JP5960606B2 - 伸長α鎖を有するフィブリノーゲンが濃縮されたフィブリノーゲン調製物 - Google Patents
伸長α鎖を有するフィブリノーゲンが濃縮されたフィブリノーゲン調製物 Download PDFInfo
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- JP5960606B2 JP5960606B2 JP2012547516A JP2012547516A JP5960606B2 JP 5960606 B2 JP5960606 B2 JP 5960606B2 JP 2012547516 A JP2012547516 A JP 2012547516A JP 2012547516 A JP2012547516 A JP 2012547516A JP 5960606 B2 JP5960606 B2 JP 5960606B2
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- fibrinogen
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Description
本発明は、少なくとも95%(w/w)のフィブリノーゲンを含むフィブリノーゲン調製物であって、ここでこのフィブリノーゲンのうち少なくとも10%がFib420の形態であるフィブリノーゲン調製物に関する。
−核酸配列であってフィブリノーゲンのα伸長ポリペプチド鎖をコードする核酸配列を含む発現ベクターを提供する工程と;
−この発現ベクターを用いて真核生物細胞を形質転換する工程と;
−フィブリノーゲンのα伸長ポリペプチド鎖をコードする核酸配列の発現を可能にするような条件下でこの形質転換された真核生物細胞を維持する工程と;
を包含する方法によって調製される。
実施例1
最適化cDNA構築物の調製
α−ext Fib(Fib420)、Bβおよびγのヒトフィブリノーゲンポリペプチド鎖をコードするcDNAを、GeneArt(Regensburg,Germany)によるコドン最適化形式で合成した:(i)cis−作用性部位(スプライス部位、ポリ(A)シグナル)を取り除いた;(ii)Aα鎖の反復配列を改変した;(iii)GC含量をmRNA半減期の伸長のために増大した;(iv)コドン用法は、CHO(コドン適応指数(codon adaption index)−CAI−>0.95)に適合した。
α−ext Fib(配列番号5)、Bβ(配列番号6)およびγ(配列番号6)鎖のコドン最適化cDNAを、pcDNA3.1誘導体中にサブクローニングした。pcDNA3.1(+)neo中のAα伸長(Fib420)、pcDNA3.1(+)hygro中のBβ鎖およびpcDNA3.1(−)hygro中のγ鎖(Invitrogen,Carsbad,USA)。
組み換えヒトα−extFibを発現するPER.C6細胞株
組み換えヒトフィブリノーゲンを産生するPER.C6細胞株の生成は、PCT/EP2009/058754において以前に記載されるのと同様である。要約すれば、細胞をMAb培地中において懸濁物中で培養して、AMAXAヌクレオフェクションデバイス(promegaA−27)を用い、そしてヒトフィブリノーゲンタンパク質の3つの異なる鎖(Aα−ext、Bβおよびγ鎖)をコードしており、かつ最適化cDNA鎖(それぞれ、配列番号5、配列番号6および配列番号7)を含んでいる3つのベクターを備える、NucleofectorキットTを用いて、トランスフェクトした。
PER.C6細胞培養培地からのα伸長フィブリノーゲンの精製
組み換えヒトα伸長フィブリノーゲンは、標準的方法によって細胞培養上清から精製した。要するに、(NH4)2SO4を培養上清に対して40%飽和まで添加して、沈殿物を遠心分離によって収集した。引き続き、沈殿物を、TMAEローディング緩衝液(5mM Tris−HCl pH8.5、0.01% Tween−20)中に溶解し、続いて同じ緩衝液に対して透析した。次いで、このタンパク質溶液を、Fractogel EMD TMAE(m)40〜90μm(3ml)(Merck KGaA,Darmstadt,Germany)Ion Exchange Column上にロードした。組み換えヒトα伸長フィブリノーゲンをその後に、20カラム容積中で0〜1MのNaClの連続塩勾配を用いて溶出した。ピーク画分中の組み換えヒトフィブリノーゲンを、40%飽和まで(NH4)2SO4を添加することによって再度沈殿し、遠心分離によって収集した。最後に、その物質をTBS(50mM Tris−HCl、pH7.4、100mM NaCl)に溶解し、TBSに対して透析して、残留する(NH4)2SO4を除いた。
ROTEM分析
α−ext rhFibおよび血漿由来フィブリノーゲンの凝固時間(CT)、クロット形成時間(CFT)およびクロット硬度を、ROTEM分析を用いて測定した。ROTEM(登録商標)(Pentapharm GmbH,Munich,Germany)とは、ROtation ThromboElastoMetryを表す。この技術は、使い捨てキュベット中の(血液)サンプル中に浸漬された回転軸を利用する。異なる凝固条件下の弾力性の変化は、軸の回転の変化を生じ、この変化が、機械的なクロットのパラメーターを反映しているトロンボエラストグラムで可視化される(例えば、Luddington R.J.(2005)Clin Lab Haematol.2005 27(2):81を参照のこと)。
α−ext rhFibおよび血漿由来のフィブリノーゲンのプラスミン消化
精製組み換えヒトα−ext rhFibの線維素原溶解を、プラスミンでのインキュベーションによって試験した。要するに、フィブリノーゲンをTBST(50mM Tris−HCl、pH7.4,100mM NaCl、0.01% Tween−20)中に希釈し、CaCl2またはEDTAを添加し(5mMの最終濃度)、プラスミンを添加し(10nMの最終濃度)、続いて37℃でインキュベーションした。時間中のいくつかのポイントで、サンプルを採取して、SDS−PAGEサンプル緩衝液とただちに混合した(NuPAGE LDSサンプル緩衝液、Invitrogen,カタログ番号NP00007)。次いで、サンプルを、非還元SDS−PAGEゲル(NuPAGE3〜8% Tris−Acetate,Invitrogen,カタログ番号WG1602)上でサイズ分離に供した。タンパク質は、クーマシー染色(SimplyBlue SafeStain,Invitrogen,カタログ番号LC6060)によって可視化した。
Claims (12)
- 急性出血症状、過剰線維素溶解、フィブリノーゲン欠損症または他の出血障害の処置のための方法における使用のための、少なくとも95%(w/w)のフィブリノーゲンを含み、前記フィブリノーゲンはFib420の形態であり、前記Fib420は組み換え技術により生産されることを特徴とする、フィブリノーゲン調製物。
- 第XIII因子を含まない、請求項1に記載のフィブリノーゲン調製物。
- 請求項1または2に記載のフィブリノーゲン調製物、および薬学的に許容される担体、希釈剤または賦形剤を含んでいる、薬学的組成物。
- 前記組成物が、組織付着を容易にするか、創傷治癒を改善するか、または静脈内投与のために適切である、請求項3に記載の薬学的組成物。
- 前記薬学的組成物が、フィブリンシーラントまたは局所止血薬である、請求項3または4に記載の薬学的組成物。
- さらにトロンビンを含む、請求項3〜5に記載の薬学的組成物。
- 乾燥型の請求項3〜6に記載の薬学的組成物。
- 急性出血症状、過剰線維素溶解、フィブリノーゲン欠損症または他の出血障害の処置のための医薬の調製のための、請求項1または2に記載のフィブリノーゲン調製物または請求項3〜7に記載の薬学的組成物の使用。
- 請求項1または2に記載のFib420フィブリノーゲン調製物を調製するための方法であって:
−フィブリノーゲンのα伸長ポリペプチド鎖をコードするヌクレオチド配列を含む発現ベクターを提供することと;
−前記発現ベクターを用いて哺乳動物細胞を形質転換することと;
−フィブリノーゲンのα伸長ポリペプチド鎖をコードするヌクレオチド配列の発現を可能にするような条件下で前記哺乳動物細胞を維持することと、
を包含する、方法。 - フィブリノーゲンのα伸長ポリペプチド鎖をコードする前記ヌクレオチド配列が、哺乳動物細胞における発現のために最適化された配列である、請求項9に記載の方法。
- 前記哺乳動物細胞が、ヒト細胞である、請求項9または10に記載の方法。
- 前記哺乳動物細胞が、PER.C6細胞である、請求項9または10に記載の方法。
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PCT/EP2011/050191 WO2011083153A2 (en) | 2010-01-08 | 2011-01-07 | Fibrinogen preparations enriched in fibrinogen with an extended alpha chain |
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EP2521538B1 (en) * | 2010-01-08 | 2018-10-24 | Mallinckrodt Pharma IP Trading D.A.C. | Dry powder fibrin sealant |
US10188965B2 (en) | 2012-12-05 | 2019-01-29 | Csl Behring Gmbh | Hydrophobic charge induction chromatographic depletion of a protein from a solution |
US20140154233A1 (en) * | 2012-12-05 | 2014-06-05 | Csl Limited | Method of purifying therapeutic proteins |
WO2017120220A1 (en) * | 2016-01-04 | 2017-07-13 | Adepthera Llc | Peptide analogs |
EP3618853B1 (en) | 2018-04-24 | 2020-09-09 | Fibriant B.V. | Fibrinogen gamma prime variants for use in treating an infection |
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US5639940A (en) | 1994-03-03 | 1997-06-17 | Pharmaceutical Proteins Ltd. | Production of fibrinogen in transgenic animals |
US5817768A (en) * | 1995-06-07 | 1998-10-06 | The New York Blood Center, Inc. | Monospecific antibodies against a subunit of fibrinogen |
EP0833934B2 (en) * | 1995-06-15 | 2012-08-15 | Crucell Holland B.V. | Packaging systems for human recombinant adenovirus to be used in gene therapy |
US5702715A (en) * | 1995-10-27 | 1997-12-30 | Drying Technology | Reinforced biological sealants |
EP0914096B1 (en) | 1996-05-17 | 2003-08-13 | Elan Drug Delivery Limited | Microparticles and their use in wound therapy |
US6037457A (en) | 1997-01-31 | 2000-03-14 | The University Of North Carolina At Chapel Hill | Method for recombinant fibrinogen production |
US6855544B1 (en) * | 1999-04-15 | 2005-02-15 | Crucell Holland B.V. | Recombinant protein production in a human cell |
NL1020426C2 (nl) * | 2002-04-18 | 2003-10-21 | Tno | Modificatie van de eigenschappen van een fibrinematrix met betrekking tot groei en ingroei van cellen. |
WO2005008251A2 (en) * | 2003-07-11 | 2005-01-27 | Praecis Pharmaceuticals, Inc. | Compositions, kits, and methods for identification, assessment, prevention, and therapy of endometriosis |
US8283137B2 (en) * | 2003-07-29 | 2012-10-09 | Juridical Foundation The Chemo-Sero-Therapeutic Research Institute | Process for producing recombinant fibrinogen highly producing cell and highly producing cell |
US20060155235A1 (en) * | 2004-12-17 | 2006-07-13 | Sawyer Evelyn S | Hemostatic compression bandage |
WO2008135963A2 (en) * | 2007-05-02 | 2008-11-13 | Hemogem Inc. | Fibrinogen for treatment of bleeding in trauma and platelet disorders |
EP3078673A3 (en) * | 2008-07-09 | 2017-02-22 | ProFibrix BV | Recombinant fibrinogen |
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AU2011204557B2 (en) | 2014-08-28 |
US20130011382A1 (en) | 2013-01-10 |
US20160158323A1 (en) | 2016-06-09 |
WO2011083153A3 (en) | 2011-09-09 |
EP2521566A2 (en) | 2012-11-14 |
JP2013516443A (ja) | 2013-05-13 |
CN102724995B (zh) | 2015-02-18 |
EP2521566B1 (en) | 2014-09-03 |
US9694054B2 (en) | 2017-07-04 |
CA2785594C (en) | 2018-04-17 |
US20170266262A1 (en) | 2017-09-21 |
CN102724995A (zh) | 2012-10-10 |
WO2011083153A2 (en) | 2011-07-14 |
US10004787B2 (en) | 2018-06-26 |
DK2521566T3 (en) | 2014-12-08 |
CA2785594A1 (en) | 2011-07-14 |
AU2011204557A1 (en) | 2012-07-19 |
JP2016216476A (ja) | 2016-12-22 |
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