Abstract:
본 발명은 세포내 유전자 전달용 복합체에 관한 것으로서, 생분해성 결합을 포함하는 양이온성 고분자 및 암 표적 물질을 포함하는 것을 특징으로 하는 본 발명에 따른 세포내 유전자 전달용 복합체는, 암세포를 표적으로 하여 안전하고 효율적인 유전자의 전달이 가능하므로 다양한 유전자를 이용한 암 치료에 이용될 수 있다.
Abstract:
PURPOSE: An intracellular gene delivery composite containing a cationic polymer and cancer-targeting substances is provided to enable cancer therapy using various genes. CONSTITUTION: An intracellular gene delivery composite contains a cationic polymer and cancer-targeting substance. The cationic polymer has ester linkage, amide bond, disulfide bond, phosphate bond, or combination thereof. The cationic polymer is polyethylene imide(PEI), poly-L-lysine(PLL), chitosan, or dendrimer. The cancer-targeting substance is RGD peptide, NGR peptide, transferring, or folate. The gene is gDNA, cDNA, pDNA, mRNA, tRNA, rRNA, siRNA, miRNA, or antisense nucleotide. A method for preparing the composite comprises a step of conjugating the cancer-targeting substance to the cationic polymer using polyethylene glycol.
Abstract:
PURPOSE: A polynucleotide delivering complex containing RVG peptide-conjugated cationic polymers is provided to effectively and safely deliver polynucleotides to target cells. CONSTITUTION: A polynucleotide delivering complex contains RVG(rabies virus glycoprotein) peptide-conjugated cationic polymers. The polymers have ester bond, amide bond, disulfice bond, phosphate bond, or combination thereof. The cationic polymers are polyethylene imine(PEI), poly-L-lysine(PLL), chitosan, or dendrimer. The polynucleotide delivering complex has non-peptidyl polymers between the RVG peptide and cationic polymers. The non-peptidyl polymers are polyethylene glycol.
Abstract:
PURPOSE: A manufacturing method of membrane is provided to form nanopores necessary for DNA analysis by introducing specific functional group on a wall of nanopores. CONSTITUTION: A membrane comprises a supporting member(100) and a polymer layer(200). The polymer layer is located above the supporting member, and comprises multiple nanopores(80). The multiple nanopores have inner walls, and the walls are comprised of polymer material of `end substituted with functional group` block structure. The functional group may be one of -COOH, -NH2, and -SH. The block structure of polymer material may be PMMA block(60). The membrane manufacturing method comprises the following steps. The alignment layer is formed into PS-ran-PMMA on the substrate including the sacrificing layer. The solution including PS-b-PMMA-diCOOH is applied on the alignment layer to form the polymer layer. The polymer layer is dipped in the acetic acid to form multiple nanopores on the polymer layer with `PMMA block as inner wall.
Abstract:
The present invention relates to a complex for nucleic acid delivery comprising a biopolymer whereon a target peptide is combined and poly nucleic acid and, more desirably, the provision of the complex for nucleic acid delivery wherein the poly nucleic acid and a biopolymer which is produced by combination of a cationic polymer connected with biodegradable bond and the target peptide are combined. The complex for nucleic acid delivery according to the present invention comprises a biodegradable polymer, a target substance, and the poly nucleic acid, thereby selectively delivering nucleic acid to target cells like cancer cells and being degradable in the cells. Accordingly, the complex for delivering nucleic acid to the cell according to the present invention has useful effect in minimizing toxicity due to degradability in the cells as well as the amount of therapeutic nucleic acid induced into normal cells by the use of poly nucleic acid in case of being used for gene therapies against various diseases, thereby maximizing the utilization rate of the nucleic acid injected into the body.