JP2011519932A - 非免疫原生の疎水性タンパク質ナノ粒子の形成方法、及びその利用 - Google Patents
非免疫原生の疎水性タンパク質ナノ粒子の形成方法、及びその利用 Download PDFInfo
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- JP2011519932A JP2011519932A JP2011508521A JP2011508521A JP2011519932A JP 2011519932 A JP2011519932 A JP 2011519932A JP 2011508521 A JP2011508521 A JP 2011508521A JP 2011508521 A JP2011508521 A JP 2011508521A JP 2011519932 A JP2011519932 A JP 2011519932A
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- nanoparticles
- zein
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- immunogenic
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Abstract
Description
第1の水性フェーズでは、0.0135gの白色ゼインは、3mlのエタノールと0.25mlの水との混合物に溶解された。ゼインの濃度又は使用される溶媒の組合せは、最適であった;しかしながら、望まれる別のサイズ範囲のナノ粒子を、ゼインの濃度又は溶媒の組成を変更することで製造することができる。ゼインの溶解は、約20秒間のプローブ超音波の適用で促進された。結果として得られる第1の水性フェーズの溶液は、その後、10秒のパルス・オンタイムと1秒のパルス・オフタイムを有する10分間の超音波エネルギー(1.39kW/h,振幅37%)の一定した適用の下で、pH7.4のクエン酸バッファーと、レシチン(0.45%w/v)及びPluronicR F68(0.9%w/v)の組み合わせとの溶液15mlへと滴下された。超音波剪断処理の間、その温度を約10°Cに維持するために、この分散系は氷浴に保持された。この分散系は、その後、エタノールが完全に揮発するまで、室温で、300rpm〜500rpmの間で磁気撹拌器に置かれた。エタノールの完全な揮発の後、ナノ粒子は残留物及び/又は界面活性剤を除去するために精製された。精製は、脱イオン化したpH7.4のクエン酸バッファーと、分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gの超遠心とを用いて、繰り返し洗浄することによって達成された。結果として得られるゼインのナノ粒子の水性懸濁液(pH7.4のクエン酸バッファー)の4mlに対して、抗凍結剤として2%w/vのトレハロースが加えられ、その後、ナノ粒子は、硬い固形物を形成するために−80°Cに保持された。この材料は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。ナノ粒子は、その後、10°Cの冷蔵室内のデシケーター(dessicator)中に保存された。
或る量の0.65%w/v白色ゼインが、6mlのエタノールと、0.50mlの水との混合物に溶解された。結果として得られる第1の水性フェーズの溶液の組成は、所望の約pH6から約pH7を得るために変更された。ゼインの溶解は、約20秒間のプローブ超音波の適用によって促進された。結果として得られる第1の水性フェーズの溶液は、その後、10秒のパルス・オンタイムと1秒のパルス・オフタイムを有する2分間の超音波エネルギー(1.39kW/h,振幅37%)の一定した適用の下で、pH7.4を有するクエン酸バッファーと、レシチン(0.45%w/v)及びPluronicR F68(0.9%w/v)の組み合わせとの溶液30mlへと滴下された。超音波剪断処理の期間中、この分散系は、温度を約10°Cに維持するために氷浴に保持された。結果として得られる粗懸濁液は、その後、20,000psiで5分間、0.1mmから0.25mmの間の開口部サイズを有する高圧ホモジナイザー(Nano DebeeR、USA)に通された。高圧ホモジナイゼーション処理の期間中、冷却装置を用いて高圧ホモジナイザー内に水を循環することで温度が約10℃に維持される。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで保持された。完全に揮発した後、ナノ粒子は残留物又は界面活性剤を除去するために精製された。精製は、pH7.4のクエン酸バッファーと、分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gの超遠心とを用いて、繰り返し洗浄することによって達成された。ナノ粒子の4ミリリットルの水性懸濁液(pH7.4クエン酸バッファー)は、35mgの2%w/vトレハロースと混合され、硬い固形物を形成するために−80°Cに保持された。この固形物は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
0.0135gの量の白色ゼインは、3mlのエタノールと0.25mlの0.01N NaOHとの混合物に溶解され、pH6からpH7の間に調節された。この溶液には、0.0066gの6,7‐ヒドロキシクマリンが加えられ、その後、この混合物は溶解を保証するために20秒間のプローブ超音波処理にかけられた。結果として得られる溶液は、10秒のパルス・オンタイムと、1秒のオフタイムとを有する10分の間、1.39kW/h及び振幅37%の一定した超音波エネルギーの下で、0.0675gのレシチンと0.135gのPluronicR F68とを含む15mlのクエン酸バッファー(pH7.4)へと滴下された。超音波処理の期間中、この溶液は、温度を約10°Cに維持するために氷浴に保持された。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで置かれた。アルコールの完全な揮発後、ナノ粒子は余分な薬及び/又は界面活性剤を除去するために精製された。精製は、pH7.4のクエン酸バッファーと、分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gの超遠心とを用いて、繰り返し洗浄することによって達成された。クマリンがロードされたナノ粒子の4ミリリットルの水性懸濁液(pH7.4クエン酸バッファー)は、35mgのトレハロースが加えられ、硬い固形物を形成するために−80°Cに保持された。この固形物は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
0.0135gの量の白色ゼインは、3mlのエタノールと0.25mlの水との混合物に溶解された。第1の水性フェーズのこの溶液に、0.001gのドキソルビシン塩酸塩が加えられ、そして、この混合物はドキソルビシン塩酸塩を溶解するために20秒間のプローブ超音波にかけられた。結果として得られる溶液は、10秒のパルス・オンタイムと、1秒のオフタイムとを有する10分の間、1.39kW/h及び振幅37%の一定した超音波エネルギーの下で、0.0675gのレシチンと0.135gのPluronicR F68を含む15mlのクエン酸バッファー(pH7.4)へと滴下された。超音波処理の期間中、この溶液は、温度を約10°Cに維持するために氷浴に保持された。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで置かれた。アルコールが完全に揮発した後、このナノ粒子は残留物を除去するために精製された。精製は、pH7.4のクエン酸バッファーを用いて、及び分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gの超遠心にかけて、繰り返し洗浄することによって達成された。ドキソルビシンのナノ粒子の水性懸濁液(pH7.4クエン酸バッファー)に、35mgのトレハロースが加えられ、そして、この混合物は硬い固形物を形成するために−80°Cに保持された。この材料は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
0.0135gの量の白色ゼインは、3mlのエタノールと0.25mlの水との混合物に溶解された。このゼインの溶液に、FITCでラベルされたデキストラン(Mwt4000Da)を0.003g加え、そして、デキストラン‐FITCはこの溶液に溶解された。結果として得られる溶液は、10秒のパルス・オンタイムと、1秒のオフタイムとを有する10分の間、1.39kW/h及び振幅37%の一定した超音波エネルギーの下で、0.0675gのレシチンと0.135gのPluronicR F68とを含む15mlのクエン酸バッファー(pH7.4)へと滴下された。超音波処理の期間中、この溶液は、温度を約10°Cに維持するために氷浴に保持された。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで置かれた。アルコール溶媒が完全に揮発した後、ナノ粒子は残留物を除去するために精製された。精製は、pH7.4のクエン酸バッファーと、分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gでの超遠心とを用いて、繰り返し洗浄することによって達成された。デキストラン‐FITCがロードされたナノ粒子の水性懸濁液(pH7.4クエン酸バッファー)に、35mgのトレハロースが加えられ、そして、この混合物は硬い固形物を形成するために−80°Cに保持された。この材料は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
0.0135gの量の白色ゼインは、3mlのエタノールと0.25mlの水との混合物に溶解された。このゼインの溶液に0.187μgのpDNA GFP(緑色蛍光タンパク質)を加え、このpDNA GFPはこのゼインの溶液に溶解された。結果として得られる溶液は、10秒のパルス・オンタイムと、1秒のオフタイムとを有する10分の間、1.39kW/h及び振幅37%の一定した超音波エネルギーの下で、0.0675gのレシチン、0.135gのPluronicR F68、及び7.5mMのCaCl2を含む15mlのクエン酸バッファー(pH7.4)へと滴下された。超音波処理の期間中、この溶液は、温度を約10°Cに維持するために氷浴に保持された。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで置かれた。アルコール溶媒が完全に揮発した後、過剰な薬及び界面活性剤を除去するために、分子量5000Daのカットオフの遠心フィルタを使用し、50分間、3950gの処理で超遠心することで、ナノ粒子は精製された。2サイクルの超遠心が実行され、ナノ粒子は水で洗浄された。pDNAがロードされたナノ粒子の水性懸濁液に、35mgのトレハロースが加えられ、そして、この混合物は硬い固形物を形成するために−80°Cに保持された。この材料は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
ブランクゼインのナノ粒子は、開示したナノ析出方法を使用して調製された。架橋剤は、第2の水性フェーズのプローブ超音波処理以降に加えられた。ナノ粒子は、更に24時間インキュベートされた。インキュベートの終わりに、ナノ粒子は遠心濾過を用いて精製され、その後、凍結乾燥された。
架橋効率%=[a−b/a]×100
ここで、a=非架橋ゼイン対吸光度の傾きであり、また、b=架橋ゼイン対吸光度の傾きである。検量線を作成するために使用されるゼインの濃度範囲は0.357mg/ml〜12mg/mlであり、また、相関係数は0.9994である。
0.0135gの量の白色ゼインは、3mlのエタノールと0.25mlの水(0.25ml)との混合物に溶解された。この第1の水性の溶液に0.005gのローダミン‐123が加えられた。結果として得られる溶液は、10秒のパルス・オンタイムと、1秒のオフタイムとを有する10分の間、1.39kW/h及び振幅37%の超音波エネルギーの一定した適用の下で、0.0675gのレシチンと0.135gのPluronicR F68とを含む、pH7.4のクエン酸バッファー15mlへと滴下された。超音波処理の期間中、この溶液は、温度を約10°Cに維持するために氷浴に保持された。その後、25%w/vのグルタルアルデヒド0.5mlが加えられ、300〜500rpmで撹拌しながら、37°Cで3時間インキュベートされた。残存する架橋剤は、10%w/vメタ重亜硫酸ナトリウムで中和された。続いて、この分散系は、エタノールが完全に揮発するまで、室温で、磁気撹拌器に300r.p.m〜500r.p.mで置かれた。アルコールが完全に揮発した後、ナノ粒子は超遠心で精製された。精製は、pH7.4のクエン酸バッファーと、分子量5000Daのカットオフの遠心フィルタを使用する、50分間、3950gの超遠心とを用いて、繰り返し洗浄することによって達成された。ローダミンがロードされたナノ粒子の水性懸濁液(pH7.4のクエン酸バッファー)に、35mgのトレハロースが加えられ、そして、この溶液は硬い固形物を形成するために−80°Cに保たれ、この固形物は、その後、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥された。
PEG化ゼインは、5mlの90%エタノール中の白色ゼイン0.1gに、メトキシPEG‐スクシンイミドコハク酸(methoxy PEG‐succinimidyl succinate)(Mwt5000Da)を0.1g加えることによって製造された。この混合物は、37°Cで3時間から24時間の間インキュベートされた。この溶液は、その後、残留物を除去するために、24時間に亘って室温で磁気撹拌器(100rpmでかき回す磁気撹拌子)において、水に対して透析された(分子量のカットオフ10,000Da)。結果として得られる産物を、その後、−80°Cで凍結した後で、−47°C、真空度60mTorrで12時間〜14時間に亘って凍結乾燥した。様々なインキュベート時間で観察されたPEG化効率が以下の表7に示されており、表7において、効率のパーセンテージは、前述したTNBS分析工程を使用して測定された。他の分子量のPEG(例えば500Daから5000Da)を使用することもできる。同様に、メトキシPEG‐N‐ヒドロキシコハク酸エステル(methoxy PEG‐N‐hydroxyl succinate ester)などのPEG誘導体又は他の誘導体を使用することもできる。
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Claims (22)
- 疎水性水不溶性タンパク質を提供するステップ;
水アルコール溶媒で前記タンパク質を溶解し、第1の水性フェーズ溶液を提供するステップ;
界面活性剤及びリン脂質の存在下で、前記第1の水性フェーズ溶液に緩衝剤を加えて、約pH6.8から約pH7.4の間のpHを有する第2の水性フェーズ溶液を製造するステップ;
前記溶液内で粒子の直径サイズの縮小させるために、前記第2の水性フェーズ溶液を処理するステップ;
約400nm未満の直径サイズを有するナノ粒子を製造するために、任意の残留する溶媒を揮発させるステップ;及び
前記ナノ粒子を遠心するステップ、
とを含む、非免疫原性ナノ粒子を製造する方法。 - 遠心後に、前記ナノ粒子を凍結乾燥するステップを更に含む、請求項1に記載の方法。
- 前記ナノ粒子の大気圧への暴露を制限する条件下に前記ナノ粒子を保存するステップを更に含む請求項2に記載の方法。
- ベースとなる前記タンパク質が、選択された等級のゼインであることを特徴とする、請求項1に記載の方法。
- 前記選択された等級のゼインが白色ゼインであることを特徴とする請求項4に記載の方法。
- 前記緩衝剤がクエン酸バッファーであることを特徴とする請求項1に記載の方法。
- 前記界面活性剤がポロキサマーであり、また、前記リン脂質がレシチンであることを特徴とする請求項6に記載の方法。
- 前記界面活性剤と前記リン脂質の比率は2:1である請求項7に記載の方法。
- 粒子の直径サイズを縮小させる前記第2の水性フェーズ溶液の前記処理が、ナノ粒子を超音波剪断、高圧ホモジナイゼーション、又はそれらの組合せにかけるステップを更に含むことを特徴とする、請求項1に記載の方法。
- 前記第1のフェーズ溶液の形成において、前記ナノ粒子のカプセル化のために選択される分子を、前記タンパク質に加えるステップを更に含む、請求項1に記載の方法。
- 前記分子が被検体に投与するために選択された治療用の物質であることを特徴とする、請求項10に記載の方法。
- 患者に前記ナノ粒子を投与するステップを更に含む請求項11に記載の方法。
- 前記タンパク質がPEG化されることを特徴とする、請求項10に記載の方法。
- 請求項10に係る方法によって形成される治療活性のある非免疫原性ナノ粒子。
- 前記ナノ粒子を架橋するステップをさらに含む、請求項1又は請求項10に記載の方法。
- 疎水性の水不溶性タンパク質に治療用の分子をカプセル化することによって形成される非免疫原性ナノ粒子を含み、前記ナノ粒子は約400nm未満の直径サイズを有する、治療用組成物。
- 前記ナノ粒子の前記直径サイズは約100nmから約300nmの間である、請求項16に記載の治療用組成物。
- 病気又は疾患を患う、或いは患う危険性のある被検体における、病気又は疾患の治療に使用するための薬剤を製造するための、400nm未満の直径サイズを有し、治療剤を含む非免疫原性のナノ粒子の薬理学的に治療的な量を含む物質の使用。
- 前記ナノ粒子が約100nmから約300nmまでの直径サイズを有する請求項18に記載の方法。
- 前記ナノ粒子を前記投与するステップが、経口経路、非経口経路、静注経路、腹腔内経路、経皮経路、局所的経路、経鼻経路、又はオプソモロジカルな経路による投与であることを特徴とする、請求項12又は21に記載の方法。
- 選択された量の水不溶性タンパク質;
前記タンパク質を溶解するための水アルコール溶媒;
少なくとも1つの緩衝剤;
選択された界面活性剤;
を含む、非免疫原生のナノ粒子を製造するためのキット。 - 前記選択された界面活性剤と組み合わせて選択された比率を与える量の少なくとも1つの選択されたリン脂質を更に含む、請求項21に記載のキット。
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CN112121019B (zh) * | 2020-09-23 | 2022-05-31 | 合肥工业大学 | 抗氧化型淀粉基糊精复合纳米颗粒及其制备方法与应用 |
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CA2723563C (en) | 2017-12-12 |
KR20110036704A (ko) | 2011-04-08 |
EP2285825A1 (en) | 2011-02-23 |
US20110091565A1 (en) | 2011-04-21 |
IL209155A (en) | 2016-07-31 |
EP2285825B1 (en) | 2020-07-15 |
JP5546532B2 (ja) | 2014-07-09 |
BRPI0908686B1 (pt) | 2020-09-29 |
US9616021B2 (en) | 2017-04-11 |
HK1158221A1 (en) | 2012-07-13 |
AU2009244742A1 (en) | 2009-11-12 |
AU2009244742B2 (en) | 2014-11-06 |
CA2723563A1 (en) | 2009-11-12 |
US20140308351A1 (en) | 2014-10-16 |
RU2010146684A (ru) | 2012-06-20 |
JP2014177474A (ja) | 2014-09-25 |
CN102066399B (zh) | 2014-11-26 |
JP5851550B2 (ja) | 2016-02-03 |
WO2009137112A1 (en) | 2009-11-12 |
US8669225B2 (en) | 2014-03-11 |
BRPI0908686B8 (pt) | 2021-05-25 |
EP2285825A4 (en) | 2012-11-28 |
IL209155A0 (en) | 2011-01-31 |
KR101616771B1 (ko) | 2016-04-29 |
CN102066399A (zh) | 2011-05-18 |
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