Journal
CELL DEATH & DISEASE
Volume 11, Issue 8, Pages -Publisher
SPRINGERNATURE
DOI: 10.1038/s41419-020-02833-y
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Funding
- National Key Research and Development Program of China Stem Cell and Translational Research [2019YFA0110700, 2017YFA0105101]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_16R32]
- Key Research & Development Program of Guangzhou Regenerative Medicine and Health Guangdong Laboratory [2018GZR110104004]
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Previous studies have revealed the critical roles of the N6-methyladenosine (m6A) modification of long non-coding RNAs (lncRNAs) in cancers, but the relationship between the oncogenic role of the lncRNATHOR(a representative of cancer/testis lncRNAs) and m6A modification remains unclear. Here, we show that the internal m6A modification of the lncRNATHORvia an m6A-reader-dependent modality regulates the proliferation of cancer cells. Our findings demonstrated that the loss of the lncRNATHORinhibits the proliferation, migration, and invasion of cancer cells in vitro and in vivo. In addition, m6A is highly enriched on lncRNATHORtranscripts, which contain GA (m6A) CA, GG (m6A) CU, and UG (m6A) CU sequence motifs. RIP-qRT-PCR and RNA pull-down assay results revealed that the specific m6A readers YTHDF1 and YTHDF2 can read the m6A motifs and regulate the stability of the lncRNATHOR(stabilization and decay). These m6A-dependent RNA-protein interactions can maintain the oncogenic role of the lncRNATHOR. Collectively, these findings highlight the critical role of the m6A modification in oncogenic lncRNATHORand reveal a novel long non-coding RNA regulatory mechanism, providing a new way to explore RNA epigenetic regulatory patterns in the future.
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