Bio-responsive polymer hydrogels homeostatically regulate blood coagulation

Manfred F. Maitz, Uwe Freudenberg, Mikhail V. Tsurkan, Marion Fischer, Theresa Beyrich and Carsten Werner ()
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Manfred F. Maitz: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden
Uwe Freudenberg: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden
Mikhail V. Tsurkan: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden
Marion Fischer: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden
Theresa Beyrich: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden
Carsten Werner: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden

Nature Communications, 2013, vol. 4, issue 1, 1-7

Abstract: Abstract Bio-responsive polymer architectures can empower medical therapies by engaging molecular feedback-response mechanisms resembling the homeostatic adaptation of living tissues to varying environmental constraints. Here we show that a blood coagulation-responsive hydrogel system can deliver heparin in amounts triggered by the environmental levels of thrombin, the key enzyme of the coagulation cascade, which—in turn—becomes inactivated due to released heparin. The bio-responsive hydrogel quantitatively quenches blood coagulation over several hours in the presence of pro-coagulant stimuli and during repeated incubation with fresh, non-anticoagulated blood. These features enable the introduced material to provide sustainable, autoregulated anticoagulation, addressing a key challenge of many medical therapies. Beyond that, the explored concept may facilitate the development of materials that allow the effective and controlled application of drugs and biomolecules.

Date: 2013
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DOI: 10.1038/ncomms3168

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