Synthesis and biological evaluation of 2',5'-dimethoxychalcone derivatives as microtubule-targeted anticancer agents.
A series of novel 2',5'-dimethoxylchalcone derivatives including 18 new compounds were synthesized and evaluated for cytotoxicities against two human cancer cell lines, NTUB1 (human bladder cancer cell line) and PC3 (human prostate cancer cell line). All these derivatives except for 21 exhibited significant cytotoxic effect against NTUB1 and PC3 cell lines. Compounds 13 and 17 with 4-carbamoyl moiety showed potent inhibitory effect on growth of NTUB1 and PC3 cells. Flow cytometric analysis demonstrated that treatment of NTUB1 cells with 1 microM 13 and 17 induced G1 phase arrest accompanied by an increase in apoptotic cell death of NTUB1 cells after 24 h. Treatment of PC3 cells with 1 microM and 3 microM 13, and 1 microM and 3 microM 17 induced S and G1, and G1 and G2/M phase arrests, respectively, accompanied by an increase in apoptotic cell death. These data suggested that 13 and 17 with different 4-carbamoyl moiety displayed same cell cycle arrest in NTUB1 cells while different doses of 13 and 17 revealed different cell cycle arrest in PC3 cells. Cell morphological study of 17 indicated that more cells rounding up or dead associated with tubulin polymerization. Compound 17 showed an increased alpha-tubulin level in polymerized microtubule fraction in a dose-dependent manner while 500 nM paclitaxel also showed similar effect in NTUB1 cells by Western blot analysis. The result suggested that 17 may be used as microtubule-targeted agents.
Tu
Huang-Yao
HY
Faculty of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Huang
A-Mei
AM
Graduate Institute of Biochemistry, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Hour
Tzyh-Chyuan
TC
Graduate Institute of Biochemistry, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Yang
Shyh-Chyun
SC
Faculty of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Pu
Yeong-Shiau
YS
Department of Urology, College of Medicine, National Taiwan University, Taipei 100, Taiwan.
Lin
Chun-Nan
CN
Faculty of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Life Science, National Taitung University, Taitung 950, Taiwan.
D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002453:Cell Cycle / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D047188:Chalcones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D008870:Microtubules / Q000187:drug effects*; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured
C549682:2',5'-dimethoxychalcone; D000970:Antineoplastic Agents; D047188:Chalcones