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Related Concept Videos

Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Updated: Jul 6, 2026

Stimulating and Analyzing Adult Neurogenesis in the Drosophila Central Brain
06:31

Stimulating and Analyzing Adult Neurogenesis in the Drosophila Central Brain

Published on: October 8, 2021

Neurogenesis directed by Sirt1.

Sergiy Libert1, Dena Cohen, Leonard Guarente

  • 1Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.

Nature Cell Biology
|April 2, 2008
PubMed
Summary

Neuronal stem cell differentiation is crucial for brain function. Stress and inflammation promote astrocyte production by altering the anti-aging gene Sirt1, impacting brain health.

Area of Science:

  • Neuroscience
  • Stem Cell Biology
  • Molecular Biology

Background:

  • Neuronal stem cells differentiate into neurons or astrocytes, essential for brain function.
  • Oxidative stress and inflammation are implicated in various neurological conditions.

Discussion:

  • This study reveals that oxidative stress and inflammation influence neuronal stem cell fate.
  • These environmental factors bias differentiation towards astrocytes by modulating the activity of Sirt1, an anti-aging gene.

Key Insights:

  • The anti-aging gene Sirt1 plays a critical role in regulating neuronal stem cell differentiation under stress.
  • Findings establish a link between a longevity gene and the response of neural stem cells to stress and inflammation.

Outlook:

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Related Experiment Videos

Last Updated: Jul 6, 2026

Stimulating and Analyzing Adult Neurogenesis in the Drosophila Central Brain
06:31

Stimulating and Analyzing Adult Neurogenesis in the Drosophila Central Brain

Published on: October 8, 2021

Assaying Circuit Specific Regulation of Adult Hippocampal Neural Precursor Cells
08:52

Assaying Circuit Specific Regulation of Adult Hippocampal Neural Precursor Cells

Published on: July 24, 2019

Growing Neural Stem Cells from Conventional and Nonconventional Regions of the Adult Rodent Brain
11:27

Growing Neural Stem Cells from Conventional and Nonconventional Regions of the Adult Rodent Brain

Published on: November 18, 2013

  • Further research can explore therapeutic strategies targeting Sirt1 to modulate stem cell differentiation for brain repair.
  • Understanding these mechanisms could offer new avenues for treating age-related neurological disorders.