Proteostasis in neurodegenerative diseases.

Area of Science:

• Cellular Biology
• Neuroscience
• Biochemistry

Background:

• Proteostasis, the maintenance of protein homeostasis, is critical for cellular function and survival.
• Protein misfolding and aggregation under stress can lead to proteotoxicity and disease.
• Neurodegenerative diseases like Alzheimer's, Parkinson's, and Huntington's are linked to accumulating misfolded proteins.

Purpose of the Study:

• To describe the components and mechanisms of key proteostasis branches: chaperones, the ubiquitin-proteasome system (UPS), and autophagy.
• To explore the role of these branches in preventing and mitigating neurodegeneration.
• To discuss the therapeutic potential of targeting proteostasis network proteins.

Main Methods:

• Review and synthesis of existing literature on proteostasis pathways.
• Description of the mechanistic basis of chaperone, UPS, and autophagy functions.
• Analysis of the involvement of these pathways in neurodegenerative conditions.

Main Results:

• Chaperones maintain protein conformation and guide misfolded proteins for degradation.
• The UPS and autophagy are the primary cellular machinery for protein degradation.
• Dysfunction in these pathways contributes to the pathomechanisms of neurodegeneration.

Conclusions:

• Proteostasis network components (chaperones, UPS, autophagy) are essential for cellular health.
• Targeting these pathways offers therapeutic promise for neurodegenerative diseases.
• Modulating proteostasis proteins via small molecules or novel approaches may combat neurodegeneration.