JP2014520801A - グラム陰性細菌の外膜小胞を、洗浄剤を含まずに生産するためのプロセス - Google Patents
グラム陰性細菌の外膜小胞を、洗浄剤を含まずに生産するためのプロセス Download PDFInfo
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Abstract
Description
a)グラム陰性細菌の集団を、定常増殖期まで培養するステップと、
b)定常増殖期の開始後少なくとも約1時間の時点で、a)において得られた細菌を、pHが約pH7.5を超えるか若しくはpH8.0を超えるように調整されるか、又は約pH7.5を超えるか若しくはpH8.0を超え、金属キレート化剤、好ましくはEDTAの濃度が約1から100mMの間となるように調整されるか又は約1から100mMの間である培地中でインキュベートして、OMVを抽出するステップと、
c)b)において抽出されたOMVを回収するステップであって、回収が、OMVからの細菌の除去を少なくとも含むステップと
を含むプロセスを提供する。
を有することが好ましい。
収率及び純度が改善された、髄膜炎菌血清型Bに対する九価のOMVワクチンの規模拡大可能な製造
以下の例は、40Lの産生用培養物により実施したが、少なくとも800Lまでは完全に規模拡大可能である。
株RL16.2.15が、P1.7,16/P1.5−1,2−2/P1.19,15−1を発現し、
株RL10.12.4が、P1.5−2,10/P12−1,13/P1.7−2,4を発現し、
株RL14.1.6が、P1.22,14/P1.7−1,1/P1.18−1,3,6を発現する髄膜炎菌血清群B株
を、−135℃で、マスターの種地として保管した。マスターの種地を融解させ、150mLの既知組成培地[Baartら、2007]を伴う振とうフラスコ内で増殖させ、指数関数的増殖の間にアリコートに分割し、グリセロールを添加した後−135℃で保管し、作業用種地を得た。
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Claims (17)
- ワクチンにおいて用いられる細菌の外膜小胞(OMV)を、洗浄剤を含まずに調製するためのプロセスであって、
a)グラム陰性細菌の集団を、定常増殖期まで培養するステップと、
b)定常増殖期の開始後少なくとも約1時間の時点で、a)において得られた細菌を、pHがpH8.0を超えるように調整されるか又はpH8.0を超え、金属キレート化剤、好ましくはEDTAの濃度が約1から100mMの間となるように調整されるか又は約1から100mMの間である培地中でインキュベートして、OMVを抽出するステップと、
c)b)において抽出されたOMVを回収するステップであって、回収が、OMVからの細菌の除去を少なくとも含むステップと
を含む上記プロセス。 - グラム陰性細菌が、細菌に毒性が低減されたLPSを産生させるが、LPSがそのアジュバント活性の少なくとも一部を保持する遺伝子改変を有し、前記遺伝子改変が、lpxL1遺伝子及びlpxL2遺伝子若しくはこれらの相同体、並びにlpxK遺伝子若しくはその相同体から選択される1又は複数の遺伝子の発現を減少させるか、若しくはこれをノックアウトする改変であり、並びに/又は1又は複数のlpxE遺伝子及び/若しくはpagL遺伝子の発現をもたらす改変であることが好ましい、請求項1に記載のプロセス。
- b)において、細菌を培地中でインキュベートする定常増殖期の開始後の時点が、約1から9時間の間、好ましくは約2から5時間の間である、請求項1又は2に記載のプロセス。
- OMVを、好ましくは濾過滅菌により、好ましくは小孔が約0.3マイクロメートル未満のフィルターを用いて滅菌する、請求項1から3までのいずれか一項に記載のプロセス。
- ステップb)における金属キレート化剤、好ましくはEDTAの濃度が、約5から15mMの間であり、及び/又は、pHが、約pH7.5からpH9.5の間、好ましくは約pH8.0からpH9.0の間、より好ましくは約pH8.2からpH8.8の間、より好ましくは約pH8.4からpH8.7の間である、請求項1から4までのいずれか一項に記載のプロセス。
- a)における培養物の容量、及び/又はb)における培地の容量が、少なくとも約10L、より好ましくは少なくとも約20L、40L、60L、80L、100L、200L、300L、400L、500L、800L、1500L、5000L、10,000L、20,000L、又は40,000Lである、請求項1から5までのいずれか一項に記載のプロセス。
- グラム陰性細菌が、ナイセリア(neisseria)属又はボルデテラ(bordetella)属の種、好ましくは髄膜炎菌(neisseria meningitidis)又は百日咳菌(bordetella pertussis)である、請求項1から6までのいずれか一項に記載のプロセス。
- グラム陰性細菌が、遺伝子産物、好ましくは、cpsと、lpxL1、rmpM、porA、porB、及びopAを含めたリピドA生合成遺伝子産物からなる群から選択される遺伝子産物の発現を減少させるか、又はノックアウトする1又は複数の突然変異を有する、請求項1から7までのいずれか一項に記載のプロセス。
- グラム陰性細菌が、複数のporA亜型を発現する、請求項1から8までのいずれか一項に記載のプロセス。
- 集団が、グラム陰性細菌の複数の株を含み、各株が、異なるporA亜型を発現する、請求項1から9までのいずれか一項に記載のプロセス。
- グラム陰性細菌が、前記グラム陰性細菌に対する外来の抗原を発現する、請求項1から10までのいずれか一項に記載のプロセス。
- OMVを、医薬として許容される賦形剤と組み合わせるステップをさらに含む、請求項1から11までのいずれか一項に記載のプロセス。
- 請求項1から12までのいずれか一項に記載のプロセスにより得ることが可能なOMV。
- 請求項13に記載のOMVと、医薬として許容される賦形剤とを含む医薬組成物。
- 好ましくは髄膜炎の処置における医薬としての使用のための、請求項13に記載のOMV、又は請求項14に記載の医薬組成物。
- 対象において、好ましくは髄膜炎菌(neisseria meningitidis)に対する免疫反応を誘発するためのプロセスであって、請求項13に記載のOMV、又は請求項14に記載の医薬組成物を前記対象へと投与することを含む上記プロセス。
- 対象において、好ましくは髄膜炎菌(neisseria meningitidis)に対する免疫反応を誘発するための、請求項13に記載のOMV、又は請求項14に記載の医薬組成物の使用であって、請求項13に記載のOMV、又は請求項14に記載の医薬組成物を前記対象へと投与することを含む上記使用。
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JP2022130637A (ja) * | 2016-11-25 | 2022-09-06 | グラクソスミスクライン バイオロジカルズ ソシエテ アノニム | 免疫原性コンジュゲート及びその使用 |
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SI2729167T1 (sl) * | 2011-07-07 | 2018-09-28 | De Staat Der Nederlanden, Vert. Door De Minister Van Vws | Proces za detergent-prosto proizvodnjo veziklov zunanje membrane gram-negativne bakterije |
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JP2018521632A (ja) * | 2015-06-02 | 2018-08-09 | デ スタート デル ネーデルランデン, ヴェルト. ドール デ ミニステル ヴァン ヴイダブリューエス ミニステリー ヴァン ボルクスゲツォントヘイト, ベルジーン エン シュポルトDe Staat Der Nederlanden, Vert. Door De Minister Van Vws Ministerie Van Volksgezondheid, Welzijn En Sport | グラム陰性外膜小胞における抗原の表面提示 |
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JP2022130637A (ja) * | 2016-11-25 | 2022-09-06 | グラクソスミスクライン バイオロジカルズ ソシエテ アノニム | 免疫原性コンジュゲート及びその使用 |
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SI2729167T1 (sl) | 2018-09-28 |
HRP20180890T1 (hr) | 2018-09-07 |
AU2012278407A1 (en) | 2014-01-16 |
US20160303214A1 (en) | 2016-10-20 |
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US9707286B2 (en) | 2017-07-18 |
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PL2729167T3 (pl) | 2018-08-31 |
US9272006B2 (en) | 2016-03-01 |
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NZ618918A (en) | 2015-10-30 |
JP6002763B2 (ja) | 2016-10-05 |
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EP2729167A1 (en) | 2014-05-14 |
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