Vascularization enhanced intestinal submucosa tissue graft constructs prepared by seeding intestinal submucosa tissue in vitro with endothelial cells or endothelial cell precursors

摘要

An intestinal submucosa tissue graft construct for use in repairing diseased or damaged tissues in non-human animals is provided. The graft construct comprises vertebrate intestinal submucosa tissue, added endothelial cells, and at least one additional preselected, exogenous population of cells, which enhances initiation of the formation of vessel-like structures in the graft. The preselected population of cells can be a population of non-keratinized or keratinized epithelial cells or a population of mesodermally derived cells selected from the group consisting of fibroblasts, smooth muscle cells, skeletal muscle cells, cardiac muscle cells, multi-potential progenitor cells, pericytes, osteogenic cells, and any other suitable cell type, preferably selected based on the tissue to be repaired. Methods for enhancing the vascularization in vivo of these intestinal submucosa tissues graft constructs and for preparing these grafts constructs are also provided.