Abstract: A carrier for cell culture comprising a carrier having a cationic group and polypeptide-modified portions formed on a surface of the carrier in a sea-island structure, and a carrier for cell culture comprising a water-containing gel comprising alginic acid, wherein a surface of the carrier is coated with collagen, and wherein the collagen is bound to a surface of the water-containing gel by means of chitosan.

Abstract: The invention provides a screening method for selecting a particular candidate molecule by using binding amount data between a target molecule and the candidate molecule, the data being obtained by supplying the candidate molecule of study to a measurement region composed of an immobilization membrane on which the target molecule is immobilized, the screening method comprising: obtaining the binding amount data during activity by supplying the candidate molecule to a measurement region in which the target molecule not subjected to activity lowering treatment that lowers physiological activity is immobilized, obtaining the binding amount data during low activity by supplying the candidate molecule to a measurement region in which the target molecule that is subjected to activity lowering treatment that lowers physiological activity is immobilized, and extracting a candidate molecule having a specified difference between the binding amount data during the activity and the binding amount data during the low acti

Abstract: An object of the present invention is to provide a biosensor having high capability for suppressing nonspecific protein adsorption and high capability for extracting a target protein. The present invention provides a biosensor which comprises a flow channel that is formed on a substrate and is composed of a detection plane for detecting interaction between a physiologically active substance and a test substance and a non-detection plane where said interaction is not detected, wherein the substrate is a metal surface or a metal film and the surfaces of the detection plane and the non-detection plane are modified with a self-assembled monolayer (SAM) having a hydroxy group and a functional group for binding with a physiologically active substance.

Abstract: It is an object of the present invention to provide a biosensor with an improved recovery yield of a test substance interacting with a physiologically active substance. The present invention provides a biosensor having a flow channel formed on a substrate, which is composed of a detection surface for detecting the interaction of a physiologically active substance with a test substance and a non-detection surface that does not detect said interaction, wherein the detection surface and non-detection surface are modified in such a way that the physiologically active substance can be immobilized thereon.

Abstract: It is an object of the present invention to provide a substrate for sensors and a container, wherein the adhesiveness of the substrate to a thin film is improved, a physiologically active substance can be immobilized without the peeling of the thin film from a plastic substrate, and non-specific adsorption during the analysis of interaction among biomolecules is small. The present invention provides a substrate for sensors, which has a thin film layer on a plastic substrate, wherein the plastic substrate has been treated with an organic primer before formation of the thin film.

Abstract: It is an object of the present invention to provide a measurement method which can suppress noise when a specific binding reaction between a physiologically active substance and a test substance is measured using a surface plasmon resonance measurement device.

Abstract: It is an object of the present invention to provide a method for obtaining a chromatogram using the SPR analysis method.

Abstract: A method for detaching a carrier for cell culture from cultured cells formed on a surface of said carrier, which includes the step of bringing the carrier for cell culture into contact with a compound represented by the following formula (I) or a polyphosphoric acid or a salt thereof: MO3P-L11-PO3M wherein L11 represents a divalent bridging group; and M represents a hydrogen atom or a cation. The carrier preferably includes a calcium alginate layer and a cell adhesion gel layer.

Abstract: A carrier for cell culture comprising an alginic acid gel layer laminated with a gel layer containing a cell adhesion substance, wherein the gel layer containing a cell adhesion substance has a dry thickness of less than 0.3 ?m. The carrier for cell culture enables reproducible and convenient cell layer lamination without inhibiting growth and proliferation of cells upon solubilization of the carrier for preparation of a cell sheet.

Abstract: It is an object of the present invention to provide a method for producing a solid substrate used for sensors having a film with a small film thickness distribution, and a solid surface used for sensors having a film with a small film thickness distribution. The present invention provides a method for spin coating wherein the substrate is rotated in a state where the substrate surface to be coated is inclined against the rotation surface during coating.

Abstract: A carrier for cell culture comprising a water-containing polymer gel containing chitosan, wherein the water-containing polymer gel is coated with collagen and/or alginic acid, and a carrier for cell culture, which comprises a gel layer containing chitosan and an inorganic layer adjacently provided to the gel layer.

Abstract: In a compound-extraction system: a storage unit stores first data sets each indicating interactions between one of bioactive polymers for reference and predetermined compounds under consideration, in association with the bioactive polymers for reference and the predetermined compounds under consideration; and an extraction unit receives a second data set indicating interactions between a bioactive polymer of interest and the predetermined compounds under consideration, and at least one of the first data sets indicating interactions between at least one of the bioactive polymers for reference and the predetermined compounds under consideration, and extracts at least one of the predetermined compounds under consideration which interacts with the bioactive polymer of interest differently than with the predetermined compounds under consideration.

Abstract: It is an object of the present invention to provide a method for analyzing the interaction of a test substance with a ligand by analyzing a phenomenon whereby multiple test substances are simultaneously adsorbed to a ligand. The present invention provides a method for analyzing the interaction of test substances with a ligand by measuring the change in the surface plasmon resonance using a surface plasmon resonance measurement device wherein the above-described method comprises: supplying a solution containing two or more types of test substances after supplying a solution containing no test substances; measuring the change in the surface plasmon resonance; and analyzing the difference between the change in the surface plasmon resonance that is predicted from the adsorption rate constant (ka) and dissociation rate constant (kd) of each of the test substances that had previously been measured and the change in the surface plasmon resonance that has actually been measured.

Abstract: An object of the present invention is to suppress variations in measurement values when measuring a specific binding reaction between a physiologically active substance and a tested substance using a surface plasmon resonance measurement device, so that binding detection data with high reliability is obtained. The present invention provides a method for measuring a change in surface plasmon resonance, which comprises: using a surface plasmon resonance measurement device comprising a flow channel system having a cell formed on a metal film and a light-detecting means for detecting the state of surface plasmon resonance by measuring the intensity of a light beam totally reflected on the metal film; and exchanging the liquid contained in the above flow channel system, wherein a major axis of the metal film is 0.

Abstract: It is an object of the present invention to provide a solid substrate used for sensors that suppresses nonspecific adsorption and that is able to immobilize a physiologically active substance. The present invention provides A solid substrate used for sensors, wherein two or more different hydrophobic polymer layers are laminated on the solid substrate, and among the above hydrophobic polymer layers, the surface of a layer, which is farthest from the solid substrate, is modified.