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METTL3 enhances cell adhesion through stabilizing integrin β1 mRNA via an m6A-HuR-dependent mechanism in prostatic carcinoma.


ABSTRACT: Bone metastasis is the major cause of morbidity and mortality in patients with prostate cancer (PCa). However, the underlying mechanism of bone-specific metastasis remain vague. Recently, with the deep research of N6-methyladenine (m6A) mRNA methylation, many studies directly focus on the role of m6A modification in human diseases, especially in cancers. Here we found that methyltransferase-like 3 (METTL3) expression is higher in PCa than in normal prostate tissues, especially in PCa with bone metastasis. High METTL3 expression was positively correlated with advanced progression and a poor prognosis of PCa. Functional assays demonstrated that METTL3 regulates the expression of Integrin β1 (ITGB1) through m6A-HuR-dependent mechanism, which affects the binding of ITGB1 to Collagen I and tumor cell motility, so as to promote the bone metastasis of PCa. The findings of this study reveal a novel mechanism of PCa osteotropism and suggest METTL3 as a therapeutic target for PCa bone metastasis.

SUBMITTER: Li E 

PROVIDER: S-EPMC7136910 | biostudies-literature |

REPOSITORIES: biostudies-literature

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