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Partial Sciatic Nerve Ligation: A Mouse Model of Chronic Neuropathic Pain to Study the Antinociceptive Effect of Novel Therapies
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IKBKB siRNA-Encapsulated Poly (Lactic-co-Glycolic Acid) Nanoparticles Diminish Neuropathic Pain by Inhibiting
Seounghun Lee1,2, Hyo-Jung Shin3,4, Chan Noh2,5
1Department of Anesthesiology and Pain Medicine, Chungnam National University Sejong Hospital, 20 Bodeum 7-ro, Sejong 30099, Korea.
International Journal of Molecular Sciences
|June 2, 2021
Summary
Targeting inhibitor of NF-κB kinase subunit beta (IKBKB) with siRNA-loaded nanoparticles reduced neuropathic pain in rats. This approach effectively suppressed microglial activation and inflammatory responses, offering a promising therapeutic strategy.
Area of Science:
- Neuroscience
- Pharmacology
- Biotechnology
Background:
- Nuclear factor-kappa B (NF-κB) activation in microglia is crucial for neuropathic pain progression.
- Inhibitor of kappa B kinase subunit beta (IKBKB) degrades inhibitor of kappa B (IκB), thus promoting NF-κB activation.
- Targeting microglial NF-κB signaling presents a potential therapeutic avenue for neuropathic pain.
Purpose of the Study:
- To investigate the efficacy of IKBKB small interfering RNA (siRNA)-encapsulated poly (lactic-co-glycolic acid) (PLGA) nanoparticles in reducing neuropathic pain.
- To assess the impact of IKBKB siRNA delivery on microglial activity and inflammatory mediator secretion in a rat model.
- To explore the therapeutic potential of IKBKB gene silencing via PLGA nanoparticles for neuropathic pain management.
Main Methods:
- Establishment of a neuropathic pain model in rats using spinal nerve ligation (SNL).
- Intrathecal administration of IKBKB siRNA-encapsulated PLGA nanoparticles.
- Evaluation of pain responses through behavioral tests.
- Measurement of pro-inflammatory mediator secretion and NF-κB pathway activation.
Main Results:
- SNL rats treated with IKBKB siRNA-PLGA nanoparticles showed a significant reduction in mechanical allodynia.
- The treatment led to decreased secretion of pro-inflammatory mediators associated with NF-κB activation.
- IKBKB siRNA delivery effectively suppressed IKBKB expression, thereby inhibiting the inflammatory cascade.
Conclusions:
- Delivery of IKBKB siRNA using PLGA nanoparticles is an effective strategy to control neuroinflammation in neuropathic pain.
- This approach holds significant therapeutic potential for managing neuropathic pain by targeting microglial activation.
- Further research into IKBKB siRNA-PLGA nanoparticles is warranted for developing novel pain treatments.
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