Antitumor effect of orlistat, a fatty acid synthase inhibitor, is via activation of caspase-3 on human colorectal carcinoma-bearing animal

作者：Chuang Hui Yen; Chang Ya Fang; Hwang Jeng Jong^*

来源：Biomedicine & Pharmacotherapy, 2011, 65(4): 286-292.

DOI：10.1016/j.biopha.2011.02.016

• Fatty acid synthase
• Human colorectal carcinoma
• Orlistat

We established a HT-29/tk-luc human colorectal carcinoma-bearing animal model for the study of the inhibition effect and mechanism of orlistat, a fatty acid synthase (FASN) inhibitor. The results showed that orlistat caused cell cycle arrest at G1 phase, and triggered apoptosis through caspase-3 activation. The tumor inhibition effect of orlistat may also due to the inhibition of fatty acid synthesis without altering FASN activity. The tumor size of orlistat-treated mice in vivo was significantly smaller than that of the controls with 55% inhibition. The therapeutic efficacy was further confirmed with the bioluminescent imaging and nuclear molecular imaging with (131)I-FIAU/gamma scintigraphy and (11)C-acetate/microPET. We suggest that FASN is a potential target for the treatment of human colorectal carcinoma.

• 出版日期2011-7