Traversal of nucleic acid molecules through a fluid space and expression in repair cells
Disclosed are methods for use in transferring nucleic acids into cells at a wound site associated with a fluid space. These gene transfer protocols are suitable for use in transferring various nucleic acids into cartilage, cardiac muscle, and other tissues, and have many uses including treating diseases such as arthritis and ischemic heart disease, and promoting wound healing. The invention further disclosed pharmaceutical compositions that may be used in the practice of the invention to transfer the nucleic acid of interest. Such compositions include any multi-partitioned biocompatible matrix in combination with multiple nucleic acids of interest.
1. A method for treating a tissue injury associated with ischemic heart disease comprising directly implanting a matrix-gene composition comprising an angiogenic gene operably linked to a promoter and a biocompatible matrix capable of supporting cellular ingrowth into an injured ischemic region of a heart, wherein the ischemic region comprises myocardial tissue contacting a pericardial fluid space, wherein the biocompatible matrix comprises collagen, and wherein the composition transfers the angiogenic gene to cells associated with the fluid space and induces an angiogenic response in the tissue, thereby stimulating blood vessel formation in the ischemic region of the heart.
2. The method of claim 1 wherein the angiogenic gene is an FGF gene, a VEGF gene, a TGF gene, a TNFα gene, an HGF gene, or a PDGF gene.
3. The method of claim 1 wherein the biocompatible matrix is a collagen, hydroxyapatite, lactic acid polymer, or fibrin matrix.