JP2020512448A - ポリ(オキサゾリン)安定化剤を含有する有機ポリマー粒子および有機ポリマー粒子の安定化のためのポリ(オキサゾリン)の使用 - Google Patents
ポリ(オキサゾリン)安定化剤を含有する有機ポリマー粒子および有機ポリマー粒子の安定化のためのポリ(オキサゾリン)の使用 Download PDFInfo
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- JP2020512448A JP2020512448A JP2019550744A JP2019550744A JP2020512448A JP 2020512448 A JP2020512448 A JP 2020512448A JP 2019550744 A JP2019550744 A JP 2019550744A JP 2019550744 A JP2019550744 A JP 2019550744A JP 2020512448 A JP2020512448 A JP 2020512448A
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- JP
- Japan
- Prior art keywords
- oxazoline
- polymer particles
- organic polymer
- poly
- polycarboxylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 125000005362 aryl sulfone group Chemical group 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 1
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- 125000005442 diisocyanate group Chemical group 0.000 description 1
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- 229920001992 poloxamer 407 Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
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- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
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- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
Description
i)ポリマー分散液の調製および精製中のポリマー粒子の安定化(安定化補助物質は、しばしば「サーファクタント」または「界面活性剤」と呼ばれる)、
ii)ポリマー分散液の凍結乾燥および貯蔵中のポリマー粒子の安定化(安定化補助物質は、しばしば「凍結防止剤」と呼ばれる)、ならびに
iii)分散媒、例えば水性系の中で使用中のポリマー粒子の安定化。
−NR1−CR3H−CR4H−(I)、 −NR1−CR3H−CR4H−CR5H−(II)
(式中、
R1は、式−CO−R2の残基を意味し、
R3、R4、およびR5は互いに独立して、水素、メチル、エチル、プロピル、またはブチルを意味し、
R2は、水素、メチル、エチル、−CmH2m−X、または−(CnH2n−O)o−(CpH2p−O)q−R6からなる群から選択され、
R6は、水素もしくはC1〜C6−アルキル、とりわけメチル、またはことに好ましくは水素であり、
mは、1〜6の整数であり、
Xは、ヒドロキシル、アルコキシ、アミノ、N−アルキルアミノ、N,N−ジアルキルアミノ、カルボキシル、カルボン酸エステル、スルホニル、スルホン酸エステル、またはカルバメートからなる群から選択され、
nおよびpは互いに独立して、2〜4の整数であり、nとpは異なり、nは好ましくは2であり、pは好ましくは3を意味し、ならびに
oおよびqは独立して、0〜60、とりわけ1〜20、ことに好ましくは2〜10の整数であり、oまたはqの少なくとも一方は0ではない)
の繰り返し構造単位を有する。
ポリ(2−オキサゾリン)の合成は、既に文献に記載されている(例えばWiesbrock, F.らMacromolecular Rapid Communications 2004、25、1895〜1899頁を参照)。よって本手順を、例として重合度(DP)61のポリ(2−エチル−2−オキサゾリン)(P(EtOx)61)に関して説明する。
2)PS=ポリスチレン
PLGA3)ナノ粒子をナノ沈殿法によって製造し(例3を参照)、それから動的光散乱法により、サイズ(粒子径、z平均)およびサイズ分布(PDI)に関して特徴づけた。この特徴づけの後、ナノ粒子懸濁液に、特定の量の凍結保護剤を様々な濃度で添加した。懸濁液を−80℃の冷凍庫内で凍結し、続いてフリーズドライした(24h、−56℃、0.01mbar)。結果として生じる粉末約2mgを超純水1mL中で再び再懸濁し、その後、改めて動的光散乱法により、粒子径(z平均)およびPDIに関して特徴づけた。凍結乾燥後に記録した値を、調製直後に決定した値で割ることで比を決定した。
PLGA3)5mgをアセトン2.5mL中で溶解し、続いてシリンジポンプにより規定の速度で、連続撹拌下で、P(EtOx)61水溶液4.5mLを有する容器に入れた。その後、一晩中、連続撹拌下で有機溶媒を蒸発させ、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。
規定の量のP(EtOx)61を超純水1mL中で溶解した。PLGA3)10mgを酢酸エチル0.5mL中で溶解し、慎重に界面活性剤溶液にピペッティングし、続いて超音波フィンガーで処理した(出力:40W、サイクル:100%、振幅:100%、時間:10秒)。続いて粒子懸濁液を超純水で10倍に希釈し、それから有機溶媒を蒸発させるため一晩中、室温で撹拌し、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。
PLGA3)5mgをアセトン2.5mL中で溶解し、続いてシリンジポンプにより規定の速度で、連続撹拌下で、P(EtOx)nまたはP(MeOx)n水溶液4.5mLを有する容器に入れた。その後、一晩中、連続撹拌下で有機溶媒を蒸発させ、それからナノ粒子をその粒子径およびPDIに関して動的光散乱法によって特徴づけた。懸濁液の一部を−80℃の冷凍庫内で凍結し、続いて一晩中、凍結乾燥した。その後、結果として生じる粉末約2mgを超純水1mL中に再懸濁し、改めて特徴づけた。値の比は、凍結乾燥後の対応する測定値を調製後の測定値で割ることによって求めた。
規定の量のP(EtOx)nまたはP(MeOx)nを超純水1mL中で溶解した。PLGA3)10mgを酢酸エチル0.5mL中で溶解し、慎重にサーファクタント溶液にピペッティングし、続いて超音波フィンガーで処理した(出力:40W、サイクル:100%、振幅:100%、時間:10秒)。続いて粒子懸濁液を超純水で10倍に希釈し、それから有機溶媒を蒸発させるため一晩中、室温で撹拌し、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。懸濁液の一部を−80℃の冷凍庫内で凍結し、続いて一晩中、凍結乾燥した。その後、粒子約2mgを超純水1mL中に再懸濁し、改めて特徴づけた。値の比は、凍結乾燥後の対応する測定値を調製後の測定値で割ることによって求めた。
P(EtOx)nまたはP(MeOx)n100mgを超純水1mL中で溶解した。シェルポリマー10mgを酢酸エチル0.5mL中で溶解し、慎重に界面活性剤溶液にピペッティングし、続いて超音波フィンガーで処理した(出力:40W、サイクル:100%、振幅:100%、時間:10秒)。続いて粒子懸濁液を超純水で10倍に希釈し、それから有機溶媒を蒸発させるため一晩中、室温で撹拌し、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。表に記載しているように、ナノ粒子に異なる精製を施した。その後、結果として生じるすべての粒子懸濁液を−80℃の冷凍庫内で凍結し、続いて一晩中、凍結乾燥した。その後、粉末約2mgを超純水1mL中に再懸濁し、改めて特徴づけた。値の比は、凍結乾燥後の対応する測定値を調製後の測定値で割ることによって求めた。
PLGA3)5mgをアセトン2.5mL中で溶解し、続いてシリンジポンプにより規定の速度で、連続撹拌下で、P(EtOx)61水溶液4.5mLを有する容器に入れた。その後、一晩中、連続撹拌下で有機溶媒を蒸発させ、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。表に記載しているように、ナノ粒子に異なる精製を施した。その後、結果として生じるすべての粒子懸濁液を−80℃の冷凍庫内で凍結し、続いて一晩中、凍結乾燥した。その後、粉末約2mgを超純水1mL中に再懸濁し、改めて特徴づけた。値の比は、凍結乾燥後の対応する測定値を調製後の測定値で割ることによって求めた。
PLGA3)10mgおよびアセトン中1mg mL−1ストック溶液からのナイルレッド0.1mgから、例3でのようにナノ粒子をナノ沈殿法またはナノ乳化法によって製造した。(水溶液中に存在する場合には)界面活性剤濃度として、ナノ乳化法に関しては1%およびナノ沈殿法に関しては0.3%の最終濃度を目標とした。
PLGA3)10mgをアセトン1mL中で溶解した。PKC4127)0.3mgをDMSO8)30μL中で溶解し、PLGA3)溶液に加えた。その後、このポリマー・作用物質溶液をシリンジポンプにより規定の速度で、連続撹拌下で、場合によっては界面活性剤を含有する水溶液10mLを有する容器に入れた。その後、一晩中、連続撹拌下で有機溶媒を蒸発させ、それからナノ粒子をその粒子径およびPDIに関して特徴づけた。その後、結果として生じるすべての粒子懸濁液を−80℃の冷凍庫内で凍結し、続いて一晩中、凍結乾燥した。その後、粒子約2mgを超純水または対応するポリ(2−オキサゾリン)の0.5%溶液1mL中に再懸濁し、改めて特徴づけた。
Claims (18)
- 水溶性ポリ(オキサゾリン)と、ポリオレフィン、ポリビニル芳香族、ポリビニルエステル、ポリエステル、ポリアミド、ポリイミド、ポリカルボン酸、ポリカルボン酸エステル、ポリカルボン酸アミド、ポリニトリル、ポリスルホン酸、ポリケトン、ポリスルホン、ポリマー性ポリオール、ポリウレタン、タンパク質、ポリマー性炭水化物、核酸の群またはこれらのポリマーの2種以上の混合物から選択される有機ポリマー粒子とを含む組成物。
- 有機ポリマー粒子の平均直径D50が10μm未満であることを特徴とする、請求項1に記載の組成物。
- 有機ポリマー粒子の平均直径D50が1μm未満であることを特徴とする、請求項2に記載の組成物。
- 有機ポリマー粒子が、50〜999nmの範囲内の直径を有することを特徴とする、請求項1〜3のいずれか一つに記載の組成物。
- 有機ポリマー粒子が、親水性液体中の分散相を形成していることを特徴とする、請求項1〜4のいずれか一つに記載の組成物。
- 有機ポリマー粒子が、親水性液体中に懸濁していることを特徴とする、請求項5に記載の組成物。
- 有機ポリマー粒子が固体形態で存在し、ポリ(オキサゾリン)によって包まれていることを特徴とする、請求項1〜6のいずれか一つに記載の組成物。
- 有機ポリマー粒子が、ポリエステルを含有していることを特徴とする、請求項1〜7のいずれか一つに記載の組成物。
- ポリエステルが、ポリヒドロキシアルカノエートであることを特徴とする、請求項8に記載の組成物。
- ポリヒドロキシアルカノエートが、乳酸ホモポリマーまたは乳酸コポリマーであることを特徴とする、請求項9に記載の組成物。
- 水溶性ポリ(オキサゾリン)が、その総質量を基準として少なくとも80重量%の、式Iおよび/または式II
−NR1−CR3H−CR4H−(I)、 −NR1−CR3H−CR4H−CR5H−(II)
[式中、
R1は、式−CO−R2の残基を意味し、
R3、R4およびR5は互いに独立して、水素、メチル、エチル、プロピルまたはブチルを意味し、
R2は、水素、メチル、エチル、−CmH2m−Xまたは−(CnH2n−O)o−(CpH2p−O)q−R6からなる群から選択され、
R6は、水素またはC1〜C6−アルキルであり、
mは、1〜6の整数であり、
Xは、ヒドロキシル、アルコキシ、アミノ、N−アルキルアミノ、N,N−ジアルキルアミノ、カルボキシル、カルボン酸エステル、スルホニル、スルホン酸エステルまたはカルバメートからなる群から選択され、
nおよびpは互いに独立して、2〜4の整数であり、nとpは異なり、ならびに
oおよびqは独立して、0〜60の整数であり、oまたはqの少なくとも一方は0ではない]
の繰り返し構造単位を有することを特徴とする、請求項1〜10のいずれか一つに記載の組成物。 - R2が水素、メチルもしくはエチルであり、R3〜R5が水素を意味するか、またはR2が水素、メチルもしくはエチルであり、残基R3〜R5のうちの2つが水素であり、残基R3〜R5のうちの1つがメチルもしくはエチルであることを特徴とする、請求項11に記載の組成物。
- 水溶性ポリ(オキサゾリン)が、その総質量を基準として少なくとも90重量%の、R2がメチルまたはエチルを意味する式Iの繰り返し構造単位を有することを特徴とする、請求項11または12に記載の組成物。
- 有機ポリマー粒子が、1種または複数の医薬作用物質を含有していることを特徴とする、請求項1〜13のいずれか一つに記載の組成物。
- 親水性液体中での、ポリオレフィン、ポリビニル芳香族、ポリビニルエステル、ポリエステル、ポリアミド、ポリイミド、ポリカルボン酸、ポリカルボン酸エステル、ポリカルボン酸アミド、ポリニトリル、ポリスルホン酸、ポリケトン、ポリスルホン、ポリマー性ポリオール、ポリウレタン、タンパク質、ポリマー性炭水化物、核酸の群またはこれらのポリマーの2種以上の混合物から選択される有機ポリマー粒子の安定化のための、水溶性ポリ(オキサゾリン)の使用。
- フリーズドライの際の、ポリオレフィン、ポリビニル芳香族、ポリビニルエステル、ポリエステル、ポリアミド、ポリイミド、ポリカルボン酸、ポリカルボン酸エステル、ポリカルボン酸アミド、ポリニトリル、ポリスルホン酸、ポリケトン、ポリスルホン、ポリマー性ポリオール、ポリウレタン、タンパク質、ポリマー性炭水化物、核酸の群またはこれらのポリマーの2種以上の混合物から選択される有機ポリマー粒子の安定化のための、水溶性ポリ(オキサゾリン)の使用。
- 親水性液体中での、ポリオレフィン、ポリビニル芳香族、ポリビニルエステル、ポリエステル、ポリアミド、ポリイミド、ポリカルボン酸、ポリカルボン酸エステル、ポリカルボン酸アミド、ポリニトリル、ポリスルホン酸、ポリケトン、ポリスルホン、ポリマー性ポリオール、ポリウレタン、タンパク質、ポリマー性炭水化物、核酸の群またはこれらのポリマーの2種以上の混合物から選択される有機ポリマー粒子の製造または回収の際の安定化剤としての、水溶性ポリ(オキサゾリン)の使用。
- ポリオレフィン、ポリビニル芳香族、ポリビニルエステル、ポリエステル、ポリアミド、ポリイミド、ポリカルボン酸、ポリカルボン酸エステル、ポリカルボン酸アミド、ポリニトリル、ポリスルホン酸、ポリケトン、ポリスルホン、ポリマー性ポリオール、ポリウレタン、タンパク質、ポリマー性炭水化物、核酸の群またはこれらのポリマーの2種以上の混合物から選択される粉末状の有機ポリマー粒子の安定化のための、水溶性ポリ(オキサゾリン)の使用。
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