Method of tissue repair using a piezoelectric scaffold
First Claim
1. A method for repairing an injury to bone or cartilage tissue in a subject comprising the steps ofpreparing an electroactive scaffold comprisinga three dimensional matrix of electrospun poly(vinylidene fluoride trifluoroethylene) (PVDF-TrFE) copolymer fibers formed by electrospinning the copolymer at an electric potential of at least between 15 to 30 kV, anda growth factor capable of promoting the differentiation of the mesenchymal stem cell into a osteogenic or chondrogenic phenotype,wherein the fiber matrix forms a scaffold for supporting cell growth and differentiation;
- and wherein the scaffold conditions are sufficient to induce differentiation of a mesenchymal stem cell into either an osteogenic or chondrogenic phenotype; and
implanting the scaffold at the site of injury in the subject, wherein the new bone or cartilage progenitor is formed on the scaffold thereby repairing the injury.
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Abstract
Provided is an electroactive structure and method for growing isolated differentiable cells comprising a three dimensional matrix of fibers formed of a biocompatible synthetic piezoelectric polymeric material, wherein the matrix of fibers is seeded with the isolated differentiable cells and forms a supporting scaffold for growing the isolated differentiable cells, and wherein the matrix of fibers stimulates differentiation of the isolated differentiable cells into a mature cell phenotype on the structure.
85 Citations
8 Claims
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1. A method for repairing an injury to bone or cartilage tissue in a subject comprising the steps of
preparing an electroactive scaffold comprising a three dimensional matrix of electrospun poly(vinylidene fluoride trifluoroethylene) (PVDF-TrFE) copolymer fibers formed by electrospinning the copolymer at an electric potential of at least between 15 to 30 kV, and a growth factor capable of promoting the differentiation of the mesenchymal stem cell into a osteogenic or chondrogenic phenotype, wherein the fiber matrix forms a scaffold for supporting cell growth and differentiation; - and wherein the scaffold conditions are sufficient to induce differentiation of a mesenchymal stem cell into either an osteogenic or chondrogenic phenotype; and
implanting the scaffold at the site of injury in the subject, wherein the new bone or cartilage progenitor is formed on the scaffold thereby repairing the injury. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- and wherein the scaffold conditions are sufficient to induce differentiation of a mesenchymal stem cell into either an osteogenic or chondrogenic phenotype; and
Specification