PMID- 29876988 OWN - NLM STAT- MEDLINE DCOM- 20181031 LR - 20191210 IS - 1099-1573 (Electronic) IS - 0951-418X (Linking) VI - 32 IP - 10 DP - 2018 Oct TI - Reactive oxygen species-mediated phosphorylation of p38 signaling is critically involved in apoptotic effect of Tanshinone I in colon cancer cells. PG - 1975-1982 LID - 10.1002/ptr.6126 [doi] AB - Though Tanshinone I (Tan I), a phenolic compound from Salvia miltiorrhiza, is known to have anticancer activity in several cancers, its anticancer mechanisms are not fully understood in colon cancer cells. Thus, in the present study, the underlying molecular mechanism of Tan I was explored in HCT116 and HT29 colorectal cancer cells (CRCs). Here, Tan I suppressed viability in HCT116 and HT29 cells in a time- and dose-dependent manner. Also, Tan I increased the number of terminal deoxynucleotide transferase-mediated dUTP nick end labeling (TUNEL)-positive cells and sub-G1 population in HCT116 and HT29 cells. Consistently, Tan I cleaved poly (adenosine diphosphate-ribose) polymerase (PARP) and caspase-8, caspase-3, attenuated the expression of Bid and activated tBid as a caspase-8 substrate and activated phosphorylation of p38 MAPK in HCT116and HT29 cells. Of note, Tan I generated reactive oxygen species (ROS) and conversely an ROS scavenger, N-acetyl-(L) -cysteine, reversed ROS production, PARP cleavage, caspase-3 activation, and p38 MAPK phosphorylation induced by Tan I in HCT116 cells. Furthermore, p38 MAPK inhibitor SB203580 reduced cytotoxicity, increase of TUNEL-positive cells, cleavages of PARP and caspase-3 induced by Tan I in HCT116 cells. Overall, our findings for the first time suggest that ROS-dependent activation of p38 MAPK and caspase-3 is critically involved in Tan I induced apoptosis in CRCs as a potent anticancer agent. CI - Copyright (c) 2018 John Wiley & Sons, Ltd. FAU - Kim, Dong Hee AU - Kim DH AD - College of Korean Medicine, Kyung Hee University, Seoul, South Korea. FAU - Shin, Eun Ah AU - Shin EA AD - College of Korean Medicine, Kyung Hee University, Seoul, South Korea. FAU - Kim, Bonglee AU - Kim B AD - College of Korean Medicine, Kyung Hee University, Seoul, South Korea. FAU - Shim, Bum Sang AU - Shim BS AD - College of Korean Medicine, Kyung Hee University, Seoul, South Korea. FAU - Kim, Sung-Hoon AU - Kim SH AUID- ORCID: 0000-0003-2423-1973 AD - College of Korean Medicine, Kyung Hee University, Seoul, South Korea. LA - eng GR - PJ01317002/Cooperative Research Program for Agriculture Science and Technology Development/ GR - 2017R1A2A1A17069297/National Research Foundation of Korea/ PT - Journal Article DEP - 20180607 PL - England TA - Phytother Res JT - Phytotherapy research : PTR JID - 8904486 RN - 0 (Abietanes) RN - 0 (Reactive Oxygen Species) RN - 03UUH3J385 (tanshinone) RN - EC 2.4.2.30 (Poly(ADP-ribose) Polymerases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - EC 3.4.22.- (CASP3 protein, human) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 8) SB - IM MH - Abietanes/*pharmacology MH - Apoptosis/*drug effects MH - Caspase 3/metabolism MH - Caspase 8/metabolism MH - Cell Line, Tumor MH - Colonic Neoplasms/drug therapy/*pathology MH - HCT116 Cells MH - HT29 Cells MH - Humans MH - *MAP Kinase Signaling System MH - Phosphorylation MH - Poly(ADP-ribose) Polymerases/metabolism MH - Reactive Oxygen Species/*metabolism MH - Salvia miltiorrhiza/chemistry MH - Signal Transduction/drug effects MH - p38 Mitogen-Activated Protein Kinases/*metabolism OTO - NOTNLM OT - Tanshinone I OT - caspase-3 OT - colon cancer OT - p38 OT - reactive oxygen species EDAT- 2018/06/08 06:00 MHDA- 2018/11/01 06:00 CRDT- 2018/06/08 06:00 PHST- 2018/03/02 00:00 [received] PHST- 2018/05/11 00:00 [revised] PHST- 2018/05/15 00:00 [accepted] PHST- 2018/06/08 06:00 [pubmed] PHST- 2018/11/01 06:00 [medline] PHST- 2018/06/08 06:00 [entrez] AID - 10.1002/ptr.6126 [doi] PST - ppublish SO - Phytother Res. 2018 Oct;32(10):1975-1982. doi: 10.1002/ptr.6126. Epub 2018 Jun 7.