Obacunone Promotes Functional Recovery After Spinal Cord Injury by Attenuating Neuroinflammation by Targeting the...

Area of Science:

• Neuroscience
• Pharmacology
• Biochemistry

Background:

• Spinal cord injury (SCI) involves complex secondary injury processes, including inflammation and apoptosis, which are critical for nerve damage.
• Obacunone (Oba), a natural limonoid, exhibits various pharmacological effects, but its specific role in SCI has not been clearly defined.

Purpose of the Study:

• To investigate the therapeutic potential of Obacunone (Oba) in mitigating secondary injury following spinal cord injury (SCI).
• To elucidate the underlying mechanisms of Oba's anti-inflammatory and anti-apoptotic effects in SCI models.

Main Methods:

• Network pharmacology and bioinformatics analyses predicted Oba's functions in SCI.
• In vivo studies utilized a mouse SCI model to assess motor function recovery and histomorphology.
• In vitro studies employed LPS-induced BV-2 microglial cells and a microglia-neuron co-culture system to evaluate anti-inflammatory and neuroprotective effects.

Main Results:

• Oba treatment improved motor function, neural repair, and reduced inflammation and apoptosis in vivo.
• Oba suppressed LPS-induced pro-inflammatory cytokine expression in BV-2 cells.
• Oba protected neurons from microglia-mediated apoptosis in co-culture systems, acting via the TLR4/MyD88/p38 MAPK pathway.

Conclusions:

• Obacunone (Oba) is identified as a promising compound for mitigating secondary injury post-SCI.
• Oba demonstrates efficacy in reducing inflammation and apoptosis, promoting nerve repair and functional recovery.
• These findings support Oba's potential for further therapeutic development in spinal cord injury treatment.