Core Circadian Protein BMAL1: Implication for Nervous System Functioning and Its Diseases

Area of Science:

• Neuroscience
• Chronobiology
• Molecular Biology

Background:

• The brain and muscle ARNT-like 1 protein (BMAL1) is a crucial regulator of circadian rhythms, influencing numerous physiological processes.
• Disruptions in BMAL1 function are linked to various pathological conditions, including nervous system disorders.
• BMAL1's evolutionary conservativity enables the use of experimental models to study its role in disease.

Purpose of the Study:

• To review the multifaceted roles of BMAL1 in the nervous system beyond circadian regulation.
• To explore BMAL1's involvement in neuroinflammation, neurodegeneration, neurodevelopment, mood disorders, addiction, cognition, and neurosignaling.
• To summarize BMAL1's biochemical regulation and potential pharmacological interventions.

Main Methods:

• Comprehensive review of human and animal studies.
• Analysis of data on BMAL1's function in neurons, glial cells, and microglial cells.
• Investigation of BMAL1's impact on various neurological processes and disorders.

Main Results:

• BMAL1 plays significant roles in neuroinflammation, trauma, neurodegeneration, neurodevelopment, myelinization, mood disorders, addiction, cognitive functions, and neurosignaling.
• BMAL1's functions extend beyond circadian rhythm regulation in diverse neural cell types.
• Both deficiency and overexpression of BMAL1 can have detrimental or protective effects under pathological conditions.

Conclusions:

• BMAL1's influence on the nervous system is extensive and complex, extending far beyond its role in circadian rhythms.
• Therapeutic modulation of BMAL1 activity presents a promising avenue for treating a spectrum of nervous system disorders.
• Understanding BMAL1's dual protective and destructive roles is key to developing effective neurological treatments.