What question did this study set out to answer?

To develop a 3D nanofibrous scaffold presenting synthetic collagen-mimetic helical peptides that activate DDR2 and β1 integrin receptors to synergistically enhance critical-sized bone defect repair.

September 20, 2024Bioactive MaterialsOpen Access

Synthetic helical peptides on nanofibers to activate cell-surface receptors and synergistically enhance critical-sized bone defect regeneration

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Authors

TZTongqing Zhou RCRafael Correia Cavalcante CGChunxi Ge

Discussion

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Overview

Preclinical study demonstrates a 7.8-fold increase in mineralized bone repair in a critical-sized defect model, indicating the synergistic power of dual-receptor-activating biomimetic scaffolds.

Key Points

To develop a 3D nanofibrous scaffold presenting synthetic collagen-mimetic helical peptides that activate DDR2 and β1 integrin receptors to synergistically enhance critical-sized bone defect repair.
Synthesized a poly(l-lactic acid) (PLLA)-based graft-copolymer to enable covalent attachment of collagen-mimic peptides via click reaction.
Fabricated 3D interconnected pore scaffolds containing peptide-functionalized nanofibers targeting discoidin domain receptor 2 (DDR2) and β1 integrins.
Evaluated bone regeneration in vivo using a critical-sized bone defect animal model over an 8-week implantation period.
Peptide-decorated nanofibrous scaffolds achieved 7.8 times more mineralized bone regeneration compared with peptide-free control scaffolds after 8 weeks of implantation.
Co-activation of DDR2 and β1 integrins demonstrated a synergistic effect that enhanced osteogenic differentiation of progenitor cells and promoted vascularized bone formation.

Cite This Study

Zhou et al. (2024) studied this question.

synapsesocial.com/papers/6a86c517cbde9db34bcb8c50 https://doi.org/10.1016/j.bioactmat.2024.08.017

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September 20, 2024Bioactive MaterialsOpen Access

Synthetic helical peptides on nanofibers to activate cell-surface receptors and synergistically enhance critical-sized bone defect regeneration

View Full Paper

Ask AI

Bookmark

Authors

TZTongqing Zhou RCRafael Correia Cavalcante CGChunxi Ge

Discussion

Member takes

Overview

Preclinical study demonstrates a 7.8-fold increase in mineralized bone repair in a critical-sized defect model, indicating the synergistic power of dual-receptor-activating biomimetic scaffolds.

Key Points

To develop a 3D nanofibrous scaffold presenting synthetic collagen-mimetic helical peptides that activate DDR2 and β1 integrin receptors to synergistically enhance critical-sized bone defect repair.
Synthesized a poly(l-lactic acid) (PLLA)-based graft-copolymer to enable covalent attachment of collagen-mimic peptides via click reaction.
Fabricated 3D interconnected pore scaffolds containing peptide-functionalized nanofibers targeting discoidin domain receptor 2 (DDR2) and β1 integrins.
Evaluated bone regeneration in vivo using a critical-sized bone defect animal model over an 8-week implantation period.
Peptide-decorated nanofibrous scaffolds achieved 7.8 times more mineralized bone regeneration compared with peptide-free control scaffolds after 8 weeks of implantation.
Co-activation of DDR2 and β1 integrins demonstrated a synergistic effect that enhanced osteogenic differentiation of progenitor cells and promoted vascularized bone formation.

Cite This Study

Zhou et al. (2024) studied this question.

synapsesocial.com/papers/6a86c517cbde9db34bcb8c50 https://doi.org/10.1016/j.bioactmat.2024.08.017

View Full Paper

Ask AI

Bookmark