Exosome-bound WD repeat protein Monad inhibits breast cancer cell invasion by degrading amphiregulin mRNA.

Exosome-bound WD repeat protein Monad inhibits breast cancer cell invasion by degrading amphiregulin mRNA.
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DOI:
10.1371/journal.pone.0067326
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Kamisaki Y
Kamisaki Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Saeki M;Egusa H;Kamano Y;Kakihara Y;Houry WA;Yatani H;Noguchi S;Kamisaki Y

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Increased stabilization of mRNA coding for key cancer genes can contribute to invasiveness. This is achieved by down-regulation of exosome cofactors, which bind to 3'-UTR in cancer-related genes. Here, we identified amphiregulin, an EGFR ligand, as a target of WD repeat protein Monad, a component of R2TP/prefoldin-like complex, in MDA-MB-231 breast cancer cells. Monad specifically interacted with both the 3'-UTR of amphiregulin mRNA and the RNA degrading exosome, and enhanced decay of amphiregulin transcripts. Knockdown of Monad increased invasion and this effect was abolished with anti-amphiregulin neutralizing antibody. These results suggest that Monad could prevent amphiregulin-mediated invasion by degrading amphiregulin mRNA.
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