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PKR activation in neurodegenerative disease

Alyson L Peel1

  • 1The Buck Institute for Age Research, 8001 Redwood Blvd., Novato, CA 94945, USA. www.buckinstitute.org

Journal of Neuropathology and Experimental Neurology
|March 3, 2004
PubMed

Insights

The protein kinase PKR, an early responder to viral infection, is increasingly implicated in neurodegenerative diseases like Alzheimer's. This review explores the link between PKR's functions and neuropathological events.

Area of Science:

  • Molecular Biology
  • Neuroscience
  • Immunology

Background:

  • Interferon-inducible, double-stranded RNA-dependent protein kinase (PKR) is a key cellular mediator of antiviral responses.
  • PKR activation triggers diverse downstream effects, including protein translation shutdown, apoptosis, and inflammatory signaling pathways (JNK, p38 MAPK, NF-kappaB).

Purpose of the Study:

  • To investigate the emerging role of PKR in neurodegenerative diseases.
  • To discuss the potential overlap between PKR's known functions and the biochemical processes in neuropathologies.

Main Methods:

  • Literature review and synthesis of existing research on PKR.
  • Comparative analysis of PKR's cellular functions and reported molecular events in neurodegenerative diseases.

Main Results:

  • PKR activation is a documented cellular stress response.
  • Recent studies indicate PKR involvement in Huntington disease, Alzheimer disease, and amyotrophic lateral sclerosis.
  • Significant overlap exists between PKR-mediated cellular events and pathological hallmarks of neurodegeneration.

Conclusions:

  • The precise relationship between PKR and neurodegenerative diseases requires further elucidation.
  • PKR represents a potential therapeutic target or biomarker in neurodegenerative conditions.

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