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  • Title: Expression and vitamin D3 regulation of long-chain fatty-acid-CoA ligase 3 in human prostate cancer cells.
    Author: Qiao S, Tuohimaa P.
    Journal: Prostaglandins Leukot Essent Fatty Acids; 2011; 84(1-2):19-23. PubMed ID: 21041072.
    Abstract:
    We found previously that long-chain fatty-acid-CoA ligase 3 (FACL3), a critical enzyme for activation of long-chain fatty acids, was upregulated by 1α, 25(OH)(2)D(3) at an mRNA and enzyme activity levels in prostate cancer cells. Our further study indicated that the FACL3 mediated 1α,25(OH)(2)D(3) inhibition of fatty acid synthase (FAS), which is associated with many cancers, including prostate cancer. In the current study, we investigated an FACL3 protein expression and its regulation by 1α, 25(OH)(2)D(3) and its synthetic analogs EB1089 and CB1093 in prostate cancer cells. The results showed that the expression of an FACL3 protein was upregulated by 1α, 25(OH)(2)D(3), EB1089 and CB1093 in LNCaP cells, consistent with their upregulation of an FACL3 mRNA expression. In addition, the FACL3 expression was found to be markedly low at both mRNA and protein levels in more transformed prostate cancer PC-3 and DU145 cells compared with less transformed LNCaP cells. The data suggest that decreased FACL3 expression might be associated with a more malignant phenotype of prostate cancer.
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