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Long noncoding RNA mediates stroke-induced neurogenesis.

Baoyan Fan1, Wanlong Pan1, Xinli Wang1

  • 1Department of Neurology, Henry Ford Health System, Detroit, Michigan, USA.

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|April 30, 2020
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Summary
This summary is machine-generated.

Long noncoding RNA H19 is crucial for neural stem cell (NSC) function after stroke. Its regulation impacts cell survival, proliferation, and differentiation, influencing recovery from ischemic injury.

Keywords:
H19epigeneticslong noncoding RNAneurogenesisstroke

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Neurogenesis, the creation of new neurons, aids recovery after stroke.
  • Long noncoding RNAs (lncRNAs) regulate stem cell behavior, but their role in stroke-related neurogenesis is unclear.

Purpose of the Study:

  • To investigate the role of lncRNAs in stroke-induced neurogenesis.
  • To identify specific lncRNAs involved in neural stem cell (NSC) regulation following focal cerebral ischemia.

Main Methods:

  • Focal cerebral ischemia model in rats.
  • Neural stem cells (NSCs) from the subventricular zone (SVZ).
  • RNA sequencing, gene expression analysis, and chromatin remodeling protein interaction studies.

Main Results:

  • H19 was the most upregulated lncRNA in NSCs after ischemic stroke.
  • H19 deletion impaired NSC proliferation and differentiation while increasing cell death.
  • H19 interacts with EZH2 and SUZ12 to regulate cell cycle genes and neurogenesis-related microRNAs.
  • Inactivating H19 in NSCs reduced functional recovery in ischemic rats.

Conclusions:

  • H19 plays a critical role in regulating NSC behavior and neurogenesis post-stroke.
  • H19 epigenetic regulation influences stroke recovery by modulating cell cycle and microRNA pathways.