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Next Generation Sequencing Facilitates Quantitative Analysis of SMMC7721 shYTHDF2 and shCtrl transcriptomes.

ABSTRACT: Dynamic N6-methyladenosine (m6A) modification was previously identified as a ubiquitous post-transcriptional regulation that affected mRNA homeostasis. However, the m6A-related epitranscriptomic alterations and functions remain elusive in human diseases such as cancer. Here we show that hypoxia restrains the ‘reader’ protein YTH domain family 2 (YTHDF2), to stabilize the methylated oncogene mRNAs in inflammation-associated liver cancer. YTHDF2 silenced in human cancer cells or depleted in mouse hepatocytes evoked pro-inflammatory responses and accelerated tumor growth and metastatic progression. Under hypoxia, YTHDF2 processed the decay of m6A-containing interleukin 11 (IL11) and serpin family E member 2 (SERPINE2) mRNAs, which were responsible for the inflammation-mediated malignancy. Reciprocally, YTHDF2 transcription succumbed to hypoxia-inducible factor-2α (HIF-2α). Administration of a HIF-2α antagonist (PT2385) restored YTHDF2-programed epigenetic machinery and repressed liver cancer. Hence, our findings provide a new insight into the mechanism by which hypoxia adapts m6A-mRNA editing to promote cancer.

ORGANISM(S): Homo sapiens

PROVIDER: GSE120659 | GEO | 2020/03/17

REPOSITORIES: GEO

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Next Generation Sequencing Facilitates Quantitative Analysis of SMMC7721 shYTHDF2 and shCtrl transcriptomes.

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