Review Volume 15, Issue 9 pp 3857—3889

Insights into N6-methyladenosine (m6A) modification of noncoding RNA in tumor microenvironment

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Figure 2. Molecular mechanism associated with the modification of m6A methylation. (A) m6A Writers are mainly composed of METTL3, METTL14, WTAP, METTL16, RBM15 and ZC3H13, mediating the modification of m6A methylation of RNA. Erasers mediate the process of m6A demethylation, mainly including FTO and ALKBH5. (B) m6A Readers recognize m6A methylation, including YTHDF1-3, YTHDC1-2, HNRNPC, HNRNPA2B1, eIF3, and IGF2BP1/2/3. (C) m6A modification plays a regulatory role in pri-miRNA to regulate the processing and maturation of miRNAs. (D) m6A modification plays a regulatory role in lncRNA to affect the RNA-RNA interaction function of lncRNA. (E) m6A modification plays a regulatory role in circRNA to promote its’ translation.