Abstract:
본발명은갑각류에서유래된양전하를갖는다당류인키토산과카테콜합성물질을이용한췌장소도막의표면개질방법에관한것으로, 구체적으로, 본발명의표면개질방법에의해변형된췌장소도는기존의클러스터형태에서단일세포로쉽게부서지는성질이완화되고혈액과의초기접촉시나타나는염증매개물질활성화를억제하여혈액응고를방지하여이식초기의췌장소도손실을최소화할수 있고, 또한키토산이결합된췌장소도막 표면에폴리에틸렌글리콜과같은중합체를가교제로이용하여다층성표면개질을추가적으로도입하여숙주면역반응을최소화하고이식된췌장소도의생존기간을연장시킬수 있다.
Abstract:
PURPOSE: A capsule for encapsulating pancreas islet having modified surface and a preparation method thereof are provided to effectively block the attack of an immune cell. CONSTITUTION: A capsule for encapsulating pancreas islet having modified surface is as follows. Pancreas islet is encapsulated in a capsule comprised of alginate. The capsule surface is reformed by biocompatible polymer. In the biocompatible polymer, a functional radical is attached to the side chain or end thereof. The functional radical is selected from a group consisting of an amine radical, hydroxyl radical, a carboxyl radical, and a sulfone radical.
Abstract:
본 발명은 엑센딘-4(Exendin-4)가 도입된 췌장소도세포 및 이를 이용한 당뇨병 치료방법에 관한 것으로, 보다 상세하게는 렌티바이러스를 이용하여 엑센딘-4를 췌장소도세포에 도입하여 지속적으로 효과 단백질인 엑센딘-4 단백질의 분비를 유도하고, 인슐린의 분비능력을 향상시키며, 세포괴사를 줄이고, 주사시 발생할 수 있는 전신적인 부작용을 최소화하는 효과를 나타내므로, 상기 엑센딘-4가 도입된 췌장소도세포는 당뇨병 치료방법으로 유용하게 이용될 수 있다.
Abstract:
PURPOSE: A method for modifying the surface of pancreatic islets is provided to effectively reduce immune response and to induce antithrombogenicity effect. CONSTITUTION: A method for modifying the surface of pancreatic islet comprises: a step of activating PEG or derivatives thereof for conjugation of PEG or derivatives thereof on the surface of the pancreatic islet; a step of conjugating the activated PEG or derivatives thereof with an amine group on the surface; and a step of conjugating the terminal function groups of the PEG or derivatives with the bioactive complex. The bioactive complex is conjugated with heparin or derivatives thereof, and bioactivation materials. [Reference numerals] (AA) Pancreatic islet cells; (BB) Heparin catechol; (CC) 8-armed star shaped PEG
Abstract:
PURPOSE: A cationic phospholipids liposome containing 1,2-dioleoyl-sn-glycero-3-ethyl phosphocholine(DOPC) and sterol compounds is provided to enhance drug delivery efficiency and to remarkably reduce cytotoxicity. CONSTITUTION: A composition for lung-specific drug delivery comprises a cationic phospholipids nanoparticles containing 1,2-dioleoyl-sn-glycero-3-ethyl phosphocholine(DOPC) and sterol compounds. The sterol compounds are 3b-[N-(N',N'-dimethylaminoethane)-cabamyl]cholesterol(DC-Chol), stigmasterol, campesterol, sitosterol, ergosterol, lanosterol, dinosterol, gorgosterol, avenasterol, saringosterol, or fucosterol. The drug is anticancer drug.