JP2000501936A - 高細胞密度発酵法による大腸菌での組換えタンパク質の生産方法 - Google Patents
高細胞密度発酵法による大腸菌での組換えタンパク質の生産方法Info
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- JP2000501936A JP2000501936A JP9521662A JP52166297A JP2000501936A JP 2000501936 A JP2000501936 A JP 2000501936A JP 9521662 A JP9521662 A JP 9521662A JP 52166297 A JP52166297 A JP 52166297A JP 2000501936 A JP2000501936 A JP 2000501936A
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- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2863—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for growth factors, growth regulators
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
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- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
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- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/70—Vectors or expression systems specially adapted for E. coli
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Abstract
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Claims (1)
- 【特許請求の範囲】 1.外来遺伝子を運ぶプラスミドと誘導プロモータで形質転換した大腸菌細胞を 使用して外来タンパク質を生産する方法であって、基質または代謝副産物による 成長阻害の無い、バッチステージと流加ステージによる高細胞密度醗酵の工程、 及び発現したタンパク質を培養培地から分離・精製する工程を有し、流加フェー ズにおける基質濃度を、連続した自動または半自動の分析・添加システムにより 制御する方法であって、その流加フェーズにおいて、(i)細胞の無制限増殖( μ=μmax)状態を維持しながら培地中の炭素源の濃度を0.1〜25g/lの範 囲内で一定に保ち、(ii)細胞密度が10〜80g/lの状態でプロモータを誘 導することにより外来タンパク質の生成を開始し、(iii)タンパク質合成の誘 導を開始した後に、窒素、ホスフェート及び微量の塩を連続的に供給し、(iv) 酸素を発酵液体培地に適当な方法で送り込むことにより全流加フェーズの間にお いてpO2が5〜25%になるように調節することを特徴とする、外来タンパク 質の生産方法。 2.流加フェーズを通して、炭素源の濃度が1〜3g/lの範囲内で一定に保た れることを特徴とする請求項1記載の生産方法。 3.細胞密度が50〜80g/lの状態で、窒素、リン酸および微量元素を添加 することを特徴とする請求項1又は2記載の生産方法。 4.前記(ii)の細胞密度が20〜60g/lであることを特徴とする請求項1 〜3のいずれか1項に記載の生産方法。 5.流加フェーズにおいて細胞密度を100〜150g/lにできることを特徴 とする請求項1〜4のいずれか1項に記載の生産方法。 6.外来遺伝子を含み、2つのターミネータシーケンスに隣接する発現カセット を有する発現ベクターを使用することを特徴とする請求項1〜5のいずれか1項 に記載の生産方法。 7.追加的に使用される発現ベクターには、自殺システム、好ましくは hok-sok 自殺システムが含まれることを特徴とする請求項6記載の生産方法。 8.抗体フラグメント、特にミニ抗体をコードする外来遺伝子が使用されること を特徴とする請求項6又は7記載の生産方法。 9.請求項12〜16のいずれか1項に記載の発現ベクターが使用されることを 特徴とする請求項1〜4のいずれか1項に記載の生産方法。 10.醗酵フェーズにおいて、培地中に5g/l以上のアセテートを蓄積させな い大腸菌株が使用されることを特徴とする請求項1〜9のいずれか1項に記載の 生産方法。 11.大腸菌株RV308(ATCC 31608)が使用されることを特徴と する請求項10記載の生産方法。 12.高細胞密度醗酵条件下で外来タンパク質を発現させることに適しており、 (i)上流ターミネータシーケンスと下流ターミネータシーケンス (ii)lac プロモータ/オペレータ システム (iii)T7g10シャイン・ダルガノシーケンス (iv)pelB または ompA シグナルシーケンス (v)外来遺伝子のシーケンス を有することを特徴とする大腸菌発現ベクター。 13.さらに自殺システム、特にhok-sok自殺システムを有することを特徴とす る請求項12記載のベクター。 14.上流ターミネータシーケンスがtHPであり、下流ターミネータシーケンス がtLPPであることを特徴とする請求項12又は13記載のベクター。 15.外来遺伝子にはミニ抗体のVH鎖とVL鎖をコードするシーケンスが含まれ ることを特徴とする請求項12〜14のいずれか1項に記載のベクター。 16.図2に示された構築スキームに沿ったpHKK構造を有する発現ベクター 。 17.請求項14記載の発現ベクターでRV308(ATCC 31608)を 形質転換することにより得られる、形質転換大腸菌発現宿主RV308[pHK K]。
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EP95119478.6 | 1995-12-11 | ||
EP95119478 | 1995-12-11 | ||
PCT/EP1996/005260 WO1997021829A1 (de) | 1995-12-11 | 1996-11-28 | Verfahren zur herstellung von rekombinanten proteinen in e. coli mittels hochzelldichte-fermentation |
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JP2007109443A Expired - Fee Related JP4102422B2 (ja) | 1995-12-11 | 2007-04-18 | 大腸菌発現ベクター |
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US (1) | US6410270B1 (ja) |
EP (1) | EP0866876B1 (ja) |
JP (2) | JP4101879B2 (ja) |
KR (1) | KR100444735B1 (ja) |
CN (1) | CN1117160C (ja) |
AR (1) | AR005035A1 (ja) |
AT (1) | ATE213271T1 (ja) |
AU (1) | AU716612B2 (ja) |
BR (1) | BR9611937A (ja) |
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ES (1) | ES2171752T3 (ja) |
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NO (1) | NO319090B1 (ja) |
PL (1) | PL185665B1 (ja) |
PT (1) | PT866876E (ja) |
RU (1) | RU2201455C2 (ja) |
SI (1) | SI0866876T1 (ja) |
SK (1) | SK283169B6 (ja) |
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