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2016 ; 5
(7
): 1599-606
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Fatty acid synthase regulates invasion and metastasis of colorectal cancer via
Wnt signaling pathway
#MMPMID27139420
Wang H
; Xi Q
; Wu G
Cancer Med
2016[Jul]; 5
(7
): 1599-606
PMID27139420
show ga
Fatty acid synthase (Fasn) is the key metabolic enzyme that accounts for the
terminal catalytic step in fatty acid synthesis, which is hyperactivated in
various tumors. In this study, we depicted that Fasn expression was elevated in
human colorectal cancer (CRC), which accordingly led to lymphatic and distant
metastasis and a more advanced clinical phenotype. Genetic perturbations
demonstrated that knocking down Fasn inhibited cell migration and invasion both
in SW480 and HT29 CRC cell lines. Further mechanical exploration revealed that
Fasn knockdown could attenuate Wnt signaling pathway via downregulating
distinctive genes, namely Wnt5a, Wnt5b, Fzd2, which at least partly contributed
to the decrease in metastasis. Clinical evidence verified a positive correlation
between Fasn expression and Wnt signal marker gene expression in a cohort of 43
CRC patients. In conclusion, we shed light on metabolic switches took place
during CRC carcinogenesis, among which Fasn is a critical factor and a potential
therapeutic target.