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PHOSPHATIDYLINOSITOL QUANTIFICATION METHOD AND QUANTIFICATION KIT

外国特許コード F190009758
整理番号 (S2017-0751-N0),S2019-0091-N0
掲載日 2019年5月7日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP020027
国際公開番号 WO 2018216776
国際出願日 平成30年5月24日(2018.5.24)
国際公開日 平成30年11月29日(2018.11.29)
優先権データ
  • 特願2017-103714 (2017.5.25) JP
発明の名称 (英語) PHOSPHATIDYLINOSITOL QUANTIFICATION METHOD AND QUANTIFICATION KIT
発明の概要(英語) Disclosed is a method for quantifying the phosphatidylinositol in a sample, wherein the method has the following step: (1) a step for causing the action of phospholipase D and inositol dehydrogenase on the sample. Also disclosed is a phosphatidylinositol quantification kit that contains phospholipase D and inositol dehydrogenase.
従来技術、競合技術の概要(英語) BACKGROUND ART
Phosphatidylinositol(PI) is a kind of phospholipids, fatty acids and glycerol backbone of the inositol phosphate and 2 coupled to a structure. PI is, in mammalian cells in a cell plasma membrane, endoplasmic reticulum and Golgi in a cell containing a film and film is present, in a cell occupy 5-10% of the phospholipid. PI is, in addition to the role of the structure forming the cell membrane, various membrane protein (channel, a transporter, receptor, enzyme or the like) of the activity and adjust the localization, an extremely important role in signal transduction in the cell and is, in recent years has been and increasingly apparent.
Conventional, the quantification of the PI, thin layer chromatography (TLC) /phosphorus has been carried out by the quantification method, the quantitative accuracy and detection sensitivity is low, much time and labor is required. In order to accurately quantify, various coloring method the beam spot on TLC obtained by carefully scraping with a spatula, and the like must be performed for a predetermined amount of phosphorus, and requires skilled techniques.
High performance liquid chromatography (HPLC) was quantified by using the PI, the double bond in the molecule in the acyl chains for detecting the ultraviolet absorber, strongly affected by the kind of the fatty acid chain. That is, the PI, only chain saturated fatty acids with a molecular species is not detected, a polyvalent unsaturated acyl chains in the molecular species having the peak is increased, leads to a consistent amount of liquid.
(MS) mass spectrometry is, PI of the kinds of the fatty acid chains and therefore for each molecular species, as PI is difficult to quantify. For example, a mammalian cell with respect to the PI, two acyl chains 50 by a combination of one or more molecular species is present, each having a different ionization mass analysis are detected as a peak.
PI is a wide variety of important functions of the body cannot be an essential component, the study has been made in the world is very even though, the current methods of analysis also results in very poor PI. Therefore, the blood in the PI associated with the disease and the role and not at all known.
The present inventors have, to this series of phospholipids (phosphatidylcholine, phosphatidylethanolamine, phosphatidic acid, phosphatidyl serine, sphingomyelin, and cardiolipin) and quantified to develop the enzyme (such as Patent Document 1, 2, 3).
In Patent Document 1, phospholipase D, L- amino acid oxidase and peroxidase or not a sample, measuring the fluorescence intensity of the compound that generated by the enzyme assay Dimyristoyl have been reported.
In addition, in Patent Document 2, sphingomyelinase, alkaline phosphatase, peroxidase and choline or not a sample, measuring the fluorescence intensity of the compound that generated by the quantification method of the sphingomyelin enzyme have been reported.
Further, in Patent Document 3, phospholipase D, glycerol, glycerol phosphate oxidase and peroxidase-3-acts on the sample, thereby generating the fluorescence intensity of the quantified by measuring the enzyme cardiolipin have been reported.
However, for the quantified PI of the enzyme has not been developed, by falling through the PI, the overall profile of the phospholipid is not know what problem.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCE
  • 発明者(英語)
  • MORITA, Shin-ya
国際特許分類(IPC)

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