A Method to Amplify Cardiac Stem Cells In-Vitro and In-Vivo
Scientific Relevance
Mesenchymal stem cells (MSCs) are bone marrow derived stem cells that may have clinical applicability for the treatment of diseases such as myocardial infarction and heart failure. The discovery by University of Miami researchers that MSCs stimulate proliferation of Cardiac Stem Cells (CSCs) may eliminate the need for tissue biopsy when using CSCs for therapeutic purposes.
Commercial Opportunity
Heart disease has been the leading cause of death in the United States for the past 80 years and is a major cause of disability. Heart disease also results in substantial health-care expenditures. For example, coronary heart disease is projected to cost an estimated $151.6 billion in direct and indirect costs in 2007. CSC are already being used as a therapy to treat patients with heart disease. This invention makes the use of CSCs more accessible since it accelerates their growth in the heart.
Competitive Advantage
Cardiac stem cells, while highly promising as a therapy, require a tissue biopsy and a long period of growth in the laboratory. Results shown by the University of Miami demonstrate that injections of MSCs into pig hearts cause massive proliferation of CSCs. MSCs can thus be used to accelerate the growth of CSCs in vitro or can be used to amplify CSCs in vivo, and thereby may eliminate the need for the tissue biopsy.
Isolation of Stem Cell Precursors and Expansion in Non-Adherent Conditions
Scientific Relevance
The invention relates to stem cell isolation, expansion and culturing.
Commercial Opportunity
The use of bone marrow derived mesenchymal stem cells (MSC) has been proposed for a number of regenerative therapies including repair of myocardial tissue. However, in vivo studies have demonstrated minimal integration of MSC into cardiac tissue. As the MSC are grown as adherent cells in plastic tissue culture flasks we have hypothesized that the lack of a substrate for the MSC to adhere results in apoptosis. A number of stem cell populations have been shown to grow as spheres, including neural stem cells and cardiac stem cells suggesting that stem cells exist as spheres in vivo and not as adherent cells. Therefore we developed culture conditions for generation of MSC that proliferate in spheres. We have identified methods for isolating MSC precursors and expanding MSC under non adherent conditions. Inventors at the University of Miami have discovered a novel way to formulate MSC to enable enhanced integration of MSC into cardiac tissue and provide repair of ischemic tissue.
Competitive Advantage
Unique method that cultures and expands stem cells providing a formulation with greater potential for integration into tissues in vivo.
