JP5873016B2 - アミノ酸を利用したタンパク質の精製方法 - Google Patents
アミノ酸を利用したタンパク質の精製方法 Download PDFInfo
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- JP5873016B2 JP5873016B2 JP2012521465A JP2012521465A JP5873016B2 JP 5873016 B2 JP5873016 B2 JP 5873016B2 JP 2012521465 A JP2012521465 A JP 2012521465A JP 2012521465 A JP2012521465 A JP 2012521465A JP 5873016 B2 JP5873016 B2 JP 5873016B2
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- C—CHEMISTRY; METALLURGY
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- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
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Description
(1)ProteinAアフィニティークロマトグラフィー工程を含むタンパク質の精製方法であって、ProteinAアフィニティークロマトグラフィー工程に使用する溶出緩衝液の成分そのものがグリシンであるタンパク質の精製方法。
(2)前記緩衝液のグリシン濃度が10〜100mMである(1)に記載の精製方法。
(3)前記緩衝液のpHが2.5〜4.5である(1)または(2)に記載の精製方法。
(4)さらに、少なくとも陽イオン交換クロマトグラフィー工程、陰イオン交換クロマトグラフィー工程、ゲルろ過クロマトグラフィー工程、疎水性クロマトグラフィー工程、ハイドロキシアパタイトクロマトグラフィー工程および混合モードクロマトグラフィー工程から選択されるクロマトグラフィー工程の1以上を含む(1)〜(3)のいずれか1に記載の精製方法。
(5)陽イオン交換クロマトグラフィー工程を、ProteinAアフィニティークロマトグラフィー工程に引き続いて行う(1)〜(4)のいずれか1に記載の精製方法。
(6)陰イオン交換クロマトグラフィー工程を、さらに引き続いて行う(5)に記載の精製方法。
(7)陽イオン交換クロマトグラフィー工程を、ProteinAアフィニティークロマトグラフィー工程及び陰イオン交換クロマトグラフィー工程に引き続いて行う(1)〜(4)のいずれか1に記載の精製方法。
(8)陽イオン交換クロマトグラフィー工程に使用する緩衝液の成分または、その一部に含まれるアミノ酸が、グルタミン酸、ヒスチジンおよびグルタミンから選ばれるアミノ酸である(5)〜(7)のいずれか1に記載の精製方法。
(9)ProteinAアフィニティークロマトグラフィー工程において、ProteinAアフィニティークロマトグラフィーにロードするタンパク質含有試料に塩の添加をすることを含む(1)〜(8)のいずれか1に記載の精製方法。
(10)陽イオン交換クロマトグラフィー工程終了後の精製物における、宿主細胞タンパク質の割合が100ng/mg未満である(5)〜(9)のいずれか1に記載の精製方法。
(11)陽イオン交換クロマトグラフィー工程終了後の精製物における、重合体の割合が1.5%未満である(5)〜(10)のいずれか1に記載の精製方法。
(12)(8)〜(11)のいずれか1に記載の精製方法により精製されたタンパク質を有効成分とする医薬品の製剤処方に含有されるアミノ酸が、(8)〜(11)のいずれか1に記載の陽イオン交換クロマトグラフィー工程で使用された緩衝液の成分または、その一部に含まれるアミノ酸と同じアミノ酸であるタンパク質の精製方法。
(1)ProteinAクロマトグラフィー工程に引き続いて陽イオン交換クロマトグラフィー工程を行い、さらに引き続いて好ましくは陰イオン交換クロマトグラフィー工程を行う場合
(2)陽イオン交換クロマトグラフィー工程を、ProteinAアフィニティークロマトグラフィー工程および陰イオン交換クロマトグラフィー工程に引き続いて行う場合、
ProteinAアフィニティークロマトグラフィー用樹脂としては、例えば、GE社製MabSelect、ProteinA Sepharose FF、MabSelect Xtra、MabSelect SuRe、Millipore社製Prosep vA Hicapacity、Prosep vA UltraおよびProsep Ultraplus等が挙げられるがこれらに限定されない。カラム長としては、2.5〜40cmのものが挙げられる。
陰イオン交換クロマトグラフィー用樹脂としては、例えば、GE社製Q Sepharose XL、Q Sepharose FF、DEAE Sepharose FF、ANX Sepharose FF、Capto Q、Capto DEAE、東ソー社製TOYOPEARL GigaCap Q−650、TOYOPEARL SuperQ−650、Merck社製Fractogel DEAE、Fractogel TMAE、Fractogel TMAE HicapおよびエシュムノQ等が挙げられるがこれらに限定されない。これらの樹脂で適切な長さのカラムを作製し利用する。カラム長は、通常2.5〜40cmであることが好ましい。更には、陰イオン交換膜の使用も可能である。
陽イオン交換クロマトグラフィーカラムとしては、例えば、GE社製SP Sepharose FF、CM Sepharose FF、SP Sepharose XL、Capto S、Applied Biosystems社製Poros 50 HS、Poros 50 XS, Merck社製エシュムノS、Fractogel COO−、Fractogel SO3−、Fractogel SE Hicap、東ソー社製TOYOPEARL GigaCap S−650およびTOYOPEARL GigaCap CM−650等が挙げられるがこれらに限定されない。カラム長は、通常2.5〜40cmであることが好ましい。
精密ろ過により清澄化したヒトモノクローナル抗体を含むCHO細胞培養上清86mlを10mMトリス緩衝液(pH7.0)で平衡化したProteinAアフィニティークロマトグラフィーカラム(GE社製MabSelect) 10mm IDx20cmに添加した(線速度500cm/h)。培養上清添加後、5カラム容量の平衡化緩衝液でカラムを洗浄した(線速度500cm/h)。
精密ろ過により清澄化したヒトモノクローナル抗体を含むCHO細胞培養上清86mlを10mMトリス緩衝液(pH7.0)で平衡化したProteinAアフィニティークロマトグラフィーカラム(GE社製MabSelect SuRe)10mm IDx20cmに添加した(線速度500cm/h)。培養上清添加後、5カラム容量の平衡化緩衝液でカラムを洗浄した(線速度500cm/h)。
精密ろ過により清澄化したヒトモノクローナル抗体を含むCHO細胞培養上清245mlを表2に示す10mMトリス緩衝液(pH7.0)で平衡化したProteinAアフィニティークロマトグラフィーカラム(GE社製MabSelect SuRe)10mm IDx20cmに添加した(線速度500cm/h)。培養上清添加後、5カラム容量の平衡化緩衝液でカラムを洗浄した(線速度500cm/h)。
精密ろ過により清澄化したヒトモノクローナル抗体を含むCHO細胞培養上清99mlを表3に示す10mM ヒスチジン緩衝液(pH7.0)で平衡化したProteinAアフィニティークロマトグラフィーカラム(GE社製MabSelect SuRe)10mmIDx20cmに添加した(線速度403〜500cm/h)。培養上清添加後、5カラム容量の平衡化緩衝液でカラムを洗浄した(線速度500cm/h)。
Claims (2)
- ProteinAアフィニティークロマトグラフィー工程を含むタンパク質の精製方法であって、ProteinAアフィニティークロマトグラフィー工程に使用する溶出緩衝液の成分そのものがグリシンであり、前記緩衝液のグリシン濃度が10〜100mMであり、前記緩衝液のpHが2.5〜4.5であるタンパク質の精製方法。
- 前記緩衝液のpHが3.2〜3.4である請求項1に記載の精製方法。
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