Pericytes Across the Lifetime in the Central Nervous System

Area of Science:

• Neuroscience
• Cell Biology
• Vascular Biology

Background:

• Pericytes are crucial perivascular cells integral to brain microvasculature.
• They play key roles in blood-brain barrier (BBB) development and maintenance.
• Pericyte dysfunction is linked to neurovascular pathologies in diseases like Alzheimer's and stroke.

Purpose of the Study:

• To review current knowledge on pericyte regional heterogeneity and developmental changes in the brain.
• To synthesize information on pericyte differentiation, migration, and population dynamics.
• To identify research gaps concerning pericyte distribution and function throughout the brain.

Main Methods:

• Literature review synthesizing existing research on brain pericytes.
• Focus on developmental trajectory, adult regional differences, and aging-related changes.
• Analysis of studies primarily from the cerebral cortex and hippocampus.

Main Results:

• Pericytes exhibit regional heterogeneity and dynamic changes across major life stages.
• Development involves differentiation and migration, with distinct adult distributions.
• Aging impacts pericyte populations, relevant to neurodegenerative diseases.

Conclusions:

• Understanding pericyte heterogeneity and life-stage changes is critical for brain health.
• Current knowledge is largely confined to specific brain regions like the cortex and hippocampus.
• Further research is needed to map pericyte distribution and function across the entire brain.