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PTEN/PI3K and MAPK signaling in protection and pathology following CNS injuries

Chandler L Walker1, Nai-Kui Liu2, Xiao-Ming Xu1

  • 1Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA ; Department of Anatomy & Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA ; Departmentof Neurological Surgery, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA ; Goodman Campbell Brain and Spine, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA.

Frontiers in Biology
|December 19, 2013
PubMed

Insights

This review explores how PTEN/PI3K and MAPK signaling pathways influence neurodegeneration after brain and spinal cord injuries. Targeting these pathways offers potential for improved neurological outcomes and neuroprotection.

Area of Science:

  • Neuroscience
  • Cellular Biology
  • Pathology

Background:

  • Traumatic brain and spinal cord injuries cause widespread neurodegeneration via necrosis and programmed cell death.
  • Key contributors to damage include inflammation, oxidative stress, excitotoxicity, and metabolic dysregulation.
  • Modulating intracellular signaling cascades is a promising therapeutic strategy for CNS injury.

Purpose of the Study:

  • To review the influence of PTEN/PI3K and MAPK signaling pathways on neurodegeneration, neuroprotection, and repair after CNS injury.
  • To explore the potential of targeting these pathways for therapeutic advancement.

Main Methods:

  • Literature review of studies investigating PTEN/PI3K and MAPK signaling in CNS injury models.
  • Analysis of evidence on the role of these pathways in cellular responses to traumatic insult.
  • Examination of mechanisms involving pathway inhibition or activation.

Main Results:

  • Both PTEN/PI3K and MAPK pathways play critical roles in normal and pathological CNS conditions.
  • Activation of these pathways can impact anatomical and functional recovery in CNS disorders.
  • Specific modulation of these pathways influences downstream effects relevant to injury outcome.

Conclusions:

  • PTEN/PI3K and MAPK signaling pathways are crucial mediators of cellular responses to brain and spinal cord injury.
  • Understanding their roles in neurodegeneration, neuroprotection, and repair is vital.
  • Targeting these pathways holds significant potential for improving neurological outcomes after CNS injury.
Keywords:
MAPKPTENaxon regenerationneuroprotectionspinal cord injurytraumatic brain injury

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