PMID- 32863905 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1792-1074 (Print) IS - 1792-1082 (Electronic) IS - 1792-1074 (Linking) VI - 20 IP - 4 DP - 2020 Oct TI - YM155 sensitizes HeLa cells to TRAIL-mediated apoptosis via cFLIP and survivin downregulation. PG - 72 LID - 10.3892/ol.2020.11933 [doi] LID - 72 AB - Tumor necrosis factor-related apoptosis inducing ligand (TRAIL)-mediated apoptosis is a safe method for the treatment of various types of cancer. However, TRAIL therapy is less effective in certain types of cancer, including cervical cancer. To address this problem, a combinatorial approach was employed to sensitize cervical cancer at low dosages. YM155, a survivin inhibitor, was used at low dosages along with TRAIL to induce apoptosis in HeLa cells. The effects of the individual treatment with TRAIL and YM155 on apoptosis were assessed by propidium iodide assay. In addition, to validate the DNA damage exhibited by the combination treatment, the phosphorylation status of gammaH2A histone family member X was investigated by immunofluorescence and western blot analysis. TRAIL or YM155 alone had no significant effect on DNA damage and apoptosis. However, the TRAIL/YM155 combination triggered a synergistic pro-apoptotic stimulus in HeLa cells. The mRNA and protein levels of CASP8- and FADD-like apoptosis regulator (cFLIP), death receptor 5 (DR5) and survivin were monitored using RT-PCR and western blot analysis, respectively. This combinatorial approach downregulated both mRNA and protein expression levels of cFLIP and survivin. Further experimental results suggested that the combination treatment significantly reduced cell viability, invasion and migration of HeLa cells. Overall, the present findings indicated that the low dosage of YM155 sensitized HeLa cells to TRAIL-induced apoptosis via a mechanism involving downregulation of cFLIP and survivin. The results indicated the importance of combination drug treatment and reveal an effective therapeutic alternative for TRAIL therapy in human cervical cancer. CI - Copyright: (c) Chandrasekaran et al. FAU - Chandrasekaran, Arun Pandian AU - Chandrasekaran AP AD - Graduate School of Biomedical Science and Engineering, Department of Biomedical Science, Hanyang University, Seoul 04763, Republic of Korea. FAU - Poondla, Naresh AU - Poondla N AD - Graduate School of Biomedical Science and Engineering, Department of Biomedical Science, Hanyang University, Seoul 04763, Republic of Korea. FAU - Ko, Na Re AU - Ko NR AD - Biomedical Research Center, Asan Institute for Life Sciences, Seoul 05505, Republic of Korea. AD - Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea. FAU - Oh, Seung Jun AU - Oh SJ AD - Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea. FAU - Ramakrishna, Suresh AU - Ramakrishna S AD - Graduate School of Biomedical Science and Engineering, Department of Biomedical Science, Hanyang University, Seoul 04763, Republic of Korea. AD - College of Medicine, Department of Genetics, Hanyang University, Seoul 04763, Republic of Korea. LA - eng PT - Journal Article DEP - 20200730 PL - Greece TA - Oncol Lett JT - Oncology letters JID - 101531236 PMC - PMC7436932 OTO - NOTNLM OT - CASP8- and FADD-like apoptosis regulator OT - HeLa cells OT - YM155 OT - apoptosis OT - death receptor 5 OT - survivin OT - tumor necrosis factor-related apoptosis inducing ligand therapy EDAT- 2020/08/31 06:00 MHDA- 2020/08/31 06:01 PMCR- 2020/07/30 CRDT- 2020/09/01 06:00 PHST- 2020/02/19 00:00 [received] PHST- 2020/06/16 00:00 [accepted] PHST- 2020/09/01 06:00 [entrez] PHST- 2020/08/31 06:00 [pubmed] PHST- 2020/08/31 06:01 [medline] PHST- 2020/07/30 00:00 [pmc-release] AID - OL-0-0-11933 [pii] AID - 10.3892/ol.2020.11933 [doi] PST - ppublish SO - Oncol Lett. 2020 Oct;20(4):72. doi: 10.3892/ol.2020.11933. Epub 2020 Jul 30.