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2017 ; 7
(1
): 5626
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The aspirin metabolite salicylate inhibits lysine acetyltransferases and MUC1
induced epithelial to mesenchymal transition
#MMPMID28717171
Fernandez HR
; Lindén SK
Sci Rep
2017[Jul]; 7
(1
): 5626
PMID28717171
show ga
MUC1 is a transmembrane mucin that can promote cancer progression, and its
upregulation correlates with a worse prognosis in colon cancer. We examined the
effects of overexpression of MUC1 in colon cancer cells, finding that it induced
epithelial to mesenchymal transition (EMT), including enhanced migration and
invasion, and increased Akt phosphorylation. When the clones were treated with
the aspirin metabolite salicylate, Akt phosphorylation was decreased and EMT
inhibited. As the salicylate motif is necessary for the activity of the lysine
acetyltransferase (KAT) inhibitor anacardic acid, we hypothesized these effects
were associated with the inhibition of KAT activity. This was supported by
anacardic acid treatment producing the same effect on EMT. In vitro KAT assays
confirmed that salicylate directly inhibited PCAF/Kat2b, Tip60/Kat5 and
hMOF/Kat8, and this inhibition was likely involved in the reversal of EMT in the
metastatic prostate cancer cell line PC-3. Salicylate treatment also inhibited
EMT induced by cytokines, illustrating the general effect it had on this process.
The inhibition of both EMT and KATs by salicylate presents a little explored
activity that could explain some of the anti-cancer effects of aspirin.