Patent application number | Description | Published |
20090022765 | COSMETIC PIGMENT COMPOSITION CONTAINING GOLD OR SILVER NANO-PARTICLES - The present invention relates to a cosmetic pigment composition exhibiting colors in the visible region, which comprises an effective amount of nanoparticles or a mixture of two or more nanoparticles selected from the group consisting of (a) gold nanoparticles exhibiting red color; (b) silver nanoparticles exhibiting yellow color; (c) gold-silver alloy nanoparticles exhibiting flame color; and (d) gold nanoparticles exhibiting blue color, and a color cosmetic composition and a color lotion comprising the pigment composition. According to the present invention, it is possible to prepare pigments exhibiting various colors in the visible region using gold or silver nanoparticles, and a cosmetic pigment composition which can exhibit various colors by mixing the pigments in various compositional ratios, in which precipitation or agglomeration of particles does not occur, and whose color can be maintained for a long time. Also, since the pigment of the present invention is not harmful to the human body unlike conventional metal pigments, and contains gold or silver that is beneficial to health, the pigment can be used in various applications as functional raw materials. | 01-22-2009 |
20090215156 | Method for Fabricating Nanogap and Nanogap Sensor - The present invention relates to a method of fabricating a nanogap and a nanogap sensor, and to a nanogap and a nanogap sensor fabricated using the method. The present invention relates to a method of fabricating a nanogap and a nanogap sensor, which can be realized by an anisotropic etching using a semiconductor manufacturing process. According to the method of present invention, the nanogap and nanogap sensor can be simply and cheaply produced in large quantities. | 08-27-2009 |
20090318376 | High Throughput Screening Method of Binding Inhibitor Between caspase3 and XIAP and Binding Inhibitor Screened Thereby - The present invention relates to a high throughput screening method of a binding inhibitor between caspase3 and xIAP and chromomycin screened using the same, and more specifically, the present invention provides a method for screening anticancer substance, the method comprising the steps of reacting caspase3 or xIAP and candidate inhibitors of the binding between caspase3 and xIAP on a biochip for detecting caspase3:xIAP interaction, and selecting a candidate substance inhibiting the binding of caspase3 to xIAP as an anticancer substance, and an anticancer agent inhibiting caspase3:xIAP binding, which is screened by the above method. According to present invention, it is possible to develop a target-oriented anticancer agent focused on xIAP and caspase3, apoptosis-related proteins and thus it can be applied to tailored medication and combination therapy. Moreover, glycoside antibiotic chromomycin, screened by the present invention has inhibitory activity of the binding between xIAP and caspase3 involved in apoptosis, so that it can be used as a therapeutic agent for myelogenous leukemia and solid tumors. | 12-24-2009 |
20100040693 | SILICA CAPSULES HAVING NANO-HOLES OR NANO-PORES ON THEIR SURFACES AND METHOD FOR PREPARING THE SAME - The present invention relates to silica capsules having nano-holes or nano-pores on the surface thereof, and preparation methods thereof. More specifically, relates to silica capsules having holes with a size ranging from a few nanometers (nm) to a few hundreds of nanometers (nm), on the surface thereof, multifunctional silica capsules containing magnetic nanoparticles and optical nanoparticles, and preparation methods thereof. According to the present invention, the silica capsules having holes on the surface thereof can be prepared by making an emulsion system using two fluids having different surface tensions, and selectively evaporating only one fluid of the two fluids during a process of forming a silica layer. In addition, the multifunctional silica capsules containing magnetic nanoparticles and optical nanoparticles can be prepared by loading various multifunctional nanoparticles into the two fluids. | 02-18-2010 |
20100173430 | CYSTEINE-TAGGED STAPHYLOCOCCAL PROTEIN G VARIANT - The present invention relates to an N-terminal cysteine-tagged Streptococcal protein G variant. Since the variant binds in a directional manner to a surface of a biochip or a biosensor, the variant provides a biochip and a biosensor having an improved antibody-immobilizing capability, compared with an untagged protein G variant. | 07-08-2010 |
20100203653 | Protein G-Oligonucleotide Conjugate - The present invention relates to a protein G conjugate, which is prepared by linking an N-terminal cysteine-tagged protein G variant with an oligonucleotide via a linker. The conjugate binds in a directional manner on the surface of a biochip and biosensor, thereby providing a biochip and biosensor having improved antibody immobilization ability. | 08-12-2010 |
20100204444 | MULTIFUNCTIONAL PROTEIN SIMULTANEOUSLY DELIVERING ANTIBODIES AND NANOPARTICLES - The present invention relates to a polypeptide structure which can simultaneously deliver an antibody and a nanoparticle into cells, more specifically, to a polypeptide structure for intracellular delivery of an antibody and a nanoparticle, which comprises a nanoparticle-binding region, an antibody-binding region and a signaling capable of delivering substances into cells. | 08-12-2010 |
20100228237 | GOLD NANOCAGES CONTAINING MAGNETIC NANOPARTICLES - The present invention relates to gold nanocages containing magnetic nanoparticles and a preparation method thereof. More specifically, relates to hollow-type gold nanocage particles, which contain iron oxide nanoparticles having a magnetic property and have an optical property of strongly absorbing or scattering light in the near-infrared (NIR) region, as well as a preparation method thereof. Due to their optical property and magnetic property, the magnetic nanoparticle-containing gold nanocages can be used in various applications, including analysis in a turbid medium with light, cancer therapy or biomolecular manipulation using light, contrast agents for magnetic resonance imaging, magnetic hyperthermia treatment and drug delivery guide, etc. | 09-09-2010 |
20100231914 | SURFACE PLASMON RESONANCE SENSOR USING ROTATING MIRROR - Disclosed is a surface plasmon resonance sensor having a rotating mirror, including (a) an incident light source unit for oscillating a laser as incident light; (b) a polarizer for polarizing the incident light; (c) a rotating mirror having cylindrical or planar shapes for reflecting the polarized incident light to radiate disk-shaped light; (d) a light shielding film for allowing part of the disk-shaped light to pass therethrough and located adjacent to the central axis of the rotating mirror; (e) a cylinder lens for focusing the light passed through the light shielding film thereon; (f) a metal thin film for receiving the light focused on the cylinder lens to generate surface plasmon resonance; (g) a dielectric medium provided under the metal thin film; and (h) a detector for detecting the light reflected from the metal thin film. This surface plasmon resonance sensor can solve conventional interference problems of a laser being used as a light source to obtain an image for measurement of angle and two-dimensional reflected light intensity, including the deterioration of the quality of the image and the variation in the intensity of light source depending on the position of incidence. | 09-16-2010 |
20100233094 | PERFLUOROCARBON NANO-EMULSION CONTAINING QUANTUM DOT NANOPARTICLES AND METHOD FOR PREPARING THE SAME - The present invention relates to a perfluorocarbon nanoemulsion containing quantum dot nanoparticles and a method for preparing the same, more specifically, relates to a method for preparing a multifunctional perfluorocarbon nanoemulsion which simultaneously shows the fluorine-based magnetic resonance properties of perfluorocarbon and the optical properties of quantum dot nanoparticles, the method comprising dispersing quantum dot nanoparticles, modified with a fluorine end group, in perfluorocarbon, and then adding an aqueous emulsifier solution containing lipid to the dispersion. The disclosed perfluorocarbon nanoemulsion containing quantum dot nanoparticles has excellent biocompatibility and simultaneously shows optical properties and magnetic resonance properties, and thus can be used as a contrast agent for multi-mode molecular imaging. Accordingly, the nanoemulsion can be used to study cell and small-animal molecular imaging in various fields, including biological and medical fields. | 09-16-2010 |
20110020225 | POROUS POLYMER PARTICLES IMMOBILIZED WITH CHARGED MOLECULES AND METHOD FOR PREPARING THE SAME - The present invention relates to porous polymer particles containing a charged molecule immobilized therein and a method for preparing the same. According to the disclosed invention, porous particles can be prepared using a biocompatible polymer and, at the same time, a charged molecule can be immobilized in the pores of the porous particles, such that various charged molecules can be loaded in the porous particles. In addition, various kinds of drugs or functional materials can be loaded into the porous particles of the present invention by electrostatic attraction and absorption or adsorption by a capillary phenomenon occurring due to porous properties. | 01-27-2011 |
20110098197 | Method for Specific Covalent Coupling of Antibody Using a Photoactivable Protein G Variant - The present invention relates to a protein G variant comprising a mutated Fc binding domain, which is prepared by substituting cysteine for specific residues of the Fc-binding domain of protein G, and a method for preparing the same. Further, the present invention relates to a protein G variant comprising a cysteine mutated Fc binding domain that is site-selectively modified with a UV cross-linker. Further, the present invention relates to a method for UV cross-linking the protein G variant with antibody. The present invention relates to a protein G variant-antibody conjugate that is prepared by the above method. Further, the present invention provides a method for screening or analyzing antigens using the conjugate. Furthermore, the present invention provides a biochip or biosensor fabricated by linking the protein G variant to the surface of a solid support, and a method for fabricating the same. In addition, the present invention provides a method for immobilizing antibodies and analyzing antigens using the biochip or biosensor. | 04-28-2011 |
20110110867 | MULTIMODAL IMAGING METHOD USING NANO-EMULSION COMPRISING OPTICAL NANO-PARTICLES AND PERFLUOROCARBONS - The present invention relates to a multimodal imaging method using a nano-emulsion comprising optical nano-particles and perfluorocarbons, and more particularly, to a method of obtaining multimodal images using a nano-emulsion consisted of perfluorocarbons for multispectral magnetic resonance imaging (MRI) and nano-particles for multicolor fluorescent detection. In the multimodal imaging method, various multispectral MRI images and multicolor fluorescent rays can be obtained by varying the kind and combination of perfluorocarbons and the kind and combination of optical nano-particles, so that multiplexed analysis is possible. Accordingly, the multimodal imaging method can be applied to various fields, including biological and medical fields in which studies on cell molecular imaging has been conducted. | 05-12-2011 |
20110171097 | FULLERENE-SILICA NANOPARTICLES WITH IMPROVED FLUORESCENCE, PREPARATION METHOD THEREOF AND USE THEREOF - The present invention relates to fullerene-silica nanoparticles with improved fluorescence, a preparation method of the fullerene-silica nanoparticles, and use thereof. More specifically, the present invention relates to fullerene-silica nanoparticles with improved fluorescence in which fullerene and silica are covalently linked, a preparation method of the fullerene-silica nanoparticles, and use thereof. The preparation method of the fullerene-silica nanoparticles comprises the steps of: adding a surfactant to a non-polar organic solvent and a polar solvent and stirring them to form reverse micelles (step 1); adding fullerene to the reverse micelles formed in the step 1 and stirring them (step 2); and adding a silica precursor and a catalyst to a reaction solution containing the fullerene prepared in the step 2 and stirring them to prepare fullerene-silica nanoparticles (step 3). According to the present invention, fullerene-silica nanoparticles in the form of a uniform spherical shape of tens of nanometers can be prepared. As such prepared fullerene-silica nanoparticles have a large surface area due to a nanometer-sized structure, they have good reactivity. Compared with heavy metals or metal nanoparticles, the fullerene-silica nanoparticles, because of using silica, are harmless to a living body. Further, as the fullerene-silica nanoparticles exhibit strong fluorescence, they can be used as a contrast agent for in-vivo imaging or as a drug delivery carrier. | 07-14-2011 |
20110171269 | METHOD FOR MANUFACTURING UNIFORM SIZE POLYMERIC NANOPARTICLES CONTAINING POORLY SOLUBLE DRUGS - The present invention relates to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, and more particularly, to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, including a first step of dissolving a biodegradable polymer in a non-volatile polar organic solvent, a second step of adding poorly soluble drugs to water and the biodegradable polymer solution to produce a dispersion, and a third step of adding the dispersion to emulsifier solutions in a batch under the condition of low mechanical energy level stirring. The polymeric nanoparticles of the present invention is capable of manufacturing nano-sized small and uniform polymeric nanoparticles through a simple method of employing a non-volatile polar solvent, especially a solvent having a polarity similar to that of water, as a solvent for a mixture solution of biodegradable polymer and poorly soluble materials, and using a low mechanical energy condition and batch-adding of dispersion in an emulsifying process. The polymeric nanoparticles of the present invention are advantageous in that the dissolution rate of the poorly soluble drugs contained in polymeric particles is dramatically improved, and the poorly soluble drugs are gradually and steadily released and maintained at a constant density over a long period of time. | 07-14-2011 |
20110201027 | BIOSENSOR FOR DETECTING A TRACE AMOUNT OF SAMPLE AND PRODUCTION METHOD THEREFOR - The present invention relates to a biosensor capable of a trace amount of sample and a fabrication method thereof. More specifically, the invention relates to a method for fabricating a biosensor, the method comprising: immobilizing a receptor molecule, which binds selectively to a target substance, on an electrically insulated nano-electrode chip; binding an enzyme to the receptor molecule; and treating the bound enzyme with metal ions and depositing the metal ions on the nano-electrode surface, and to a biosensor fabricated thereby. According to the invention, a precipitate is produced on the nano-electrode surface by a precipitation between the enzyme and the metal ions, and the produced precipitate electrically connects the nano-electrodes together, thereby increasing electrical conductivity. Thus, the invention is useful for quantitative analysis of trace amounts and/or various concentrations of target substances. | 08-18-2011 |
20110212032 | POLYMER PARTICLES FOR NIR/MR BIMODAL MOLECULAR IMAGING AND METHOD FOR PREPARING THE SAME - The present invention relates to polymer particles showing magnetic properties and fluorescent properties simultaneously and a preparation method thereof More specifically, relates to polymer particles for near infrared (NIR)/magnetic resonance (MR) bimodal molecular imaging, contain a magnetic nanomaterial and an NIR fluorescent material, and a preparation method thereof The disclosed polymer particles show magnetic properties and fluorescent properties simultaneously, and thus are useful as contrast agents for NIR/MR bimodal molecular imaging. | 09-01-2011 |
20120041178 | Coenzyme Q10 Nanoparticles, Preparation Method Thereof and Composition Containing Said Nanoparticles - Provided are a coenzyme Q10 nanoparticle, a method of preparing the same and a composition having the nanoparticle. According to the present invention, Coenzyme Q10 may be dissolved in only a water-miscible organic solvent, and easily made into a nano-sized particle and solubilized under a low energy condition, for example, by simple stirring. The coenzyme Q10 may be dispersion-stabilized by an amino acid or protein. The coenzyme Q10 is formed in a nano-sized particle and solubilized, an absorption rate may be increased and simultaneously deliver the amino acid and protein with the nanoparticle. Thus, the coenzyme Q10 nanoparticle can be effectively used in food, cosmetics and medicine. | 02-16-2012 |
20120059326 | Microneedle Unit Capable of Controlling Fluid Delivery - Provided is a microneedle unit comprising a case having a space accommodating a fluid and a fluid channel through which the fluid is discharged, a microneedle coupled to a lower portion of the case, a base cover disposed at the lower portion of the case, having a hole through which the microneedle passes, and being vertically movable, a guide pin coupled to the base cover and configured to open and close the fluid channel, and an elastic member configured to impart a restoring force such that the base cover is moved upward by an external pressure and then returns downward again. Therefore, the microneedle unit, which is provided to deliver a fluid into the skin with no pain and no scar, can control injection of the fluid using the guide pin, and repeatedly and conveniently control injection of the fluid using the elastic member. | 03-08-2012 |
20120088261 | CELL LABELING AND IMAGING USING MULTIFUNCTIONAL PERFLUOROCARBON NANOEMULSION - The present invention relates to cell labeling and imaging using a multifunctional perfluorocarbon (PFC) nanoemulsion. In particular, the perfluorocarbon nanoemulsion containing optical nanoparticle is provided with both optical characteristics and | 04-12-2012 |
20120202703 | METHOD FOR DETECTING AND QUANTIFYING A TARGET SUBSTANCE USING A BIOCHIP - The present invention relates to a method for detecting and quantifying a target substance using a biochip having a substrate onto which probe molecules are fixed, and more particularly, to a method for detecting and quantifying a target substance with the naked eye by using a biochip, comprising the steps of preparing a biochip having a substrate onto which probe molecules are fixed, contacting the biochip with a sample containing a target substance having electric charges, reacting the target substance with nanoparticles having electric charges that are opposite to those of the target substance, and then reacting with a metal enhancing solution so as to amplify the size of the nanoparticles. | 08-09-2012 |
20120220734 | Reversible Fluorescence Photoswitch based on Dye-Crosslinked Dendritic Nanoclusters for High-Contrast Imaging of Living Biological Systems - The present invention relates to a reversible fluorescence photoswitch based on the dye-crosslinked dendritic nanoclusters for high-contrast imaging of living biological systems. The dendritic nanocluster according to the present invention consists of two or more dendrimers crosslinked each other to have a globular shape overall, and thereby enhancing the fluorescence intensity and improving the detection sensitivity of the monomeric dendrimers. In addition, the dendritic nanocluster according to the present invention was found to internalize into a living zebrafish by both skin permeation and microinjection, independently. Further, the dendritic nanocluster according to the present invention showed low toxicity and thus it could be useful for both in vivo and in vitro imaging as well as the ex vivo cell tracking applications. | 08-30-2012 |
20130004596 | PHARMACEUTICAL COMPOSITION FOR TREATING DIABETES CONTAINING QUAMOCLIT ANGULATA EXTRACT - The present invention relates to a pharmaceutical composition for treating diabetes and its complications, containing a | 01-03-2013 |
20130102812 | WATER-SOLUBLE FLUORESCENT FULLERENE DERIVATIVE, AND PREPARATION METHOD THEREOF - The present invention relates to a water-soluble fluorescent fullerene derivative and a preparation method thereof, and more particularly to a method of preparing a fullerene derivative having excellent fluorescence in a simple manner by mixing fullerene and a ligand containing a terminal hydroxyl group in a first solvent and reacting the mixture in the presence of a catalyst, and to a water-soluble fluorescent fullerene derivative prepared by the method. | 04-25-2013 |
20130149374 | Asymmetric Liposomes for the Highly Efficient Encapsulation of Nucleic Acids and Hydrophilic Anionic Compounds, and Method for Preparing Same - The present invention relates to asymmetric liposomes for high encapsulation efficiency of nucleic acids and hydrophilic anionic compounds, and to a method for preparing same, and specifically, to asymmetric liposomes consisting of a cationic lipid having a small head group as an internal lipid and a neutral or PEGylated lipid having a big head group as an external lipid, wherein nucleic acids and/or anionic compounds are encapsulated in the internal lipid. According to the present invention, asymmetric liposomes, in which nucleic acids and hydrophilic anionic compounds are encapsulated with high efficiency, may be prepared, and thus the same may be used for various purposes, such as gene therapy, and the delivery of hydrophilic anionic drugs which are difficult to prepare as prodrugs, and drug delivery, imaging, etc. can be carried out by encapsulating a fluorescent contrast agent in the liposome. | 06-13-2013 |
20140179622 | NOVEL COMPOUND ISOLATED FROM QUAMOCLIT, AND COMPOSITION FOR PREVENTING OR TREATING DIABETES CONTAINING THE COMPOUND AS AN ACTIVE INGREDIENT - The present invention relates to a novel compound isolated from | 06-26-2014 |
20140295567 | METHOD FOR DETECTING NUCLEIC ACID USING INTERCALATOR-CONJUGATED METAL NANOPARTICLES - The present invention relates to a method for detecting nucleic acid using intercalator-conjugated metal nanoparticles. More particularly, the present invention relates to a method which involves applying a sample containing a target nucleic acid to a DNA chip having a substrate with a DNA probe fixed thereon, reacting metal nanoparticles in which intercalators coupled with a double helix nucleic acid are conjugated, and reacting a metal enhancing solution to thereby amplify the sizes of the metal nanoparticles and detect the target nucleic acid using the unaided eye. The method for detecting nucleic acid according to the present invention uses intercalator-conjugated metal nanoparticles, and thus enables detection of nucleic acid using the unaided eye without any other equipment. Therefore, compared with conventional detection methods, the present invention exhibits the effects of reducing analysis costs and the time needed for detection, and enables miniaturization of the size of an apparatus, thereby enabling field diagnosis in a livestock farm, home, or the like. | 10-02-2014 |