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Updated: Jun 21, 2025
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
SDS3 regulates microglial inflammation by modulating the expression of the upstream kinase ASK1 in the p38 MAPK
Jian Shen1, Wenjia Lai2, Zeyang Li3
1Department of General Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China.
Background:
Microglia, the main innate immune cells in the central nervous system, are key drivers of neuroinflammation, which plays a crucial role in the pathogenesis of neurodegenerative diseases. The Sin3/histone deacetylase (HDAC) complex, a highly conserved multiprotein co-repressor complex, primarily performs transcriptional repression via deacetylase activity; however, the function of SDS3, which maintains the integrity of the complex, in microglia remains unclear.
Methods:
To uncover the regulatory role of the transcriptional co-repressor SDS3 in microglial inflammation, we used chromatin immunoprecipitation to identify SDS3 target genes and combined with transcriptomics and proteomics analysis to explore expression changes in cells following SDS3 knocking down. Subsequently, we validated our findings through experimental assays.
Results:
Our analysis revealed that SDS3 modulates the expression of the upstream kinase ASK1 of the p38 MAPK pathway, thus regulating the activation of signaling pathways and ultimately influencing inflammation.
Conclusions:
Our findings provide important evidence of the contributions of SDS3 toward microglial inflammation and offer new insights into the regulatory mechanisms of microglial inflammatory responses.
Insights
SDS3 regulates microglial inflammation by controlling the ASK1 kinase in the p38 MAPK pathway. This finding offers new insights into neuroinflammation mechanisms in neurodegenerative diseases.
Area of Science:
- Neuroscience
- Immunology
- Molecular Biology
Background:
- Microglia are key immune cells in the central nervous system, driving neuroinflammation in neurodegenerative diseases.
- The Sin3/histone deacetylase (HDAC) complex is a transcriptional repressor, but SDS3's role in microglia is unknown.
Purpose of the Study:
- To investigate the function of SDS3 in microglial inflammatory responses.
- To elucidate the regulatory mechanisms of SDS3 in the central nervous system.
Main Methods:
- Chromatin immunoprecipitation to identify SDS3 target genes.
- Transcriptomics and proteomics to analyze gene expression changes after SDS3 knockdown.
- Experimental validation of findings.
Main Results:
- SDS3 regulates the expression of ASK1, an upstream kinase in the p38 MAPK pathway.
- SDS3 influences signaling pathway activation and subsequent inflammation in microglia.
Conclusions:
- SDS3 plays a significant role in microglial inflammation.
- This study provides novel insights into the regulation of microglial inflammatory responses.
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