Journal
MOLECULAR CELL
Volume 69, Issue 6, Pages 1028-+Publisher
CELL PRESS
DOI: 10.1016/j.molcel.2018.02.015
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Funding
- Howard Hughes Medical Institute Funding Source: Medline
- NHGRI NIH HHS [R01 HG008688] Funding Source: Medline
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N-6-methyladenosine (m(6)A) is an abundant modification in eukaryotic mRNA, regulating mRNA dynamics by influencing mRNA stability, splicing, export, and translation. However, the precisem m(6)A regulating machinery still remains incompletely understood. Here we demonstrate that ZC3H13, a zinc-finger protein, plays an important role in modulating RNA m(6)A methylation in the nucleus. We show that knockdown of Zc3h13 in mouse embryonic stem cell significantly decreases global m(6)A level on mRNA. Upon Zc3h13 knockdown, a great majority of WTAP, Virilizer, and Hakai translocate to the cytoplasm, suggesting that Zc3h13 is required for nuclear localization of the Zc3h13-WTAP-Virilizer-Hakai complex, which is important for RNA m(6)A methylation. Finally, Zc3h13 depletion, as does WTAP, Virilizer, or Hakai, impairs self-renewal and triggers mESC differentiation. Taken together, our findings demonstrate that Zc3h13 plays a critical role in anchoring WTAP, Virilizer, and Hakai in the nucleus to facilitate m(6)A methylation and to regulate mESC self-renewal.
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