Tyrosine Sulfation of Psgl-1 is Necessary for Leukocyte Rolling
Author Information
Author(s): Westmuckett Andrew D., Thacker Kelly M., Moore Kevin L.
Primary Institution: Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center
Hypothesis
Is tyrosine sulfation required for the P-selectin binding function of mouse Psgl-1?
Conclusion
Tyrosine sulfation is required for optimal function of mouse Psgl-1 in vivo, contributing to atherosclerosis development.
Supporting Evidence
- Tyrosine sulfation enhances the binding capacity of mouse Psgl-1.
- Leukocyte rolling was significantly lower in Tpst DKO mice compared to wild type.
- P-selectin binding to leukocytes was significantly reduced in Tpst DKO mice.
Takeaway
The study found that a special chemical modification called tyrosine sulfation helps white blood cells stick to blood vessels, which is important for fighting diseases like atherosclerosis.
Methodology
The function of Psgl-1 was assessed using leukocyte rolling assays in mice with and without tyrosylprotein sulfotransferase activity.
Limitations
The study primarily focused on a specific mouse model, which may not fully represent human conditions.
Participant Demographics
C57BL6 mice and Tpst DKO mice were used in the study.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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