PROGRAMMED-RELEASE, NANOSTRUCTURED BIOLOGICAL CONSTRUCT FOR STIMULATING CELLULAR ENGRAFTMENT FOR TISSUE REGENERATION

摘要

A biologically engineered construct comprising of a polymeric biomatrix (100), designed with a nanophase texture (106), and a therapeutic agent (104 or 300) for the purpose of tissue regeneration and/or controlled delivery of regenerative factors and therapeutic substances after it is implanted into tissues, vessels, or luminal structures within the body. The therapeutic agent (104 or 300) may be a therapeutic substance (104) or a biological agent (300), such as antibodies, ligands, or living cells. The nanophase construct is designed to maximize lumen size, promote tissue remodeling, and ultimately make the implant more biologically compatible. The nano-textured polymeric biomatrix (100) may comprise one or more layers containing therapeutic substances (104) and/or beneficial biological agents (300) for the purpose of controlled, physiological, differential substance/drug delivery into the luminal and abluminal surfaces of the vessel or lumen, and the attraction of target molecules/cells that will regenerate functional tissue. The topographic and biocompatible features of this layered biological construct provides an optimal environment for tissue regeneration along with a pro grammed -release, drug delivery system to improve physiological tolerance of the implant, and to maximize the cellular survival, migration, and integration within the implanted tissues.