Immobilization of actively thromboresistant assemblies on sterile blood-contacting surfaces.

Qu, Zheng; Krishnamurthy, Venkat; Haller, Carolyn A; Dorr, Brent M; Marzec, Ulla M; Hurst, Sawan; Hinds, Monica T; Hanson, Stephen R et al. · Adv Healthc Mater · 2014

basic_science · Level V

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Abstract

Rapid one-step modification of thrombomodulin with alkylamine derivatives such as azide, biotin, and PEG is achieved using an evolved sortase (eSrtA) mutant. The feasibility of a point-of-care scheme is demonstrated herein to site-specifically immobilize azido-thrombomodulin on sterilized commercial ePTFE vascular grafts, which exhibit superior thromboresistance compared with commercial heparin-coated grafts in a primate model of acute graft thrombosis.

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