JP2006503570A - アルツハイマー病で使用するためのSrcキナーゼの阻害剤 - Google Patents
アルツハイマー病で使用するためのSrcキナーゼの阻害剤 Download PDFInfo
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Abstract
Description
a)Srcタンパク質(すなわち、発現要素の制御下で、SrcをコードするDNA)を用意する工程、および、
b)化合物が、Srcの活性を阻害するかどうかを測定する工程、
を含む。
a)Src発現を調節する配列を用意する工程(すなわち、Srcプロモーター配列)、および、
b)化合物が、Srcタンパク質の発現を阻害するかどうかを測定する工程、
を含む。
a)上述の方法のいずれか1つを用いることによって治療化合物を同定する工程;
b)同定された化合物を最適化する工程;および、
c)最適化された化合物を製剤化する工程、
を含む。
PPのチロシンのリン酸化は、その細胞質ドメインの結合特性を変化させ、続いて、結果としてAPPのプロセシングが改変され得ることが予測される。そうであれば、これは、現在利用可能なチロシンキナーゼ阻害剤の使用が有用であることを証明しており、アルツハイマー病の細胞モデルおよび動物モデルにおいてAPPプロセシング産物の放出を薬理学的に調節するための新規の阻害剤を設計することができる。
細胞培養、トランスフェクションおよび処理
ヒト胎児腎臓細胞株(HEK293)を、10%ウシ胎仔血清を添加したダルベッコ改変最小培地で、37℃で、5%CO2雰囲気中で培養した。トランスフェクションのために、細胞を抗生物質非含有培地で16時間成長させ、リポフェクトアミン2000(インビトロジェン(Invitrogen))で製造元の説明に従ってトランスフェクトした。DNA総量を空のベクターDNAを添加することによって一定に維持した。トランスフェクションの48時間後、培地を回収し、同時に、細胞を氷冷リン酸緩衝生理食塩水(PBS)中で回収し、溶解用緩衝液(50mMトリス/HCl,pH7.5,150mM NaCl,0.5%トリトンX−100,10%グリセロール,50mM NaF,1mMバナジウム酸Na)で、プロテアーゼ阻害剤カクテル(コンプリート,EDTAフリー,ロシュ(Roche))の存在下で、穏かに溶解した。抽出物を16,000×g、4℃での遠心分離で透明化し、タンパク質濃度をバイオラッド(Bio−Rad)タンパク質分析で製造元の指示書に従って測定した。代謝性標識するために、トランスフェクションの36時間後、細胞をメチオニンおよびシステイン非含有培地で30分間インキュベートし、次に、培地を、80μCi/mlの35S−メチオニン/システイン混合物(プロミックス(Promix),1000Ci/mmol,アマシャム・ファルマシア・バイオテク)を含む新鮮培地と交換した。30分間パルスし、続いて、放射活性培地を完全培地で90分間かけて交換した。野生型APP751を発現するCHO細胞は、N.Zambrano等(1997年)J.Biol.Chem.272,6399〜6405に記載されている。
HEK293細胞を、APP695発現ベクターでトランスフェクトした。この細胞系は、細胞が高効率にトランスフェクトされ、APPの成熟に必要な一連の全プロセシング活性を示すために用いられた。実際に、ヒトAPP695発現ベクターのトランスフェクションの際に、α−セクレターゼ産物(APPsec)と、β−、γ−セクレターゼ産物(Aβ)はいずれも培地に蓄積された。空のベクター、または、活性型Abl(Abl−PP)、または、活性型Src(SrcYF)キナーゼのいずれかおよびAPPによりHEK293細胞をコトランスフェクトし、APPsecとAβの分泌を測定した。トランスフェクトされた細胞は、35S−Met/Cys混合物を用いて30分間パルス標識されており、非標識アミノ酸で90分間チェイスした。培地とタンパク質抽出物はいずれも、放射標識したAPPsecおよび完全長APP(holo−APP)それぞれを定量するための免疫沈降実験で用いられた。完全長APPの安定性は、Abl−PPまたはSrcYF活性型キナーゼいずれかによるコトランスフェクションによる影響は受けないが(図3A)、いずれの場合においても、APPsecの相対量(パルス期間中に合成された対応する完全長APPを基準とした)の減少を観察した(図3B)。これは、活性キナーゼとAPPとのコトランスフェクションの際の、α−セクレターゼ経路の活性の減少と解釈することができる。
次に、上述の通りにトランスフェクトされた細胞からのAβの蓄積を調べた。トランスフェクションの48時間後に、培地上でサンドイッチELISA分析によって定量を行った(図4)。この分析により、Src発現細胞において、分泌されたAβの量は、コントロールベクターまたはAbl−PPの存在における場合よりも増加していることが明確に示された。
1) T. Russo et al. (1998) FEBS Lett. 434, 1-7.
2) N. Zambrano et al. (1997) J. Biol. Chem. 272, 6399-6405.
3) Sabo S. et al. (1999) J. Biol. Chem. 274, 7952-7957.
4) Borg J.P. et al. (1998) J. Biol. Chem. 273, 14761-14766.
5) Iijima, K. et al. (2000) J. Neurochem. 75, 1085-1091.
6) Suzuki, T. et al. (1994) EMBO J. 13, 1114-1122.
7) Oishi, M. et al. (1997) Mol. Med. 3, 111-123.
8) Aplin, E. E. et al. (1996) J. Neurochem. 67, 699-707.
9) Standen, C. L. et al. (2001) J. Neurochem. 76, 316-320.
10) Ando, K. et al. (1999) J. Neurosci. 19, 4421-4427.
11) Ando K. et al. (2001) J Biol Chem.;276, 40353-40361.
12) Zambrano N. et al. (2001) J Biol Chem 276, 19787-19792.
13) Hanke, J.H. et al. (1996) J. Biol. Chem. 271, 695-701.
Claims (10)
- a)Srcタンパク質を用意する工程、および、
b)Src活性に対する化合物の阻害作用を測定する工程を含む、
アルツハイマー病を治療するための治療化合物を同定する方法。 - a)Src発現を調節する配列を用意する工程、および、
b)化合物が、Srcタンパク質の発現を阻害するかどうかを測定する工程を含む、
アルツハイマー病を治療するための治療化合物を同定する方法。 - Srcは、ヒトSrcまたはマウスSrcである、請求項1または2に記載の方法。
- Srcは、配列番号1、配列番号2または配列番号3の配列を有する、請求項1〜3のいずれか一項に記載の方法。
- Srcは、哺乳動物細胞で発現される、請求項1に記載の方法。
- 調節配列は、Srcプロモーターである、請求項2に記載の方法。
- a)請求項1〜6のいずれか一項に記載の方法を用いることによって治療化合物を同定する工程;
b)同定された化合物を最適化する工程;および、
c)最適化された化合物を製剤化する工程、
を含む、アルツハイマー病を治療するための医薬の製造方法。 - アルツハイマー病を治療するための医薬を製造するための、請求項1〜6のいずれか一項に記載の方法によって同定された化合物の使用。
- 医薬として使用するためのPP2。
- アルツハイマー病を治療するための医薬を製造するためのPP2の使用。
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EP20020292608 EP1413887A1 (en) | 2002-10-22 | 2002-10-22 | Inhibitors of Src kinase for use in Alzheimer's disease |
PCT/EP2003/012063 WO2004038422A2 (en) | 2002-10-22 | 2003-10-06 | Inhibitors of src kinase for use in alzheimer's disease |
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WO2001045751A1 (en) * | 1999-12-22 | 2001-06-28 | The Scripps Research Institute | Angiogenesis and vascular permeability modulators and inhibitors |
JP2001255318A (ja) * | 2000-03-09 | 2001-09-21 | Mitsubishi Chemicals Corp | 神経細胞死抑制作用を有する薬剤及びそのスクリーニング方法 |
WO2002046384A2 (en) * | 2000-12-06 | 2002-06-13 | Incyte Genomics, Inc. | Kinases and phosphatases sequences, and use thereof |
WO2004001068A2 (en) * | 2002-06-25 | 2003-12-31 | Serono Genetics Institute S.A. | Use of pp2a phosphatase modulators in the treatment of mental disorders |
WO2004009540A2 (en) * | 2002-07-19 | 2004-01-29 | Promega Corporation | Methods and kits for transferases |
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2002
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2003
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- 2003-10-06 DK DK03776874T patent/DK1556703T3/da active
- 2003-10-06 JP JP2004546025A patent/JP2006503570A/ja active Pending
- 2003-10-06 WO PCT/EP2003/012063 patent/WO2004038422A2/en active Application Filing
- 2003-10-06 EP EP03776874A patent/EP1556703B1/en not_active Expired - Lifetime
- 2003-10-06 DE DE60324309T patent/DE60324309D1/de not_active Expired - Lifetime
- 2003-10-06 ES ES03776874T patent/ES2314261T3/es not_active Expired - Lifetime
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2001045751A1 (en) * | 1999-12-22 | 2001-06-28 | The Scripps Research Institute | Angiogenesis and vascular permeability modulators and inhibitors |
JP2001255318A (ja) * | 2000-03-09 | 2001-09-21 | Mitsubishi Chemicals Corp | 神経細胞死抑制作用を有する薬剤及びそのスクリーニング方法 |
WO2002046384A2 (en) * | 2000-12-06 | 2002-06-13 | Incyte Genomics, Inc. | Kinases and phosphatases sequences, and use thereof |
WO2004001068A2 (en) * | 2002-06-25 | 2003-12-31 | Serono Genetics Institute S.A. | Use of pp2a phosphatase modulators in the treatment of mental disorders |
WO2004009540A2 (en) * | 2002-07-19 | 2004-01-29 | Promega Corporation | Methods and kits for transferases |
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AU2003286144A8 (en) | 2004-05-13 |
DK1556703T3 (da) | 2009-02-23 |
US20040176313A1 (en) | 2004-09-09 |
ES2314261T3 (es) | 2009-03-16 |
EP1556703B1 (en) | 2008-10-22 |
WO2004038422A3 (en) | 2004-09-02 |
AU2003286144A1 (en) | 2004-05-13 |
DE60324309D1 (de) | 2008-12-04 |
EP1413887A1 (en) | 2004-04-28 |
ATE412186T1 (de) | 2008-11-15 |
WO2004038422A2 (en) | 2004-05-06 |
EP1556703A2 (en) | 2005-07-27 |
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