TLR2 and Angiogenesis in Rheumatoid Arthritis
Author Information
Author(s): Saber Tajvur, Douglas J. Balogh, Emese McCormick, Jennifer NicAnUltaigh, Sinead Connolly, Mary Fearon, Ursula
Primary Institution: University College Dublin
Hypothesis
This study investigates the effect of TLR2 on angiogenesis, endothelial cell adhesion, and invasion in rheumatoid arthritis.
Conclusion
TLR2 activation promotes angiogenesis, cell adhesion, and invasion, effects that are mediated through the Tie2 signaling pathway.
Supporting Evidence
- Pam3CSK4 significantly increased angiogenic tube formation.
- TLR2 activation induced an 8.8±2.8 fold increase in cell invasion compared to control.
- Neutralisation of the Ang2 receptor, Tie2, significantly inhibited Pam3CSK4-induced EC tube formation and invasion.
Takeaway
The study shows that a specific receptor in the body, TLR2, helps blood vessels grow and allows cells to move in rheumatoid arthritis, which is a painful joint disease.
Methodology
The study used microvascular endothelial cells and rheumatoid arthritis synovial explants to assess the effects of TLR2 activation on angiogenesis and cell behavior.
Participant Demographics
RA patients with clinically active inflamed knees prior to biologic therapy.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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