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Anti-apoptotic BCL-2 family proteins in acute neural injury

Ujval Anilkumar1, Jochen H M Prehn1

  • 1Department of Physiology and Medical Physics, Centre for the Study of Neurological Disorders, Royal College of Surgeons in Ireland Dublin, Ireland.

Frontiers in Cellular Neuroscience
|October 18, 2014
PubMed

Insights

Anti-apoptotic BCL-2 proteins regulate neuronal survival and development. These proteins impact neuronal responses to stress and injury, and also influence mitochondrial function and calcium homeostasis.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Cellular stress triggers survival and death pathways, often involving mitochondria.
  • Pro- and anti-apoptotic B-cell lymphoma 2 (BCL-2) proteins regulate these mitochondrial pathways.
  • Dysregulation of these proteins is implicated in neuronal injury and disease.

Purpose of the Study:

  • To review the role of anti-apoptotic BCL-2 family proteins in neuronal survival, development, and injury.
  • To explore the functions of BCL-2, BCL-XL, MCL-1, and BCL-W in neuronal homeostasis.
  • To discuss novel roles in mitochondrial bioenergetics and calcium regulation.

Main Methods:

  • Literature review of studies on BCL-2 family proteins in neuronal systems.
  • Analysis of research on neuronal development and pathophysiological conditions.
  • Examination of recent findings on mitochondrial and calcium signaling.

Main Results:

  • Anti-apoptotic BCL-2 proteins (BCL-2, BCL-XL, MCL-1, BCL-W) are crucial for neuronal survival during development and in response to various stresses.
  • These proteins mediate neuronal responses to trophic factor withdrawal, ischemia, excitotoxicity, oxidative stress, and energy stress.
  • Emerging evidence shows these proteins also regulate mitochondrial bioenergetics and neuronal calcium homeostasis independently of apoptosis.

Conclusions:

  • Anti-apoptotic BCL-2 proteins are key regulators of neuronal fate, with diverse roles beyond classical cell death inhibition.
  • Understanding their functions is critical for developing therapeutic strategies against neuronal injury and neurodegenerative diseases.
  • Further research into their non-apoptotic functions may reveal new therapeutic targets.
Keywords:
BCL-2apoptosisexcitotoxcityischemiamitochondrianeurodegenerationneuronal developmentneuronal injury

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