Beyond aggregation: Pathological phase transitions in neurodegenerative disease

Area of Science:

• Cell Biology
• Neuroscience
• Biochemistry

Background:

• Cellular organization relies on phase transitions, a process fundamental to cell function.
• Aberrations in these phase transitions are increasingly recognized as early events in neurodegenerative disease pathogenesis.

Purpose of the Study:

• To review evidence linking phase transition defects to neurodegeneration.
• To elucidate the mechanisms underlying pathological phase transitions and their consequences.

Main Methods:

• Review of existing literature on phase transitions in cellular organization and neurodegeneration.
• Analysis of defects at protein and condensate levels.
• Discussion of key concepts like dynamical arrest and heterotypic buffering.

Main Results:

• Defects in protein and multicomponent condensate phase transitions are implicated in neurodegeneration.
• Dynamical arrest and heterotypic buffering explain cellular dysfunction and protein deposit formation.
• Pathological phase transitions contribute to pleiotropic cellular defects.

Conclusions:

• Understanding aberrant phase transitions is key to neurodegenerative disease etiology.
• These insights can guide the development of novel therapeutic strategies.
• Restoring cellular homeostasis through targeted interventions is a promising therapeutic avenue.