Abstract：
:The de novo fatty acid synthesis catalyzed by key lipogenic enzymes, including fatty acid synthase (FASN) has emerged as one of the novel targets of anti-cancer approaches. The present study explored the possible inhibitory efficacy of [6]-gingerol on de novo fatty acid synthesis associated with mitochondrial-dependent apoptotic induction in HepG2 cells. We observed a dissipation of mitochondrial membrane potential accompanied by a reduction of fatty acid levels. [6]-gingerol administration manifested inhibition of FASN expression, indicating FASN is a major target of [6]-gingerol inducing apoptosis in HepG2 cells. Indeed, we found that increased ROS generation could likely be a mediator of the anti-cancer effect of [6]-gingerol. A reduction of fatty acid levels and induction of apoptosis were restored by inhibition of acetyl-CoA carboxylase (ACC) activity, suggesting an accumulation of malonyl-CoA level could be the major cause of apoptotic induction of [6]-gingerol in HepG2 cells. The present study also showed that depletion of fatty acid following [6]-gingerol treatment caused an inhibitory effect on carnitine palmitoyltransferase-1 activity (CPT-1), whereas C75 augmented CPT-1 activity, indicating that [6]-gingerol exhibits the therapeutic benefit on suppression of fatty acid β-oxidation.
journal_name
Am J Cancer Resjournal_title
American journal of cancer researchauthors
Impheng H,Richert L,Pekthong D,Scholfield CN,Pongcharoen S,Pungpetchara I,Srisawang Psubject
Has Abstractpub_date
2015-03-15 00:00:00pages
1319-36issue
4issn
2156-6976journal_volume
5pub_type
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