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Updated: May 3, 2026
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
Published on: January 30, 2014
Soluble complement complex C5b-9 promotes microglia activation
Chao Yang1, Li Yang2, Yong Liu1
1Department of Neurology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Abstract:
Soluble C5b-9 has been described as a pro-inflammatory mediator that triggers cell activation rather than inducing cell death. Microglia is the most important immune cell involved in inflammatory response in the CNS. Although microglia activation induced by various stimuli has been well characterized, the role of C5b-9 in microglia has not been well studied. In the current experiment, we utilized assembled functional C5b-9 to treat microglia and analyzed the function. We found that soluble C5b-9 could promote microglia activation by up-regulation of costimulatory molecules and increase cytokine secretion. Our results suggested that soluble C5b-9 possessed immunoregulatory potential on microglia.
Insights
Soluble C5b-9 activates microglia, the central nervous system
Area of Science:
- Neuroimmunology
- Complement system biology
Background:
- Microglia are key immune cells in the central nervous system (CNS).
- Soluble C5b-9 is a pro-inflammatory mediator, but its role in microglia is understudied.
Purpose of the Study:
- To investigate the functional role of soluble C5b-9 in microglia activation.
Main Methods:
- Treatment of microglia with assembled functional C5b-9.
- Analysis of microglia activation markers and cytokine secretion.
Main Results:
- Soluble C5b-9 promotes microglia activation.
- Up-regulation of costimulatory molecules observed.
- Increased cytokine secretion by microglia.
Conclusions:
- Soluble C5b-9 exhibits immunoregulatory potential on microglia.
- This finding sheds light on the role of the complement system in neuroinflammation.
