Abstract:
PROBLEM TO BE SOLVED: To provide surface-modified nanoparticles having enhanced dispersibility in an aqueous media, or surface-modified nanoparticles having inner cores comprising a semiconductive or metallic material. SOLUTION: Water-dispersible nanoparticles are prepared by applying a coating of a multiply amphipathic dispersant to the surface of a hydrophobic nanoparticle comprised of a semiconductive or metallic material. The multiply amphipathic dispersant has two or more hydrophobic regions and two or more hydrophilic regions, and is typically polymeric. Preferred polymeric dispersants are comprised of: (1) a hydrophobic backbone with hydrophilic branches; (2) a hydrophilic backbone with hydrophobic branches; or (3) a backbone that may be either hydrophobic or hydrophilic, and substituted with both hydrophilic and hydrophobic branches. Monodisperse populations of water-dispersible nanoparticles are also provided, as are conjugates of the water-dispersible nanoparticles with affinity molecules (for example, peptides, oligonucleotides, and the like). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for extracting nucleic acids and other biomolecules from blood. SOLUTION: The method for extracting nucleic acids from blood comprises a step to bring blood cells (preferably after lysing the cell) into contact with an activated solid phase at a pH and immobilize the nucleic acid, and a step to remove the nucleic acids at a higher pH when the charge is inverted or neutralized. The solid phase may be a glass bead activated by histidine acting as a binder. The bead is flowable by sucking blood through a column containing the bead with air thereby improving contact of the cell and preventing clogging of the column. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide serum-free cell culture media formulations supporting the in vitro cultivation of animal cells. SOLUTION: There are provided serum-free cell culture media formulations supporting the in vitro cultivation of animal cells, wherein the media comprise at least one nutrient of plant derivation, such as at least one plant peptide and/or at least one plant lipid and/or plant fatty acid, further optionally comprise an enzymatic digest or extract of yeast cells. The invention also provides methods of cultivating animal cells in vitro using these cell culture media formulations. In addition, the media can be used for proliferation of animal cells for virus production. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for synthesizing luminescent nanoparticles, and to provide nanoparticles prepared by such a method. SOLUTION: The nanoparticles are prepared by a method comprising the following steps: (a) a step of providing isolated semiconductor cores; (b) a step of mixing the cores with an additive containing (i) a first shell precursor, (ii) a second shell precursor, (iii) a solvent, and (iv) one or more elements selected from the group consisting of Group 2 elements, Group 12 elements, Group 13 elements, Group 14 elements, Group 15 elements, or Group 16 elements, Fe, Nb, Cr, Mn, Co, Cu, and Ni, to form a reaction dispersion; and (c) a step of heating the reaction dispersion at a temperature for inducing the formation of inorganic shells on the semiconductor cores for a sufficient time. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a powder nutrient culture medium, a medium supplement and a medium subgroup formulation. SOLUTION: Provided are cell culture liquid supplements (including powdered serum such as powdered fetal bovine serum (FBS)), medium subgroup formulations and cell culture liquid comprising all of the necessary nutritive factors including lipid components that facilitate the in vitro cultivation of cells. Prokaryotic and eukaryotic cells, particularly bacterial cells, yeast cells, plant cells and animal cells (including human cells) are cultured by using these dry powder nutritive media, media supplements, media subgroups and buffer formulations. Prior to the cultivation, sterile powdered media, media supplements (particularly powdered serum such as powdered FBS, powdered transferrin, powdered insulin, powdered organ extracts (such as bovine brain or pituitary extracts), powdered growth factors (such as EGF, FGF, etc.) and the like), media subgroups and buffer formulations are produced, the products are sterilized by gamma-ray radiation, and the media, supplements, media subgroups and buffer solutions are powdered. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide thermal block assemblies and instruments providing low thermal non-uniformity for rapid thermal cycling.SOLUTION: Various embodiments of a thermal block assembly having low thermal non-uniformity provide for desired performance of bioanalysis instrumentation utilizing such thermal block assemblies. A thermal block assembly for thermal cycling comprises: a sample block having a first surface and a second surface, wherein the first surface is adapted for receiving a sample support device; a heat sink comprising a base having a first surface, a second surface and a plurality fins pendant the second surface, wherein a space between each fin provides for a flow path for air passing from an inlet side of the plurality of fins to an outlet side of the plurality of fins; and a plurality of thermal electric devices positioned between the sample block and heat sink.
Abstract:
PROBLEM TO BE SOLVED: To detect a presence and/or concentration changes of various analyte types in a wide variety of chemical and/or biological processes, and to facilitate DNA sequencing techniques based on monitoring changes in hydrogen ion concentration (pH), or binding events associated with chemical processes relating to DNA synthesis.SOLUTION: ChemFET arrays are fabricated using conventional CMOS processing techniques based on improved FET pixel and increased measurement sensitivity and accuracy. A plurality of template nucleic acids are disposed into a plurality of reaction chambers (wherein the plurality of reaction chambers is incontact with a chemFET array), a new nucleic acid strand is synthesized by incorporating one or more known nucleotide triphosphates sequentially at the 3' end of the sequencing primer, and the incorporation of the one or more known nucleotide triphosphates is detected by a change in current at the at least one chemFET in the array.
Abstract:
PROBLEM TO BE SOLVED: To detect a presence and/or concentration changes of various analyte types in a wide variety of chemical and/or biological processes, and to facilitate DNA sequencing techniques based on monitoring changes in hydrogen ion concentration (pH).SOLUTION: ChemFET arrays are fabricated using conventional CMOS processing techniques based on improved FET pixel and array designs that increase measurement sensitivity and accuracy, and at the same time facilitate significantly small pixel sizes and dense arrays. A plurality of template nucleic acids are disposed into a plurality of reaction chambers (wherein the plurality of reaction chambers is incontact with a chemFET array), a new nucleic acid strand is synthesized by incorporating one or more known nucleotide triphosphates sequentially at the 3' end of the sequencing primer, and the incorporation of the one or more known nucleotide triphosphates is detected by a change in current at the at least one chemFET in the array.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of making cDNA molecules and cDNA libraries. SOLUTION: There are disclosed the method for synthesizing one or more cDNA molecules or a population of cDNA molecules, comprising: a process of mixing at least one mRNA or poly A RNA templates or a population of such templates with at least one polypeptide with reverse transcriptive activity; and a process of incubating the mixture under a condition enough to increase the amount or percentage of synthesized, full-length cDNA molecules, cDNA molecules and cDNA libraries produced according to these methods, vectors and host cells containing such cDNA molecules and libraries, and a kit for making the cDNA molecules and libraries. COPYRIGHT: (C)2011,JPO&INPIT