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MATURE OVUM MARKER FOR USE IN IN VITRO FERTILIZATION, AND USE THEREOF 新技術説明会

外国特許コード F130007716
掲載日 2013年11月28日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2012JP074486
国際公開番号 WO 2013099376
国際出願日 平成24年9月25日(2012.9.25)
国際公開日 平成25年7月4日(2013.7.4)
優先権データ
  • 特願2011-284430 (2011.12.26) JP
発明の名称 (英語) MATURE OVUM MARKER FOR USE IN IN VITRO FERTILIZATION, AND USE THEREOF 新技術説明会
発明の概要(英語) A test method for predicting whether or not pregnancy can be established when an ovum collected from a subject is used in in vitro fertilization, characterized in that the concentration of CNP in a follicular fluid collected together with the ovum upon the collection of the ovum is measured; and an ovum test kit suitable for in vitro fertilization, involving an anti-CNP antibody.
従来技術、競合技術の概要(英語) BACKGROUND ART
The in-vitro fertilization, has a problem in the fallopian tubes as a treatment for infertility at the beginning of the target person, then it has been widely applied. At present, in Japan is 21 million people in the in-vitro fertilization exceeds a birth, 2008 years of birth of a person by person 50 1 children born in vitro fertilization have been reported by the Society. Women with an increase in late marriage, in the future considered to further increase the ratio. Is performed in the present method, after fertilization, cell division and progresses to a certain culture (8 - cell stage by the time a), for making back to the uterus fertilized eggs. Can be collected at the time of approximately about this may be a large number of ova, edited by Japan Society in the registration of the obstetrics gynecology, back to the uterus in view of preventing the younger the number of fertilized eggs 1 are restricted in principle.
In-vitro fertilization success of one of the keys 1, a good quality of how much the obtained either from the fact that the mature egg. A good quality of the mature ovum in advance is determined and then returned to the uterus fertilized if, in-vitro fertilization success rate is increased, the burden on the patient can be reduced. However at present, the embryos were transplanted into the uterus, from the appearance of the geometry and the like based on the experience of the surgeons has been selected, which could lead to the satisfaction of the pregnancy advance to high embryo there was no clearly distinguished.
The natriuretic peptides, having the step-down the diuretic effect discovered as a natural bioactive peptide in a family of peptide hormones. Up to now, ANP, BNP and CNP are referred to as type 3 in the presence of homology to known. ANP and BNP are already, acute heart failure and heart failure are widely used for diagnostic and clinical applications.
With respect to the CNP, human, pig, expressed in the brain in a rat has been reported, mainly in the central nervous system has been thought to function (non-patent documents 1 and 2). Recently, CNP is within the central nervous system, reproductive organs, and vascular endothelial in the bone is expressed in currently known (Non-Patent Document 3). However, many physiological function that is unknown, the medical applications is not in progress.
Recently, in the follicles of the mouse, the granulosa cell CNP gene, its receptor gene expression and cumulus cells respectively, in a concentration-dependent manner in vitro CNP is surrounded by the cumulus cells inhibit the maturation of oocytes, on the other hand, of the receptor or graf CNP in the follicle of the mutant mice, early reports to resume meiosis, CNP has been produced by granulosa cells is implicated in the regulation of ovum maturation has been suggested (non-patent document 4). However, in the follicular fluid levels detectable CNP peptide reports of whether or not there is, in the follicular fluid is established even in the CNP concentration and the possibility of pregnancy in terms of the relationship is not known at all.
  • 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 UNIVERSITY OF FUKUI
  • 発明者(英語)
  • MIYAMOTO, Kaoru
  • MIZUTANI, Tetsuya
  • ORISAKA, Makoto
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LA LC LK LR LS LT LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG
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