JP2022171925A - 組換えadamts13および他のタンパク質を精製する方法ならびにそれらの組成物 - Google Patents
組換えadamts13および他のタンパク質を精製する方法ならびにそれらの組成物 Download PDFInfo
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Abstract
【解決手段】トロンボスポンジン1型モチーフ13を有する組換えジスインテグリン様およびメタロペプチダーゼ(ADAMTS13)タンパク質を、試料から精製するための方法が本明細書に提供される。本方法は、ADAMTS13タンパク質がヒドロキシアパタイトからの溶出液または上清中に現れることを可能にする条件下で、試料をヒドロキシアパタイトとクロマトグラフィにより接触させることによって、ADAMTS13タンパク質を富化することを含む。本方法は、ADAMTS13タンパク質に結合する、混合モード陽イオン交換/疎水性相互作用樹脂によるタンデムクロマトグラフィをさらに含んでもよい。
【選択図】なし
Description
本出願は、2009年7月31日に出願された米国特許仮出願第61/230,308号の利益を主張するものであり、この仮出願は参照によりその全体がこれによって組み込まれ、また我々はこの出願に対する優先権を主張する。
本発明の好ましい実施形態では、例えば以下が提供される:
(項目1)
トロンボスポンジン1型モチーフ13を有する組換えジスインテグリン様およびメタロペプチダーゼ(ADAMTS13)タンパク質を、ADAMTS13タンパク質および非ADAMTS13不純物を含む試料から精製するための方法であって、前記方法は、前記ADAMTS13タンパク質がヒドロキシアパタイトからの溶出液または上清中に現れることを可能にする条件下で、前記試料を前記ヒドロキシアパタイトとクロマトグラフィにより接触させることを含む、方法。
(項目2)
前記溶出液を、前記ADAMTS13タンパク質に結合する陽イオン交換/疎水性相互作用樹脂と、クロマトグラフィにより接触させることをさらに含む、項目1に記載の方法。
(項目3)
前記ヒドロキシアパタイトとのクロマトグラフィによる接触の前に、前記試料を、陰イオン交換樹脂とクロマトグラフィにより接触させることと、前記ADAMTS13タンパク質を、前記陰イオン交換樹脂から溶出することと、をさらに含む、項目1または2に記載の方法。
(項目4)
前記試料中の前記ADAMTS13タンパク質を限外濾過によって濃縮することと、前記ヒドロキシアパタイトとのクロマトグラフィによる接触の前に、前記ADAMTS13タンパク質を、ダイアフィルトレーション交換によって、カルシウムイオンおよび亜鉛イオンを含む緩衝液中に安定化することと、をさらに含む、項目1または2に記載の方法。(項目5)
前記ヒドロキシアパタイトまたは前記陽イオン交換/疎水性相互作用樹脂との接触に続いて、緩衝液伝導率を減少させることによって、前記ADAMTS13タンパク質を陽イオン交換のために調製するステップをさらに含む、項目2に記載の方法。
(項目6)
前記調製するステップは、限外濾過/ダイアフィルトレーションによって行われる、項目5に記載の方法。
(項目7)
前記調製するステップは、透析によって行われ、前記透析は、単一の透析モジュールへの2回以下の通過からなる、項目5に記載の方法。
(項目8)
前記調製するステップは、ゲル濾過によって行われる、項目5に記載の方法。
(項目9)
前記ADAMTS13タンパク質を、少なくとも1つのウイルス不活性化ステップに供することをさらに含む、項目1、2、または5のいずれか1項に記載の方法。
(項目10)
前記ウイルス不活性化ステップは、非イオン性界面活性剤および有機溶媒を含む溶媒-界面活性剤混合物を、前記ADAMTS13タンパク質に添加することを含む、項目9に記載の方法。
(項目11)
前記ADAMTS13タンパク質は、固定化される、項目10に記載の方法。
(項目12)
前記ADAMTS13タンパク質は、陽イオン交換樹脂上に固定化される、項目11に記載の方法。
(項目13)
前記溶媒-界面活性剤混合物は、1%のTRITONX-100、0.3%のリン酸トリ‐N‐ブチル、および0.3%のTWEEN80を含む、項目10に記載の方法。
(項目14)
前記ウイルス不活性化ステップは、前記ADAMTS13タンパク質をナノフィルタで濾過して、ウイルスおよび/またはウイルス粒子を除去することを含む、項目9に記載の方法。
(項目15)
前記ウイルス不活性化ステップは、前記調製するステップの後に行われる、項目9に記載の方法。
(項目16)
前記ADAMTS13タンパク質を、勾配溶出を用いて前記樹脂から溶出することをさらに含み、前記勾配溶出は、低塩含有量を有する第1の緩衝液およびより高い塩含有量を有する第2の緩衝液を用いる、項目12に記載の方法。
(項目17)
前記ADAMTS13タンパク質を、ステップ溶出を用いて前記樹脂から溶出することをさらに含む、項目12に記載の方法。
(項目18)
前記ステップ溶出は、前記ADAMTS13タンパク質を、保存緩衝液により前記樹脂から溶出することを含む、項目17に記載の方法。
(項目19)
前記保存緩衝液は、7.0超のpHを有し、10mM未満のカルシウムイオン、緩衝化合物、0.05%の非イオン性界面活性剤、および塩を含む、項目18に記載の方法。
(項目20)
後続の濃縮または緩衝液交換ステップが存在しない、項目18に記載の方法。
(項目21)
項目1、2、または5のいずれか1項に記載の方法に従って調製される組換えADAMTS13タンパク質を含む、組成物。
(項目22)
項目12に記載の方法に従って調製される組換えADAMTS13タンパク質を含む、組成物。
(項目23)
タンパク質試料中のウイルス汚染物質を不活性化するための方法であって、前記方法は、
前記タンパク質を支持体上に固定化することと、
前記固定化されたタンパク質を、非イオン性界面活性剤および有機溶媒を含む溶媒-界面活性剤混合物で処理することと、を含む、方法。
(項目24)
前記タンパク質は、ADAMTS13、Advate、第VIIa因子、第IX因子、フォンヴィレブランド因子、および抗MIF抗体から選択される少なくとも1つである、項目23に記載の方法。
(項目25)
前記支持体は、クロマトグラフ用樹脂である、項目23に記載の方法。
(項目26)
前記溶媒-界面活性剤混合物は、1%のTRITONX-100、0.3%のリン酸トリ‐N‐ブチル、および0.3%のポリソルベート80を含む、項目23に記載の方法。(項目27)
前記溶媒-界面活性剤混合物処理は、30分間~1時間継続する、項目23に記載の方法。
(項目28)
前記タンパク質を、保存緩衝液により前記支持体から溶出することをさらに含む、項目23に記載の方法。
(項目29)
前記保存緩衝液は、7.0超のpHを有し、10mM未満のカルシウムイオン、緩衝化合物、0.05%の非イオン性界面活性剤、および塩を含む、項目28に記載の方法。
(項目30)
後続の濃縮または緩衝液交換ステップが存在しない、項目28に記載の方法。
protease and method of assaying the activity」と題する米国特許公開第20070065895号、ならびに「Method for Detection of Condition in Consciousness Disorder Patient and Kit for the Detection」と題する欧州出願第1990421A1号を参照されたく、これらは、ADAMTS13ポリペプチドおよびその誘導体および/または断片に対するアッセイに関して、参照により本明細書に組み込まれる)。
Flow(GE Healthcare,Piscataway,NJ)、ANX-Sepharose Fast Flow low sub(GE Healthcare)、DEAE-Sepharose Fast Flow(GE Healthcare)、DEAE-Toyopearl(Tosoh Bioscience LLC,Grove City,OH)、QAE-Toyopearl(Tosoh Bioscience LLC)、POROS(登録商標)Q(Applied Biosystems,Foster City,CA)、POROS(登録商標)50D(Applied Biosystems)、POROS(登録商標)50PI(Applied Biosystems)、Convective Interaction Media(CIM(登録商標);BIA Separation)、Fractogel-DMAE(Capitol Scientific Inc.,Austin,TX)、Fractogel EMD-TMAE(Capital Scientific Inc.,Austin,TX)、Matrex Cellufine DEAE(Chisso Corp.,Rye,NY)等が挙げられる。
Kasei)を使用したナノ濾過によって実施することができる。いくつかの実施形態では、ナノフィルタの汚染を防止するために、前置フィルタが使用され、例えば、約2μMのフィルタ、または0.2μPVDFもしくはPES膜が使用されてもよい。
chemistry of the Hollowfibers,Edwards Lifesciences,Unterschleiheim,Germany)等の血液透析モジュールを含む、ダイアライザ機械を使用して実施される。概して、約5Lの試料に対して、約2m2のフィルタ面積が使用され、試料緩衝液および透析緩衝液は、相互に対して逆流で流される。いくつかの実施形態では、透析は、単一の透析モジュールへの2回以下の通過からなる。「単一の透析モジュール」とは、透析が実施される1つのユニットまたは構造を意味する。透析モジュールは、概して、それぞれが入口および出口ポートアクセスを有する、管腔および毛細管外の2つの別々の流動チャンバを形成するように管状筐体中に入れられた、端部が開口した中空糸膜の束を備える。半透過性中空糸膜は、2つのチャンバを分離し、溶質のサイズおよび濃度勾配に基づき、通過を選択的に可能にする一方で、他の溶質が2つのチャンバ間を通過することを制限する。逆流モードでモジュールを操作することによって、膜を通過する溶質は、素早く流され、大量の透析液中へと希釈され(「スイープ」)、可能な限り最大の濃度勾配を維持する。したがって、透析は、単一の透析モジュールへの単回通過のスイープで実施されてもよい。
SE Hicap(Merck),Cellufine Sulfate(Chisso)、CM and SP Trisacryl(Pall)、CM and S HyperD(Pall)、Mustang S(Pall)、S and CM Sepharose CL(GE Healthcare)、S and CM Sepharose FF(GE Healthcare)、S and CM CAPTO(登録商標)(GE Healthcare)、MonoS(GE Healthcare)、Source S(GE Healthcare)等が挙げられる。
S上の陽イオン交換クロマトグラフィの組み合わせである。図2Bに示すように、変化形Bは、段階希釈を用いるが、ウイルス不活性化が先行しない、Poros 50S上の陽イオン交換クロマトグラフィを伴う。変化形AおよびBの両方を、表9に概説する手順に従って実施することができる。
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- 明細書に記載の組成物または方法。
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