JP2009060902A - ヒト第vii凝固因子変異型 - Google Patents
ヒト第vii凝固因子変異型 Download PDFInfo
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Abstract
【解決手段】特定の配列の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられている。
【選択図】なし
Description
非特許文献2(Iwanaga et al., Thromb. Haemost. (supplement August 1999), 466, abstract 1474 )は残基316〜320を欠失させたか又は残基311〜322をトリプシンからの対応の残基により置換した第VIIa因子変異型に関する。
本明細書中に記載の第VII因子変異型を組み換え核酸技術の手段により製造する。一般的に、クローンした野生型第VII因子核酸配列を修飾し所望のタンパク質をコードさせる。次に、この修飾配列を発現ベクター内に挿入し、次にこの発現ベクターを宿主細胞内に形質転換又はトランスフェクトする。高度な真核細胞、特に培養哺乳動物細胞が宿主細胞として好ましい。ヒト第VII因子についての完全なヌクレオチド及びアミノ酸配列が知られている(V.S.4,784,950を参照のこと、ここに組み換えヒト第VII因子のクローニング及び発現が記載されている)。ウシ第VII因子配列が Takeya et al. J. Biol. Chem. 263 : 14868-14872 (1988)に記載されている。
本発明は、本発明による好ましい第VII因子変異型を選択するための安定性アッセイをも提供する。これらのアッセイは簡単なインビトロ予備試験として実施されうる。
本発明による第VII因子変異型は、いくつかの原因、例えば凝固因子欠損(例えばA型若しくはB型血友病又は第XI若しくはVII 凝固因子の欠損)又は凝固因子阻害剤を有する出血障害の制御に使用されるか、あるいはそれらは正常に機能する血液凝固カスケード(凝固因子欠損又は凝固因子のいずれかに対する阻害剤がない)を有する対象に起こる過剰な出血の制御のために使用される。前記出血は不完全な血小板機能、血小板減少症又はフォン・ウィルブランド症により引き起こされる。それらは、高められた線溶活性がさまざまな刺激により誘発された対象において見られる。
〔L305V/M306D/D309S〕−FVII、〔L305V〕−FVII、〔L305I〕−FVII、〔L305T〕−FVII、及び〔F374P〕−FVIIをコードするDNA構築物を、着目の挿入物を伴う高次コイルの2本鎖DNAベクター及び所望の変異を含む2の合成プライマーを用いた特定部位突然変異誘発により製造した。以下のプライマーを用いた。
原則的に以前に記載されたとおり(Thim et. al. (1988) Biochemistry 27, 7785-7793 ; Persson and Nielson (1996) FEBS Lett. 385, 241-243 )、BHK細胞を形質移入して前記変異型〔L305V/M306D/D309S〕−FVIIの発現を得た。前記第VII因子変異型を以下のとおり精製した: 5mM EDTA、0.1% Triton X−100、及び10mM Trisの添加、8.0へのpH調整、並びに水の添加による10〜11mS/cmへの導電率 の調整の後、培養上清をQ Sepharose Fast Flow(Pharmacia Biotech)の25mlカラムに添加した。タンパク質の溶出を10mM Tris、50mM NaCl、0.1% Triton X−100、pH8.0から10mM Tris、1M NaCl、5mM CaCl2 、0.1% Triton X−100、pH7.5への勾配により果した。〔L305V/M306D/D309S〕−FVIIを含む画分をプールし、10mM CaCl2 を添加し、そしてCNBr活性化Sepharose 4B(Pharmacia Biotech)に結合したモノクローナル抗体F1A2(Novo Nordisk, Bagsvaerd, Denmark)を含む25mlカラムに適用した。前記カラムを10mM CaCl2 、100mM NaCl、及び0.02% Triton X−100含有 50mM Hepes、pH7.5により平衡化した。平衡化バッファー及び2M NaCl含有平衡化バッファーを用いて洗浄した後、結合物質をCaCl2 の代わりに10mM EDTAを含む平衡化バッファーを用いて溶出した。使用又は保存の前に、EDTAを上回る過剰なCaCl2 を添加するか、又は〔L305V/M306D/D309S〕−FVIIをCa2+含有バッファーに移した。各ステップの収量を第VII因子ELISA計測法により追跡し、そして前記精製タンパク質をSDS−PAGEにより分析した。
原則的に以前に記載されたとおり(Thim et. al. (1988) Biochemistry 27, 7785-7793 ; Persson and Nielson (1996) FEBS Lett. 385, 241-243 )、BHK細胞を形質移入して前記変異型〔L305V〕−FVIIの発現を得た。前記第VII因子変異型を以下のとおり精製した: 5mM EDTA、0.1% Triton X−100、及び10mM Trisの添加、8.0へのpH調整、並びに水の添加による10〜11mS/cmへの導電率の調整の後、培養上清をQ Sepharose Fast Flow(Pharmacia Biotech )の25mlカラムに添加した。タンパク質の溶出を10mM Tris、50mM NaCl、0.1% Triton X−100、pH8.0から10mM Tris、1M NaCl、5mM CaCl2 、0.1% Triton X−100、pH7.5への勾配により果した。〔L305V〕−FVIIを含む画分をプールし、10mM CaCl2 を添加し、そしてCNBr活性化Sepharose 4B(Pharmacia Biotech )に結合したモノクローナル抗体F1A2(Novo Nordisk, Bagsvaerd, Denmark)を含む25mlカラムに適用した。前記カラムを10mM CaCl2 、100mM NaCl、及び0.02% Triton X−100含有 50mM Hepes、pH7.5により平衡化した。平衡化バッファー及び2M NaCl含有平衡化バッファーを用いて洗浄した後、結合物質をCaCl2 の代わりに10mM EDTAを含む平衡化バッファーを用いて溶出した。使用又は保存の前に、EDTAを上回る過剰なCaCl2 を添加するか、又は〔L305V〕−FVIIをCa2+含有バッファーに移した。各ステップの収量を第VII因子ELISA計測法により追跡し、そして前記精製タンパク質をSDS−PAGEにより分析した。
原則的に以前に記載されたとおり(Thim et. al. (1988) Biochemistry 27, 7785-7793 ; Persson and Nielson (1996) FEBS Lett. 385, 241-243 )、BHK細胞を形質移入して前記変異型〔F374P〕−FVIIの発現を得た。前記第VII因子変異型を以下のとおり精製した: 5mM EDTA、0.1% Triton X−100、及び10mM Trisの添加、8.0へのpH調整、並びに水の添加による10〜11mS/cmへの導電率の調整の後、培養上清をQ Sepharose Fast Flow(Pharmacia Biotech )の25mlカラムに添加した。タンパク質の溶出を10mM Tris、50mM NaCl、0.1% Triton X−100、pH8.0から10mM Tris、1M NaCl、5mM CaCl2 、0.1% Triton X−100、pH7.5への勾配により果した。〔F374P〕−FVIIを含む画分をプールし、10mM CaCl2 を添加し、そしてCNBr活性化Sepharose 4B(Pharmacia Biotech )に結合したモノクローナル抗体F1A2(Novo Nordisk, Bagsvaerd, Denmark)を含む25mlカラムに適用した。前記カラムを10mM CaCl2 、100mM NaCl、及び0.02% Triton X−100含有 50mM Hepes、pH7.5により平衡化した。平衡化バッファー及び2M NaCl含有平衡化バッファーを用いて洗浄した後、結合物質をCaCl2 の代わりに10mM EDTAを含む平衡化バッファーを用いて溶出した。使用又は保存の前に、EDTAを上回る過剰なCaCl2 を添加するか、又は〔F374P〕−FVIIをCa2+含有バッファーに移した。各ステップの収量を第VII因子ELISA計測法により追跡し、そして前記精製タンパク質をSDS−PAGEにより分析した。
原則的に以前に記載されたとおり(Thim et. al. (1988) Biochemistry 27, 7785-7793 ; Persson and Nielson (1996) FEBS Lett. 385, 241-243 )、BHK細胞を形質移入して前記変異型〔L305I〕−FVII又は〔L305T〕−FVIIの発現を得た。前記第VII因子変異型を以下のとおり精製した: 5mM EDTA、0.1% Triton X−100、及び10mM Trisの添加、8.0へのpH調整、並びに水の添加による10〜11mS/cmへの導電率の調整の後、培養上清をQ Sepharose Fast Flow(Pharmacia Biotech )の25mlカラムに添加した。タンパク質の溶出を10mM Tris、50mM NaCl、0.1% Triton X−100、pH8.0から10mM Tris、1M NaCl、5mM CaCl2 、0.1% Triton X−100、pH7.5への勾配により果した。〔L305I〕−FVII又は〔L305T〕−FVIIを含む画分をプールし、10mM CaCl2 を添加し、そしてCNBr活性化Sepharose 4B(Pharmacia Biotech )に結合したモノクローナル抗体F1A2(Novo Nordisk, Bagsvaerd, Denmark)を含む25mlカラムに適用した。前記カラムを10mM CaCl2 、100mM NaCl、及び0.02% Triton X−100含有 50mM Hepes、pH7.5により平衡化した。平衡化バッファー及び2M NaCl含有平衡化バッファーを用いて洗浄した後、結合物質をCaCl2 の代わりに10mM EDTAを含む平衡化バッファーを用いて溶出した。使用又は保存の前に、EDTAを上回る過剰なCaCl2 を添加するか、又は〔L305I〕−FVII又は〔L305T〕−FVIIをCa2+含有バッファーに移した。各ステップの収量を第VII因子ELISA計測法により追跡し、そして前記精製タンパク質をSDS−PAGEにより分析した。
天然(野生型)第VIIa因子と第VII因子変異型(共に以下「第VIIa因子」と呼ぶ)をそれらの特異的活性を直接比較するために同時にアッセイした。前記アッセイをマイクロタイター・プレート(MaxiSorp, Nunc, Denmark )中で行った。終濃度1mMの色素原性基質D−Ile−Pro−Arg−p−ニトロアニリド(S-2288, Chromogenix, Sweden )を、0.1M NaCl、5mM CaCl2 、及び1mg/mlウシ血清アルブミン含有50mM Hepes、pH7.4中の第VIIa因子(終濃度100nM)に添加した。405nmでの吸光度をSpectra Max(商標)340プレート・リーダー(Molecular Devices, USA)により連続的に計測した。酵素を含まないブランク・ウェルにおける吸光度を差し引いた後、20分間インキュベーションの間に発生した吸光度を第 VIIa 因子の変異型と野生型の活性の間の比を計算するために使用した: 比=(A405nm 第VIIa因子変異型)/(A405nm 第VIIa因子野生型)。
天然(野生型)第VIIa因子と第VII因子変異型(共に以下「第VIIa因子」と呼ぶ)をそれらの特異的活性を直接比較するために同時にアッセイした。前記アッセイをマイクロタイター・プレート(MaxiSorp, Nunc, Denmark )中で行った。0.1M NaCl、5mM CaCl2 、及び1mg/mlウシ血清アルブミン含有50mM Hepes、pH7.4 100μL中、第VIIa因子(10nM)と第 X因子(0.8μM)を15分間インキュベートした。次に第X因子の開裂を0.1M NaCl、20mM EDTA、及び1mg/mlウシ血清アルブミン含有50mM Hepes、pH7.4 50μLの添加により停止させた。産生された第Xa因子の量を、終濃度0.5mMの色素原性基質Z−D−Arg−Gly−Arg−p−ニトロアニリド(S -2765, Chromogenix, Sweden )の添加により計測した。405nmでの吸光度をSpectra Max(商標)340プレート・リーダー(Molecular Devices, USA)により連続的に計測した。FVIIa を含まないブランク・ウェルにおける吸光度を差し引いた後、10分間に発生した吸光度を第VIIa因子の変異型と野生型の活性の間の比を計算するために使用した: 比=(A405nm 第VIIa因子変異型)/(A405nm 第VIIa因子野生型)。
Claims (41)
- 配列番号1の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1の他のアミノ酸残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられているヒト第VII凝固因子変異型。ただし、前記変異型はFVII(Ala305)ではない。
- 前記のプロテアーゼ・ドメイン(153〜406位)内の残りの位置で最大20のアミノ酸残基が、置き換えられている、請求項1に記載のヒト第VII凝固因子変異型。
- 274位及び/又は300〜304位及び/又は306〜312位の中の少なくとも1の残基が置き換えられている、請求項1又は2に記載のヒト第VII凝固因子変異型。
- 少なくとも274位の残基が置き換えられている、請求項1〜3のいずれか1項に記載のヒト第VII凝固因子変異型。
- 300〜304位の中の少なくとも1の残基が置き換えられている、請求項1〜4のいずれか1項に記載のヒト第VII凝固因子変異型。
- 306〜312位の中の少なくとも1の残基が置き換えられている、請求項1〜5のいずれか1項に記載のヒト第VII凝固因子変異型。
- 274位のAla残基が、Met、Leu、Lys若しくはArgにより置き換えられ;そして/又は304位のArg残基が、Tyr、Phe、Leu若しくはMetにより置き換えられ;そして/又は306位のMet残基が、Asp若しくはAsnにより置き換えられ;そして/又は309位のAsp残基が、Ser若しくはThrにより置き換えられている、請求項3に記載のヒト第VII凝固因子変異型。
- 305位のLeu残基が、Val、Tyr及びIleから成る群から選ばれるアミノ酸残基により置き換えられているか、又は374位のPhe残基が、Proにより置き換えられている、請求項1〜7のいずれか1項に記載のヒト第VII凝固因子変異型。
- 305位のLeu残基が、置き換えられている唯一のアミノ酸残基である、請求項1に記載のヒト第VII凝固因子変異型。
- 374位のPhe残基が、置き換えられている唯一のアミノ酸残基である、請求項1に記載のヒト第VII凝固因子変異型。
- 305位のLeu残基が、Valにより置き換えられている、請求項9に記載のヒト第VII凝固因子変異型。
- 前記変異型の活性と配列番号1に示す天然第VII因子ポリペプチドの活性の比が、本明細書中で定めた「インビトロ加水分解アッセイ」により試験した場合に少なくとも約1.25である、請求項1〜11のいずれか1項に記載のヒト第VII凝固因子変異型。
- 前記比が少なくとも約2.0、好ましくは少なくとも約4.0である、請求項12に記載のヒト第VII凝固因子変異型。
- 請求項1〜13のいずれか1項に記載の第VII因子変異型をコードするヌクレオチド配列を含む核酸構築物。
- 請求項14に記載の核酸構築物を含む組み換えベクター。
- 請求項14に記載の核酸構築物又は請求項15に記載のベクターを含む組み換え宿主細胞。
- 哺乳動物起源である、請求項16に記載の組み換え宿主細胞。
- 前記細胞がCHO細胞BHK細胞から成る群から選ばれる、請求項17に記載の組み換え宿主細胞。
- 請求項14に記載の核酸構築物を含み、かつ、発現するトランスジェニック動物。
- 請求項14に記載の核酸構築物を含み、かつ、発現するトランスジェニック植物。
- 前記核酸構築物の発現及び得られたポリペプチドの培地からの回収が可能な条件下、適当な育成培地中で請求項16〜18のいずれか1項に記載の細胞を培養することを含む、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型の製造方法。
- 請求項19に記載のトランスジェニック動物により産生された乳から前記変異型を回収することを含む、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型の製造方法。
- 請求項20に記載のトランスジェニック植物の細胞を培養し、そして得られた植物からその変異体を回収することを含む、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型の製造方法。
- 配列番号1の305位のLeu残基又は374位のPhe残基が核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1のその他のアミノ酸残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられているヒト第VII凝固因子変異型;及び場合により医薬として許容される担体を含む医薬組成物。
- 前記プロテアーゼ・ドメイン(153〜406位)内の残りの位置で最大20のアミノ酸残基が、置き換えられている、請求項24に記載の医薬組成物。
- 274位及び/又は300〜304位及び/又は306〜312位の中の少なくとも1の残基が、置き換えられている、請求項24又は25に記載の医薬組成物。
- 274位のAla残基が、Met、Leu、Lys若しくはArgにより置き換えられ;そして/又は304位のArg残基が、Tyr、Phe、Leu若しくはMetにより置き換えられ;そして/又は306位のMet残基が、Asp若しくはAsnにより置き換えられ;そして/又は309位のAsp残基が、Ser若しくはThrにより置き換えられている、請求項24〜26のいずれか1項に記載の医薬組成物。
- 305位のLeu残基が、Val、Tyr及びIleから成る群から選ばれるアミノ酸残基により置き換えられているか、又は374位のPhe残基が、Proにより置き換えられている、請求項24〜27のいずれ1項に記載の医薬組成物。
- 305位のLeu残基が、置き換えられている唯一のアミノ酸残基である、請求項24に記載の医薬組成物。
- 374位Phe残基が、置き換えられている唯一のアミノ酸残基である、請求項24に記載の医薬組成物。
- 305位のLeu残基が、Valにより置き換えられている、請求項29に記載の医薬組成物。
- 前記変異型の活性と配列番号1に示す天然第VII因子ポリペプチドの活性の比が、本明細書中で定めた「インビトロ加水分解アッセイ」により試験した場合に少なくとも約1.25である、請求項24〜31のいずれか1項に記載の医薬組成物。
- 請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型、及び場合により医薬として許容される担体を含む医薬組成物。
- 薬物として使用するための、配列番号1の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1のその他のアミノ酸残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられているヒト第VII凝固因子変異型。
- 薬物として使用するための、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型。
- 出血症状の治療又は正常な止血系の増強のための薬物の製造のための;配列番号1の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1のその他のアミノ酸残基が、核酸構築物によりコードしうるアミノ酸残基により置き換えられているヒト第VII凝固因子変異型の使用。
- 出血症状の治療又は正常な止血系の増強のための薬物の製造のための、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型の使用。
- それを必要とする患者に対する治療的に又は予防的に有効量のヒト第VII凝固因子変異型の投与を含む患者における出血症状の治療又は正常な止血系の増強方法であり、ここで上記ヒト第VII凝固因子変異型が配列番号1の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1のその他のアミノ酸残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられているものである上記方法。
- それを必要とする患者に対する治療的又は予防的有効量の、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型の投与を含む患者における出血症状の治療又は正常な止血系の増強方法。
- それを必要とする患者に対する治療的又は予防的有効量のヒト第VII凝固因子変異型の投与を含む患者における出血症状の治療又は予防、あるいは正常な止血系の増強方法であり、ここで上記ヒト第VII凝固因子変異型が配列番号1の305位のLeu残基又は374位のPhe残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられ、かつ、場合によりそのプロテアーゼ・ドメイン内の残りの位置で少なくとも1のその他のアミノ酸残基が、核酸構築物によりコードしうる他のアミノ酸残基により置き換えられているものである上記方法。
- それを必要とする患者に対する治療的又は予防的有効量の、請求項1〜13のいずれか1項に記載のヒト第VII凝固因子変異型を投与することを含む、患者における出血症状の治療又は予防あるいは正常な止血系の増強方法。
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5580560A (en) * | 1989-11-13 | 1996-12-03 | Novo Nordisk A/S | Modified factor VII/VIIa |
| US5788965A (en) * | 1991-02-28 | 1998-08-04 | Novo Nordisk A/S | Modified factor VII |
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2001
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- 2001-05-01 WO PCT/DK2001/000294 patent/WO2001083725A1/en not_active Ceased
- 2001-05-01 JP JP2001580333A patent/JP4455802B2/ja not_active Expired - Fee Related
- 2001-05-01 AT AT01927644T patent/ATE485371T1/de not_active IP Right Cessation
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- 2001-05-01 EP EP01927644A patent/EP1282693B1/en not_active Expired - Lifetime
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|---|---|
| JP4456165B2 (ja) | 2010-04-28 |
| AU2001254624A1 (en) | 2001-11-12 |
| DE60143292D1 (de) | 2010-12-02 |
| JP4455802B2 (ja) | 2010-04-21 |
| EP1282693A1 (en) | 2003-02-12 |
| JP2003531607A (ja) | 2003-10-28 |
| ATE485371T1 (de) | 2010-11-15 |
| EP1282693B1 (en) | 2010-10-20 |
| WO2001083725A1 (en) | 2001-11-08 |
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