Abstract:
본 발명은 폴리에틸렌옥사이드 (poly(ethylene oxide), PEO)와 폴리아스파르트아마이드 (polyaspartamide)로 구성되는, N-아세틸글루코사마이드가 결합된 PASPG (P[Asp(Sper)-b-PEO-GlcNAc]) 공중합체, 상기 PASPG 공중합체를 포함하는 유전자 전달체 및 섬유증의 예방 또는 치료용 조성물에 관한 것이다. 본 발명에 따른 PASPG 공중합체는 DNA에 높은 결합능을 나타내어 PASPG/DNA 복합체를 형성하며, 상기 PASPG/DNA 복합체는 200 nm이하의 작은 크기로 내포 작용을 통한 유전자 전달이 가능하고, 세포 독성이 매우 낮으며, 비멘틴-발현 세포에서 우수한 트렌스펙션 효율을 가지고 있어, 유전자 전달체 또는 섬유증의 예방 또는 치료용 조성물로 유용하게 이용될 수 있다.
Abstract:
The present invention relates to a N-acetylglucosaminide-combined P[Asp(Sper)-b-PEO-GlcNAc] (PASPG) copolymer comprising polyethylene oxide (PEO) and polyaspartamide, a gene transporter including the PASPG copolymer, and a composition for preventing or treating fibrosis. The PASPG copolymer according to the present invention displays a remarkable combining power to the DNA to form a PASPG/DNA compound, wherein the PASPG/DNA compound is able to transport a gene through an endocytosis with a size equal to or less than 200 nm, and has a very low cytotoxicity and excellent transfection efficiency, thereby can be effectively be used as a gene transporter or a composition for preventing or treating fibrosis.
Abstract:
본 발명은 신장세포 특이적인 펩타이드 및 폴리에스테르아민 중합체를 포함하는 유전자 전달체에 관한 것이다. 본 발명에 따른 비바이러스성 유전자 전달체인 신장세포 특이적 펩타이드-폴리에스테르아민은, 현저히 낮은 세포독성 및 높은 트랜스펙션 효율을 제공할 수 있어 효과적인 유전자 전달체로서 사용할 수 있다. 이러한 상기 유전자 전달체를 이용하는 경우, 치료 유전자인 간세포 성장인자 (Hepatocyte Growth Factor; HGF) 유전자를 목적하는 부위에 효율적으로 전달할 수 있고, 신장에서의 높은 발현효율을 나타내어 신장섬유화 (fibrosis)를 억제할 수 있을 뿐만 아니라, 크레아티닌 농도와 요소농도를 크게 낮출 수 있기 때문에 신장섬유증 예방 및 치료에 효율적으로 활용될 수 있다.
Abstract:
PURPOSE: A powder inhaler is provided to enable a user to easily inhale powder by a minimum effort by improving an air path. CONSTITUTION: A powder inhaler comprises an inhaling pipe, a powder container(550), a first connecting pipe(300), and a second connecting pipe(400). On an upper side end of the inhaling pipe, an air inlet is formed, and an air outlet is formed on a lower side end of the inhaling pipe. The powder container accepts powder inside. The first connecting pipe comprises a first air inlet connected to the inhaling pipe, and a first air outlet connected to the powder container. The second connecting pipe comprises a second air inlet connected to the powder container, and a second air outlet connected to the inhaling pipe. The first air inlet is on an upper side of the second air outlet. Inside the inhaling pipe, a shielding member for shielding air flow is arranged between the first air inlet and the second air outlet.
Abstract:
PURPOSE: A lactosylated polyethylene glycol-chitosan-g-spermine copolymer is provided to have excellent transduction efficiency of hepatocyte targeting, while having low cytotoxicity. CONSTITUTION: A galactosylated polyethylene glycol-chitosan-graft-spermine copolymer is in chemical formula 1. A manufacturing method of the copolymer comprises a step of synthesizing polyethylene glycol by reacting galactose-containing glycoprotein, and a bifunctional polyethylene glycol; a step of manufacturing a chitosan-graft-spermine copolymer by reacting chitosan and spermine; and a step of reacting the galactosylated polyethylene glycol and the chitosan-graft-spermine copolymer.
Abstract:
PURPOSE: Self radiation-emitting nano particles for radiation-based therapies are provided to minimize the influence of irradiation with respect to normal cells except cancer cells by including a recognition part which is specified to specific cancer cells. CONSTITUTION: A recognition part(100) which is specified to specific cancer cells is combined on the surface of a main body(200). Self radiation-emitting isotope(330), a fluorescent material(310), and magnetic material(320) are arranged in the main body. The main body is composed of a nontoxic inorganic material or organic material. The recognition part is composed of one or more selected from an antibody(110), protein(120), a DNA aptamer, and an RNA aptamer(130).