Abstract：
:Decellularized native extracellular matrix (ECM) biomaterials are widely used in tissue engineering and have reached clinical application as biomesh implants. To enhance their regenerative properties and postimplantation performance, ECM biomaterials could be functionalized via immobilization of bioactive molecules. To facilitate ECM functionalization, we developed a metabolic glycan labeling approach using physiologic pathways to covalently incorporate click-reactive azide ligands into the native ECM of a wide variety of rodent tissues and organs in vivo, and into the ECM of isolated rodent and porcine lungs cultured ex vivo. The incorporated azides within the ECM were preserved after decellularization and served as chemoselective ligands for subsequent bioconjugation via click chemistry. As proof of principle, we generated alkyne-modified heparin, immobilized it onto azide-incorporated acellular lungs, and demonstrated its bioactivity by Antithrombin III immobilization and Factor Xa inhibition. The herein reported metabolic glycan labeling approach represents a novel platform technology for manufacturing click-reactive native ECM biomaterials, thereby enabling efficient and chemoselective functionalization of these materials to facilitate tissue regeneration and repair.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Ren X,Evangelista-Leite D,Wu T,Rajab TK,Moser PT,Kitano K,Economopoulos KP,Gorman DE,Bloom JP,Tan JJ,Gilpin SE,Zhou H,Mathisen DJ,Ott HCdoi
10.1016/j.biomaterials.2018.08.012subject
Has Abstractpub_date
2018-11-01 00:00:00pages
127-134eissn
0142-9612issn
1878-5905pii
S0142-9612(18)30566-0journal_volume
182pub_type
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