Related Experiment Video
Updated: Jan 5, 2026
Protocol for the Differentiation of Human Induced Pluripotent Stem Cells into Mixed Cultures of Neurons and Glia for Neurotoxicity Testing
Published on: June 9, 2017
Rifampicin attenuates rotenone-treated microglia inflammation via improving lysosomal function
Yanran Liang1, Dezhi Zheng2, Sudan Peng3
1Department of Neurology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China 510120.
Rifampicin reduces inflammation in Parkinson's disease models by enhancing autophagy and lysosome function. It increases ATP6V0A1 expression, crucial for clearing cellular waste and reducing inflammatory markers in microglia.
Area of Science:
- Neuroscience
- Cell Biology
- Immunology
Background:
- Lysosome dysfunction and impaired autophagy flux are implicated in neurodegenerative disease progression, particularly Parkinson's disease (PD).
- Microglia-mediated inflammation is a key factor in PD pathogenesis.
- Rifampicin has shown potential in reducing rotenone-induced microglia inflammation by enhancing autophagy, but the underlying mechanism requires elucidation.
Purpose of the Study:
- To investigate the precise mechanism by which rifampicin attenuates rotenone-induced inflammation in human microglia (HM).
- To determine rifampicin's effect on autophagy flux, lysosomal function, and specific inflammatory pathways in microglia exposed to rotenone.
Main Methods:
- Human microglia (HM) cells were pretreated with rifampicin followed by rotenone exposure.
- Gene expression of inflammatory cytokines (IL-1β, IL-6) and autophagy markers (LC3-II/LC3-I) were analyzed.
- Autophagosome and autolysosome levels were assessed using RFP-GFP-LC3B transfection.
- The role of ATP6V0A1 was investigated through gene knockdown experiments.
Main Results:
- Rifampicin pretreatment suppressed IL-1β and IL-6 expression by inhibiting JNK activation in rotenone-induced microglia.
- This anti-inflammatory effect was reversed by chloroquine, indicating an autophagy-dependent mechanism.
- Rifampicin improved autophagy flux, increased autolysosomes, and decreased autophagosomes.
- Rifampicin enhanced ATP6V0A1 expression, which was essential for maintaining lysosome acidification and autophagosome-lysosome fusion.
Conclusions:
- Rifampicin attenuates rotenone-induced microglia inflammation partially by upregulating ATP6V0A1, thereby enhancing autophagy flux and lysosomal function.
- Modulating lysosomal function with rifampicin presents a potential therapeutic strategy for Parkinson's disease.
