Cited by 35RNA modifications and cancerNeurogenesis and neuroplasticity mechanismsRNA regulation and disease

Mettl3‐mediated m 6 A modification of Lrp2 facilitates neurogenesis through Ythdc2 and elicits antidepressant‐like effects

Xu, Biao, Li, Qingfeng, Wu, Yuanfei, Wang, Huan, Xu, Jiamin, Liu, Hui, Xuan, Aiguo·2022·The FASEB Journal

Abstract

N 6 ‐methyladenosine (m 6 A) is the most abundant mRNA modification affecting diverse biological processes. However, the functions and precise mechanisms of m 6 A signaling in adult hippocampal neurogenesis and neurogenesis‐related depression remain largely enigmatic. We found that depletion of Mettl3 or Mettl14 in neural stem cells (NSCs) dramatically reduced m 6 A abundance, proliferation, and neuronal genesis, coupled with enhanced glial differentiation. Conversely, overexpressing Mettl3 promoted proliferation and neuronal differentiation. Mechanistically, the m 6 A modification of Lrp2 mRNA by Mettl3 enhanced its stability and translation efficiency relying on the reader protein Ythdc2, which in turn promoted neurogenesis. Importantly, mice lacking Mettl3 manifested reduced hippocampal neurogenesis, which could contribute to spatial memory decline, and depression‐like behaviors. We found that these defective behaviors were notably reversed by Lrp2 overexpression. Moreover, Mettl3 overexpression in the hippocampus of depressive mice rescues behavioral defects. Our findings uncover the biological role of m 6 A modification in Lrp2‐mediated neurogenesis via m 6 A‐binding protein Ythdc2, and propose a rationale that targeting Mettl3‐Ythdc2‐Lrp2 axis regulation of neurogenesis might serve as a promising antidepressant strategy.

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Crossref · 10.1096/fj.202200133rr

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Authors
Xu, B., Li, Q., Wu, Y., Wang, H., Xu, J., Liu, H., & Xuan, A.
Affiliations
Second Affiliated Hospital of Guangzhou Medical University (CN)
Corresponding author
Xuan, Aiguo
Venue
The FASEB Journal
Publisher
Wiley
Published
2022-06-18
Volume
36
Issue
7
Pages
e22392-e22392
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W4283073942
Cited by
35
References
43
Citations by year
2026: 11 · 2025: 7 · 2024: 9 · 2023: 6 · 2022: 2
FWCI
1.96
Type
journal article
Language
en
Open access
closed
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (81371217)
  • Natural Science Foundation of Guangdong Province (2022A1515012121)
  • Guangzhou Medical University (JCXKJS2021C01, JCXKJS2021D08, JCXKJS2022A09)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
N6-methyladenosine, m6A RNA methylation, METTL3, METTL14, megalin, YTHDC2, mRNA stability, translation efficiency, adult hippocampal neurogenesis, neural stem cells, glial differentiation, depression, antidepressant-like effects, spatial memory
MeSH terms
Adenosine, Animals, Methyltransferases, RNA, Messenger, RNA Helicases, Low Density Lipoprotein Receptor-Related Protein-2, Mice, Neurogenesis

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