Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/129302
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Type: Journal article
Title: Modulation of metal-azolate frameworks for the tunable release of encapsulated glycosaminoglycans
Author: Velásquez-Hernández, M.D.J.
Astria, E.
Winkler, S.
Liang, W.
Wiltsche, H.
Poddar, A.
Shukla, R.
Prestwich, G.
Paderi, J.
Salcedo-Abraira, P.
Amenitsch, H.
Horcajada, P.
Doonan, C.J.
Falcaro, P.
Citation: Chemical Science, 2020; 11(39):10835-10843
Publisher: Royal Society of Chemistry
Issue Date: 2020
ISSN: 2041-6520
2041-6539
Statement of
Responsibility: 
Miriam de J. Velásquez-Hernández, Efwita Astria, Sarah Winkler, Weibin Liang, Helmar Wiltsche, Arpita Poddar, Ravi Shukla, Glenn Prestwich, John Paderi, Pablo Salcedo-Abraira, Heinz Amenitsch, Patricia Horcajada, Christian J. Doonan and Paolo Falcaro
Abstract: Glycosaminoglycans (GAGs) are biomacromolecules necessary for the regulation of different biological functions. In medicine, GAGs are important commercial therapeutics widely used for the treatment of thrombosis, inflammation, osteoarthritis and wound healing. However, protocols for the encapsulation of GAGs in MOFs carriers are not yet available. Here, we successfully encapsulated GAG-based clinical drugs (heparin, hyaluronic acid, chondroitin sulfate, dermatan sulfate) and two new biotherapeutics in preclinical stage (GM-1111 and HepSYL proteoglycan) in three different pH-responsive metal-azolate frameworks (ZIF-8, ZIF-90, and MAF-7). The resultant GAG@MOF biocomposites present significant differences in terms of crystallinity, particle size, and spatial distribution of the cargo, which influences the drug-release kinetics upon applying an acidic stimulus. For a selected system, heparin@MOF, the released therapeutic retained its antithrombotic activity while the MOF shell effectively protects the drug from heparin lyase. By using different MOF shells, the present approach enables the preparation of GAG-based biocomposites with tunable properties such as encapsulation efficiency, protection and release.
Rights: This journal is © The Royal Society of Chemistry 2020
RMID: 1000028876
DOI: 10.1039/d0sc01204a
Grant ID: http://purl.org/au-research/grants/arc/DP170103531
Appears in Collections:Chemistry publications

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