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Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
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Proteomic evaluation of human osteoblast responses to titanium implants over time
Francisco Romero-Gavilán1, Andreia Cerqueira1, Iñaki García-Arnáez2
1Department of Industrial Systems Engineering and Design, Universitat Jaume I, Castellón de la Plana, Spain.
Journal of Biomedical Materials Research. Part A
|September 2, 2022
Summary
Sandblasted acid-etched titanium (SAE-Ti) implants enhance human osteoblast (HOb) mineralization and gene expression. Proteomic analysis reveals SAE-Ti influences key pathways, explaining its osteogenic properties for improved osseointegration.
Area of Science:
- Biomaterials Science
- Proteomics
- Cell Biology
Background:
- Titanium (Ti) is crucial for bone prostheses due to biocompatibility.
- Sandblasted acid-etched titanium (SAE-Ti) is a common surface modification.
- Understanding cellular responses to SAE-Ti is vital for osseointegration.
Purpose of the Study:
- To investigate the proteomic profiles of human osteoblasts (HOb) cultured with SAE-Ti.
- To elucidate the biological responses and signaling pathways affected by SAE-Ti.
- To correlate proteomic changes with osteogenic activity.
Main Methods:
- Human osteoblasts (HOb) cultured with SAE-Ti.
- Proteomic analysis using nano-liquid chromatography-tandem mass spectrometry (nLC-MS/MS).
- Bioinformatic analysis of proteomic data and in vitro characterization of osteoblast function.
Main Results:
- 2544 distinct proteins identified; significant differences in EIF2, mTOR, insulin, and IGF pathways.
- Proteomic profiles revealed changes in proteins related to adhesion, immunity, oxidative stress, and osteogenesis.
- SAE-Ti exposure increased HOb mineralization rate and expression of key osteogenic genes (COLI, RUNX2, mTOR).
Conclusions:
- Proteomic profiles provide insights into SAE-Ti's osteogenic properties.
- SAE-Ti influences critical signaling pathways involved in early osseointegration.
- This study enhances understanding of biomaterial-driven bone healing.
