PMID- 20697773 OWN - NLM STAT- MEDLINE DCOM- 20120508 LR - 20211020 IS - 1573-0646 (Electronic) IS - 0167-6997 (Linking) VI - 30 IP - 1 DP - 2012 Feb TI - Synthesis and antitumor activity of novel aroylthiourea derivatives of podophyllotoxin. PG - 17-24 LID - 10.1007/s10637-010-9508-1 [doi] AB - A novel series of 4beta-[(4-substituted) aroylthiourea] derivatives of podophyllotoxin were synthesized and their abilities to inhibit the growth of cancer cells were investigated by MTT assay. Compound 4a possessed the highest cytotoxicity on HepG2, A549 and HCT-116 cancer cell lines with the IC(50) values of 0.1 muM. Apoptosis in HCT-116 cells induced by compound 4a was observed by Hoechst33342-Propidium iodide (PI) and acridine orange (AO)-ethidium bromide (EB) double staining assays. DNA flow cytometric analysis revealed that 4a induced cell cycle arrest at G2/M phase and kDNA decatenation assay indicated that 4a inhibited topoisomerase IIalpha-mediated kDNA decatenation. Our results indicated that compound 4a possessed promising antitumor activity, which need to be studied further. FAU - Zhao, Yu AU - Zhao Y AD - Institute of Nautical Medicine, Nantong University, Nantong 226001, China. FAU - Wang, Chengniu AU - Wang C FAU - Wu, Zhonghua AU - Wu Z FAU - Fang, Jinghuai AU - Fang J FAU - Zhu, Li AU - Zhu L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100810 PL - United States TA - Invest New Drugs JT - Investigational new drugs JID - 8309330 RN - 0 (Antigens, Neoplasm) RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (DNA, Catenated) RN - 0 (DNA-Binding Proteins) RN - 0 (Enzyme Inhibitors) RN - EC 5.99.1.3 (DNA Topoisomerases, Type II) RN - GYV9AM2QAG (Thiourea) RN - L36H50F353 (Podophyllotoxin) SB - IM MH - Antigens, Neoplasm/metabolism MH - Antineoplastic Agents, Phytogenic/*chemical synthesis/*pharmacology MH - Apoptosis/drug effects MH - Cell Proliferation/*drug effects MH - DNA Topoisomerases, Type II/metabolism MH - DNA, Catenated/metabolism MH - DNA-Binding Proteins/antagonists & inhibitors/metabolism MH - Dose-Response Relationship, Drug MH - Enzyme Inhibitors/chemical synthesis/pharmacology MH - Flow Cytometry MH - G2 Phase Cell Cycle Checkpoints/drug effects MH - HCT116 Cells MH - Hep G2 Cells MH - Humans MH - Inhibitory Concentration 50 MH - M Phase Cell Cycle Checkpoints/drug effects MH - Molecular Structure MH - Podophyllotoxin/analogs & derivatives/*chemical synthesis/*pharmacology MH - Staining and Labeling MH - Structure-Activity Relationship MH - Thiourea/analogs & derivatives/*chemical synthesis/*pharmacology MH - Time Factors EDAT- 2010/08/11 06:00 MHDA- 2012/05/09 06:00 CRDT- 2010/08/11 06:00 PHST- 2010/06/16 00:00 [received] PHST- 2010/07/26 00:00 [accepted] PHST- 2010/08/11 06:00 [entrez] PHST- 2010/08/11 06:00 [pubmed] PHST- 2012/05/09 06:00 [medline] AID - 10.1007/s10637-010-9508-1 [doi] PST - ppublish SO - Invest New Drugs. 2012 Feb;30(1):17-24. doi: 10.1007/s10637-010-9508-1. Epub 2010 Aug 10.