Apr 21, 2020

Cadherin-6 mediates thrombosis in vivo

BioRxiv : the Preprint Server for Biology
E. G. BouckMarvin T Nieman


Background: Platelet adhesion is the critical process mediating stable thrombus formation. Previous reports of cadherin-6 on human platelets have demonstrated its role in platelet aggregation and thrombus formation. Objectives: We aimed to further characterize the importance of cadherin-6 in thrombosis in vivo. Methods: Cadherin-6 platelet expression was evaluated by western blotting, flow cytometry and immunoprecipitation. Thrombosis was evaluated using the FeCl3 and Rose Bengal carotid artery models in C57Bl6 mice treated with anti-cadherin-6 or IgG and wild-type or Cdh6-/- mice. Platelet function was compared in wild type and Cdh6-/- mice using tail-clip assays and aggregometry. Results: Human platelet expression of cadherin-6 was confirmed at ~3,000 copies per platelet. Cdh6-/- mice or those treated with anti-Cadherin-6 antibody showed an increased time to occlusion in both thrombosis models. Cadherin-6 was not expressed on mouse platelets, and there were no differences in tail bleeding times or platelet aggregation in wild-type versus Cdh6-/- mice. Conclusions: Cadherin-6 plays an essential role in thrombosis in vivo. However, cadherin-6 is not expressed on murine platelets. These data are in contrast to human platelets, w...Continue Reading

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