Abstract:
본 발명은 조영제 조성물 및 이를 이용한 바이오 영상화 방법에 관한 것이다. 본 발명의 조영제 조성물은 생분자인 DNA 나노 구조체를 주요 성분으로 포함하기 때문에, 본질적으로 비세포독성 및 비면역성이며, 다른 유기 또는 무기 기반 조영제 조성물에서 관찰될 수 있는 안전성 문제를 야기할 가능성이 낮다. 또한, 본 발명의 조영제 조성물은 우수한 세포 내 섭취 및 안정성을 나타내어 충분한 조영 증강 효과를 통해 질병의 진단을 용이하게 할 뿐만 아니라, 기존에 탐색이 어려웠던 감시림프절까지 영상화할 수 있기 때문에, 암의 전이 여부를 용이하게 판단하고, 저침습적 치료의 임상 적용을 가능하게 한다.
Abstract:
The present invention relates to a contrast medium composition and a method of bio imagination using the same. The contrast medium composition of the present invention includes DNA nanostructure, which is a biomolecule, as an active ingredient; is fundamentally non-cytotoxic and non-immunogenic; and is not likely to induce safety problems that may be observed in other organic or inorganic contrast medium composition. In addition, the contrast medium composition of the present invention not only facilitates diagnosis of disease through sufficient contrast enhancement effect by showing excellent cellular uptake and intracellular stability but can visualize even SLNs which is difficult to be visualized traditionally, thus enabling easy examination of cancer metastasis and application of lower invasive treatment.
Abstract:
The present invention relates to a Gd-PEI nanogel and a contrast agent or a pharmaceutical composition comprising the same. The Gd-PEI nanogel has an amorphous shape and a flexible nature, and thus passes through an RES system. The Gd-PEI nanogel expresses minimum cytotoxin and enables excellent targeting of in-vivo tumor, thereby ensuring high biomedical potential power as the contrast agent and a drug carrier.
Abstract:
A method for fabricating copper nanoparticles having oxidation resistance and copper nanoparticles having oxidation resistance which comprises: a solution manufacturing step which manufactures a first stirring solution by preparing a first solution including solvents, polymers, and organic acids and stirring the first solution; a reaction step which manufactures a second reaction solution by mixing the first stirring solution, copper precursors, and a first reducing agent; a manufacturing step which manufactures a third reaction solution by mixing the second reaction solution with a second reducing agent; and a collection step which isolates and collects the copper nanoparticles included in the third reaction solution. Therefore, the method for fabricating copper nanoparticles can manufacture copper nanoparticles at room temperature in air atmosphere with a simple process and facilitate mass production of the copper nanoparticles using an environmentally-friendly method which applies aqueous solvents as first. Especially, the copper nanoparticles according to the present invention have enhanced oxidation resistance so that the copper nanoparticles can be stored for 3 months at room temperatures in the air without being oxidized.
Abstract:
Self-assembled nanoparticles of monosaccharide/ethylene oxide alternating polyamides according to the present invention are represented by the chemical formula 1 or the chemical formula 2. In the chemical formula 1 and the chemical formula 2, A, B and n are defined in the specification of the present invention. The polyamides can form water-dispersed and self-assembled nanoparticles, and can be used as a contrast medium for probing the images of cancer cells because the polyamides can be self-assembled using hydrogen bonds.
Abstract:
The present invention relates to a polymer electrolyte membrane-electrode assembly with an enhanced hydrophobicity by maximizing the surface area by forming a nanopattern with a high aspect ratio on the catalytic carrier on the surface of a catalyst layer in order to supply ultra hydrophobicity to the surface of the catalyst layer, and by coating a hydrophobic thin film on the surface, and a manufacturing method thereof. The present invention provides a manufacturing method of a polymer electrolyte membrane-electrode assembly, which comprises a step of forming a nanopattern with a high aspect ratio by plasma-etching the catalyst carrier on the surface of a catalyst layer forming MEA; and a step of forming a hydrophobic thin film on the nanopattern formed on the catalyst carrier. [Reference numerals] (AA) Ultra hydrophobicity surface treatment (plasma etching + hydrophobic thin film coating); (BB) Catalyst layer; (CC,GG) Catalyst carrier; (DD) Catalyst; (EE,HH) Polymer electrolyte membrane; (FF) Hydrophobic thin film