CD157 and Brain Immune System in (Patho)physiological Conditions: Focus on Brain Plasticity

Area of Science:

• Neuroscience
• Immunology
• Cell Biology

Background:

• BST-1/CD157 is an ectoenzyme and receptor crucial for cellular functions in various tissues.
• CD157 catalyzes NAD+ hydrolysis and interacts with integrin adhesion receptors.
• Its roles extend to neuronal and glial cell regulation, including emotions, motor functions, and social behavior.

Purpose of the Study:

• To review the multifaceted roles of BST-1/CD157 in the central nervous system.
• To elucidate CD157's involvement in neuroinflammation, brain development, and plasticity.
• To summarize CD157's function at the intersection of neurogenesis, angiogenesis, and immune regulation.

Main Methods:

• Literature review of studies on BST-1/CD157 function in the brain.
• Analysis of CD157's interactions with cellular components and extracellular matrix proteins.
• Examination of CD157 expression patterns during brain development and in adult neural stem cells.

Main Results:

• CD157 is implicated in innate immune responses in the CNS, driving reactive gliosis and neuroinflammation.
• It influences cell adhesion and migration through interactions with extracellular matrix proteins, impacting blood-brain barrier integrity.
• High expression in embryonic brains and presence on adult neural stem cells suggest a role in neurogenesis and brain development.

Conclusions:

• BST-1/CD157 is a critical regulator of brain plasticity, influencing neurogenesis, angiogenesis, and immune responses.
• Its functions in the CNS are diverse, ranging from immune modulation to developmental processes.
• Further research into CD157's mechanisms could reveal therapeutic targets for neurological disorders.