M⁶A mRNA methylation regulates AKT activity to promote the proliferation and tumorigenicity of endometrial cancer.

ABSTRACT: N⁶-methyladenosine (m⁶A) messenger RNA methylation is a gene regulatory mechanism affecting cell differentiation and proliferation in development and cancer. To study the roles of m⁶A mRNA methylation in cell proliferation and tumorigenicity, we investigated human endometrial cancer in which a hotspot R298P mutation is present in a key component of the methyltransferase complex (METTL14). We found that about 70% of endometrial tumours exhibit reductions in m⁶A methylation that are probably due to either this METTL14 mutation or reduced expression of METTL3, another component of the methyltransferase complex. These changes lead to increased proliferation and tumorigenicity of endometrial cancer cells, likely through activation of the AKT pathway.

SUBMITTER: Liu J 

PROVIDER: S-EPMC6245953 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature