Growth?Factor Free Multicomponent Nanocomposite Hydrogels That Stimulate Bone Formation

Okesola, Babatunde O.; Ni, Shilei; Derkus, Burak; Galeano, Carles C.; Hasan, Abshar; Wu, Yuanhao; Ramis, Jopeth; Buttery, Lee; Dawson, Jonathan; D�Este, Matteo; OC Oreffo, Richard; Eglin, David; Sun, Hongchen; Mata, Alvaro

Abstract

Synthetic osteo?promoting materials that are able to stimulate and accelerate bone formation without the addition of exogenous cells or growth factors represent a major opportunity for an aging world population. A co?assembling system that integrates hyaluronic acid tyramine (HA?Tyr), bioactive peptide amphiphiles (GHK?Cu2+), and Laponite (Lap) to engineer hydrogels with physical, mechanical, and biomolecular signals that can be tuned to enhance bone regeneration is reported. The central design element of the multicomponent hydrogels is the integration of self?assembly and enzyme?mediated oxidative coupling to optimize structure and mechanical properties in combination with the incorporation of an osteo? and angio?promoting segments to facilitate signaling. Spectroscopic techniques are used to confirm the interplay of orthogonal covalent and supramolecular interactions in multicomponent hydrogel formation. Furthermore, physico?mechanical characterizations reveal that the multicomponent hydrogels exhibit improved compressive strength, stress relaxation profile, low swelling ratio, and retarded enzymatic degradation compared to the single component hydrogels. Applicability is validated in vitro using human mesenchymal stem cells and human umbilical vein endothelial cells, and in vivo using a rabbit maxillary sinus floor reconstruction model. Animals treated with the HA?Tyr?HA?Tyr?GHK?Cu2+ hydrogels exhibit significantly enhanced bone formation relative to controls including the commercially available Bio?Oss.

Citation

Okesola, B. O., Ni, S., Derkus, B., Galeano, C. C., Hasan, A., Wu, Y., …Mata, A. (2020). Growth‐Factor Free Multicomponent Nanocomposite Hydrogels That Stimulate Bone Formation. Advanced Functional Materials, 30(14), Article 1906205. https://doi.org/10.1002/adfm.201906205

• Journal Article Type: Article
• Acceptance Date: Jan 8, 2020
• Online Publication Date: Feb 16, 2020
• Publication Date: Apr 3, 2020
• Deposit Date: Jan 28, 2020
• Publicly Available Date: Feb 17, 2021
• Journal: Advanced Functional Materials
• Print ISSN: 1616-301X
• Electronic ISSN: 1616-3028
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 30
• Issue: 14
• Article Number: 1906205
• DOI: https://doi.org/10.1002/adfm.201906205
• Keywords: Electrochemistry; Electronic, Optical and Magnetic Materials; General Chemical Engineering; Condensed Matter Physics; Biomaterials
• Public URL: https://nottingham-repository.worktribe.com/output/3820636
• Publisher URL: https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201906205
• Additional Information: Received: 2019-07-30; Published: 2020-02-16