Target intelligence / Profile preview

White Blood Cell Migration into the Central Nervous System

Molecular classification
Cellular Process, Multi-step Pathway
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Overview

White blood cell migration into the central nervous system is a tightly regulated, multi-step process essential for immune surveillance and response to injury or disease. This process is highly restricted under normal conditions due to specialized barriers but can be dramatically increased during neuroinflammatory or neurodegenerative diseases. Leukocytes enter the CNS via three main routes: the choroid plexus/blood-CSF barrier, the BBB/perivascular space, and the meningeal/subarachnoid pathways. Key steps include adhesion, chemotaxis, and transmigration, involving molecules like ICAM‐1, VCAM‐1, CLMP, CXCL12-CXCR4. While crucial for host defense, excessive or dysregulated migration contributes to the pathogenesis of various neurological disorders.

Other names
Leukocyte Migration into the CNSImmune Cell Trafficking to the BrainCNS Immune Cell Infiltration
02

Biological functions

Immune surveillanceHost defenseInflammatory responseTissue repair
03

Disease associations

Multiple sclerosisAlzheimer's diseaseParkinson's diseaseNeuroinflammationCNS InfectionsTraumatic Brain Injury
04

Safety considerations

Excessive immune cell infiltration can exacerbate tissue damage.Targeting leukocyte migration pathways may compromise immune surveillance.

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