Curcumin cross-linked collagen aerogels with controlled anti-proteolytic and pro-angiogenic efficacy

Biomed Mater. 2016 Aug 10;11(4):045011. doi: 10.1088/1748-6041/11/4/045011.

Abstract

This paper elucidates the development of a curcumin cross-linked collagen aerogel system with controlled anti-proteolytic activity and pro-angiogenic efficacy. The results of this study showed that in situ cross-linking of curcumin with collagen leads to the development of aerogels with enhanced physical and mechanical properties. The integrity of collagen after cross-linking with curcumin was studied via FTIR spectroscopy. The results confirmed that the cross-linking with curcumin did not induce any structural changes in the collagen. The curcumin cross-linked collagen aerogels exhibited potent anti-proteolytic and anti-microbial activity. Scanning electron and atomic force microscopic analysis of curcumin cross-linked collagen aerogels showed a 3D microstructure that enhanced the adhesion and proliferation of cells. The highly organized geometry of collagen-curcumin aerogels enhanced the permeability and water-retaining ability required for the diffusion of nutrients that aid cellular growth. The pro-angiogenic properties of collagen-curcumin aerogels were ascribed to the cumulative effect of the nutraceutical and the collagen molecule, which augmented the restoration of damaged tissue. Further, these aerogels exhibited controlled anti-proteolytic activity, which makes them suitable 3D scaffolds for biomedical applications. This study provides scope for the development of biocompatible and bioresorbable collagen aerogel systems that use a nutraceutical as a cross-linker for biomedical applications.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / chemistry
  • Biocompatible Materials / chemistry*
  • Chick Embryo
  • Chorioallantoic Membrane
  • Collagen / chemistry*
  • Cross-Linking Reagents / chemistry
  • Curcumin / chemistry*
  • Dietary Supplements
  • Female
  • Hemolysis
  • Humans
  • Hydrogels / chemistry
  • Kinetics
  • Materials Testing
  • Neovascularization, Physiologic
  • Permeability
  • Porosity
  • Rats
  • Rats, Wistar
  • Rheology
  • Stress, Mechanical
  • Tensile Strength
  • Tissue Scaffolds / chemistry*
  • Wound Healing

Substances

  • Anti-Bacterial Agents
  • Biocompatible Materials
  • Cross-Linking Reagents
  • Hydrogels
  • Collagen
  • Curcumin