BackgroundN6-methyladenosine (m6A) is an important epitranscriptomic mark with high abundance in the brain. Recently, it has been found to be involved in the regulation of memory formation and mammalian cortical neurogenesis. However, while it is now established that m6A methylation occurs in a spatially restricted manner, its functions in specific brain regions still await elucidation.ResultsWe identify widespread and dynamic RNA m6A methylation in the developing mouse cerebellum and further uncover distinct features of continuous and temporal-specific m6A methylation across the four postnatal developmental processes. Temporal-specific m6A peaks from P7 to P60 exhibit remarkable changes in their distribution patterns along the mRNA transcripts. We also show spatiotemporal-specific expression of m6A writers METTL3, METTL14, and WTAP and erasers ALKBH5 and FTO in the mouse cerebellum. Ectopic expression of METTL3 mediated by lentivirus infection leads to disorganized structure of both Purkinje and glial cells. In addition, under hypobaric hypoxia exposure, Alkbh5-deletion causes abnormal cell proliferation and differentiation in the cerebellum through disturbing the balance of RNA m6A methylation in different cell fate determination genes. Notably, nuclear export of the hypermethylated RNAs is enhanced in the cerebellum of Alkbh5-deficient mice exposed to hypobaric hypoxia.ConclusionsTogether, our findings provide strong evidence that RNA m6A methylation is controlled in a precise spatiotemporal manner and participates in the regulation of postnatal development of the mouse cerebellum.
RNA m6A methylation participates in regulation of postnatal development of the mouse cerebellum
Chunhui Ma,Mengqi Chang,Hongyi Lv,Zhi-wei Zhang,Weilong Zhang,Xue He,Gaolang Wu,Shunli Zhao,Yao Zhang,Di Wang,Xufei Teng,Chunying Liu,Qing Li,A. Klungland,Y. Niu,Shuhui Song,W. Tong
Published 2018 in Genome Biology
ABSTRACT
PUBLICATION RECORD
- Publication year
2018
- Venue
Genome Biology
- Publication date
2018-05-31
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- alkbh5
An m6A eraser enzyme that removes m6A modifications from RNA and whose deletion disrupts methylation balance in the cerebellum.
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - hypobaric hypoxia
An experimental condition of reduced atmospheric oxygen pressure used to probe m6A-related regulatory mechanisms in the cerebellum.
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - m6a methylation
An epitranscriptomic RNA modification (N6-methyladenosine) found at high abundance in the brain that regulates RNA fate and function.
Aliases: N6-methyladenosine, m6A
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - mettl3
An m6A writer enzyme that deposits m6A modifications on RNA transcripts and shows spatiotemporal-specific expression in the cerebellum.
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - mouse cerebellum
The brain region studied for dynamic RNA m6A methylation changes during postnatal development.
Aliases: cerebellum
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - postnatal development
The developmental period after birth (P7 to P60) during which dynamic and temporal-specific m6A methylation patterns were characterized in the cerebellum.
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review - purkinje cells
A type of large cerebellar neuron whose structural organization is disrupted by ectopic METTL3 expression.
All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
REFERENCES
Showing 1-85 of 85 references · Page 1 of 1