PMID- 25406855 OWN - NLM STAT- MEDLINE DCOM- 20160107 LR - 20150407 IS - 1537-6524 (Electronic) IS - 1537-6516 (Linking) VI - 25 IP - 2 DP - 2015 Feb TI - Effect of deoxycholic acid on Ca2+ movement, cell viability and apoptosis in human gastric cancer cells. PG - 113-9 LID - 10.3109/15376516.2014.990597 [doi] AB - Deoxycholic acid (DOA) is one of the secondary bile acids used as a mild detergent for the isolation of membrane associated proteins. This study examined whether the secondary bile acid, DOA, altered Ca(2+) movement, cell viability and apoptosis in SCM1 human gastric cancer cells. The Ca(2+)-sensitive fluorescent dye fura-2 was used to measure [Ca(2+)]i. DOA-evoked [Ca(2+)]i rises concentration dependently. The response was reduced by removing extracellular Ca(2+). DOA-evoked Ca(2+) entry was inhibited by store-operated Ca(2+) channel inhibitors (nifedipine, econazole and SKF96365), the protein kinase C (PKC) activator phorbol 12-myristate 13 acetate (PMA) and the PKC inhibitor GF109203X. In Ca(2+)-free medium, treatment with the endoplasmic reticulum Ca(2+) pump inhibitor thapsigargin (TG) abolished DOA-evoked [Ca(2+)]i rises. Conversely, treatment with DOA abolished TG-evoked [Ca(2+)]i rises. Inhibition of phospholipase C with U73122 abolished DOA-evoked [Ca(2+)]i rises. At 100-500 muM, DOA decreased cell viability, which was not changed by chelating cytosolic Ca(2+) with 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid-acetoxymethyl ester (BAPTA/AM). DOA between 100 and 300 muM also induced apoptosis. Collectively, in SCM1 cells, DOA-induced [Ca(2+)]i rises by evoking phospholipase C-dependent Ca(2+) release from the endoplasmic reticulum and Ca(2+) entry via store-operated Ca(2+) channels. DOA also caused Ca(2+)-independent apoptosis. FAU - Chien, Jau-Min AU - Chien JM AD - Department of Pediatrics, Ping Tung Christian Hospital , Ping Tung , Taiwan . FAU - Chou, Chiang-Ting AU - Chou CT FAU - Liang, Wei-Zhe AU - Liang WZ FAU - Cheng, Jin-Shiung AU - Cheng JS FAU - Chang, Hong-Tai AU - Chang HT FAU - Tseng, Hui-Wen AU - Tseng HW FAU - Kuo, Soong-Yu AU - Kuo SY FAU - Kuo, Chun-Chi AU - Kuo CC FAU - Chen, Fu-An AU - Chen FA FAU - Shieh, Pochuen AU - Shieh P FAU - Ho, Chin-Man AU - Ho CM FAU - Lin, Jia-Rong AU - Lin JR FAU - Kuo, Daih-Huang AU - Kuo DH FAU - Jan, Chung-Ren AU - Jan CR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150224 PL - England TA - Toxicol Mech Methods JT - Toxicology mechanisms and methods JID - 101134521 RN - 0 (Antineoplastic Agents) RN - 0 (Calcium Channel Blockers) RN - 0 (Calcium Chelating Agents) RN - 0 (Enzyme Activators) RN - 0 (Protein Kinase Inhibitors) RN - 005990WHZZ (Deoxycholic Acid) RN - 105344-37-4 (fura-2-am) RN - EC 2.7.11.13 (Protein Kinase C) RN - EC 3.6.3.8 (Sarcoplasmic Reticulum Calcium-Transporting ATPases) RN - SY7Q814VUP (Calcium) RN - TSN3DL106G (Fura-2) SB - IM MH - Antineoplastic Agents/*pharmacology MH - Apoptosis/*drug effects MH - Calcium/*metabolism MH - Calcium Channel Blockers/pharmacology MH - Calcium Chelating Agents/pharmacology MH - Calcium Signaling/*drug effects MH - Cell Line, Tumor MH - Cell Survival/*drug effects MH - Deoxycholic Acid/*pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme Activation MH - Enzyme Activators/pharmacology MH - Fura-2/analogs & derivatives/metabolism MH - Humans MH - Microscopy, Fluorescence MH - Protein Kinase C/antagonists & inhibitors/metabolism MH - Protein Kinase Inhibitors/pharmacology MH - Sarcoplasmic Reticulum Calcium-Transporting ATPases/antagonists & inhibitors/metabolism MH - Stomach Neoplasms/*drug therapy/metabolism/pathology MH - Time Factors OTO - NOTNLM OT - Apoptosis OT - Ca2+ OT - deoxycholic acid OT - endoplasmic reticulum OT - gastric cancer cells EDAT- 2014/11/20 06:00 MHDA- 2016/01/08 06:00 CRDT- 2014/11/20 06:00 PHST- 2014/11/20 06:00 [entrez] PHST- 2014/11/20 06:00 [pubmed] PHST- 2016/01/08 06:00 [medline] AID - 10.3109/15376516.2014.990597 [doi] PST - ppublish SO - Toxicol Mech Methods. 2015 Feb;25(2):113-9. doi: 10.3109/15376516.2014.990597. Epub 2015 Feb 24.