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Updated: Feb 11, 2026
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Fabrication of a Biomimetic Nano-Matrix with Janus Base Nanotubes and Fibronectin for Stem Cell Adhesion
Published on: May 10, 2020
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Fibronectin modified TiO2 nanotubes modulate endothelial cell behavior.
Ziyang Jin1, Xufeng Yan1, Guiyong Liu2
11 School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China.
Journal of Biomaterials Applications
|May 5, 2018
Summary
This study developed novel titanium dioxide nanotubes coated with fibronectin to improve cardiovascular stent biocompatibility. This enhanced surface promotes endothelial cell function, potentially reducing stent thrombosis.
Area of Science:
- Biomaterials Science
- Cardiovascular Engineering
- Surface Chemistry
Background:
- Cardiovascular disease poses a significant global health risk.
- Current titanium (Ti) stents face limitations, primarily late stent thrombosis, due to poor re-endothelialization.
- Improving the biocompatibility of cardiovascular implants is crucial for patient outcomes.
Purpose of the Study:
- To design and fabricate a novel cardiovascular titanium implant with enhanced surface biocompatibility.
- To investigate the potential of fibronectin-modified titanium dioxide (TiO2) nanotubes for improved stent performance.
- To evaluate the in vitro cellular response to the modified implant surface.
Main Methods:
- Fabrication of TiO2 nanotubes via anodization (110 nm diameter, 30 V).
- Immobilization of fibronectin onto TiO2 nanotubes using polydopamine.
- Surface characterization using XPS, FE-SEM, AFM, and contact angle measurements.
- In vitro assessment of human umbilical vein endothelial cells (HUVECs) using immunofluorescence staining, CCK-8 assay, and measurement of nitric oxide (NO) and prostacyclin (PGI2) release.
Main Results:
- Successful fabrication and characterization of fibronectin-immobilized TiO2 nanotubes.
- Demonstrated enhanced surface wettability and successful fibronectin immobilization.
- Confirmed support for HUVEC adhesion, proliferation, and maintenance of normal cellular functions (NO and PGI2 release).
Conclusions:
- Fibronectin-modified TiO2 nanotubes represent a promising strategy for enhancing cardiovascular implant biocompatibility.
- The developed surface modification technique shows potential for fabricating next-generation cardiovascular stents with reduced thrombosis risk.
- These findings offer a pathway for improving the long-term efficacy of cardiovascular implants.
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