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Differentiating Co-Delivery of Bisphosphonate and Simvastatin by Self-Healing Hyaluronan Hydrogel Formed by Orthogonal "Clicks": An In-Vitro Assessment
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0001-9035-7078
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0002-9200-8004
2021 (English)In: Polymers, E-ISSN 2073-4360, Vol. 13, no 13, p. 2106-, article id 2106Article in journal (Refereed) Published
Abstract [en]

Due to its unique properties resembling living tissues, hydrogels are attractive carriers for the localized and targeted delivery of various drugs. Drug release kinetics from hydrogels are commonly controlled by network properties and the drug-network interactions. However, and simultaneously, the programmable delivery of multiple drugs with opposing properties (hydrophilicity, molecular weight, etc.) from hydrogels with determined network properties is still challenging. Herein, we describe the preparation of injectable self-healing hyaluronic acid (HA) hydrogels that release hydrophobic simvastatin and hydrophilic aminobisphosphonate (BP) drugs independently in response to acidic and thiol-containing microenvironments, respectively. We apply a prodrug strategy to BP by conjugating it to HA via a self-immolative disulfide linker that is stable in the blood plasma and is cleavable in the cytoplasm. Moreover, we utilize HA-linked BP ligands to reversibly bind Ca2+ ions and form coordination hydrogels. Hydrazone coupling of hydrophobic ligands to HA permits the encapsulation of simvastatin molecules in the resulting amphiphilic HA derivative and the subsequent acid-triggered release of the drug. The conjugation of BP and hydrophobic ligands to HA enables preparation of both bulk self-healing hydrogels and nanogels. Moreover, the developed hydrogel system is shown to be multi-responsive by applying orthogonally cleavable linkers. The presented hydrogel is a potential candidate for the combination treatment of osteoporosis and bone cancers as well as for bone tissue regeneration since it can deliver bone anabolic and anti-catabolic agents in response to bone diseases microenvironments.

Place, publisher, year, edition, pages
MDPI AG , 2021. Vol. 13, no 13, p. 2106-, article id 2106
Keywords [en]
hyaluronan, bisphosphonate, prodrug, simvastatin, hydrogel, orthogonal reactions
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-299051DOI: 10.3390/polym13132106ISI: 000671285200001PubMedID: 34206872Scopus ID: 2-s2.0-85109306102OAI: oai:DiVA.org:kth-299051DiVA, id: diva2:1582361
Note

QC 20220302

Available from: 2021-07-30 Created: 2021-07-30 Last updated: 2024-01-17Bibliographically approved

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Lüchow, MadsMalkoch, Michael

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