Related Experiment Video
Updated: Sep 24, 2025
A Neurosphere Assay to Evaluate Endogenous Neural Stem Cell Activation in a Mouse Model of Minimal Spinal Cord Injury
Published on: September 13, 2018
RGS6 Drives Spinal Cord Injury by Inhibiting AMPK Pathway in Mice
Wenxin Dao1, Zhe Xiao1, Weize Yang1
1Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, 430060 Hubei, China.
Objective:
Oxidative stress and inflammation play critical roles in the pathogenesis of spinal cord injury (SCI). Regulator of G protein signaling 6 (RGS6) is involved in controlling ROS generation and inflammatory response under different contexts. This study is aimed at investigating its role and underlying mechanism in SCI.
Methods:
Contusive SCI mouse models were generated, and lentiviral vectors were injected to silence or overexpress RGS6 in the spinal cord. To inhibit AMP-activated protein kinase (AMPK) activity, SCI mice were intraperitoneally injected with compound C (20 mg/kg) every two days. Oxidative and inflammatory markers were detected.
Results:
Spinal RGS6 expression was elevated upon SCI stimulation. RGS6 knockdown suppressed, while RGS6 overexpression aggravated oxidative stress, inflammation, and SCI in mice. Mechanistically, RGS6 elevation during SCI deactivated AMPK pathway, thereby exacerbating oxidative stress and inflammation in SCI mice.
Conclusion:
RGS6 is required for the initiation and progression of SCI, and knocking down RGS6 may provide promising therapeutic strategies for SCI patients.
Insights
Regulator of G protein signaling 6 (RGS6) exacerbates spinal cord injury (SCI) by deactivating the AMPK pathway. Inhibiting RGS6 shows promise as a therapeutic strategy for SCI.
Area of Science:
- Neuroscience
- Molecular Biology
Background:
- Spinal cord injury (SCI) pathogenesis involves oxidative stress and inflammation.
- Regulator of G protein signaling 6 (RGS6) influences reactive oxygen species (ROS) generation and inflammatory responses.
Purpose of the Study:
- Investigate the role of RGS6 in SCI.
- Elucidate the underlying mechanism of RGS6 in SCI pathogenesis.
Main Methods:
- Generated contusive SCI mouse models.
- Utilized lentiviral vectors for RGS6 knockdown or overexpression.
- Administered compound C to inhibit AMP-activated protein kinase (AMPK) activity.
- Assessed oxidative and inflammatory markers.
Main Results:
- RGS6 expression increased following SCI.
- RGS6 knockdown reduced oxidative stress, inflammation, and SCI severity.
- RGS6 overexpression worsened SCI outcomes.
- RGS6 elevation deactivated the AMPK pathway, exacerbating SCI.
Conclusions:
- RGS6 is crucial for SCI initiation and progression.
- RGS6 knockdown presents a potential therapeutic approach for SCI.
