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Related Experiment Videos

Apoptosis and the nervous system.

P S Sastry1, K S Rao

  • 1Department of Biochemistry, School of Life Sciences, University of Hyderabad, India.

Journal of Neurochemistry
|January 5, 2000
PubMed
Summary
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Apoptosis, programmed cell death, is vital in nervous system development and implicated in neurodegenerative diseases. Research highlights various triggers and the involvement of Bcl proteins and caspases in neuronal apoptosis.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Apoptosis is a fundamental biological process crucial for nervous system development.
  • Dysregulation of apoptosis is linked to neurodegenerative diseases and aging.
  • Recent research has significantly advanced our understanding of neuronal apoptosis.

Purpose of the Study:

  • To review the progress in understanding neuronal apoptosis over the last 6-7 years.
  • To identify key apoptosis-inducing agents and pathways in the nervous system.
  • To elucidate the molecular mechanisms underlying neuronal cell death.

Main Methods:

  • Investigation of various neuronal preparations, including primary cultures and cell lines.
  • Analysis of in vivo studies.

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  • Identification and characterization of apoptosis-inducing agents and signaling pathways.

    • Main Results:

    • Several apoptosis-inducing agents identified: lack of neurotrophic support, neurotransmitters, neurotoxicants, protein phosphorylation modulators, calcium homeostasis modulators, DNA-damaging agents, oxidative stress, nitric oxide, and ceramides.
    • The Bcl family of proteins plays a critical role in the apoptotic pathway.
    • These proteins influence the processing of interleukin-1beta converting enzyme (ICE)/caspases.

    Conclusions:

    • Neuronal apoptosis involves multiple signaling pathways that can be cell-type and agent-dependent.
    • Most identified apoptotic pathways converge at the ICE/caspases step.
    • Further research is needed to fully establish the precise signaling cascades involved in neuronal apoptosis.