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Universal surface modification using dopamine-hyaluronic acid conjugates for anti-biofouling
Sanghun Lee1, Semin Kim2, Junggeon Park1
1School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
International Journal of Biological Macromolecules
|November 22, 2019
Summary
A novel dopamine-hyaluronic acid conjugate (DA-HA) coating effectively prevents biofouling on various implantable materials. This surface modification reduces protein and cell adhesion, minimizing scar tissue formation and improving implant performance.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Regenerative Medicine
Background:
- Implantable medical devices are susceptible to biofouling, leading to adverse tissue reactions and impaired function.
- Biofouling involves protein and cell adhesion on material surfaces, causing foreign body responses and scar tissue.
- Existing anti-biofouling strategies often lack broad applicability or long-term efficacy.
Purpose of the Study:
- To develop a universal and effective surface modification method to mitigate biofouling on common biomaterials.
- To evaluate the anti-biofouling properties of a dopamine-hyaluronic acid conjugate (DA-HA) coating.
- To assess the in vivo performance of DA-HA coated implants in reducing foreign body response.
Main Methods:
- Synthesis of dopamine-hyaluronic acid conjugate (DA-HA).
- Coating of five common implantable substrates (polyimide, gold, PMMA, PTFE, PU) with DA-HA via self-polymerization.
- In vitro assessment of protein adsorption and cell adhesion on coated and uncoated surfaces.
- In vivo subcutaneous implantation of coated and uncoated substrates for 4 weeks to evaluate tissue response.
Main Results:
- DA-HA coating was successfully applied to diverse biomaterial surfaces.
- DA-HA modified surfaces exhibited significantly reduced non-specific protein adsorption and cell adhesion.
- Subcutaneous implantation of DA-HA coated materials resulted in decreased scar tissue formation compared to controls.
- The coating demonstrated broad applicability across multiple commonly used implant materials.
Conclusions:
- Dopamine-hyaluronic acid conjugate coating is a simple and effective strategy for creating anti-biofouling surfaces on various biomaterials.
- This approach holds significant potential for enhancing the performance and longevity of medical implants by minimizing biofouling and adverse tissue reactions.
- The universal nature of this coating makes it suitable for a wide range of biomedical applications where biofouling is a critical concern.
