PMID- 23244151 OWN - NLM STAT- MEDLINE DCOM- 20130604 LR - 20211203 IS - 2476-762X (Electronic) IS - 1513-7368 (Linking) VI - 13 IP - 10 DP - 2012 TI - Beta-asarone induces LoVo colon cancer cell apoptosis by up-regulation of caspases through a mitochondrial pathway in vitro and in vivo. PG - 5291-8 AB - Beta-asarone is one of the main bioactive constituents in traditional Chinese medicine Acorus calamu. Previous studies have shown that it has antifungal and anthelmintic activities. However, little is known about its anticancer effects. This study aimed to determine inhibitory effects on LoVo colon cancer cell proliferation and to clarify the underlying mechanisms in vitro and in vivo. Dose-response and time-course anti-proliferation effects were examined by MTT assay. Our results demonstrated that LoVo cell viability showed dose- and time-dependence on beta-asarone. We further assessed anti-proliferation effects as beta-asarone-induced apoptosis by annexin V-fluorescein isothiocyanate/propidium iodide assay using a flow cytometer and observed characteristic nuclear fragmentation and chromatin condensation of apoptosis by microscopy. Moreover, we found the apoptosis to be induced through the mitochondrial/caspase pathway by decreasing mitochondrial membrane potential (MMP) and reducing the Bcl-2-to-Bax ratio, in addition to activating the caspase-9 and caspase-3 cascades. Additionally, the apoptosis could be inhibited by a pan-caspase inhibitor, carbobenzoxy-valyl-alanyl-aspartyl-[O-methyl]-fluoromethylketone (Z-VAD-FMK). When nude mice bearing LoVo tumor xenografts were treated with beta-asarone, tumor volumes were reduced and terminal deoxynucleotide transferase-mediated dUTP nick end labeling (TUNEL) assays of excised tissue also demonstrated apoptotic changes. Taken together, these findings for the first time provide evidence that beta-asarone can suppress the growth of colon cancer and the induced apoptosis is possibly mediated through mitochondria/caspase pathways. FAU - Zou, Xi AU - Zou X AD - Department of Oncology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province, Nanjing, China. FAU - Liu, Shen-Lin AU - Liu SL FAU - Zhou, Jin-Yong AU - Zhou JY FAU - Wu, Jian AU - Wu J FAU - Ling, Bo-Fan AU - Ling BF FAU - Wang, Rui-Ping AU - Wang RP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Thailand TA - Asian Pac J Cancer Prev JT - Asian Pacific journal of cancer prevention : APJCP JID - 101130625 RN - 0 (Allylbenzene Derivatives) RN - 0 (Anisoles) RN - 0 (Fibrinolytic Agents) RN - 0 (RNA, Messenger) RN - 0 (asarone) RN - EC 3.4.22.- (Caspases) SB - IM MH - Allylbenzene Derivatives MH - Animals MH - Anisoles/*pharmacology MH - Apoptosis/*drug effects MH - Blotting, Western MH - Caspases/*metabolism MH - Cell Proliferation/*drug effects MH - Colonic Neoplasms/drug therapy/metabolism/*pathology MH - Fibrinolytic Agents/*pharmacology MH - Humans MH - Membrane Potential, Mitochondrial/*drug effects MH - Mice MH - Mice, Nude MH - RNA, Messenger/genetics MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tumor Cells, Cultured EDAT- 2012/12/19 06:00 MHDA- 2013/06/05 06:00 CRDT- 2012/12/19 06:00 PHST- 2012/12/19 06:00 [entrez] PHST- 2012/12/19 06:00 [pubmed] PHST- 2013/06/05 06:00 [medline] AID - 10.7314/apjcp.2012.13.10.5291 [doi] PST - ppublish SO - Asian Pac J Cancer Prev. 2012;13(10):5291-8. doi: 10.7314/apjcp.2012.13.10.5291.