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Published on: April 9, 2019

Molecular Roles of Cdk5 in Pain Signaling

Elias Utreras1, Akira Futatsugi, Tej Kumar Pareek

  • 1Functional Genomics Section, Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892.

Drug Discovery Today. Therapeutic Strategies
|January 22, 2011
PubMed

Insights

Cyclin-dependent kinase 5 (Cdk5) activation is crucial in pain signaling. Targeting Cdk5 and its activators may offer new treatments for neuropathic pain.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pharmacology

Background:

  • Nociceptive signaling involves complex cellular pathways in the peripheral nervous system.
  • Cyclin-dependent kinase 5 (Cdk5) is a key neuronal kinase with roles in nervous system development and disease.
  • The specific role of Cdk5 in pain signaling remains incompletely understood.

Purpose of the Study:

  • To investigate the role of Cdk5 in pain signaling pathways.
  • To determine if Cdk5 activity is altered during inflammation-induced pain.
  • To identify molecular targets of Cdk5 in nociceptive neurons.

Main Methods:

  • Induction of experimental inflammation in mouse hind paws.
  • Measurement of Cdk5 and p35 mRNA and protein levels.
  • Assay of Cdk5 kinase activity in nociceptive neurons.
  • Identification of Cdk5 phosphorylation targets, including TRPV1.
  • Investigation of TNF-α signaling pathways regulating Cdk5 activity.

Main Results:

  • Experimental inflammation increased Cdk5 and p35 expression and Cdk5 activity in nociceptive neurons.
  • Cdk5 was found to phosphorylate TRPV1, a critical ion channel in pain transmission.
  • Tumor necrosis factor alpha (TNF-α) was shown to increase Cdk5 activity via Egr-1 and p35 induction during inflammation.
  • These findings implicate Cdk5 in the inflammatory pain signaling cascade.

Conclusions:

  • Cdk5 plays a significant role in modulating pain signaling.
  • Cdk5 and its activators represent potential therapeutic targets for novel analgesic drug development.
  • Targeting Cdk5 may provide a strategy for treating neuropathic pain.

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