Neuroinflammation and immunometabolism in neurodegenerative diseases

Immunometabolism is an emerging field of research investigating the ability of immune cells to modulate their metabolic activity for optimal function. While this has been extensively examined in peripheral immune cells like macrophages, only recently have these studies been extended to assess the immunometabolic activity of microglia, the innate immune cells of the brain. Microglia are highly metabolically flexible and can utilize different nutrients for their diverse functions. Like other immune cells, they undergo metabolic reprogramming on immune stimulation and in inflammatory, neurodegenerative conditions such as Alzheimer's disease (AD). In recent years, researchers have looked at the intricate mechanisms that modulate microglial activity and have uncovered key links between altered metabolism, neuroinflammation, and the involvement of disease-associated risk genes. This review highlights the recent studies that have significantly contributed to our understanding of the metabolic dysregulation observed in activated microglia in conditions such as AD, unveiling novel targets for therapeutic intervention.