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Updated: Jul 27, 2026

Laser Capture Microdissection of Enriched Populations of Neurons or Single Neurons for Gene Expression Analysis After Traumatic Brain Injury
13:32

Laser Capture Microdissection of Enriched Populations of Neurons or Single Neurons for Gene Expression Analysis After Traumatic Brain Injury

Published on: April 10, 2013

An orchestrated gene expression component of neuronal programmed cell death revealed by cDNA array analysis

L W Chiang1, J M Grenier, L Ettwiller

  • 1Millennium Pharmaceuticals, 640 Memorial Drive, Cambridge, MA 02139, USA. chiang@mpi.com

Proceedings of the National Academy of Sciences of the United States of America
|February 28, 2001
PubMed

Insights

Programmed cell death (PCD) in neurons requires new RNA synthesis. This study identified hundreds of regulated genes during PCD, with a core set shared across different neuronal death models.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Programmed cell death (PCD) is crucial for neuronal development and disease.
  • De novo RNA synthesis is necessary for PCD, but gene regulation remains unclear.

Purpose of the Study:

  • To investigate the gene expression patterns during PCD in cerebellar granule neurons.
  • To identify specific genes and pathways regulated by different PCD-inducing stimuli.

Main Methods:

  • Utilized a brain-biased cDNA array (over 7,500 genes) to profile gene expression.
  • Examined gene regulation in response to potassium withdrawal, combined potassium/serum withdrawal, and kainic acid administration.

Main Results:

  • Hundreds of genes were significantly regulated in distinct temporal waves during PCD.
  • Identified known PCD-related genes among the regulated targets.
  • A subset of genes was consistently regulated across all tested PCD models.

Conclusions:

  • Neuronal PCD involves complex, wave-like gene expression changes.
  • Distinct PCD-inducing signals can converge on a shared set of regulatory genes.
  • This provides insight into the molecular mechanisms underlying neuronal cell death pathways.

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