摘要:
Systems and methods for magnetic targeting of therapeutic particles are provided. Therapeutic particles comprise one or more magnetic or magnetizable materials and at least one therapeutic agent. Therapeutic particles are specifically targeted using uniform magnetic fields capable of magnetizing magnetizable materials, and can be targeted to particular locations in the body, or can be targeted for capture, containment, and removal. Also provided are bioresorbable nanoparticles prepared without the use of organic solvents, and methods for therapeutically using such bioresorbable nanoparticles.
摘要:
The invention relates to compositions and methods for reverse gene therapy, wherein a gene therapy vector encoding a gene product (e.g. a protein) which is usually only expressed in cells of an abnormal tissue is delivered to a cell of an animal afflicted with a disease or disorder to alleviate the disease or disorder. In one embodiment, a plasmid vector encoding HERG (A561V) protein is delivered to a cell of an animal afflicted with re-entrant atrial flutter-mediated cardiac arrhythmia.
摘要:
The invention relates to compositions and methods for reverse gene therapy, wherein a gene therapy vector encoding a gene product (e.g. a protein) which is usually only expressed in cells of an abnormal tissue is delivered to a cell of an animal afflicted with a disease or disorder to alleviate the disease or disorder. In one embodiment, a plasmid vector encoding HERG (A561V) protein is delivered to a cell of an animal afflicted with re-entrant atrial flutter-mediated cardiac arrhythmia.
摘要:
The invention relates to implantable bioprostheses (e.g. implantable biological tissues) and to compositions and methods for stabilizing them. Implantable bioprostheses stabilized as described herein exhibit improved mechanical properties and reduced post-implantation calcification. The implantable bioprosthesis is made by contacting a bioprosthesis (e.g. a tissue obtained from an animal or an article comprising a tissue and a synthetic material) with a polyepoxy amine compound.
摘要:
The invention relates to implantable bioprostheses (e.g. implantable biological tissues) and to compositions and methods for stabilizing them. Implantable bioprostheses stabilized as described herein exhibit improved mechanical properties and reduced post-implantation calcification. The implantable bioprosthesis is made by contacting a bioprosthesis (e.g. a tissue obtained from an animal or an article comprising a tissue and a synthetic material) with a polyepoxy amine compound.
摘要:
The invention relates to compositions and methods for delivering a virus vector to an animal. The compositions include compositions which comprise a hydrogel matrix (e.g. a collagen matrix which can comprise a poloxamer or an alginate) containing a virus vector therein in a transfectious form. The invention also includes methods of making such hydrogel precursor mixtures and hydrogel matrices, including particles, devices, bulk materials, and other objects which comprise, consist of, or are coated with such mixtures or matrices. The invention further relates to compositions comprising a hydrogel precursor mixture having a virus vector suspended therein, which, when administered to an animal, gel to form a hydrogel matrix containing a virus vector therein in a transfectious form. Methods of delivering a virus vector to an animal tissue are also described.
摘要:
Naturally-derived bioprosthetic materials are treated with epoxide crosslinking agents. In some embodiments, the tissue is crosslinked with low molecular weight epoxides in aqueous solutions at high pH levels. In other embodiments, the tissue is crosslinked at physiologic pH levels with epoxide crosslinking agents catalyzed with tertiary or quaternary amines, such as Tris or imidazole. In an advantageous embodiment, bioprosthetic tissue is crosslinked and derivatized with an anticalcification agent, such as a polyphosphonate anticalcification agent, using a polyphosphonate:polyepoxide monoadduct.
摘要:
Compositions and processes featuring, in one aspect, a process of purifying a protein diagnostic for atherosclerosis comprising separating out of primate and human atherosclerotic tissue a Gla-containing protein of molecular weight of about 80,000.
摘要:
A water-soluble photo-activatable polymer including: a photo-activatable group adapted to be activated by an irradiation source and to form a covalent bond between the water-soluble photo-activatable polymer and a matrix having at least one carbon; a reactive group adapted to covalently react with a biomaterial for subsequent delivery of the biomaterial to a cell; a hydrophilic group; and a polymer precursor. A composition including a monomolecular layer of the water-soluble photo-activatable polymer and a matrix having at least one carbon, wherein the monomolecular layer is covalently attached to the matrix by a covalent bond between the photo-activatable group and the at least one carbon. The composition further includes a biomaterial having a plurality of active groups, wherein the biomaterial is covalently attached to the monomolecular layer by covalent bonding between the active groups and reactive groups. Also provided is a method for delivery of a biomaterial to a cell.
摘要:
A polymer is provided according to structure I wherein Y is a thiol-reactive group and Z is an ionogenic group. The surface of a polymeric substrate is modified by contacting the surface with a polymer according to structure II or structure III and exposing the surface to ultraviolet light, optionally followed by contacting the modified surface with the polymer according to structure I.