Projects per year
Restricted oxygen diffusion can result in central cell necrosis in engineered tissue, a problem that is exacerbated when engineering large tissue constructs for clinical application. Here we show that pre-treating human mesenchymal stem cells (hMSCs) with synthetic membrane-active myoglobin-polymer-surfactant complexes can provide a reservoir of oxygen capable of alleviating necrosis at the centre of hyaline cartilage. This is achieved through the development of a new cell functionalization methodology based on polymer-surfactant conjugation, which allows the delivery of functional proteins to the hMSC membrane. This new approach circumvents the need for cell surface engineering using protein chimerization or genetic transfection, and we demonstrate that the surface-modified hMSCs retain their ability to proliferate and to undergo multilineage differentiation. The functionalization technology is facile, versatile and non-disruptive, and in addition to tissue oxygenation, it should have far-reaching application in a host of tissue engineering and cell-based therapies.
- Bristol BioDesign Institute
APHTSCRC1-Full: 'Improved cartilage regeneration through the selection and use of highly chondrogenic subpopulations of bone marrow mesenchymal stem cells'
Hollander, A. P.
1/02/13 → 1/10/14
Artificial membrane binding proteins stimulate oxygenation of stem cells during engineering of large cartilage tissue
["James Armstrong", "Armstrong, J. (Contributor) & Perriman, A. W. (Creator), University of Bristol, 17 Jun 2015
- School of Physics - Associate Professor in Physics
- Infection and Immunity
- The Bristol Centre for Nanoscience and Quantum Information
Person: Academic , Member