JP2008514238A - 卵母細胞の成熟のためのil−17の使用 - Google Patents
卵母細胞の成熟のためのil−17の使用 Download PDFInfo
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Abstract
Description
当業界が必要としているものは、OHSSの発生を軽減するIVFプロトコルである。このプロトコルは、卵母細胞の成熟のために投与される外因性ホルモンの量を減少させ又は無くすはずである。本発明は、これらの必要性を満たす。
本発明は、IL−17がインビトロでの卵母細胞の成熟を誘導するという発見に関する。IL−17を用いて卵母細胞の成熟を誘導することにより、IVF処理プロトコルにおいて投与する外因性ホルモンの量を減少させることができる。
IL−17は卵母細胞のインビトロでの成熟に用いることができる。
卵母細胞が、発達の時期、例えば早期腔卵胞及び腔卵胞(これらに限定されない)にある間に、未熟卵母細胞を女性から取り除くことができる。
単離した未熟卵母細胞は、IL−17サイトカインを含んで成る培地中でインキュベートすることができる。培地は、任意の生理学的に許容される培地、例えばTCM 199、αMEM及びHam’s F10(これらに限定されない)であることができる。培地は、任意に1又は複数の因子、例えばFSH、hCG、エストラジオール、システアミン、ピルビン酸ナトリウム、グルタミン、及び自己加熱不活性化血清又は卵胞液(これらに限定されない)を更に含んで成ることができる。
成熟卵母細胞は、インビトロで精子と共にインキュベートし、Textbook of Assisted Reproductive Techniques Laboratory & Clinical Perspectives(Gardner,et al.,2001 Martin Ldunetz Ltd., London)(その内容は、引用文献により本明細書中に組み込まれている)に記載されている標準的なインビトロでの受精を用いて哺乳動物の胚を産生することができる。胚は、出産まで胚を保持することができる女性の子宮に移植することができる。
IL−17は、構造的に関連したサイトカインのファミリーである。IL−17サイトカインは、様々なタイプの細胞、例えば線維芽細胞、内皮細胞、及び上皮細胞において多面的生物活性を示す。IL−17サイトカインの代表的な例としては、IL−17/IL−17A、IL− 17B、IL− 17C、IL− 17D、IL− 17E及びIL−17Fが挙げられる。IL−17は、IL−17/IL−17A、IL− 17B、IL− 17C、IL− 17D、IL− 17E又はIL−17Fのアナログ、誘導体、フラグメント、ホモログ、変異型又はそれらの組み合わせであることができる。アナログ、誘導体、フラグメント、ホモログ又は変異型は、IL−17と少なくとも75%、80%、85%。90%又は95%の配列の同一性を有することができる。IL−17サイトカインは、保存されたC末端領域を共有し、異なるN末端セグメントを有し得る。IL−17サイトカインは、ジスルフィド結合により結合し得る、ホモ二量体であることができる。IL−17は、ヒトIL−17であることができる。
マウス卵丘−卵母細胞複合体の単離
PMSG(5IU/雌性、Calbiochem 367222)は、7〜8週齢のCD−1雌性マウス(35トータル;Charles River)を準備するのに用いた。マウスは、進行性の低酸素血症により48時間後に屠殺した。アルコール(70%)を、動物の腹部領域に適用してその部分を消毒し、毛による試料の汚染も減少させた。腹部切開を行い、腹腔を露出させた。卵管に接続した卵巣を、子宮角及び内臓脂肪症から取り除いた。卵巣/卵管試料を、3mlのL−15培地(Gibco 11415−064)と10%のウシ胎仔血清(FCS;Invitrogen 16000−044)を含む15mlチューブ(10/チューブ、Corning 430052)に置いた。卵巣/卵管試料を37℃で保持した。
マウス卵丘−卵母細胞複合体のインビトロでの卵丘拡張におけるIL−17の効果
同種細胞質を有する卵丘−無傷卵母細胞を、低倍率(20〜30×)の実体顕微鏡を用いて、実施例1に記載のとおりに調製したCOCから選択し、マウス(mouth)ガラスピペットを用いて、ウエルミネラルオイルあたりに90μlの培地(10% FCSを含むαMEM(Gibco 32571−036)及びPenStrep−Antibiotics(Invitrogen 15140−122))を含む96−ウエルプレート(2/ウエル)に移した。COCを96−ウエルプレートに添加する前に、プレート中の培地を、空気中に5%のCO2を含む加湿したインキュベーター中で37℃において1時間事前に平衡化した。
IL−17の用量反応試験
実施例2に記載した最初及び再確認試験からの結果に基づいて、用量反応試験をAS900048−6(IL−17−6His)及びAS900269−1(Met−IVKA−IL−17)に関して実施した。1つのウエルあたりに4〜5個のCOCを含む3つのウエルが各タンパク質濃度に対して指定されたことを除いて、実施例2に記載の方法と類似の方法において用量反応試験を実施した。特定のタンパク質(試験に添加する前に希釈しないものがあった)の濃度に依存して、試験タンパク質の希釈を行い、1:10の最終濃度とした。
IL−17サイトカインの試験
異なるIL−17サイトカインを、実施例2に記載した方法においてインビトロでの卵丘拡張を誘導する能力を試験した。表3〜8から分かるように、IL− 17B、IL− 17C、IL− 17D、IL− 17E及びIL−17Fはインビトロでの卵丘拡張を誘導することができた。更に、IL− 17B、IL− 17D及びIL−17Fは、IL−17Aと類似の活性を有した。
Claims (10)
- (a)未熟卵母細胞を調製すること;及び
(b)卵母細胞をIL−17と接触させること、
を含んで成る、インビトロで卵母細胞を成熟させる方法。 - IL−17が、IL−17/IL−17A、IL− 17B、IL− 17C、IL− 17D、IL− 17E及びIL−17Fから成る群から選択される、請求項1に記載の方法。
- IL−17が、IL−17/IL−17A又はそれと少なくとも80%の同一性を有するポリペプチドである、請求項1に記載の方法。
- 未熟卵母細胞が、外部ホルモン治療を受けていない女性に由来する、請求項1に記載の方法。
- 未熟卵母細胞が、外部ホルモン治療を受けた女性に由来する、請求項1に記載の方法。
- 女性が、GnRH、FSH、LH、hCG及びそれらの組み合わせから成る群から選択されるホルモンを投与された、請求項5に記載の方法。
- FSH、hCG、エストラジオール、システアミン、ピルビン酸ナトリウム、グルタミン、自己加熱不活性化血清及び卵胞液から成る群から選択される因子を含んで成る培地中で未熟卵母細胞が調製される、請求項1に記載の方法。
- 請求項1に記載の方法により産生された成熟卵母細胞。
- 卵母細胞が請求項1に記載の方法により産生される、成熟卵母細胞を精子を用いて処理することを含んで成る、インビトロで胚を産生する方法。
- 成熟卵母細胞を精子で処理することを含んで成る方法により胚が産生され、卵母細胞が請求項1に記載の方法により産生される、インビトロでの受精を必要とする胚を移植することを含んで成る、インビトロでの受精の方法。
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US61466704P | 2004-09-30 | 2004-09-30 | |
US60/614,667 | 2004-09-30 | ||
PCT/US2005/035372 WO2006039592A1 (en) | 2004-09-30 | 2005-09-30 | Use of il-17- for maturation of oocytes |
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CN113249305A (zh) * | 2021-06-04 | 2021-08-13 | 华南农业大学 | 卵母细胞体外成熟培养液添加剂、培养液及其应用 |
CN113403259B (zh) * | 2021-06-04 | 2023-01-17 | 华南农业大学 | 一种提高克隆胚胎发育质量的添加剂及其应用 |
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ES2329393T3 (es) | 2009-11-25 |
JP5188806B2 (ja) | 2013-04-24 |
EP1794287B1 (en) | 2009-07-22 |
WO2006039592A1 (en) | 2006-04-13 |
IL206440A0 (en) | 2010-12-30 |
CA2578573A1 (en) | 2006-04-13 |
AU2005292362A1 (en) | 2006-04-13 |
US20070231896A1 (en) | 2007-10-04 |
WO2006039592A9 (en) | 2006-07-27 |
NO20072245L (no) | 2007-04-30 |
DE602005015599D1 (de) | 2009-09-03 |
ATE437220T1 (de) | 2009-08-15 |
IL181908A (en) | 2010-11-30 |
IL181908A0 (en) | 2007-07-04 |
CA2578573C (en) | 2015-02-03 |
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EP1794287A1 (en) | 2007-06-13 |
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