JP2023529545A - ポリペプチドアルブミンナノ粒子、およびその調製方法と使用 - Google Patents
ポリペプチドアルブミンナノ粒子、およびその調製方法と使用 Download PDFInfo
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Abstract
Description
それぞれ、カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液を調製し、モル比で前記カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液を混合し、前記ポリペプチドアルブミンナノ粒子を得ることを含む調製方法を提供する。
カチオン性の両親媒性ポリペプチドを、水、40~60mMのトリスヒドロキシメチルアミノメタン塩酸塩緩衝液又は10~20mMのリン酸塩緩衝液に添加し、20~5000μMのカチオン性の両親媒性ポリペプチド溶液を得て、アルブミンを、水又は10~20mMのリン酸塩緩衝液に添加し、20~5000μMのアルブミン溶液を得るステップ(1);
カチオン性の両親媒性ポリペプチドとアルブミンのモル比(0.1~10):1で、カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液を混合し、水又はリン酸塩緩衝液を添加し、5~100℃で0.5~120min混合し、前記ポリペプチドアルブミンナノ粒子を得るステップ(2)を含む。
本実施例は、イリジウム配位オリゴアルギニンポリペプチドおよびヒト血清アルブミン(HSA)により組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、イリジウム配位オリゴアルギニンポリペプチドおよびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、イリジウム配位オリゴアルギニンポリペプチドおよびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、CH3CO-FWLFLRRRRRRRR-CONH2(FR)およびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、chol-RRRRRRRR-CONH2(CR)およびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、イリジウム配位オリゴアルギニンポリペプチドおよびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、イリジウム配位オリゴポリペプチドおよびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本実施例は、イリジウム配位オリゴポリペプチドおよびヒト血清アルブミンにより組付けて形成するポリペプチドアルブミンナノ粒子を提供する。前記ポリペプチドアルブミンナノ粒子の調製方法は、以下のステップを含む。
本試験例は、動的光散乱装置および透過型電子顕微鏡を用いて実施例1~8で調製したポリペプチドアルブミンナノ粒子の粒径を測定した。
本試験例は、カチオン性の両親媒性ポリペプチドの電荷数、およびカチオン性の両親媒性ポリペプチドとヒト血清アルブミンの割合の、ポリペプチドアルブミンナノ粒子の組付けに対する影響を考察した。
本試験例は、イリジウム配位オリゴアルギニンポリペプチドの腫瘍細胞活性に対する抑制能力を測定した。
ヒト血清アルブミンは、一本鎖ポリペプチドであり、AとBの2つのサブドメインに分けられている。各々のサブドメインは、さらにI、II、IIIの3つの部分に分けられてもよい。それには、3種の主な薬物結合サイトがあり、それぞれ、IIAに位置する薬物結合サイト1(Sudlowサイト1とも呼ばれる)、IIIAに位置する薬物結合サイト2(Sudlowサイト2とも呼ばれる)、およびIBに位置する薬物結合サイト3である。本試験例においてIr-cR8のヒト血清アルブミンにおける結合位置が測定されている。10μMのヒト血清アルブミンの水溶液、および10μMの、ヒト血清アルブミンと、ヒト血清アルブミンの薬物結合サイト1、2、3における競合化合物であるフェニルブタゾン、イブプロフェンおよびリドカインとの混合溶液を調製し、5分間混合した後、それぞれ、0、2、4、6、8、および10μMのIr-cR8を添加し、280nmの光で励起し、300~450nmにおける励起スペクトルを走査した。数式(1)から、競合化合物の有無下でのIr-cR8とアルブミンとの結合定数および結合サイトの数を算出した。
本試験例は、Ir-cR8-HSAナノ粒子、Ir-cR5-HSAナノ粒子およびIr-aR8-HSAナノ粒子の腫瘍の殺傷能力および殺傷メカニズムについて検討した。
本試験例は、Ir-cR8-HSAナノ粒子の安定性および安全性について分析した。
本試験例は、Ir-cR8-HSAナノ粒子の腫瘍ターゲティング性、および生体自身の抗腫瘍免疫反応の誘発の効果について検討した。
Claims (13)
- カチオン性の両親媒性ポリペプチドおよびアルブミンにより組付けて形成する、
ポリペプチドアルブミンナノ粒子。 - 前記カチオン性の両親媒性ポリペプチドが、疎水性部分および親水性部分を含む、
請求項1に記載のポリペプチドアルブミンナノ粒子。 - 前記親水性部分が、アルギニン、リジン又はヒスチジンのうちのいずれか1種又は少なくとも2種の組合せを含み、アルギニンであることが好ましい、
請求項1又は2に記載のポリペプチドアルブミンナノ粒子。 - 前記疎水性部分が、[Ir(ppy)2(H2O)2]OTf、疎水性アミノ酸又は脂質のうちのいずれか1種又は少なくとも2種の組合せを含む、
請求項1~3のいずれか一項に記載のポリペプチドアルブミンナノ粒子。 - 前記疎水性アミノ酸が、フェニルアラニン、ロイシン、イソロイシン、トリプトファン、バリン、メチオニン又はアラニンのうちのいずれか1種又は少なくとも2種の組合せを含み、
好ましくは、前記脂質が、コレステロールおよびその誘導体又は脂肪酸およびその誘導体のうちのいずれか1種又は少なくとも2種の組合せを含み、
好ましくは、前記カチオン性の両親媒性ポリペプチドの構造式が、式I又は式IIで表され、
好ましくは、前記カチオン性の両親媒性ポリペプチドの一段構造がCH3CO-XRn-CONH2又は脂質-Rn-CONH2であり、ただし、Xは、フェニルアラニン、ロイシン、イソロイシン、トリプトファン、バリン、メチオニン又はアラニンのうちのいずれか1種又は少なくとも2種の組合せを含み、nは、アルギニン残基の数で、1~12の整数である、
請求項1~4のいずれか一項に記載のポリペプチドアルブミンナノ粒子。 - 前記アルブミンが、哺乳動物アルブミンを含み、
好ましくは、前記哺乳動物アルブミンが、ヒト血清アルブミン及び/又は牛血清アルブミンを含む、
請求項1~5のいずれか一項に記載のポリペプチドアルブミンナノ粒子。 - 請求項1~6のいずれか一項に記載のポリペプチドアルブミンナノ粒子の調製方法であって、
カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液をそれぞれ調製し、前記カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液を混合して前記ポリペプチドアルブミンナノ粒子を得ることを含む、
調製方法。 - 前記カチオン性の両親媒性ポリペプチド溶液の濃度が20~5000μMであり、
好ましくは、前記アルブミン溶液の濃度が20~5000μMである、
請求項7に記載の調製方法。 - 前記カチオン性の両親媒性ポリペプチドと前記アルブミンのモル比が(0.1~10):1である、
請求項7又は8に記載の調製方法。 - 前記混合の温度が5~100℃であり、
好ましくは、前記混合の時間が0.5~120minである、
請求項7~9のいずれか一項に記載の調製方法。 - 前記調製方法は、
カチオン性の両親媒性ポリペプチドを、水、40~60mMのトリスヒドロキシメチルアミノメタン塩酸塩緩衝液又は10~20mMのリン酸塩緩衝液に添加し、20~5000μMのカチオン性の両親媒性ポリペプチド溶液を得て、アルブミンを、水又は10~20mMのリン酸塩緩衝液に添加し、20~5000μMのアルブミン溶液を得るステップ(1)と、
カチオン性の両親媒性ポリペプチドとアルブミンのモル比(0.1~10):1で、カチオン性の両親媒性ポリペプチド溶液とアルブミン溶液を混合し、水又はリン酸塩緩衝液を添加し、5~100℃で0.5~120min混合して前記ポリペプチドアルブミンナノ粒子を得るステップ(2)と、を含む、
請求項7~10のいずれか一項に記載の調製方法。 - 請求項1~6のいずれか一項に記載のポリペプチドアルブミンナノ粒子を含む医薬組成物であって、
好ましくは、前記医薬組成物が、薬学的に許容可能な担体、賦形剤又は希釈剤のうちのいずれか1種又は少なくとも2種の組合せをさらに含む、医薬組成物。 - 請求項1~6のいずれか一項に記載のポリペプチドアルブミンナノ粒子又は請求項12に記載の医薬組成物の、抗腫瘍薬物の調製における使用。
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