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Differentiation of the SH-SY5Y Human Neuroblastoma Cell Line
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Differential m

Jiangbo Wei1, Fange Liu1, Zhike Lu2

  • 1Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57 Street, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, 929 East 57 Street, Chicago, IL 60637, USA.

Molecular Cell
|September 11, 2018
PubMed
Summary
This summary is machine-generated.

Fat mass and obesity-associated protein (FTO) removes methyl groups from RNA, impacting gene expression and translation. FTO

Keywords:
FTOcap m(6)A(m)cytoplasmic demethylationm(6)Anuclear m(6)A demethylationsnRNA demethylationtRNA m(1)A demethylationtranslation regulation

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Area of Science:

  • Molecular Biology
  • RNA Modification
  • Gene Regulation

Background:

  • FTO is the first identified RNA demethylase.
  • It targets N6-methyladenosine (m6A) and N6, 2-O-dimethyladenosine (m6Am) modifications.
  • FTO's role in various RNA species is not fully understood.

Purpose of the Study:

  • To investigate the cellular distribution and substrate specificity of FTO.
  • To determine the impact of FTO-mediated demethylation on RNA transcript levels.
  • To explore FTO's direct role in translational regulation.

Main Methods:

  • Analysis of FTO cellular distribution across different cell lines.
  • RNA binding assays to identify FTO targets.
  • Quantification of RNA modifications and transcript levels.
  • Investigation of FTO's effect on protein translation.

Main Results:

  • FTO cellular distribution varies, influencing its access to RNA substrates.
  • FTO demethylates m6A and m6Am in mRNA and snRNA, and m1A in tRNA.
  • FTO demethylation of internal m6A in mRNA affects transcript levels more than cap m6Am.
  • FTO directly represses translation via m1A tRNA demethylation.

Conclusions:

  • FTO exhibits broad substrate specificity, acting on m6A, m6Am, and m1A modifications.
  • FTO's demethylation activity impacts mRNA levels and translational efficiency.
  • FTO plays a significant role in RNA modification and gene expression regulation.