- #1
amanda.ka
- 46
- 0
-Aggrecan is an abundant component of cartilage within the growth plate as well as the articular cartilage of joints
-ADAMTS4 and ADAMTS5 are aggrecanases that cleave aggrecan
-Analysis of the growth plates of mice were performed by immunostaining the growth plates with an antibody against neo-epitope of aggrecan (GI-TEGE) which is generated following cleavage by aggrecanases
The results showed:
a) Wild-type mice: significant staining
b) ADAMTS4 -/- mice: negligible staining
c) ADAMTS5 -/- mice: similar staining to that of wild-type mice
Conclusion: ADAMTS4 is the sole aggrecanase responsible for aggrecan cleavage at this anatomical location
My question is that if GI-TEGE is generated following cleavage shouldn't ADAMTS4 be showing the most staining since it is responsible for cleaving at this site? Why is there the least staining at ADAMTS4 ? Am I missing something?
Thank you in advanced!
*image and data are taken from paper titled: deletion of active ADAMTS5 prevents cartilage degradation in a murine model of osteoarthritis by Glasson et al. 2005
-ADAMTS4 and ADAMTS5 are aggrecanases that cleave aggrecan
-Analysis of the growth plates of mice were performed by immunostaining the growth plates with an antibody against neo-epitope of aggrecan (GI-TEGE) which is generated following cleavage by aggrecanases
The results showed:
a) Wild-type mice: significant staining
b) ADAMTS4 -/- mice: negligible staining
c) ADAMTS5 -/- mice: similar staining to that of wild-type mice
Conclusion: ADAMTS4 is the sole aggrecanase responsible for aggrecan cleavage at this anatomical location
My question is that if GI-TEGE is generated following cleavage shouldn't ADAMTS4 be showing the most staining since it is responsible for cleaving at this site? Why is there the least staining at ADAMTS4 ? Am I missing something?
Thank you in advanced!
*image and data are taken from paper titled: deletion of active ADAMTS5 prevents cartilage degradation in a murine model of osteoarthritis by Glasson et al. 2005