JP7293237B2 - オートファジー回復用酸性ナノ粒子 - Google Patents
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- JP7293237B2 JP7293237B2 JP2020537623A JP2020537623A JP7293237B2 JP 7293237 B2 JP7293237 B2 JP 7293237B2 JP 2020537623 A JP2020537623 A JP 2020537623A JP 2020537623 A JP2020537623 A JP 2020537623A JP 7293237 B2 JP7293237 B2 JP 7293237B2
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Description
この出願は、2019年1月21日に出願された米国特許出願第16/252、927号および2018年1月19日に出願された米国特許仮出願第62/619、565号の利益、およびこれらの出願に対する優先権を主張し、これらの全内容はすべて、参照によりその全体が本明細書に組み込まれる。
(2)研究者が損なわれたリソソーム酸性化を標的とすることの利点を調査できるようにするためのツール。したがって、医薬品開発者がリソソーム酸性化を治療標的として検証できるようにする。
(3)標的細胞小器官への侵入を感知し、細胞小器官内で自己活性化されるNP。
(4)リソソームを他のオルガネラpHに干渉させることなく酸性化できる標的化された介入。
(5)インビボでのNP使用の前例を考慮した、インビボでの利用に適したリソソーム酸性化介入。
生分解性ポリエステルは脂肪毒性下の細胞におけるリソソーム酸性化を調節する。
分解性酸性ナノ粒子は脂肪毒性下の細胞のリソソームpHとオートファジーフラックスを回復する。
Claims (16)
- 酸放出フッ素化ポリエステルナノ粒子であって、
ポリエステルを含み、
前記ポリエステルは、テトラフルオロコハク酸(TFSA)を含み、
前記ナノ粒子は、該粒子が約pH6.0のpHを有する環境に曝されたときに酸を放出する、ナノ粒子。 - 前記ナノ粒子が、約pH7.0のpHでは、実質的に酸を放出しない、請求項1に記載のナノ粒子。
- 前記ポリエステルがコハク酸(SA)をさらに含み、
前記ポリエステルにおいて、前記テトラフルオロコハク酸(TFSA)と前記コハク酸(SA)との比率が100:0(TFSA:SA)~10:90(TFSA:SA)の範囲である、請求項1または2に記載のナノ粒子。 - 前記ポリエステルにおける前記テトラフルオロコハク酸(TFSA)と前記コハク酸(SA)との比率が、約10:90、約15:85、約20:80、約25:75、約30:70、約35:65、約40:60、約45:55、約50:50、約55:45、約60:40、約65:35、約70:30、約75:25、約80:20、約85:15、約90:10、約95:5、および約100:0からなる群から選択される比率を含む、請求項3に記載のナノ粒子。
- 前記ポリエステルが、エチレングリコール、プロピレングリコール、およびブチレングリコールからなる群から選択されるジオールを含む、請求項1~4のいずれか1項に記載のナノ粒子。
- 前記ナノ粒子が、10%のPEFSU(エチレングリコールおよびTFSA)、15%のPEFSU、20%のPEFSU、25%のPEFSU、30%のPEFSU、35%のPEFSU、40%のPEFSU、45%のPEFSU、50%のPEFSU、55%のPEFSU、60%のPEFSU、65%のPEFSU、70%のPEFSU、75%のPEFSU、80%のPEFSU、85%のPEFSU、90%のPEFSU、95%のPEFSU、100%のPEFSU、10%のPPFSU(プロピレングリコールおよびTFSA)、15%のPPFSU、20%のPPFSU、25%のPPFSU、30%のPPFSU、35%のPPFSU、40%のPPFSU、45%のPPFSU、50%のPPFSU、55%のPPFSU、60%のPPFSU、65%のPPFSU、70%のPPFSU、75%のPPFSU、80%のPPFSU、85%のPPFSU、90%のPPFSU、95%のPPFSU、100%のPPFSU、10%のPBFSU(ブチレングリコールおよびTFSA)、15%のPBFSU、20%のPBFSU、25%のPBFSU、30%のPBFSU、35%のPBFSU、40%のPBFSU、45%のPBFSU、50%のPBFSU、55%のPBFSU、60%のPBFSU、65%のPBFSU、70%のPBFSU、75%のPBFSU、80%のPBFSU、85%のPBFSU、90%のPBFSU、95%のPBFSU、および100%のPBFSUからなる群から選択される材料を含む、請求項1~5のいずれか1項に記載のナノ粒子。
- 前記ナノ粒子が、約25nmから、または約50nmから、約200nmまで、または約150nmまでの範囲の平均直径を有するか、または、
前記ナノ粒子が、約100nm未満の平均直径を有する、請求項1~6のいずれか1項に記載のナノ粒子。 - 前記ナノ粒子の集団が、約0.2以下、または約0.14以下の多分散指数(PDI)を有する、請求項1~7のいずれか1項に記載のナノ粒子。
- 前記ナノ粒子は、前記ナノ粒子が細胞に接触したときに、エンドサイトーシス経路を介してリソソームへの取り込みをもたらすサイズおよびゼータ電位を有する、請求項1~8のいずれか1項に記載のナノ粒子。
- 前記ナノ粒子または複数の前記ナノ粒子は、細胞に取り込まれたとき、または細胞に接触したときに、
リソソームの酸性化を損なう条件下で前記細胞内のオートファジーフラックスを回復させるのに有効であるか、
前記細胞におけるリソソーム-オートファゴソーム融合能力を増強するのに有効であるか、
リソソーム加水分解酵素活性を増強するのに有効であるか、
脂肪酸に曝された肝細胞または脂肪酸に曝されたB細胞においてリソソーム機能の短期および/または長期の回復を誘導するのに有効であるか、
肝細胞脂質含有量を正常化するのに有効であるか、または、
グルコースに応答してインスリンを分泌するB細胞の能力を増強するのに有効である、
請求項1~9のいずれか1項に記載のナノ粒子。 - 医薬製剤であって、
請求項1~10のいずれか1項に記載の複数のナノ粒子と、
薬学的に許容される担体と、を含み、
前記医薬製剤が単位用量製剤を含む、医薬製剤。 - 前記医薬製剤が、経口送達、等速性送達、経皮送達、非経口送達、エアロゾル投与、吸入による投与、静脈内投与、および直腸投与からなる群から選択される経路による投与用に製剤化される、請求項11に記載の医薬製剤。
- 哺乳動物の細胞におけるオートファジーを促進するため、
リソソーム機能の回復に有利に反応する哺乳動物の病状を治療するため、
損なわれたリソソーム酸性度に関連する疾患状態を有する哺乳動物を治療するため、または、
リソソーム加水分解酵素活性を増強するために使用される、請求項1~10のいずれか1項に記載の複数のナノ粒子、または、請求項11または12に記載の医薬製剤。 - 前記哺乳動物が、肥満、メタボリックシンドローム、2型糖尿病、非アルコール性脂肪肝疾患、および神経変性疾患からなる群から選択される疾患を有し、
前記神経変性疾患が、加齢性認知症、パーキンソン病、およびアルツハイマー病からなる群から選択される疾患を含む、請求項13に記載の組成物。 - 哺乳動物に移植される肝臓を灌流するために使用される、
請求項1~10のいずれか1項に記載の複数のナノ粒子、または、請求項11または12に記載の医薬製剤。 - 前記哺乳動物がヒトである、請求項13~15のいずれか1項に記載の複数のナノ粒子または医薬製剤。
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