JP5376573B2 - Vegfアンタゴニスト製剤 - Google Patents
Vegfアンタゴニスト製剤 Download PDFInfo
- Publication number
- JP5376573B2 JP5376573B2 JP2008503191A JP2008503191A JP5376573B2 JP 5376573 B2 JP5376573 B2 JP 5376573B2 JP 2008503191 A JP2008503191 A JP 2008503191A JP 2008503191 A JP2008503191 A JP 2008503191A JP 5376573 B2 JP5376573 B2 JP 5376573B2
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- JP
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- Prior art keywords
- formulation
- vegf
- fusion protein
- lyophilized
- sucrose
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
- A61K39/39591—Stabilisation, fragmentation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
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Description
本発明は、血管内皮増殖因子(VEGF)を阻害することが可能な物質を含む薬学的製剤、およびそのような製剤を作製し使用するための方法を対象とする。本発明は、増大した安定性を有する薬学的製剤を含む。
血管内皮増殖因子(VEGF)発現は、腫瘍血管新生の重要な媒介物質としてのその役割と一致して、ヒト癌においてほぼ遍在する。VEGF機能の遮断は、分子またはそのVEGFR-2受容体への結合によって、複数の異なる異種移植モデルにおいて移植された腫瘍細胞の増殖を阻害する(例えばGerber et al. (2000) Cancer Res. 60:6253-6258を参照されたい)。可溶性VEGF特異的融合タンパク質アンタゴニストは、「VEGFトラップ」と称して記載されている(Kim et al. (2002) Proc. Natl. Acad. Sci. USA 99:11399-404; Holash et al. (2002) Proc. Natl. Acad. Sci. USA 99:11393-8)。
VEGF特異的融合タンパク質アンタゴニストの安定な製剤が、本明細書において提供される。本発明の薬学的に許容される製剤は、VEGF「トラップ」アンタゴニストを薬学的に許容される担体と共に含む。特定の態様において、液体製剤およびフリーズドライ製剤、または凍結乾燥製剤が提供される。
本発明は、特定の方法および記載した実験条件に限定されず、そのような方法および条件は変化してもよい。また、本発明の範囲は添付の特許請求の範囲によってのみ限定されるため、本明細書で使用される専門用語は、単に特定の態様を説明することを目的とし、指示しない限り限定することを意図したものではないことが理解されるべきである。
タンパク質を含む製剤の安全な取り扱いおよび投与は、薬学的に製剤化する人にとって大きな挑戦を意味する。タンパク質は、安定性の問題を示す固有の化学的および物理的特性を備えている:タンパク質毎に様々な分解経路が存在し、それは化学的および物理的不安定性の両方を意味する。化学的不安定性は、脱アミノ化、凝集、ペプチド主鎖のクリッピング、およびメチオニン残基の酸化を含む。物理的不安定性は、例えば凝集を含む多くの現象を包含する。
「担体」という用語は、それを用いて組成物を投与する、希釈剤、アジュバント、付形剤、または賦形剤を含む。担体は、例えば水、および例えばピーナッツオイル、大豆油、鉱油、ゴマ油などの石油、動物起源、植物起源、もしくは合成起源の油を含む油のような、滅菌した液体を含むことができる。
VEGFアンタゴニストは、血管内皮増殖因子(VEGF)の生物作用をブロックするかまたは阻害することが可能な化合物であり、かつVEGFをトラップすることが可能な融合タンパク質を含む。好ましい態様において、VEGFアンタゴニストはSEQ ID NO:2または4、より好ましくはSEQ ID NO:4の融合タンパク質である。特定の態様において、VEGFアンタゴニストはCHO細胞のような哺乳動物細胞株において発現し、かつ翻訳後に修飾され得る。特定の態様において、融合タンパク質はSEQ ID NO:4のアミノ酸27〜457を含み、かつAsn残基62、94、149、222、および308でグリコシル化される。
本発明の一つの局面において、VEGF特異的融合タンパク質アンタゴニストを含む薬学的に許容される製剤が提供され、製剤はフリーズドライまたは凍結乾燥製剤である。凍結乾燥製剤は、溶液、懸濁液、乳濁液、または投与もしくは使用に適した任意の他の形状へと再組成することができる。凍結乾燥製剤は典型的に、まず液体として調製し、次いで凍結して凍結乾燥する。凍結乾燥前の総液体容量は、凍結乾燥製剤の最終的な再組成容量より少ないか、それに等しいか、またはそれを上回ることが可能である。凍結乾燥プロセスは当業者に周知であり、典型的に、管理された条件下で凍結した製剤から水を昇華することを含む。
一つの局面において、本発明は、VEGF特異的融合タンパク質アンタゴニストを含む安定な薬学的に許容される製剤を提供し、製剤は液体製剤である。好ましくは、液体製剤は薬学的有効量の融合タンパク質を含む。製剤は1つまたは複数の薬学的に許容される担体、緩衝液、充填剤、安定剤、保存剤、および/または付形剤もまた含むことができる。薬学的に許容される液体製剤の例には、薬学的有効量のVEGF特異的融合タンパク質アンタゴニスト、緩衝液、共溶媒、および1つまたは複数の安定剤が含まれる。
本発明の方法を記載する前に、本発明は、記載する特定の方法および実験条件に限定されるものではなく、方法および実験は変更できることが理解されるべきである。本発明の範囲は添付の特許請求の範囲にのみ限定されることから、本明細書で使用される専門用語は、単に特定の態様を説明することを目的としており、限定することを意図しないこともまた理解されるべきである。
10 mM リン酸塩、50 mM NaCl、0.1%ポリソルベート20、20%スクロース、および50 mg/ml VEGFトラップ(SEQ ID NO:4)を含む、pH 6.25の液体製剤を5℃で保管し、試料は3、6、9、12、18、および24ヶ月で試験した。安定性をSE-HPLCによって測定した。表1に示した結果は、12および24ヶ月で、それぞれ98.6%および98.3%のVEGFトラップタンパク質が無傷で(分解されずに)残っていることを示す。濁度はOD405 nmで測定し;サイズ排除HPLCにより、回収したタンパク質の割合を測定した。
10 mM リン酸塩、50 mM NaCl、0.1%ポリソルベート20、20%スクロース、および75 mg/ml VEGFトラップ(SEQ ID NO:4)を含む、pH 6.25の液体製剤を5℃で保管し、試料は0、1、2.3、3、9、12、および15ヶ月で試験した。安定性の結果を表3に示す。
10 mM リン酸塩、50 mM NaCl、0.1%ポリソルベート20、20%スクロース、および100 mg/ml VEGFトラップ(SEQ ID NO:4)を含む、pH 6.25の液体製剤を5℃で保管し、試料は0、1、2.3、3、9、12、および15ヶ月で試験した。安定性の結果を表5に示す。
一つの態様において、本発明は、5 mMリン酸塩、5 mMクエン酸塩、100 mM NaCl、0.1%ポリソルベート20、20%スクロース、25 mg/mlのVEGFトラップタンパク質を含む、pH6.0の安定な液体VEGF結合融合タンパク質(VEGFトラップ)製剤を提供する。製剤は、皮下に送達するか、または希釈して、静脈内注入により送達するかのいずれかが可能である。本製剤の高い重量オスモル濃度のため、製剤を3倍に希釈して、静脈内投与のための等浸透圧溶液を達成する。安定性の研究は、2〜8℃で3年間保管した後、約1%を下回る分解が検出されたことを示した。
再組成した凍結乾燥製剤の安定性は、6ヵ月の期間にわたって測定された。凍結乾燥前の製剤は、10 mMヒスチジン、1.5%PEG 3350、2.5%スクロース、0.75%グリシン、および50 mg/mlVEGFトラップタンパク質を含んだ。凍結乾燥後、再組成した製剤は、20 mMヒスチジン、3%PEG 3350、5%スクロース、1.5%グリシン、および100 mg/ml VEGFトラップタンパク質(SEQ ID NO:4)を含んだ。結果を表8に示す。活性は、マウスBaf/3 VEGFR1/EpoR細胞株に対するヒトVEGFの生物学的効果を阻害するVEGFトラップの能力を直接測定する、細胞に基づくバイオアッセイにおいて測定した。したがって、本バイオアッセイは、タンパク質の生物活性を直接測定する。結果は、相対効力の割合として表す(試験試料IC50/参照VEGF IC50標準×100)。VEGFトラップへのVEGFの結合親和性は、VEGFおよび様々な濃度のVEGFトラップを含む平衡混合物中の遊離VEGFを特異的に測定する高感度ELISAを用いて測定する。結果は、相対結合の割合として表す(試験試料のIC50/参照のIC50×100)。測定したpHは、6.3〜6.5の範囲であった。全ての溶液は、視覚的に透明であった。回収したVEGFトラップの濃度は、紫外分光光度計によりmg/mlとしてA280 nmで測定した。天然の立体構造における回収したVEGFトラップの割合(主要ピーク純度)を、SE-HPLCによって測定した。
Claims (2)
- pH6.0で、5 mMリン酸緩衝液、5 mMクエン酸緩衝液、100 mM NaCl、20%スクロース、0.1%ポリソルベート20および25 mg/mlのSEQ ID NO:4の27〜457位のアミノ酸配列からなる融合タンパク質である血管内皮増殖因子(VEGF)特異的アンタゴニストを含み、2〜8℃の保存において、該融合タンパク質が少なくとも75%の生物活性を保持する、安定な液体製剤:
ここで、該融合タンパク質の生物活性は、マウスBaf/3 VEGFR1/EpoR細胞株に対するヒトVEGFの生物学的効果を阻害する該融合タンパク質の能力を測定することにより決定される。 - 5℃の保存において、該融合タンパク質が少なくとも75%の生物活性を保持する、請求項1記載の安定な液体製剤。
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Application Number | Priority Date | Filing Date | Title |
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US66512505P | 2005-03-25 | 2005-03-25 | |
US60/665,125 | 2005-03-25 | ||
PCT/US2006/010600 WO2006104852A2 (en) | 2005-03-25 | 2006-03-22 | Vegf antagonist formulations |
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JP2012282406A Division JP5752671B2 (ja) | 2005-03-25 | 2012-12-26 | Vegfアンタゴニスト製剤 |
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