JP2006511224A - タンパク質製造のための哺乳類細胞培養方法を用いる生成物品質の増大 - Google Patents
タンパク質製造のための哺乳類細胞培養方法を用いる生成物品質の増大 Download PDFInfo
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Abstract
Description
(発明の要約)
(図面の説明)
(発明の詳細な説明)
D-ガラクトースを用いるフィーディングを含む培養方法
培養行程中の温度変化と組み合わせたガラクトースによるフィーディングを含む培養方法
特定の態様において、本発明は、特定のタンパク質糖タンパク質生成物のシアリル化の増加および増大とともに、上記2またはそれ以上の温度変化工程を含み、さらに細胞に、好ましくは毎日D-ガラクトースを、好ましくは培養行程の終了時に糖タンパク質生成物のシアリル化の増大を生じる持続した濃度でD-ガラクトースを含むように添加された培地をフィーディングすることを含む、(i)細胞培養方法、(ii)タンパク質生成を増大させる方法、または(iii)細胞生存性を増大させる方法を指向する。**
2またはそれ以上の温度変化を含む細胞培養法の発明のさらなる態様
ガラクトースのフィーディングをポリアニオン化合物の遅延添加と併せて含む培養方法
糖タンパク質の精製および分析に関する技術と手順
細胞、タンパク質、および細胞培養
細胞培養の種類
細胞培養の期と関連パラメータ
dP/dt = qp X、または
P = qp∫0 t Xdt
[式中、qpは細胞特異的生産性定数であり、Xは細胞数または細胞容量、または細胞量等価物であり、dP/dtはタンパク質生成速度である。]
すなわち、qpは生成物濃度対生細胞の時間積分のプロットから得ることができる(∫0 t Xdt「生細胞日数」)。この式によれば、生成された糖タンパク質生成物の量を生細胞日数に対してプロットすると、傾きは細胞特異的速度に等しい。生細胞は、種々の方法、例えばバイオマス、O2取り込み速度、ラクターゼデヒドロゲナーゼ(LDH)、血中血球容積、または濁度により測定することができる(例えば、米国特許No. 5,705,364、T. Etcheverry et al.)。
本発明の培養方法による可溶性CTLA4分子および可溶性CTLA4突然変異体分子の生成
実施例1
実施例2
実験セットの説明
実験セットI:D-ガラクトース不含フィード培地で5L培養;
実験セットII:12.5g/LのD-ガラクトース含有フィード培地で5L培養;
実験セットIII:D-ガラクトース不含フィード培地で50L培養;
実験セットIV:3.0g/LのD-ガラクトース含有フィード培地で50L培養;(実験セットIVにおいて:D-ガラクトースフィードを第10日に中止し、次いで通常フィード培地(D-ガラクトース不含)を第11日〜第16日に用いた);
実験セットV:12.5g/LのD-ガラクトース含有培地で50Lフィード培養;
実験セットVI:20.0g/LのD-ガラクトース含有培地で50Lフィード培養;
実験セットVII:D-ガラクトース不含フィード培地で5000L培養;
実験セットVIII:12.5g/LのD-ガラクトース含有フィード培地で5000L培養。
実施例3
1. 細胞培養液
2. バイオリアクターにおける生成期
3. フィーディング方法
4. サンプリング
実施例4
実施例5
実験I:細胞培養温度を第0日から第21日まで37℃に調節した(温度変化なし)。
実験II:細胞培養温度を第0日〜第6日は37℃に、第6日〜第21日は34℃に調節した(温度変化1回)。
実験III:細胞培養温度を第0日〜第6日は37℃に、第6日〜第10日は34℃に、第10日〜第21日は32℃に調節した(本発明の2工程温度変化処置)。
実験IV:細胞培養温度を、第0日〜第6日は37℃に、第6日〜第10日は34℃に、第10日〜第28日は32℃に調節した(本発明の2工程温度変化処置)。
実験V: 細胞培養温度を、第0日〜第6日は37℃に、第6日〜第10日は34℃に、第10日〜第14日は32℃に、第14日〜第28日は30℃に調節した(本発明の3工程温度変化処置)。実験V-A、V-B、およびV-Cは異なる時間で評価した同じ温度変化プロフィールの同じ細胞培養を表す。すなわち、V-Aについては生成物および細胞パラメーターを14日間後に、V-Bについては21日間後に、またV-Cについては28日間後に評価した。
実施例6
実施例7
実施例7A
1. 細胞培養液
2. バイオリアクター中の生成期
3. フィーディング戦略
4.サンプリング
実施例7B
実施例8
実施例8-a: 硫酸デキストランは培養に加えなかった(「コントロール」培養:5Lバイオリアクター中で4培養、10Lバイオリアクター中で4培養)。
実施例8-b: 硫酸デキストランを第6日に濃度50mg/Lで培養に加えた(「DS 第6日」培養:5Lバイオリアクター中で2培養、10Lバイオリアクター中で1培養)。
表9:第14日の生成物L104EA29YIg力価に対する第6日の硫酸デキストラン添加の影響。
表10:第6日の硫酸デキストラン添加の生成物L104EA29YIgシアル化に対する影響
実施例9
実施例10
実施例11
実施例12
実施例13
Claims (28)
- a)タンパク質生成が可能な条件下、細胞培養中で目的タンパク質を生成する宿主細胞を培養し、
b)細胞にD-ガラクトースをフィーディングする
ことを含むタンパク質を生成するための細胞培養方法。 - フィーディング工程b)が毎日生じる請求項1記載の方法。
- フィーディング工程b)が連続的に生じる請求項1記載の方法。
- 該フィーディングが1日に2回以上生じる請求項3記載の方法。
- 該フィーディングが1日に1回未満で生じる請求項3記載の方法。
- D-ガラクトースがフィーディング培地中で細胞にフィーディングされる請求項1記載の方法。
- D-ガラクトースが約1〜50g/Lの量で細胞にフィーディングされる請求項1記載の方法。
- D-ガラクトースが約3〜25g/Lの量で細胞にフィーディングされる請求項1記載の方法。
- D-ガラクトースが細胞培養中に約0.2〜5g/Lの濃度で持続または維持される請求項9記載の方法。
- 細胞が哺乳類細胞である請求項1記載の方法。
- 哺乳類細胞がCHO細胞である請求項11記載の方法。
- 細胞培養が大規模細胞培養である請求項1記載の方法。
- 大規模細胞培養が約50L以上である請求項12記載の方法。
- 該目的タンパク質が糖タンパク質である請求項1記載の方法。
- 生成されたタンパク質のシアリル化が増大する請求項1記載の方法。
- 該目的タンパク質が可溶性CTLA4分子である請求項1記載の方法。
- 該可溶性CTLA4分子がCTLA4融合タンパク質である請求項16記載の方法。
- 該可溶性CTLA4融合タンパク質がCTLA4Igである請求項17記載の方法。
- 該可溶性CTLA4融合タンパク質が図8に示すアミノ酸-1〜357または+1〜357を含むCTLA4Igである請求項18記載の方法。
- 該可溶性CTLA4分子が可溶性CTLA4突然変異体分子である請求項17記載の方法。
- 該可溶性CTLA4突然変異体分子が図9に示すアミノ酸-1〜357または+1〜357を含むL104EA29YIgである請求項20記載の方法。
- a)タンパク質生成が可能な条件下、細胞培養中で可溶性CTLA4分子を生成するCHO細胞を培養し、
b)細胞にD-ガラクトースをフィーディングする
ことを含む可溶性CTLA4分子を生成するための細胞培養方法。 - さらに、c)細胞増殖が可能な期間および条件下で37℃またはほぼ37℃の温度で宿主細胞を培養し、
d)次いで34℃またはほぼ34℃の第2温度で細胞を培養し、
e)次いで32℃またはほぼ32℃の第3温度で細胞を培養する
ことを含む請求項1記載の方法。 - さらに、c)接種後のある時に細胞培養にポリアニオン化合物を加えることを含む請求項1記載の方法。
- さらに、f)接種後のある時に細胞培養にポリアニオン化合物を加えることを含む請求項23記載の方法。
- さらに、c)細胞増殖が可能な期間および条件下で37℃またはほぼ37℃の温度でCHO細胞を培養し、
d)次いで培養約第6日に開始する34℃またはほぼ34℃の第2温度でCHO細胞を培養し、
e)次いで培養約第10日に開始する32℃またはほぼ32℃の第3温度でCHO細胞を培養する
ことを含む請求項22記載の細胞培養方法。 - さらに、c)接種後のある時に細胞培養にポリアニオン化合物を加えることを含む請求項22記載の方法。
- さらに、f)接種後のある時に細胞培養にポリアニオン化合物を加えることを含む請求項26記載の方法。
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US9664671B2 (en) | 2012-07-24 | 2017-05-30 | Nissan Chemical Industries, Ltd. | Culture medium composition and method of culturing cell or tissue using thereof |
US10590380B2 (en) | 2012-07-24 | 2020-03-17 | Nissan Chemical Industries, Ltd. | Culture medium composition and method of culturing cell or tissue using thereof |
US11371013B2 (en) | 2012-07-24 | 2022-06-28 | Nissan Chemical Industries, Ltd. | Culture medium composition and method of culturing cell or tissue using thereof |
WO2014030726A1 (ja) * | 2012-08-23 | 2014-02-27 | 日産化学工業株式会社 | タンパク質産生促進剤 |
JPWO2014030726A1 (ja) * | 2012-08-23 | 2016-08-08 | 日産化学工業株式会社 | タンパク質産生促進剤 |
US10017805B2 (en) | 2012-08-23 | 2018-07-10 | Nissan Chemical Industries, Ltd. | Enhancing ingredients for protein production from various cells |
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