20-Deoxyingenol Activates Mitophagy Through TFEB and Promotes Functional Recovery After Spinal Cord Injury

Chenyu Wu1,2,3, Yu Chen1,2,3, Ximiao Chen1,2,3

  • 1Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China.

PubMed

Insights

20-Deoxyingenol (20-DOI) treatment improves functional recovery after spinal cord injury (SCI) by promoting mitophagy and inhibiting neural cell apoptosis. This compound shows promise as a novel therapeutic strategy for SCI.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Pharmacology

Background:

  • Spinal cord injury (SCI) causes significant neurological deficits due to complex pathophysiological processes.
  • Mitochondrial dysfunction is a key factor in SCI pathogenesis, and mitophagy offers a protective mechanism.
  • Current treatments for SCI are limited, with a need for novel therapeutic agents targeting mitophagy.

Purpose of the Study:

  • To investigate the therapeutic potential of 20-Deoxyingenol (20-DOI) in a rat model of spinal cord injury.
  • To elucidate the underlying mechanisms of 20-DOI action, focusing on mitophagy and apoptosis.
  • To explore the role of TFEB-related signaling pathways in 20-DOI-mediated neuroprotection.

Main Methods:

  • Establishment of a rat model for spinal cord injury (SCI).
  • Assessment of functional recovery and neurological outcomes post-injury.
  • Analysis of mitophagy, apoptosis, and TFEB signaling using Western blotting and immunofluorescence.

Main Results:

  • 20-DOI significantly enhanced functional recovery in SCI rats.
  • 20-DOI treatment reduced neural cell apoptosis following TBHP stimulation.
  • The study identified restored autophagic flux, induced mitophagy, reduced cytochrome C accumulation, and inhibited apoptosis as key mechanisms.
  • 20-DOI was found to promote TFEB nuclear translocation, suggesting a role in regulating mitophagy.

Conclusions:

  • 20-Deoxyingenol (20-DOI) demonstrates significant neuroprotective effects and promotes functional recovery after spinal cord injury.
  • 20-DOI acts by inducing mitophagy and inhibiting apoptosis, potentially through TFEB pathway activation.
  • 20-DOI represents a promising novel therapeutic candidate for treating spinal cord injury.

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