Astrocytes as a Therapeutic Target in Alzheimer's Disease-Comprehensive Review and Recent Developments

Area of Science:

• Neuroscience
• Cell Biology
• Pharmacology

Background:

• Alzheimer's disease (AD) is a prevalent neurodegenerative disorder.
• Astrocytes are implicated in AD pathogenesis, exhibiting both neuroprotective and neurotoxic roles.
• Astrocytes are affected by amyloid-beta (Aβ) pathology, impacting calcium signaling and inflammation.

Purpose of the Study:

• To review novel therapeutic strategies targeting astrocytes for Alzheimer's disease.
• To explore pharmacological and non-pharmacological interventions focused on astrocyte functions.

Main Methods:

• Literature review of current research on astrocyte-targeted AD therapies.
• Analysis of astrocyte roles in neuroinflammation, excitotoxicity, oxidative stress, and lipid metabolism.
• Examination of astrocyte involvement in tau metabolism and Aβ clearance via the glymphatic system.

Main Results:

• Astrocytes modulate neuroinflammation, excitotoxicity, oxidative stress, and lipid metabolism in AD.
• Aβ impacts astrocyte calcium levels, gliotransmission, and inflammatory signaling.
• Astrocytes are crucial for Aβ clearance and tau metabolism, influencing disease progression.

Conclusions:

• Targeting astrocyte-specific pathways presents a promising therapeutic avenue for AD.
• Interventions focusing on anti-inflammatory/antioxidant systems, glutamate activity, and lipid metabolism are key.
• Astrocytic therapies, tailored to AD stage, may prevent or delay disease progression.