Biological and Pharmaceutical Bulletin
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Print ISSN : 0918-6158
ISSN-L : 0918-6158
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Effects of Curcumin Analogues for Inhibiting Human Prostate Cancer Cells and the Growth of Human PC-3 Prostate Xenografts in Immunodeficient Mice
Dai-Ying ZhouNing DingJeremiah Van DorenXing-Chuan WeiZhi-Yun DuAllan H. ConneyKun ZhangXi Zheng
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2014 年 37 巻 6 号 p. 1029-1034

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Four curcumin analogues ((2E,6E)-2,6-bis(thiophen-3-methylene) cyclohexanone (AS), (2E,5E)-2,5-bis(thiophen-3-methylene) cyclopentanone (BS), (3E,5E)-3,5-bis(thiophen-3-methylene)-tetrahydropyran-4-one (ES) and (3E,5E)-3,5-bis(thiophen-3-methylene)-tetrahydrothiopyran-4-one (FS) as shown in Fig. 1) with different linker groups were investigated for their effects in human prostate cancer CWR-22Rv1 and PC-3 cells. Compounds FS and ES had stronger inhibitory effects than curcumin, AS and BS on the growth of cultured CWR-22Rv1 and PC-3 cells, as well as on the androgen receptor (AR) and nuclear factor kappa B (NF-κB) activity. The strong activities of ES and FS may be correlated with a heteroatom linker. In animal studies, severe combined immunodeficient (SCID) mice were injected subcutaneously (s.c.) with PC-3 cells in Matrigel. After 4 to 6 weeks, mice with PC-3 tumors (about 0.6 cm wide and 0.6 cm long) received daily intraperitoneal (i.p.) injections of vehicle, ES and FS (10 µg/g body weight) for 31 d. FS had a potent effect in inhibiting the growth and progression of PC-3 tumors. Our results indicate that FS may be useful for inhibiting human prostate tumors growth.

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