Growth-Factor Free Multicomponent Nanocomposite Hydrogels That Stimulate Bone Formation

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Okesola B. O., Ni S., DERKUŞ B., Galeano C. C., Hasan A., Wu Y., ...Daha Fazla

ADVANCED FUNCTIONAL MATERIALS, cilt.30, sa.14, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 14
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1002/adfm.201906205
  • Dergi Adı: ADVANCED FUNCTIONAL MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: bone formation, cranio-maxillofacial surgery, multicomponent self-assembly, nanocomposite hydrogels, nanosilicates, self- assembling peptides, EMBRYONIC STEM-CELLS, MECHANICAL-PROPERTIES, DENTAL IMPLANTS, IN-VITRO, REGENERATION, AUGMENTATION, COMPOSITE, DELIVERY, DESIGN, MINERALIZATION
  • Ankara Üniversitesi Adresli: Evet

Özet

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.