / Q000201:enzymology / Q000473:pathology; D010087:Oxides / Q000494:pharmacology*; D012333:RNA, Messenger / Q000032:analysis; D019098:Telomerase / Q000235:genetics / Q000378:metabolism*
chemical_list: D000970:Antineoplastic Agents; D001152:Arsenicals; D004268:DNA-Binding Proteins; D010087:Oxides; D012333:RNA, Messenger; D019098:Telomerase; D000077237:Arsenic Trioxide