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Related Experiment Video

Updated: Jul 14, 2026

Site-Directed Immobilization of Bone Morphogenetic Protein 2 to Solid Surfaces by Click Chemistry

Site-Directed Immobilization of Bone Morphogenetic Protein 2 to Solid Surfaces by Click Chemistry

Published on: March 29, 2018

Enhanced bone regeneration with BMP-2 loaded functional nanoparticle-hydrogel complex.

Yong-Il Chung¹, Kang-Min Ahn, Seung-Ho Jeon

¹Research Center for Biomolecular Nanotechnology and Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju, 500-712, Republic of Korea.

Journal of Controlled Release : Official Journal of the Controlled Release Society

|July 3, 2007

Summary

A novel nanoparticle-hydrogel complex effectively delivered bone morphogenetic protein-2 (BMP-2), significantly enhancing bone regeneration in a rat model. This functional complex shows promise as a superior bone graft material.

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Last Updated: Jul 14, 2026

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Polyelectrolyte Complex for Heparin Binding Domain Osteogenic Growth Factor Delivery

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Published on: May 19, 2023

Area of Science:

Biomaterials Science
Regenerative Medicine
Orthopedic Surgery

Background:

Bone defects pose significant clinical challenges.
Effective delivery of bone morphogenetic protein-2 (BMP-2) is crucial for bone regeneration.
Existing bone graft materials and BMP-2 carriers have limitations.

Purpose of the Study:

To develop and evaluate a functional nanoparticle-hydrogel complex as a sustained release system for BMP-2.
To assess the efficacy of this complex as a bone graft material in vivo.
To compare its performance against conventional materials.

Main Methods:

Development of a heparin-functionalized nanoparticle-fibrin gel complex.
Loading of recombinant BMP-2 into the complex.
In vivo evaluation using a rat calvarial critical size defect model.
Assessment via soft X-ray, histology, alkaline phosphatase (ALP) activity, immunostaining, and mineral content analysis.

Main Results:

The BMP-2 loaded nanoparticle-fibrin gel complex significantly enhanced bone regeneration compared to controls.
Improvements observed in radiodensity, bone-specific ALP activity, osteocalcin immunoreactivity, and mineral content (calcium and phosphate).
Enhanced remodeling, maturation, and mineralization of newly formed bone were achieved.

Conclusions:

The developed nanoparticle-hydrogel complex is a promising candidate for bone defect replacement.
It serves as an effective and enhanced carrier for BMP-2, promoting superior bone formation.
This system offers potential for improved bone graft therapies.