摘要:
The present invention relates to a neuronal differentiation method of adult stem cells using small molecules, more particularly to a method for inducing differentiation of adult stem cells into nerve cells using small molecules, which enables effective differentiation into nerve cells and, thus, is useful in treating intractable CNS disorders such as Parkinson's disease, dementia, Alzheimer's disease and spinal cord injury.
摘要:
The present invention relates to a tissue-engineered scaffold prepared by using a biocompatible and injectable hydrogel, and particularly to a tissue-engineered scaffold capable of regenerating or recovering an injured spinal nerve for central nervous system after being implanted to connect neurons, prepared by combining an adult stem cell or a nerve cell with a physiologically active material on tissue-engineered carriers comprising biocompatible and temperature-sensitive polyethylene glycol/polyester block copolymer or biocompatible and injectable hydrogel made of small intestinal submucosa tissue powder with sol-gel phase transition behavior.
摘要:
The present invention relates to a biocompatible and thermosensitive poly(ethylene glycol)/polyester block copolymer and a method of its preparation thereof, and particularly to a multi-functional intelligent hydrogel polymer comprising a hydrophilic part of a poly(ethylene glycol) (PEG) having a low molecular weight and a hydrophobic part comprising an ester-based caprolactone (CL) segment as an essential ingredient and further comprising a para-dioxanone (PDO) segment, a trimethylene carbonate (TMC) segment or a PDO/TMC copolymer containing the PDO and the TMC segments in a predetermined ratio, which easily forms a desired-shaped gel and decomposes or disperses without necessitating the operation process for removing the gel due to the temperature-dependent phase transition caused by the coagulation and the expansion of polymer micelles comprising a hydrophilic part and a hydrophobic part, thus being applicable to a drug delivery system or a porous support for tissue engineering purpose.
摘要:
The present invention relates to preparation and application of a temperature-sensitive polyethylene glycol/polyester block copolymer having a bioactive functional group introduced into a side chain thereof. More specifically, it relates to a temperature-sensitive polyethylene glycol/polyester block copolymer including a lactide segment having a bioactive functional group introduced into a side chain thereof and a method for preparing same. The temperature-sensitive polyethylene glycol/polyester block copolymer according to the present invention having a bioactive functional group introduced into a side chain thereof can be widely used as a drug delivery system, a support for tissue engineering, an adhesion inhibitor, etc.
摘要:
The present invention relates to preparation and application of a temperature-sensitive polyethylene glycol/polyester block copolymer having a bioactive functional group introduced into a side chain thereof. More specifically, it relates to a temperature-sensitive polyethylene glycol/polyester block copolymer including a lactide segment having a bioactive functional group introduced into a side chain thereof and a method for preparing same. The temperature-sensitive polyethylene glycol/polyester block copolymer according to the present invention having a bioactive functional group introduced into a side chain thereof can be widely used as a drug delivery system, a support for tissue engineering, an adhesion inhibitor, etc.
摘要:
Provided is a drug delivery system for control of initial burst of a drug. More particularly, there are provided a drug delivery formulation including: a granule containing a biodegradable polymer and a drug; and a temperature-sensitive hydrogel, and a method for preparing the same. The presently disclosed drug delivery formulation can be prepared via a relatively simple process and allows a drug to be released slowly at a constant rate without initial burst and thus maintains a constant blood level of the drug for a long period of time. Consequently, it is capable of preventing the initial burst of the existing injection-type drug delivery formulations and slow-release granules and providing a desired release profile, including sustained release with time.
摘要:
The present invention relates to a method for preparing a biocompatible small intestinal submucosa hydrogel with a controllable in-vivo degradation period, more particularly to a method for preparing a small intestinal submucosa hydrogel which is formed in a solution phase by forming chemical crosslinkages by solubilizing a biocompatible small intestinal submucosa powder and allows the degradation period of a gel formed during in-vivo injection by controlling the degree of crosslinking and a method for preparing a small intestine submucosa drug carrier or a small intestine submucosa support using the hydrogel.
摘要:
Provided is a drug delivery system for control of initial burst of a drug. More particularly, there are provided a drug delivery formulation including: a granule containing a biodegradable polymer and a drug; and a temperature-sensitive hydrogel, and a method for preparing the same. The presently disclosed drug delivery formulation can be prepared via a relatively simple process and allows a drug to be released slowly at a constant rate without initial burst and thus maintains a constant blood level of the drug for a long period of time. Consequently, it is capable of preventing the initial burst of the existing injection-type drug delivery formulations and slow-release granules and providing a desired release profile, including sustained release with time.