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Related Experiment Video

Updated: Mar 24, 2026

Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants

Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants

Published on: August 5, 2021

Regulating the osteogenic function of rhBMP 2 by different titanium surface properties.

Ming Xiao^1,2, Meina Biao^1,2, Yangmei Chen^1,2

¹Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China.

Journal of Biomedical Materials Research. Part A

|March 19, 2016

Summary

Surface modifications of titanium implants impact bone morphogenetic protein 2 (BMP-2) structure and function. Anodic oxidation preserves BMP-2 conformation and osteogenic activity longer than acid-alkali treatment.

Keywords:

bone morphogenetic protein 2 conformational change osteogenic function surface modification titanium

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Last Updated: Mar 24, 2026

Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants

Platelet-Derived Extracellular Vesicle Functionalization of Ti Implants

Published on: August 5, 2021

Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

Covalent Binding of BMP-2 on Surfaces Using a Self-assembled Monolayer Approach

Covalent Binding of BMP-2 on Surfaces Using a Self-assembled Monolayer Approach

Published on: August 26, 2013

Area of Science:

Biomaterials Science
Tissue Engineering
Orthopedic Research

Background:

Bone morphogenetic protein 2 (BMP-2) is crucial for osteogenic differentiation and bone healing.
BMP-2 adsorbed on biomedical implants acts as a mediator between implant surfaces and host cells.
Understanding BMP-2-surface interactions is key to explaining implant osteogenic properties.

Purpose of the Study:

To investigate the conformational and functional changes of BMP-2 induced by different surface modifications on titanium metals.
To determine how surface properties influence BMP-2 adsorption, structure, and sustained osteogenic function.

Main Methods:

Surface modification of titanium using anodic oxidation and acid-alkali treatments.
Adsorption and conformational analysis of recombinant human BMP-2 (rhBMP-2) on modified titanium surfaces.
Evaluation of the sustained osteogenic function of adsorbed rhBMP-2.

Main Results:

Anodic oxidation treatment maintained the alpha-helix and beta-sheet structures of rhBMP-2.
Acid-alkali treatment led to significant conformational changes in rhBMP-2, decreasing alpha-helix content.
rhBMP-2 on anodic oxidation treated titanium sustained osteogenic function longer, despite lower adsorption, compared to acid-alkali treated titanium.

Conclusions:

Surface modification significantly regulates the structure and conformation of BMP-2.
The structural integrity of BMP-2 on implant surfaces directly influences its long-term osteogenic efficacy.
Optimizing titanium surface properties is critical for maximizing the therapeutic potential of BMP-2 in bone regeneration.