PMID- 30080692 OWN - NLM STAT- MEDLINE DCOM- 20191017 LR - 20220601 IS - 1473-5741 (Electronic) IS - 0959-4973 (Linking) VI - 29 IP - 10 DP - 2018 Nov TI - VX-680 induces p53-mediated apoptosis in human cholangiocarcinoma cells. PG - 1004-1010 LID - 10.1097/CAD.0000000000000682 [doi] AB - VX-680 is one selective small-molecule inhibitor of the Aurora kinases. It has been shown to disrupt motosis and induce apoptosis in a wide variety of tumor cell lines. However, its effect on human cholangiocarcinoma (CCA) cells remains uncharacterized. In the current study, we observed the effects of VX-680 on the human CCA (QBC939 and HCCC-9810) cell line. In cell culture, VX-680 inhibited proliferation and induced apoptosis of tumor cell growth in a dose-dependent and time-dependent manner, and exerted the most effective cytotoxicity against HCCC-9810 cells. The proliferation inhibition rate increased from 5.39 to 51.74%, whereas the apoptosis rate increased from 9.59 to 50.02% when HCCC-9810 cells were cultured with 5 micromol/l VX-680 for 48 h. Immunoblot analysis showed that the expression of phospho-p53(Ser-15) was upregulated after 48 h treatment of the cancer cells with VX-680. This activation in p53 was associated with a decrease in Bcl-2 and an increase in Bax, which led to the expression of its downstream effectors (caspase-9 and caspase-3). We further found that pifithrin-alpha, a p53 inhibitor, attenuated the anticancer effects of VX-680 and downregulated the expression of apotosis-related proteins (Bax and caspase-9). These results suggest that VX-680 could mediate cell death by acting on a P53/Bax/ caspase-3-dependent pathway in human CCA cells. FAU - Liu, Juan AU - Liu J AD - Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, People's Republic of China. FAU - Qin, Cheng-Yong AU - Qin CY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Anticancer Drugs JT - Anti-cancer drugs JID - 9100823 RN - 0 (Piperazines) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Tumor Suppressor Protein p53) RN - 234335M86K (tozasertib) RN - EC 2.7.11.1 (Aurora Kinases) RN - EC 3.4.22.- (CASP3 protein, human) RN - EC 3.4.22.- (CASP9 protein, human) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 9) SB - IM MH - Apoptosis/drug effects MH - Aurora Kinases/antagonists & inhibitors MH - Bile Duct Neoplasms/*drug therapy MH - Caspase 3/metabolism MH - Caspase 9/metabolism MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Cholangiocarcinoma/*drug therapy/pathology MH - Dose-Response Relationship, Drug MH - Humans MH - Piperazines/administration & dosage/*pharmacology MH - Protein Kinase Inhibitors/administration & dosage/pharmacology MH - Time Factors MH - Tumor Suppressor Protein p53/*metabolism EDAT- 2018/08/07 06:00 MHDA- 2019/10/18 06:00 CRDT- 2018/08/07 06:00 PHST- 2018/08/07 06:00 [pubmed] PHST- 2019/10/18 06:00 [medline] PHST- 2018/08/07 06:00 [entrez] AID - 10.1097/CAD.0000000000000682 [doi] PST - ppublish SO - Anticancer Drugs. 2018 Nov;29(10):1004-1010. doi: 10.1097/CAD.0000000000000682.