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Updated: Jun 4, 2025

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Published on: August 23, 2022
Compound FLZ attenuates neuroinflammation through inhibiting Src/PTEN/Akt signaling pathway
Fang-Fang Li1, Yuan-Peng Zheng1, Gen Li1
1State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
Abstract:
Compound FLZ has neuroprotective effects on Parkinson's disease (PD), while the precise mechanism remains unclear. In this study, we found that FLZ decreased PTEN/Akt activity in LPS-challenged BV2 cells. Neuroinflammatory responses suppressed by FLZ were abolished when PTEN or Src was inhibited. Additionally, FLZ weakened the interactions of Src and PTEN, and attenuated Src phosphorylation once PETN was inhibited, but failed to decrease PTEN phosphorylation when Src was silenced. Eventually, we elaborated that FLZ bound to Src directly and inhibited its activity. Collectively, FLZ attenuated neuroinflammation through inhibiting Src/PTEN/Akt pathway, paving the way for clinical use of FLZ to treat PD.
Insights
Compound FLZ offers neuroprotection for Parkinson's disease (PD) by inhibiting the Src/PTEN/Akt pathway. This research clarifies FLZ's mechanism, suggesting its potential for treating PD.
Area of Science:
- Neuroscience
- Pharmacology
Background:
- Parkinson's disease (PD) is a neurodegenerative disorder with limited treatment options.
- The compound FLZ demonstrates neuroprotective effects, but its mechanism of action in PD is not fully understood.
Purpose of the Study:
- To elucidate the precise mechanism by which FLZ exerts neuroprotection in Parkinson's disease.
- To investigate the role of the PTEN/Akt signaling pathway in FLZ's therapeutic effects.
Main Methods:
- Utilized LPS-challenged BV2 cells to model neuroinflammation.
- Assessed the effects of FLZ on PTEN/Akt activity, Src phosphorylation, and protein interactions.
- Investigated the direct binding of FLZ to Src kinase.
Main Results:
- FLZ decreased PTEN/Akt activity in LPS-challenged BV2 cells.
- FLZ's suppression of neuroinflammation was dependent on PTEN and Src activity.
- FLZ directly binds to and inhibits Src kinase activity, thereby attenuating the Src/PTEN/Akt pathway.
Conclusions:
- FLZ exerts neuroprotective effects against neuroinflammation in Parkinson's disease by directly inhibiting Src kinase.
- The inhibition of the Src/PTEN/Akt pathway is the key mechanism underlying FLZ's therapeutic potential in PD.
- FLZ represents a promising therapeutic agent for clinical application in Parkinson's disease treatment.
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