摘要:
A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solved therein; thereafter forming it into a desirable matrix shape; lyophilizing or drying it at a low temperature or room temperature until the matrix surface is hardened; and drying it again in order to remove the water and the organic solvent.
摘要:
Disclosed is a polymer-siRNA delivery carrier in which a siRNA is combined with a polymer and the use thereof. More specifically, there is disclosed a stable in vivo polymer-siRNA delivery carrier in which a polymer and a siRNA are combined by using charge interaction and biodegradable covalent bonding at the same time and the use thereof.The polymer-siRNA delivery carrier in which a polymer and a siRNA are combined by using charge interaction and biodegradable covalent bonding at the same time has a high siRNA deliver efficiency to a target portion in vivo. Hence, according to the polymer-siRNA binder, the siRNA for treatment can be effectively delivered to a target portion such as in vivo cancer tissue, and the like even with administration of a relatively low concentration, and thus widely used for the treatment of various kinds of diseases.
摘要:
Disclosed are a human serum albumin-siRNA carrier system having siRNA bound to human serum albumin and a user thereof, and especially, human serum albumin-siRNA carrier system, which has a biodegradable covalent bond between human serum albumin polymer and siRNA and is stable in a living body, and a user thereof.The human serum albumin-siRNA carrier system having the biodegradable covalent bond between the human serum albumin and the siRNA exhibits high siRNA delivery efficiency to a target site in the living body. Therefore, the human serum albumin-siRNA carrier system may allow siRNA for therapy to be efficiently delivered to a target site such as cancer tissues in the living body even by being administrated in a relatively low concentration, which may result in a wide use for therapies of various diseases.
摘要:
The present invention relates to recombinant albumins fused with poly-cysteine peptide and methods for preparing the same, more precisely recombinant albumins in which cysteines that can be used for drug binding are amplified at N-terminal and C-terminal of the albumin and methods for preparing the same. The recombinant albumin of the present invention demonstrates improved albumin-drug conjugation efficiency when it is used for drug delivery system, indicating that it can effectively deliver a large amount of drug to a target tissue. At the same time, the recombinant albumin of the present invention can be used as an excellent drug deliverer with reduced side effects, compared with the conventional albumin carriers, by regulating the amount of drug conjugated to each unit of albumin by regulating the number of cysteine fused thereto. In addition, the recombinant albumin of the present invention can be used for the screening of a novel drug and for the non-invasive real-time diagnosis and treatment of disease by combining with a fluorescent material or a contrast agent for molecular imaging.
摘要:
Disclosed are nanoparticles of a light emissive polymer, comprising nanoparticles of a cyano-substituted poly(arylene vinylene) polymer; and a biocompatible surfactant adsorbed to the surface of the nanoparticles of the polymer, and preparation method thereof, wherein the method comprises: (1) uniformly mixing a dialdehyde monomer represented by a general formula OHC—Ar1—CHO, a dicyanide monomer represented by a general formula NC—Ar2—CN, and a liquid surfactant; (2) adding water to the resulting mixture to prepare an aqueous micelle dispersion; and (3) adding a polymerization catalyst to the aqueous micelle dispersion, followed by carrying out colloidal polymerization of the resulting mixture at room temperature under an atmosphere. The nanoparticles of the light emissive polymer of the invention are stabilized with a biocompatible surfactant, so that it can form a stable aqueous dispersion phase, and has particle size and fluorescence efficiency suitable for a biomolecular marker or a cell or in vivo imaging; therefore, it can be used as a cell or in vivo light emission contrast agent.
摘要:
A hybrid bioreactor for cell culture is disclosed. To simultaneously apply compressive strain for cell differentiation and shear strain for cell proliferation to cells, the hybrid bioreactor includes a plurality of reactor tube assemblies (100), a compressive strain motor (5), a shear strain motor (25), a lower anchor mount (20) having a plurality of toothed anchors (70) to respectively anchor the lower ends of the reactor tube assemblies (100) to the lower anchor mount (20), a ball screw (90) operated in conjunction with the compressive strain motor (5), an upper anchor mount (60) which engages with the ball screw (90) to vertically move upward and downward and having a plurality of compressive strain anchors (80) to anchor the upper ends of the reactor tube assemblies (100) to the upper anchor mount (60), a power transmission unit to transmit the rotating force of the shear strain motor (25) to the toothed anchors (70).
摘要:
A hybrid bioreactor for cell culture is disclosed. To simultaneously apply compressive strain for cell differentiation and shear strain for cell proliferation to cells, the hybrid bioreactor includes a plurality of reactor tube assemblies (100), a compressive strain motor (5), a shear strain motor (25), a lower anchor mount (20) having a plurality of toothed anchors (70) to respectively anchor the lower ends of the reactor tube assemblies (100) to the lower anchor mount (20), a ball screw (90) operated in conjunction with the compressive strain motor (5), an upper anchor mount (60) which engages with the ball screw (90) to vertically move upward and downward and having a plurality of compressive strain anchors (80) to anchor the upper ends of the reactor tube assemblies (100) to the upper anchor mount (60), a power transmission unit to transmit the rotating force of the shear strain motor (25) to the toothed anchors (70).