Old dog, new tricks: Astrocytes use the CD40 pathway to propagate neuroinflammation.

Astrocytes activate the CD40 pathway to propagate neuroinflammation, revealing a new role beyond traditional immune cells in the brain.

• Why it matters: Understanding how neuroinflammation spreads is crucial for developing treatments for neurodegenerative diseases, yet the role of astrocytes in this process remains underexplored.
• What they did: The study investigates the activation of the CD40 pathway in astrocytes, demonstrating that these glial cells can function as antigen-presenting cells during neuroinflammatory responses.
• The result: Findings suggest that targeting the CD40 pathway in astrocytes could offer new therapeutic strategies to modulate neuroinflammation and potentially slow disease progression.