Metabolic Reprogramming of Astrocytes in Pathological Conditions: Implications for Neurodegenerative Diseases

Area of Science:

• Neuroscience
• Cellular Metabolism
• Astrocyte Biology

Background:

• Astrocytes are key glial cells supporting neuronal function and brain energy homeostasis.
• They regulate synaptic activity, neurotransmitter recycling, and maintain the blood-brain barrier.
• Astrocyte metabolism, including glycolysis and lipid metabolism, is central to their supportive roles.

Purpose of the Study:

• To review the metabolic roles of astrocytes in physiological and pathological conditions.
• To highlight astrocyte adaptive plasticity and metabolic reprogramming in central nervous system diseases.
• To emphasize the need for advanced tools to study astrocyte heterogeneity and metabolic changes.

Main Methods:

• This is a review article, synthesizing existing research.
• It analyzes metabolic pathways like glycolysis and fatty acid oxidation in astrocytes.
• The review discusses astrocyte responses in various neuropathologies.

Main Results:

• Astrocytes maintain brain energy homeostasis through glycolysis and lipid metabolism under normal conditions.
• In response to CNS pathologies (neurotrauma, stroke, neurodegeneration), astrocytes exhibit significant metabolic alterations.
• Reactive astrocytes upregulate glycolysis and fatty acid oxidation, with dual roles in acute vs. chronic disease settings.

Conclusions:

• Astrocyte metabolic reprogramming is a critical factor in central nervous system health and disease.
• Understanding astrocyte metabolic plasticity is essential for developing therapeutic strategies.
• Further research using advanced tools is needed to unravel astrocyte heterogeneity and disease-specific metabolic adaptations.