JP6798882B2 - TNFR及びFc領域を含む融合タンパク質の液体製剤 - Google Patents
TNFR及びFc領域を含む融合タンパク質の液体製剤 Download PDFInfo
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- JP6798882B2 JP6798882B2 JP2016534940A JP2016534940A JP6798882B2 JP 6798882 B2 JP6798882 B2 JP 6798882B2 JP 2016534940 A JP2016534940 A JP 2016534940A JP 2016534940 A JP2016534940 A JP 2016534940A JP 6798882 B2 JP6798882 B2 JP 6798882B2
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Description
本発明は、TNFR−Fc融合タンパク質及び安定化剤を含む液体製剤であって、該融合タンパク質がTNFR(腫瘍壊死因子受容体)又はそれらの断片及び免疫グロブリンFc領域を含み、かつ、該安定化剤が、プロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸、緩衝液、ならびに塩化ナトリウム(NaCl)及びスクロースを含む等張化剤を含む液体製剤に関し、そして、該液体製剤の調製方法に関する。
一般に、タンパク質薬剤の化学的及び物理的変性は、好ましくない温度、せん断応力、振動、凍結融解、UV照射、過度なpH変化、有機溶媒、微生物汚染などによって容易に起こり得る。化学的変性は、タンパク質を構成するアミノ酸、及びタンパク質を含む溶媒の条件(塩、pH及び温度)によって影響を受ける、二量体の解離、酸化、脱アミド化、異性化、及び重合を含む。物理的変性は、タンパク質含有の周囲の環境、例えば溶媒、複雑なタンパク質構造、例えば電荷分布、及び熱熱安定性によって変化する、タンパク質表面上の疎水性パッチによって影響を受ける、三次構造の喪失、共有結合的/非共有結合的な凝集、及び単量体の接着を含む。
技術的問題
従って、本発明者らは、エタネルセプトの活性を安定に維持するができる液体製剤を調製するための方法を開発するために多くの努力をした。本発明は、単一アミノ酸又は混合アミノ酸を含む既知の安定化剤に用いられる濃度よりも低い濃度で用いられる場合であっても、プロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸を含む安定化剤が溶液中のエタネルセプトの安定化に顕著な効果を示すということを与え、それによって本発明を完成する。
本発明の目的は、TNFR−Fc融合タンパク質及び安定化剤を含む安定な液体製剤であって、該TNFR−Fc融合タンパク質がTNFR(腫瘍壊死因子受容体)又はそれらの断片及び免疫グロブリンFc領域を含む融合タンパク質であり、かつ、該安定化剤がプロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸、緩衝液、ならびに、等張化剤、好ましくは塩化ナトリウム(NaCl)及びスクロースを含む等張化剤を含む、液体製剤を提供することである。
TNFR−Fc融合タンパク質(エタネルセプト)の長期間の保存が可能であり、かつ、特定の保存条件が必要とされないため、本発明に係る液体製剤は優れた保存安定性を与える。該製剤が単純であっても、本発明の液体製剤は優れた保存安定性を示すので、それは他の安定化され又は凍結乾燥された製剤よりも経済的であり、したがって該製剤は、TNFR−Fc融合タンパク質(エタネルセプト)による治療に効果的に使用することができる。
上記目的を達成するための1つの態様では、本発明は、TNFR−Fc融合タンパク質及び安定化剤を含む液体製剤を提供し、該融合タンパク質はTNFR(腫瘍壊死因子受容体)又はそれらの断片及び免疫グロブリンFc領域を含み、かつ、該安定化剤は、プロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸、緩衝液、ならびに、等張化剤、好ましくは塩化ナトリウム(NaCl)及びスクロースを含む等張化剤を含む。
−pH6.3で、50mg/mLのTNFR−Fc融合タンパク質、25mMのクエン酸−リン酸緩衝液、115mMのNaCl、0.5%のスクロース、6mMのプロリン及び0.09mMのヒスチジンを含む液体製剤(表7の製剤3)。
−pH6.3で、50mg/mLのTNFR−Fc融合タンパク質、25mMのクエン酸−リン酸緩衝液、130mMのNaCl、0.1%のスクロース、6mMのプロリン及び0.09mMのヒスチジンを含む液体製剤(表7の製剤7)。
−pH6.3で、50mg/mLのTNFR−Fc融合タンパク質、25mMのクエン酸−リン酸緩衝液、100mMのNaCl、1.0%のスクロース、10mMのプロリン、5mMのヒスチジン、及び10mMのグルタミン酸を含む液体製剤(表1の製剤10)。
a)TNFR−Fc融合タンパク質を調製し;そして
b)ステップa)で調製されたTNFR−Fc融合タンパク質を、プロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸を含む安定化剤、緩衝液、ならびに塩化ナトリウム(NaCl)及びスクロースを含む等張化剤と混合すること、
を含む、方法である。
以下、実施例を参照して本発明をより詳細に説明することとする。しかしながら、これらの実施例は例示の目的のためのみであり、本発明はこれらの実施例によって限定されることを意図しない。
TNFR−Fc融合タンパク質、エタネルセプト(組換えp75 sTNFR:Fc融合タンパク質)の液体製剤を安定化するために、アミノ酸又はアミノ酸の混合物を安定化剤として使用し、又は、等張化剤を調節して安定化効果を調べた。すなわち、安定化剤としてプロリン、又はプロリン及びヒスチジンの混合物を使用することによって、あるいは、等張化剤としてNaCl及びスクロースの濃度を調節することによって、液体製剤を調製した。
実施例1で調製された液体製剤の安定性を調べるために、各製剤を、1、2、4及び8週間、25℃及び40℃の条件下で保存し、そしてその後エタネルセプトの残量を、サイズ排除高速液体クロマトグラフィー(SE−HPLC)及び疎水性相互作用高速液体クロマトグラフィー(HIC−HPLC)によって測定した。
実施例1及び2の実験によってその安定性向上が確認された、プロリン及びヒスチジンならびにそれらの混合物から選択される1又は数個のアミノ酸を含むエタネルセプト液体製剤を、6ヶ月間、長期間の保存条件下で、安定性試験に供した。
アミノ酸の混合物の組成比によって、実施例1から3において従来のエタネルセプト製剤(アルギニンを単独で含む単一製剤)と比較して、それらの製剤が向上された安定性を有すると確認された、プロリン及びヒスチジンの混合物を含むエタネルセプト液体製剤の安定性を調べるために、アミノ酸の混合物の組成比による安定化効果を調べた。すなわち、種々の濃度で安定化剤としてプロリン及びヒスチジンを混合することにより、そして、等張化剤としてスクロース及び塩化ナトリウムの濃度を調節することにより、液体製剤を調製した。
Claims (19)
- エタネルセプト、プロリンとヒスチジンとの混合物、緩衝液及び等張化剤を含む液体製剤であって、前記製剤は、プロリンを10mM未満の濃度で、及びヒスチジンを5mM未満の濃度で含み、ここで、前記緩衝液の濃度は、10から35mMの範囲内であり、かつ前記緩衝液は、クエン酸−リン酸又はリン酸緩衝液であり、ここで、前記等張化剤は、塩化ナトリウム(NaCl)を105mMから150mMの濃度で、及びスクロースを総組成の0.01から1.5重量%の量で含む、液体製剤。
- 前記等張化剤が液体製剤に280から350mOsmの浸透圧を維持させる、請求項1に記載の液体製剤。
- 液体製剤中のエタネルセプトの濃度が、20から55mg/mLの範囲内である、請求項1又は2に記載の液体製剤。
- 液体製剤のpHが6.0から6.6の範囲内である、請求項1から3のいずれか一項に記載の液体製剤。
- 前記製剤が、プロリンを9mM未満の濃度で、又は、ヒスチジンを0.1mM未満の濃度で含む、請求項1から4のいずれか一項に記載の液体製剤。
- プロリンが1mMから9mMの濃度で存在し、かつ、ヒスチジンが0.1mM未満の濃度で存在する、請求項1から4のいずれか一項に記載の液体製剤。
- プロリンが1mMから9mMの濃度で存在し、かつ、ヒスチジンが0.01から0.09mMの濃度で存在する、請求項6に記載の液体製剤。
- プロリンが6mMの濃度で存在し、かつ、ヒスチジンが0.09mMの濃度で存在する、請求項7に記載の液体製剤。
- グルタミン酸を1mMから20mMの濃度でさらに含む、請求項1から4のいずれか一項に記載の液体製剤。
- グルタミン酸が10から15mMの濃度で存在する、請求項9に記載の液体製剤。
- 薬学的有効量でのエタネルセプトを含む、請求項1から10のいずれか一項に記載の液体製剤であって、前記緩衝液が、クエン酸−リン酸緩衝液である、液体製剤。
- 液体製剤が、30から55mg/mLのエタネルセプト、及び10から35mMのクエン酸−リン酸緩衝液、105から120mMのNaCl、0.5から1.5%のスクロース、1から9mMのプロリン及び0.01から0.1mMのヒスチジンを含み、かつ、6.3のpHを有する、請求項11に記載の液体製剤。
- 液体製剤が、50mg/mLのエタネルセプト、25mMのクエン酸−リン酸緩衝液、115mMのNaCl、1%のスクロース、6mMのプロリン、及び0.09mMのヒスチジンを含み、かつ、6.3のpHを有する、請求項12に記載の液体製剤。
- 液体製剤が、30から55mg/mLのエタネルセプト、及び10から35mMのクエン酸−リン酸緩衝液、120から150mMのNaCl、0.01から0.5%のスクロース、1から9mMのプロリン及び0.01から0.1mMのヒスチジンを含み、かつ、6.3のpHを有する、請求項11に記載の液体製剤。
- 液体製剤が、50mg/mLのエタネルセプト、25mMのクエン酸−リン酸緩衝液、130mMのNaCl、0.1%のスクロース、6mMのプロリン、及び0.09mMのヒスチジンを安定化剤として含み、かつ、6.3のpHを有する、請求項14に記載の液体製剤。
- 液体製剤が、30から55mg/mLのエタネルセプト、10から35mMのクエン酸−リン酸緩衝液、0.1から1.5%のスクロース、5から15mMのグルタミン酸塩、及び1から10mMのプロリンを含み、かつ、6.3のpHを有する、グルタミン酸をさらに含む、請求項11に記載の液体製剤。
- 液体製剤が、50mg/mLのエタネルセプト、25mMのクエン酸−リン酸緩衝液、1%のスクロース、10mMのグルタミン酸塩、及び10mMのプロリンを含み、かつ、6.3のpHを有する、請求項16に記載の液体製剤。
- 請求項1から17のいずれか一項のエタネルセプトを含む液体製剤を調製するための方法であって、以下:
a)エタネルセプトを調製し;そして
b)ステップa)で調製されたエタネルセプトを、プロリン及びヒスチジンからなる群から選択される1又は数個のアミノ酸を含む安定化剤、緩衝液、ならびに塩化ナトリウム(NaCl)及びスクロースを含む等張化剤と混合すること、
を含む、方法。 - ステップb)での混合が、i)安定化剤、緩衝液、及び等張化剤を含む溶液を調製すること、ならびに、ii)エタネルセプトがステップa)で調製される溶液を、ステップi)の溶液と交換すること、を含む、請求項18に記載の方法。
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