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Updated: Nov 10, 2025

Analysis of Physiologic E-Selectin-Mediated Leukocyte Rolling on Microvascular Endothelium
Published on: February 11, 2009
E-selectin negatively regulates polymorphonuclear neutrophil transmigration through altered endothelial junction
Dandan Huang1,2, Qihan Ding1,2, Shenbao Chen1,2
1Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory) and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China.
E-selectins negatively regulate neutrophil transmigration by impacting endothelial cell plasticity and junctional integrity. This finding clarifies mechanisms of leukocyte TEM and informs inflammatory response research.
Area of Science:
- Immunology
- Cell Biology
- Vascular Biology
Background:
- Transendothelial migration (TEM) of neutrophils is crucial for inflammation.
- The role of endothelial plasticity in neutrophil TEM is not fully understood.
Purpose of the Study:
- To investigate the dynamics of human polymorphonuclear neutrophil (PMN) TEM across endothelial cells.
- To elucidate the role of E-selectins in regulating endothelial plasticity during TEM.
Main Methods:
- Utilized an in vitro model with lipopolysaccharide-treated human umbilical vein endothelial cell (HUVEC) monolayers.
- Employed shRNA-E-selectin knockdown to assess its impact on endothelial junctions and PMN transmigration.
- Analyzed actin remodeling, cortactin, Arp2/3 activation, and VE-cadherin function.
Main Results:
- E-selectin knockdown destabilized endothelial junctional integrity.
- Reduced actin branching and increased stress fibers at cell-cell junctions were observed.
- Downregulation of cortactin and Arp2/3 altered VE-cadherin function, enhancing PMN transmigration.
- P-selectins showed overlapping functions with E-selectins in neutrophil adhesion and transmigration.
Conclusions:
- E-selectins negatively regulate neutrophil transmigration by modulating endothelial plasticity.
- This study provides novel insights into actin remodeling and junctional integrity in endothelial cells during leukocyte TEM.
- Findings enhance understanding of inflammatory cascade mechanisms.
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Published on: August 23, 2013
11:26Real-time Imaging of Endothelial Cell-cell Junctions During Neutrophil Transmigration Under Physiological Flow
Published on: August 14, 2014
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