JP2017511751A - タンパク質溶液からバッファーまたは媒体を連続的に交換するための限外ろ過ユニット - Google Patents
タンパク質溶液からバッファーまたは媒体を連続的に交換するための限外ろ過ユニット Download PDFInfo
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Abstract
Description
2.細胞保持システム、
および、工程1および工程2の代わりにフェドバッチ培養。
4.好ましくは濃縮によるバッファーまたは媒体交換
5.好ましくは除菌ろ過による生物汚染度の減少
6.回収クロマトグラフィー
通常はプロダクトストリームのさらなる精製のために追加の工程が実施され、具体的には:
7.ウイルス不活性化
8.中和
9.任意でさらに生物汚染度の減少(除菌ろ過)
バイオ医薬品の高品質基準の観点から、通常はこれらに以下の工程も続く:
10.クロマトグラフィーによる中間および精密な精製
11.生物汚染度の減少、例えば除菌ろ過
12.ウイルスろ過
13.バッファー交換および好ましくは濃縮
14.除菌ろ過
上記の生産プロセスでは、栄養液を有する発酵槽内の細胞が生物由来プロダクトを生産する。この場合の栄養液は、細菌および胞子といった微生物にとって理想的な成長培地でもある。
C=Co*exp(洗浄の体積/体積プロダクト溶液)、ここで、Coは塩の初期濃度である。このプロセスはよく、文献上で間違って連続的ダイアフィルトレーションと呼ばれるが、フィードストリームは容器に連続的に供給されず、プロダクトストリームは容器から連続的に除去されないため、バッチプロセスである。これは、バッチが完全に処理されるまでバッファーを連続的にシステム内に供給するという事実が原因である[Alois Jungbauer, "Continuous downstream processing of biopharmaceuticals", Trends in Biotech., 2013 (8), 479-492, WO2009017491]。
−少なくとも1つのポンプが、プロダクトストリームを限外ろ過モジュールのキャピラリー内に運搬し、
−ポンプが、プロダクトストリームをキャピラリーから運搬し、
−少なくとも1つのさらなるポンプが、洗浄流体をキャピラリーの外側を通過させ、
−限外ろ過モジュール全体でプロダクトストリームおよび洗浄流体を循環する手段(measure)を一切有さない、
ことを特徴とするユニットである。
本発明による発酵ブロスからのプロダクトストリームのバッファー交換のための解決策の有用性を調べるために、図3による試験用プラントを例として建設した。試験用プラントのチューブとして、内径が3.2mmであるPharmed BPT(登録商標)チューブを用いた。図3の要素に加え、試験用プラントは、試験用プロダクトストリームとして、細胞を含まない発酵ブロスを充填した10Lの容器を含んでいた。容器(図示されず)にチューブによって結合された第1のポンプ(M0301)は、第1に、図3で示す通り、プロダクトストリームを濃縮ユニット内へ運搬した。試験用分子として、免疫グロブリンG抗体(IgG抗体)を選択した。
Claims (10)
- バイオ医薬および生物学的巨大分子プロダクトを含有するプロダクトストリームの連続的限外ろ過のためのユニットであって、少なくとも1つのキャピラリー限外ろ過モジュールを含むユニットにおいて、
−少なくとも1つのポンプが、前記プロダクトストリームを前記限外ろ過モジュールのキャピラリー内に運搬し、
−容積ポンプが、前記プロダクトストリームを前記キャピラリーから運搬し、
−少なくとも1つのさらなるポンプが、洗浄流体を前記キャピラリーの外側を通過させ、
−前記ユニットが、前記プロダクトストリームおよび前記洗浄流体を前記限外ろ過モジュール内へ循環させる手段を含まない、
ことを特徴とするユニット。 - 前記洗浄流体を、使用する前記限外ろ過モジュールから調節して除去する手段を含む、請求項1に記載のユニット。
- 複数のキャピラリー限外ろ過モジュールが直列または並列で結合されることを特徴とする、請求項1または2に記載のユニット。
- 連続的限外ろ過のためのユニットにおける、バイオ医薬および生物学的巨大分子プロダクトを含有するフィードストリームの連続的限外ろ過のための方法において、前記フィードストリームは、キャピラリー限外ろ過モジュールの少なくとも1つのキャピラリー限外ろ過膜を介して洗浄流体で洗浄され、前記フィードストリームはキャピラリー内に運搬されて前記洗浄流体は前記キャピラリーの外側にわたって運搬され、前記フィードストリームおよび前記洗浄流体は、前記限外ろ過モジュール内に連続的に供給され、かつ前記限外ろ過モジュールから連続的に除去され、前記フィードストリームおよび前記洗浄流体は、前記限外ろ過モジュール内に循環されず、前記プロダクトストリームの除去は、所望されない純流動が前記キャピラリー内部から前記キャピラリー外部へまたは前記外部から前記内部へ通過できないように制御される、ことを特徴とする方法。
- 前記連続的限外ろ過のためのユニットにおいて、前記フィードストリームのプロダクトが最大で2の係数で濃縮され、または2の係数で希釈されることを特徴とする、請求項4に記載の方法。
- 前記洗浄流体が、前記フィードストリームに対して横断流または向流で、好ましくは向流で通過することを特徴とする、請求項4または5に記載の方法。
- 複数のキャピラリー限外ろ過モジュールが直列または並列であり、前記キャピラリー限外ろ過モジュールの膜間の最大の圧力低下が1barを超えないことを特徴とする、請求項4〜6のいずれか1項に記載の方法。
- 請求項1〜3のいずれか1項に記載のバイオ医薬および生物学的巨大分子プロダクトを含有するプロダクトストリームの連続的限外ろ過のための少なくとも1つのユニットを含む製造プラント。
- 前記連続的限外ろ過のためのユニットに結合される少なくとも1つの濃縮ユニットをさらに含む、請求項8に記載の製造プラント。
- 前記濃縮ユニットが、
−透過水出口を有する1つまたは複数の膜モジュールと、濃縮ループ内の循環のためのポンプと、脱気袋と、を含む前記濃縮ループ内に前記プロダクトストリームを運搬するポンプと、
−タンパク質含有溶液を前記濃縮ループの外に運搬するポンプと、
−代替的に、単一使用で単一通過の膜モジュールを通過する流れのためのポンプと、
を含むことを特徴とする、請求項9に記載の製造プラント。
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