摘要:
A convenient method for nucleic acid analysis is provided, which enables 1000 or more types of nucleic acid to be analyzed collectively with high comprehensiveness and with a dynamic range of at least four digits. In particular, provided is a very effective analytical method especially for untranslated RNAs and microRNAs, of which the types of target nucleic acids is 10000 or lower. Nucleic acids can be analyzed conveniently and rapidly with high comprehensiveness and quantitative performance at single-molecule sensitivity and resolution by following the steps of: preparing a group of target nucleic acid fragments one molecule at a time and hybridizing the nucleic acid molecules, which have known base sequences and have been labeled with the fluorescence substances, with the group of the target nucleic acid fragments to detect the fluorescence substances labeling the hybridized nucleic acid molecules.
摘要:
A convenient method for nucleic acid analysis is provided, which enables 1000 or more types of nucleic acid to be analyzed collectively with high comprehensiveness and with a dynamic range of at least four digits. In particular, provided is a very effective analytical method especially for untranslated RNAs and microRNAs, of which the types of target nucleic acids is 10000 or lower. Nucleic acids can be analyzed conveniently and rapidly with high comprehensiveness and quantitative performance at single-molecule sensitivity and resolution by following the steps of: preparing a group of target nucleic acid fragments one molecule at a time and hybridizing the nucleic acid molecules, which have known base sequences and have been labeled with the fluorescence substances, with the group of the target nucleic acid fragments to detect the fluorescence substances labeling the hybridized nucleic acid molecules.
摘要:
In a nucleic acid analysis device which detects a fluorescent dye on a nucleic acid sample immobilized on a surface of a substrate by exciting the fluorescent dye with an evanescent wave, the detection of a fluorescence signal with a high SN ratio is realized even for a long nucleic acid sample.The nucleic acid analysis device according to the invention is a nucleic acid analysis device in which a plurality of regions for immobilizing a nucleic acid sample are provided on a surface of a support base and a single molecule of a nucleic acid sample is immobilized on at least one of the regions, and which performs sequence determination by performing an extension reaction of the immobilized nucleic acid sample, wherein the immobilization of the single molecule of the nucleic acid sample on the support base is performed at two or more points.
摘要:
Disclosed is a technique for binding microparticles to patterned bonding pads of a metal (e.g., gold) formed on a support. The microparticles each carry a nucleic acid synthetase or DNA probe immobilized thereon for capturing a nucleic acid sample fragment. The technique involves forming, on a support surface, a film having a thickness equivalent to that of the bonding pads; controlling the size of microparticles with respect to the size of bonding pads; and thereby immobilizing microparticles each bearing a single nucleic acid sample fragment to the bonding pads in a one-to-one manner in a grid form. This allows high-density regular alignment and immobilization of many types of nucleic acid fragment samples on a support and enables high-throughput analysis of nucleic acid samples. Typically, immobilization of microparticles at 1-micrometer intervals easily provides a high density of 106 nucleic acid fragments per square millimeter.
摘要:
In the conventional nucleic acid analysis devices and nucleic acid analyzers, there was no technique available for sequencing a single nucleic acid molecule easily and highly efficiently. The present invention enabled a highly efficient single molecule immobilization of nucleic acid with good reproductivity in a short time at a low price by providing small metallic bonding pads at predetermined positions on a support substrate, firmly fixing a hydrophobic linker on the bonding pads, and bonding on to the linker bulky microparticles onto which a single molecule of a nucleic acid sample fragment is immobilized. According to the present invention, in the nucleic acid analysis device which uses a nucleic acid analyzer, the nucleotide read length can be extended and many types of nucleic acid molecule to be analyzed can be analyzed at one time.
摘要:
In the conventional nucleic acid analysis devices and nucleic acid analyzers, there was no technique available for sequencing a single nucleic acid molecule easily and highly efficiently. The present invention enabled a highly efficient single molecule immobilization of nucleic acid with good reproductivity in a short time at a low price by providing small metallic bonding pads at predetermined positions on a support substrate, firmly fixing a hydrophobic linker on the bonding pads, and bonding on to the linker bulky microparticles onto which a single molecule of a nucleic acid sample fragment is immobilized. According to the present invention, in the nucleic acid analysis device which uses a nucleic acid analyzer, the nucleotide read length can be extended and many types of nucleic acid molecule to be analyzed can be analyzed at one time.
摘要:
An object of the present invention is to regularly align microparticles, on each of which a nucleic acid synthetase or a DNA probe capable of capturing a nucleic acid sample fragment is immobilized, on a support so as to improve throughput of nucleic acid analysis. The present invention relates to a method comprising immobilizing a nucleic acid synthetase, a DNA probe, or the like in advance to a microparticle, forming a pattern of metal pads each having a diameter smaller than the microparticle diameter with gold or the like on a support, and allowing a microparticle to be bound to the pads via a chemical bond. In addition, when the surfaces of microparticles are electrically charged, a pattern of metal pads each having a diameter equivalent to or larger than the microparticle diameter is formed with gold or the like on a support and a microparticle is allowed to be bound to the pads via a chemical bond. According to the present invention, many types of nucleic acid fragment samples can be regularly aligned at a high density and immobilized on a support. This allows high throughput analysis of nucleic acid samples. For example, if microparticles are immobilized at 1-micron pitches, a high density of 106 nucleic acid fragments/emm2 can be readily achieved.
摘要:
Provided is a reaction device for nucleic acid analysis wherein microparticles, which carry a nucleic acid to be detected having been immobilized thereon, are aligned in a lattice form on a substrate according to the pixel size of a two-dimensional sensor. By this reaction device for nucleic acid analysis which is provided with a channel-forming reaction chamber on the substrate (101), the nucleic acid having been immobilized on the microparticles (103) on the substrate (101) is detected. The microparticles (103), which carry the nucleic acid to be detected having been immobilized thereon, are arranged by microstructures (102) aligned on the substrate (101).
摘要:
A microparticle having a probe molecule able to capture a specific nucleic acid group to be analyzed is used to extract only the specific nucleic acid group to be analyzed from a nucleic acid sample and the microparticle is thereafter directly immobilized on a smooth plate, whereby a device for nucleic acid analysis is rapidly prepared. Immobilizing a single capture probe molecule onto an individual microparticle in advance and forming, at regular positions on the smooth substrate, an adhesion pad on which a functional group that binds to the microparticle has been introduced makes it possible to readily and rapidly prepare the device for nucleic analysis, where the nucleic acid sample to be analyzed is arranged molecule by molecule in a lattice shape on the smooth substrate.
摘要:
A microparticle having a probe molecule able to capture a specific nucleic acid group to be analyzed is used to extract only the specific nucleic acid group to be analyzed from a nucleic acid sample and the microparticle is thereafter directly immobilized on a smooth plate, whereby a device for nucleic acid analysis is rapidly prepared. Immobilizing a single capture probe molecule onto an individual microparticle in advance and forming, at regular positions on the smooth substrate, an adhesion pad on which a functional group that binds to the microparticle has been introduced makes it possible to readily and rapidly prepare the device for nucleic analysis, where the nucleic acid sample to be analyzed is arranged molecule by molecule in a lattice shape on the smooth substrate.