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Updated: Jan 31, 2026
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Site-Directed Immobilization of Bone Morphogenetic Protein 2 to Solid Surfaces by Click Chemistry
Published on: March 29, 2018
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Cellular Response of Anodized Titanium Surface by Poly(Lactide-co-Glycolide)/Bone Morphogenic Protein-2
Su-Young Lee1, Jai-Young Koak2, Seong-Kyun Kim2
11Department of Prosthodontics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591 Republic of Korea.
Tissue Engineering and Regenerative Medicine
|January 4, 2019
Summary
Poly(d,l-lactide-co-glycolide) (PLG) polymers combined with recombinant human bone morphogenic protein-2 (rhBMP-2) significantly enhanced cell proliferation and differentiation on anodized titanium. This biomaterial shows promise for bone regeneration applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Orthopedic Research
Background:
- Anodized titanium is a common implant material.
- Enhancing titanium's osteoconductivity is crucial for bone regeneration.
- Poly(d,l-lactide-co-glycolide) (PLG) and recombinant human bone morphogenic protein-2 (rhBMP-2) are potential osteogenic agents.
Purpose of the Study:
- To investigate the biological properties of anodized titanium treated with PLG and rhBMP-2.
- To evaluate cell proliferation, differentiation, and gene expression on modified titanium surfaces.
Main Methods:
- Titanium specimens were anodized and coated with PLG or PLG/rhBMP-2 via drop-drying or electrospray.
- Human osteoblastic-like sarcoma cells were cultured on the treated titanium.
- Cell proliferation, alkaline phosphatase (ALP) activity, Runx-2 gene expression, and osteogenic protein formation were assessed.
Main Results:
- rhBMP-2 loaded titanium discs showed significantly higher cell proliferation after 3 days compared to unloaded discs.
- ALPase activity was significantly elevated on rhBMP-2 loaded titanium discs.
- The PLG/rhBMP-2-coated surface exhibited the highest expression level of Runx2 mRNA.
Conclusions:
- PLG polymers mixed with rhBMP-2 enhance cell proliferation and differentiation on anodized titanium.
- This combination shows potential for improving osteogenic protein formation.
- The findings suggest a promising biomaterial strategy for bone regeneration.
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