JP4791551B2 - 塩素イオン輸送の調節における活性に関する化合物のスクリーニング - Google Patents
塩素イオン輸送の調節における活性に関する化合物のスクリーニング Download PDFInfo
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Description
ClC−7およびOstm1は、内因性物質(図3d)または過剰発現タンパク質(図6)を使用して共免疫沈降させ得る。図3dで見られるように、ClC−7はOstm1で脳から効率よく共免疫沈降され、逆もまた同様であった。共免疫沈降法はClC−7/Ostm1複合体を明らかにする。表示されている遺伝子型からの可溶化脳膜をゲルの直接負荷するか(投入、レーン1〜3)、または最初にClC−7(レーン4、5)またはOstm1抗体(レーン6、7)で免疫沈降させた。
a.タンパク質の生産:
完全長ClC−7 cDNA(RT−PCRによってNBでクローニングし、配列決定して確認し、gi139725672と比較した)を、ATGおよび終結コドンを除去するためにPCRによってTOPO(Invitrogen)ベクターにクローニングした。mycおよびhisタグを、picZαAベクター(Invitrogen)へのEcoRIクローニングによってそのC末端で融合した。
Ni−NTA精製(Invitrogen Manual 021202)を、Ni−NTAビーズを使用して実施する。製造者によって推奨されているようにビーズを作製した後、Ni−NTAビーズ200μlにつきClC−7 Sf9細胞抽出物1mlを4℃で一晩インキュベートする。上清を取り除き、Ostm1抽出物1mlを、1nMの濃度の様々な試験化合物と共に4℃で2時間添加する。非結合物質を、PBS 2ml、0.2mM NaCl−2%CHAPSで3回洗うことによって洗浄する。
a.タンパク質の生産
完全長ClC−7 cDNA(RT−PCRによってNBでクローニングし、配列決定して確認し、gi139725672と比較した)を、ATGおよび終結コドンを除去するためにPCRによってTOPO(Invitrogen)ベクターにクローニングした。mycおよびhisタグを、picZαAベクター(Invitrogen)へのEcoRIクローニングによってそのC末端で融合した。
Ni−NTA精製(Invitrogen Manual 021202)を、Ni−NTAビーズを使用して実施する。製造者によって推奨されているようにビーズを作製した後、Ni−NTAビーズ200μlにつきClC−7 Sf9細胞抽出物1mlを、1nMの濃度の様々な試験化合物と共に4℃で一晩インキュベートする。非結合物質を、PBS 2ml、0.2mM NaCl−2%CHAPSで3回洗うことによって洗浄する。
図6を参照して、Ostm1を、HEK293細胞において指示されているCLCタンパク質と一過性に共発現させた。そのような過剰発現後、約80kD(矢じり)のOstm1種だけがウエスタンブロットにおいて検出されたが、35〜45kDのOstm1種は検出されなかった。Ostm1を、Ostm1のカルボキシ末端に対するモルモット抗体を用いてトランスフェクト細胞溶解産物から免疫沈降させたとき、ClC−7は共沈降した。従って、ClC−7はまた、切断されていないOstm1種とも相互作用する。これに対し、ClC−6またはClC−3は共沈降することができず、ClC−7/Ostm1相互作用の特異性を明らかにした。
Claims (13)
- ClC−7による塩素輸送の調節における活性に関してまたはOstm1の細胞内局在の調節における活性に関して、試験化合物をスクリーニングするための方法であって、試験化合物がOstm1によるClC−7への結合を妨げるかどうかまたは妨げる程度を測定するステップを含む、方法。
- 前記試験化合物の存在下で、ClC−7またはOstm1に結合することができるClC−7のフラグメントを、Ostm1またはClC−7に結合することができるOstm1のフラグメントに暴露するステップと、ClC−7またはClC−7のフラグメントとOstm1またはOstm1のフラグメントの間の結合が妨げられるかどうかまたは妨げられる程度を測定するステップとを含む請求項1に記載の方法。
- 前記暴露ステップにおいて、前記ClC−7またはClC−7のフラグメントおよびOstm1またはOstm1のフラグメントの一方が固体支持体に固定化され、他方および前記試験化合物が溶液中に存在する請求項2に記載の方法。
- 溶液中に存在するClC−7またはClC−7のフラグメントあるいはOstm1またはOstm1のフラグメントが、検出可能な標識を担持する請求項3に記載の方法。
- 前記検出可能な標識が、放射性標識、酵素標識、発光するように刺激され得る標識である請求項4に記載の方法。
- 前記暴露ステップにおいて、ClC−7またはClC−7のフラグメント、Ostm1またはOstm1のフラグメント、および試験化合物の全てが、溶液中に存在する請求項2に記載の方法。
- 前記ClC−7またはClC−7のフラグメントおよび前記Ostm1またはOstm1のフラグメントが、各々標識を担持し、前記標識の近接性が検出可能である請求項6に記載の方法。
- ClC−7とOstm1が、細胞または細胞内小器官内にインサイチューで存在する請求項2に記載の方法。
- ClC−7およびOstm1が、各々標識を担持し、前記標識の近接性が検出可能である請求項8に記載の方法。
- Ostm1またはOstm1のフラグメントが、哺乳動物Ostm1であるかまたは哺乳動物Ostm1に由来する請求項2〜9のいずれか一項に記載の方法。
- Ostm1またはOstm1のフラグメントが、マウスOstm1またはヒトOstm1であるか、あるいはマウスOstm1またはヒトOstm1に由来する、請求項10に記載の方法。
- ClC−7またはClC−7のフラグメントが、哺乳動物ClC−7であるかまたは哺乳動物ClC−7に由来する、請求項2〜9のいずれかに記載の方法。
- ClC−7またはClC−7のフラグメントが、マウスClC−7またはヒトClC−7であるか、あるいはマウスClC−7またはヒトClC−7に由来する、請求項10に記載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0525898.3A GB0525898D0 (en) | 2005-12-20 | 2005-12-20 | Screening compounds for activity in modulating chloride ion transport |
| GB0525898.3 | 2005-12-20 | ||
| PCT/EP2006/069829 WO2007071645A1 (en) | 2005-12-20 | 2006-12-18 | Screening compounds for activity in modulating chloride ion transport |
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| Publication Number | Publication Date |
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| JP2009520196A JP2009520196A (ja) | 2009-05-21 |
| JP4791551B2 true JP4791551B2 (ja) | 2011-10-12 |
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| Country | Link |
|---|---|
| US (1) | US7851165B2 (ja) |
| EP (1) | EP1963864B1 (ja) |
| JP (1) | JP4791551B2 (ja) |
| AT (1) | ATE451620T1 (ja) |
| DE (1) | DE602006011054D1 (ja) |
| GB (1) | GB0525898D0 (ja) |
| WO (1) | WO2007071645A1 (ja) |
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| KR20080032014A (ko) | 2003-01-14 | 2008-04-11 | 길리애드 사이언시즈, 인코포레이티드 | 복합 항바이러스 치료를 위한 조성물 및 방법 |
| TWI375560B (en) | 2005-06-13 | 2012-11-01 | Gilead Sciences Inc | Composition comprising dry granulated emtricitabine and tenofovir df and method for making the same |
| TWI471145B (zh) | 2005-06-13 | 2015-02-01 | Bristol Myers Squibb & Gilead Sciences Llc | 單一式藥學劑量型 |
| EP2420830B1 (en) | 2010-08-16 | 2016-11-16 | Forschungsverbund Berlin e.V. | Chloride transporter ClC-7 and cell-based screening method |
| CN105853998B (zh) * | 2016-04-08 | 2019-09-24 | 武汉大学 | 骨硬化病相关跨膜蛋白在治疗或预防ev71感染药物中的应用 |
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| DE60214673T2 (de) * | 2001-01-23 | 2007-09-13 | Pharmos Bioscience A/S | Verfahren zum screening von verbindungen auf aktivität bei der behandlung einer mit osteoklasten zusammenhängenden knochenerkrankung |
| WO2002079414A2 (en) * | 2001-03-29 | 2002-10-10 | Deltagen, Inc. | Transgenic mice containing clcn7 chloride channel gene disruptions |
| US20030215787A1 (en) * | 2002-01-23 | 2003-11-20 | Wen-Pin Yang | Modulators of the CLC-7 chloride channel and methods for their identification and use in the treatment and prevention of osteoporosis and related disease states |
| US20040009915A1 (en) * | 2002-03-06 | 2004-01-15 | Han Chang | Polynucleotides encoding a novel intracellular chloride channel-related polypeptide |
| US20040219511A1 (en) * | 2003-04-30 | 2004-11-04 | Liang Dong Cuan | High-throughput screening assay for chloride channel activity using atomic absorption spectroscopy |
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2005
- 2005-12-20 GB GBGB0525898.3A patent/GB0525898D0/en not_active Ceased
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- 2006-12-18 AT AT06841423T patent/ATE451620T1/de not_active IP Right Cessation
- 2006-12-18 JP JP2008546411A patent/JP4791551B2/ja not_active Expired - Fee Related
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| Publication number | Publication date |
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| ATE451620T1 (de) | 2009-12-15 |
| DE602006011054D1 (de) | 2010-01-21 |
| GB0525898D0 (en) | 2006-02-01 |
| US20090170127A1 (en) | 2009-07-02 |
| WO2007071645A1 (en) | 2007-06-28 |
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