Abstract:
A gene therapeutic agent for preventing and treating lung cancer using transmission of aerosol gene is provided to reduce the activation of Akt1 and induce apoptosis in a cancer cell through a system in which the aerosol of polyester amine/Akt1 siRNA complex is inhaled via nose. A gene therapeutic agent for preventing and treating lung cancer makes a lung tumor cell contact with reaction agent and gene carrier which reduces Akt1 activation. The reaction agent is siRNA, antisense molecule, antagonist, ribozyme, inhibitor, peptide or small molecule. A gene carrier is a polyester amine. The contract comprises aerosol transfer or transfer using liposome, nano liposome, ceramide containing nano liposome, proteosome, nano particle, calcium phosphorous-silicate nano particle, calcium phosphate nano particle, silicon dioxide nano particulate, nano crystalline corpuscle, semiconductor nano particle, poly(D-arginine), nano dendrimer, virus, and calcium phosphate nucleotide-mediated nucleotide. The reaction agent and gene carrier form complex. The pharmaceutical composition for preventing and treating lung cancer comprises gene therapeutic agent and carrier.
Abstract:
본 발명은 항암용 불포화 고급지방산 유도체 및 그 제조 방법에 관한 것으로, 용매나 촉매를 쓰지 않는 온도 처리의 간단한 방법으로 불포화 고급지방산에 폴리에틸렌글리콜 또는 폴리에틸렌글리콜과 폴리프로필렌글리콜의 공중합체를 결합시켜 항암활성이 향상된 불포화 고급지방산 유도체를 제조하는 방법 및 이로부터 제조된 항암용 불포화 고급지방산 유도체를 제공할 수 있는 매우 뛰어난 효과가 있다. 불포화 고급지방산, CLA, 공액 리놀레산, 폴리에틸렌글리콜, 폴리프로필렌글리콜, 공중합체, 항암
Abstract:
An unsaturated high molecular weight fatty acid derivative, a method for preparing the derivative, and an anticancer composition containing the derivative are provided to improve the anticancer activity remarkably. An unsaturated high molecular weight fatty acid derivative is represented by the formula 1, wherein R is a C18-C22 alkenyl group; n is an integer of 1-400; m is an integer of 0-200; and l is an integer of 0-400. Also the unsaturated high molecular weight fatty acid derivative is represented by the formula 2, wherein R is a C18-C22 alkenyl group; and X, X', X'', X''', Y, Y', Y'' and Y''' are an integer of 1-400.
Abstract:
본 발명은 불포화 고급지방산의 페길화 방법에 관한 것으로, 보다 구체적으로는 용매나 촉매를 쓰지 않는 온도 처리의 간단한 방법으로 불포화 고급지방산을 PEGylation 시킬 수 있고, 페길화 고급지방산에 의해 반응 전 불포화 고급지방산이 갖는 고유한 성질은 유지시키면서 세포에 대한 독성을 줄였으며, 제조된 페길화 고급지방산은 core-shell 특성을 가진 나노입자를 형성함으로써 약물의 방출 조절과 안정성을 높일 수 있으므로 페길화에 의해 안정화되고 반추위 미생물들에 의한 이성화 방지가 가능한 신규한 페길화 고급지방산을 제공할 수 있는 매우 뛰어난 효과가 있다. 불포화 고급지방산, CLA, 공액 리놀레산, 페길화, 지방산, 반추위, 폴리에틸렌글리콜
Abstract:
A novel gene carrier is provided to reduce cytotoxicity and biodegradability, and improve gene deliver efficiency and complex-forming ability with DNA by using biodegradable polyesteramine based on polycaprolactone diacrylate and polyethyleneimine. A method for preparing a novel gene carrier comprises the steps of: independently dissolving polyethyleneimine and polycaprolactone diacrylate in anhydrous methyl alcohol; mixing the dissolved polyethyleneimine and polycaprolactone diacrylate; sealing the mixture with a solvent-resistant cover and reacting them at 40 deg. C for 24 hours; and subjecting the reaction product to dialysis with a membrane of 6,000-8,000 dalton at 4 deg. C for 24 hours. Further, a mol rate of the polycaprolactone diacrylate and the polyethyleneimine is 1:1 to 4.
Abstract translation:提供了一种新的基因载体,通过使用基于聚己内酯二丙烯酸酯和聚乙烯亚胺的可生物降解的聚酯胺,降低细胞毒性和生物降解性,并提高DNA的基因传递效率和复合形成能力。 制备新基因载体的方法包括以下步骤:独立地将聚乙烯亚胺和聚己内酯二丙烯酸酯溶解在无水甲醇中; 混合溶解的聚乙烯亚胺和聚己内酯二丙烯酸酯; 用耐溶剂的盖子密封混合物,并将它们在40℃下反应。 C 24小时; 并用4,000-8,000道尔顿的膜在4℃下对该反应产物进行透析。 C 24小时。 此外,聚己内酯二丙烯酸酯和聚乙烯亚胺的摩尔比为1:1〜4。
Abstract:
본 발명은 생분해성인 폴리에틸렌이민과 폴리에테르의 공중합체를 주요 구성성분으로 하는 유전자 전달체에 관한 것이다. 본 발명의 유전자전달체는, 유전자 전달효율은 높으나 그의 세포독성때문에 실제 적용에 한계점을 갖고 있는 PEI 25K를 대신할 수 있는 우수한 유전자전달체로서 그 역할이 기대되며, 아울러 그의 이러한 생분해성과 낮은 세포독성, 높은 유전자전달효율로 인하여 안전한 유전자 전달체로서 적용 가능성이 매우 높을 것으로 기대된다.
Abstract:
A method for polyethylene glycolylation(PEGylation) of an unsaturated higher fatty acid is provided to avoid the use of a solvent or catalyst while inhibiting undesired isomerization, to obtain a PEGylated higher fatty acid having low cytotoxicity, drug release controllability and stability. A method for PEGylation of an unsaturated higher fatty acid comprises a step of reacting an unsaturated higher fatty acid with polyethylene glycol at 60-200 deg.C for 30 minutes to 10 hours under agitation. The unsaturated higher fatty acid has 16-22 carbon atoms, and examples thereof include alpha-linolenic acid, eicosapentaenoic acid, docosahexaenoic acid, conjugated linoleic acid, linoleic acid, gamma-linolenic acid, arachidonic acid, timnodonic acid, cervonic acid, linolenic acid and oleic acid.
Abstract:
A carrier/DNA complex is provided to promote the apoptosis and suppress an important path of the cell cycle and the angiogenesis by PDCD4, thereby acting as an inhibitor of lung cancer. And an anti-cancer composition comprising the same and a method for delivering the same to cancer cells are provided to be usefully used for preventing and treating lung cancer. In a carrier/DNA complex used for gene therapy of preventing and treating lung cancer, the carrier is UAC(Urocanic Acid modified-Chitosan), the DNA molecule is a nucleic acid coding a protein having the anti-cancer activity and the protein is PDCD4. The pharmaceutical composition for treating lung cancer comprises the complex as an effective ingredient. The method for inhibiting the proliferation of lung cancer cells comprises a step of delivering the complex to the lung cancer cells.
Abstract:
본 발명은 유전자 전달체로서, 이미다졸링을 갖는 우로카닌산으로 수식이 된 키토산 유도체(UAC)에 관한 것이다. 본 발명에 있어서 UAC는 키토산 자체보다 큰 표면 전하값을 가짐으로써 복합체의 입자크기를 작게하는 효과가 있으며, UAC/DNA 복합체는 독성이 없으며, 세포에의 도입효율이 높고, 키토산의 낮은 트렌스팩션 효율을 보완하여 유전자 발현률을 높이며 , 생체 적합성이 우수하다.