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Updated: May 14, 2026

Laminar Flow-based Assays to Investigate Leukocyte Recruitment on Cultured Vascular Cells and Adherent Platelets
Published on: April 9, 2018
Getting leukocytes to the site of inflammation
1Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. wamuller@northwestern.edu
Leukocyte transendothelial migration, or diapedesis, is crucial for immune responses. This review details the molecular mechanisms governing both paracellular and transcellular pathways, highlighting shared regulatory molecules.
Area of Science:
- Immunology
- Cell Biology
Background:
- Immune cell trafficking across blood vessels is essential for innate and adaptive immunity.
- Leukocyte diapedesis involves movement through or between endothelial cells.
Purpose of the Study:
- To review the molecular mechanisms of leukocyte transendothelial migration.
- To focus on the molecules and pathways regulating both paracellular and transcellular migration.
Main Methods:
- Literature review of studies on leukocyte diapedesis.
- Analysis of molecular regulators of endothelial transmigration.
Main Results:
- Diapedesis is critical for initiating immune responses.
- Both paracellular and transcellular migration share common molecular regulators.
- The lateral border recycling compartment plays a significant role in transmigration.
Conclusions:
- A unified hypothesis for leukocyte transmigration mechanisms is proposed.
- Understanding these pathways is key to modulating immune cell trafficking.
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