JP2015071630A - ワクチンとして使用される無毒化大腸菌易熱性エンテロトキシン(lt)との多糖結合 - Google Patents
ワクチンとして使用される無毒化大腸菌易熱性エンテロトキシン(lt)との多糖結合 Download PDFInfo
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- A61K47/64—Drug-peptide, drug-protein or drug-polyamino acid conjugates, i.e. the modifying agent being a peptide, protein or polyamino acid which is covalently bonded or complexed to a therapeutically active agent
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Abstract
【解決手段】細菌莢膜多糖抗原を、還元アミノ化反応によりLTS61Kタンパク質と化学的に結合させた多糖及び無毒化組換え大腸菌易熱性エンテロトキシン(LT)の共有結合体であって、前記LTがホロ毒素であり、野生型LTAのアミノ酸配列の61位に対応する位置のアミノ酸残基がリジン残基に置換されている変異体タンパク質LTS61Kである共有結合体を含有するワクチン。
【選択図】なし
Description
CFU:コロニー形成単位
ELISA:酵素結合免疫吸着測定法
Hib:インフルエンザ菌b型
IEF:等電点電気泳動
LT:易熱性エンテロトキシン
MALLS:多角度レーザー光散乱
OD:光学密度
PNPS:肺炎球菌多糖
PRP:ポリリボシルリビトールリン酸
PS:多糖
SDS−PAGE:ドデシル硫酸ナトリウムポリアクリルアミドゲル電気泳動法
SEC_HPLC:サイズ排除高圧液体クロマトグラフィー
RI:反射率(reflective index)
[0037]さまざまな可能性のある結合プロセスが、図面の図3に図示されている。本発明に従って選択された還元アミノ化プロセスの一般化されたフローチャートは、Glyconjugate J. 1989年、6:489頁に見出され、図面の図4として再現されている。
[0053]ニュージーランドシロウサギを、意図されたヒト用量の多糖、LTS61Kと混合した多糖、又は多糖−LTS61K結合体を用いて、2週間間隔で3回、筋肉内免疫感作して結合体ワクチンの効力を評価した。全てのワクチン調製物は、AlPO4又は他の関連アジュバントを含有しなかった。全てのワクチンの免疫応答は、抗多糖抗原特異的IgG力価を検出するためのELISA、及び抗体の機能的活性を検出するための血清殺菌アッセイにより決定した。試験結果は、結合に成功した多糖−LTS61Kワクチンのみが、多糖単独又はLTS61Kと混合された多糖のみよりも、血清中で高い多糖特異的IgG抗体力価及び大きい殺菌活性を誘導できることを示した。動物免疫原性試験は、LTS61Kタンパク質を含む無毒化大腸菌易熱性エンテロトキシンホロ毒素が、多糖抗原の特異的免疫応答を著しく刺激するのに多糖の担体タンパク質として有用であることを示唆している。
[0068]試験結果を、図面の図20〜23及び表3〜5を参照して以下に記載する。
[実施態様1]ワクチンとして有用な多糖及び無毒化大腸菌易熱性エンテロトキシン(LT)の結合体。
[実施態様2]感染性細菌の影響に対して防御又は免疫感作するための、実施態様1に記載の結合体。
[実施態様3]感染性細菌がインフルエンザ菌又は肺炎連鎖球菌である、実施態様1に記載の結合体。
[実施態様4](LT)が変異体タンパク質LT61を含む、実施態様1に記載の結合体。
[実施態様5](LT)が変異体タンパク質LTS61Kを含む、実施態様1に記載の結合体。
[実施態様6]多糖がポリリボシルリビトールリン酸である、実施態様1に記載の結合体。
[実施態様7]精製された実施態様1に記載の結合体を含む、哺乳動物に投与するためのワクチン。
[実施態様8]精製された実施態様4に記載の結合体を含む、哺乳動物に投与するためのワクチン。
[実施態様9]精製された実施態様5に記載の結合体を含む、哺乳動物に投与するためのワクチン。
[実施態様10]精製された実施態様1に記載の結合体を含むワクチンの有効量を投与するステップを含む、感染性細菌の影響から哺乳動物を防御又は免疫感作する方法。
[実施態様11]精製された実施態様5に記載の結合体を含むワクチンの有効量を投与するステップを含む、感染性細菌の影響から哺乳動物を防御又は免疫感作する方法。
[実施態様12]多糖を過ヨウ素酸酸化する工程と、それに続いて、得られた多糖及び(LT)種を還元アミノ化する工程と、得られた結合体を単離する工程と、を含む、ポリリボシルリビトールリン酸及び感染性細菌の変異体タンパク質抗原(LT)を結合させる方法。
[実施態様13]変異体タンパク質抗原(LT)種がLTS61Kを含む、実施態様12に記載の方法。
[実施態様14]インフルエンザ菌b型又は肺炎連鎖球菌の細菌莢膜多糖抗原及び変異体タンパク質LTS61Kの共有結合体。
[実施態様15]インフルエンザ菌b型又は肺炎連鎖球菌の細菌莢膜多糖抗原を還元アミノ化に供するステップと、得られた共有結合体を次いで単離するステップとを含む、多糖及びLTS61Kの共有結合体を生成する方法。
[実施態様16]PRP:LTのモル比の範囲が約3:1〜約60:1の間であり、モル/モルIO4/PRPが約0.1〜約0.4の間である、実施態様14に記載の方法。
[実施態様17]精製された実施態様1に記載の結合体を含むワクチンの有効量を投与するステップを含む、旅行者下痢の影響から哺乳動物を防御又は免疫感作する方法。
[実施態様18]精製された実施態様1に記載の結合体を含むワクチンの有効量を投与するステップを含む、腸管毒素原性大腸菌由来の下痢の影響から哺乳動物を防御又は免疫感作する方法。
[実施態様19]精製された実施態様4に記載の結合体を含むワクチンの有効量を投与するステップを含む、下痢の影響から哺乳動物を防御又は免疫感作する方法。
[実施態様20]精製された実施態様5に記載の結合体を含むワクチンの有効量を投与するステップを含む、下痢の影響から哺乳動物を防御又は免疫感作する方法。
Claims (10)
- 多糖及び無毒化大腸菌易熱性エンテロトキシン(LT)の共有結合体であって、
前記LTがホロ毒素であり、野生型LTAのアミノ酸配列の61位に対応する位置のアミノ酸残基がリジン残基に置換されている変異体タンパク質LTS61Kである、共有結合体。 - 多糖がポリリボシルリビトールリン酸である、請求項1に記載の共有結合体。
- 精製された請求項1又は2に記載の共有結合体を含む、ワクチン。
- 感染性細菌の影響から哺乳動物を防御又は免疫感作するための医薬の製造における精製された請求項1又は2に記載の共有結合体の使用。
- (a)多糖を過ヨウ素酸塩によって酸化する工程と、
(b)得られた多糖を還元アミノ化によって変異体タンパク質LTS61Kに結合させる工程と、
(c)得られた共有結合体を単離する工程と、
を含む、請求項1又は2に記載の共有結合体を調製する方法。 - 多糖がポリリボシルリビトールリン酸である、請求項5に記載の方法。
- ポリリボシルリビトールリン酸:変異体タンパク質LTS61Kのモル比の範囲が3:1〜60:1の間である、請求項6に記載の方法。
- 旅行者下痢の影響から哺乳動物を防御又は免疫感作するための医薬の製造における精製された請求項1又は2に記載の共有結合体の使用。
- 腸管毒素原性大腸菌由来の下痢の影響から哺乳動物を防御又は免疫感作するための医薬の製造における精製された請求項1又は2に記載の共有結合体の使用。
- インフルエンザ菌又は肺炎連鎖球菌の感染から哺乳動物を防御又は免疫感作するための医薬の製造における精製された請求項1又は2に記載の共有結合体の使用。
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| US33065010P | 2010-05-03 | 2010-05-03 | |
| US61/330,650 | 2010-05-03 |
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| JP2013508580A Division JP5967585B2 (ja) | 2010-05-03 | 2011-04-29 | ワクチンとして使用される無毒化大腸菌易熱性エンテロトキシン(lt)との多糖結合 |
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| JP2014246147A Ceased JP2015071630A (ja) | 2010-05-03 | 2014-12-04 | ワクチンとして使用される無毒化大腸菌易熱性エンテロトキシン(lt)との多糖結合 |
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| CN113388008B (zh) * | 2021-06-25 | 2023-04-28 | 太原师范学院 | 一种细胞内质网靶向的自释放型蛋白运输载体lca2及其应用 |
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| EP2566508B1 (en) | 2015-07-22 |
| US10624962B2 (en) | 2020-04-21 |
| JP5967585B2 (ja) | 2016-08-10 |
| TWI451874B (zh) | 2014-09-11 |
| WO2012023008A2 (en) | 2012-02-23 |
| CN107261129A (zh) | 2017-10-20 |
| ES2550853T3 (es) | 2015-11-12 |
| EP2566508A4 (en) | 2013-10-09 |
| JP2013525474A (ja) | 2013-06-20 |
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