Related Experiment Videos
Structure and function of P-selectin glycoprotein ligand-1
1Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma Medical Research Foundation, Oklahoma City 73104, USA. kevin-moore@ouhsc.edu
Leukemia & Lymphoma
|June 25, 1998
Summary
P-selectin glycoprotein ligand-1 (PSGL-1) is a key molecule mediating leukocyte adhesion and migration. This review details PSGL-1
Area of Science:
- Immunology and Cell Biology
- Molecular and Cellular Medicine
Background:
- Leukocyte trafficking to inflammatory and lymphatic sites is crucial for immune responses.
- Adhesion molecules, particularly selectins, mediate leukocyte tethering and rolling on the vascular wall.
- Selectin-glycogen interactions initiate firm adhesion and subsequent transendothelial migration.
Purpose of the Study:
- To review the structure and function of P-selectin glycoprotein ligand-1 (PSGL-1).
- To elucidate PSGL-1's role in mediating leukocyte adhesion and cell-cell interactions.
Main Methods:
- Literature review focusing on PSGL-1 structure, function, and interactions.
- Analysis of studies demonstrating PSGL-1's role in vitro and in vivo adhesion.
Main Results:
- PSGL-1 is a disulfide-bonded homodimeric mucin-like glycoprotein expressed on leukocytes.
- PSGL-1 binds to P-selectin (on endothelium/platelets) and L-selectin (on leukocytes).
- PSGL-1 mediates leukocyte-endothelial, leukocyte-platelet, and leukocyte-leukocyte adhesion.
Conclusions:
- PSGL-1 is a critical mediator of leukocyte adhesion and migration.
- PSGL-1 is the sole selectin glycoprotein ligand proven to mediate cell-cell adhesion in vitro and in vivo.
- Understanding PSGL-1 function is vital for targeting inflammatory and immune cell trafficking.