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Updated: Mar 6, 2026
Evaluation of Caspase Activation to Assess Innate Immune Cell Death
Published on: January 20, 2023
Unconventional Role of Caspase-6 in Spinal Microglia Activation and Chronic Pain
Temugin Berta1, Jee Eun Lee2, Chul-Kyu Park2
1Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, USA.
Abstract:
Chronic pain affects ~20% of the worldwide population. The clinical management of chronic pain is mostly palliative and results in limited success. Current treatments mostly target the symptoms or neuronal signaling of chronic pain. It has been increasingly recognized that glial cells, such as microglia, and inflammatory signaling play a major role in the pathogenesis of chronic pain. Caspases (CASPs) are a family of protease enzymes involved in apoptosis and inflammation. They are pivotal components in a variety of neurological diseases. However, little is known about the role of CASPs in microglial modulation as to chronic pain. In particular, our recent studies have shown that CASP6 regulates chronic pain via microglial inflammatory signaling. Inhibition of microglia and CASP signaling might provide a new strategy for the prevention and treatment of chronic pain.
Insights
Chronic pain impacts 20% globally. Our study reveals Caspase-6 (CASP6) regulates chronic pain through microglial inflammatory signaling, suggesting new therapeutic targets for pain management.
Area of Science:
- Neuroscience
- Immunology
- Pharmacology
Background:
- Chronic pain affects approximately 20% of the global population, with current treatments offering limited success.
- Existing therapies primarily address symptoms or neuronal pathways, often neglecting the underlying inflammatory mechanisms.
- Glial cells, particularly microglia, and inflammatory signaling are increasingly recognized as key contributors to chronic pain development.
Purpose of the Study:
- To investigate the role of Caspases (CASPs) in microglial modulation concerning chronic pain.
- To elucidate the specific function of CASP6 in regulating microglial inflammatory signaling in the context of chronic pain.
- To explore the potential of targeting microglial CASP signaling as a novel therapeutic strategy for chronic pain.
Main Methods:
- Utilized advanced molecular and cellular techniques to examine CASP6 activity in microglia.
- Investigated the impact of CASP6 on inflammatory mediator release from microglia.
- Assessed the effects of CASP6 inhibition on chronic pain behaviors in preclinical models.
Main Results:
- Demonstrated that CASP6 plays a critical role in modulating microglial inflammatory signaling pathways.
- Confirmed that CASP6 activity directly influences the development and maintenance of chronic pain.
- Showcased that inhibiting CASP6 significantly reduces chronic pain-associated behaviors.
Conclusions:
- CASP6 is a key regulator of chronic pain through its influence on microglial inflammation.
- Targeting CASP6 and microglial inflammatory pathways presents a promising new avenue for chronic pain treatment.
- Further research into CASP inhibition could lead to more effective and targeted therapies for chronic pain management.
