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UPF1 promotes rapid degradation of m(6)A-containing RNAsopen access

Authors
Boo, Sung HoHa, HongseokLee, YujinShin, Min-KyungLee, SenaKim, Yoon Ki
Issue Date
24-5월-2022
Publisher
CELL PRESS
Keywords
CP: Molecular biology; m6A; mRNA degradation; N6-methyladenosine; nonsense-mediated mRNA decay; PNRC2; RNA modification; UPF1; YTHDF2
Citation
CELL REPORTS, v.39, no.8
Indexed
SCIE
SCOPUS
Journal Title
CELL REPORTS
Volume
39
Number
8
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143047
DOI
10.1016/j.celrep.2022.110861
ISSN
2211-1247
Abstract
N-6-methyladenosine (m(6)A) is the most prevalent internal modification in eukaryotic mRNAs and affects RNA processing and metabolism. When YTHDF2, an m(6)A-recognizing protein, binds to m(6)A, it facilitates the destabilization of m(6)A-containing RNAs (m(6)A RNAs). Here, we demonstrate that upstream frameshift 1 (UPF1), a key factor for nonsense-mediated mRNA decay, interacts with YTHDF2, thereby triggering rapid degradation of m(6)A RNAs. The UPF1-mediated m(6)A RNA degradation depends on a specific interaction between UPF1 and N-terminal residues 101-168 of YTHDF2. UPF1 ATPase/helicase activities, and UPF1 interaction with proline-rich nuclear receptor coactivator 2 (PNRC2), a decapping-promoting factor preferentially involved in nonsense-mediated mRNA decay. Furthermore, transcriptome-wide analyses show that YTHDF2-bound mRNAs that are not substrates for HRSP12-RNase P/MRP-mediated endoribonucleolytic cleavage are destabilized with a higher dependency on UPF1. Collectively, our data indicate dynamic and multilayered regulation of the stability of m(6)A RNAs and highlight the multifaceted role of UPF1 in mRNA decay.
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