Microglia and neuroinflammation: function, heterogeneity, and crosstalk.

Microglia exhibit diverse activation states and cellular subpopulations, enabling dual neuroprotective or neurotoxic roles in neuroinflammatory conditions.

• Why it matters: Understanding microglial heterogeneity and their interactions is crucial because they are central to CNS immune responses and neuroinflammation, yet their complex functions are not fully understood.
• What they did: The authors review microglial origin, development, and classification, highlighting recent single-cell sequencing findings that reveal multiple activation states and crosstalk with other CNS cells.
• The result: This comprehensive overview advances knowledge of microglial roles in neuroinflammation and suggests that targeting their dynamic networks could lead to precise therapies for neuroinflammatory diseases.