Collagen affinity coating for surface binding of decorin and other biomolecules: Surface characterization

Citation

Sylvester, M. L. & Ratner, B. D. (2017). Collagen affinity coating for surface binding of decorin and other biomolecules: Surface characterization. Biointerphases, 12(2).

Abstract

The development of biomaterials that promote tissue reconstruction and regeneration can reduce the low level, chronic inflammation and encapsulation that impact the performance of today's medical devices. Specifically, in the case of implantable sensors, the host response often leads to poor device performance that discourages permanent implantation. Our goal is to present on medical implants bioactive molecules that can promote healing rather than scarring. Localized delivery of these molecules would also minimize the possibility of adverse tissue reactions elsewhere in the body. Toward this end, the authors have developed a collagen affinity coating that binds a number of potential healing molecules and can be attached to the surface of an implanted biomaterial. This allows the creation of a wide variety of natural surface coatings that can be evaluated and tailored to promote the desired healing response. To demonstrate the efficacy of this collagen affinity coating to biospecifically bind promising healing molecules to type I collagen in vivo, the antifibrotic proteoglycan decorin was utilized. Decorin binds and renders ineffective the protein transforming growth factor beta (TGF beta) that induces collagen scar production. Thus, an assembled, supramolecular structure of biomaterial-collagen-decorin-TGF beta is formed. A decorin surface coating was created and characterized, illustrating the potential of this type I collagen affinity coating for widespread use with a variety of promising healing molecules. Future studies will test the implant efficacy of this type of coating. (C) 2017 American Vacuum Society.

Keyword(s)

adsorbed protein films
deposition
expression
fibrillogenesis
fibromodulin
fibrosis
growth-factor-beta
i collagen
peptide
proteoglycans

Notes

Ez1iq
Times Cited:0
Cited References Count:26

Reference Type

Journal Article

Secondary Title

Biointerphases

Author(s)

Sylvester, M. L.
Ratner, B. D.

Year Published

2017

Date Published

1496275200

Volume Number

12

Issue Number

2

ISSN/ISBN

1934-8630

DOI

Artn 02c419
10.1116/1.4989835