JP2018021070A - キレート化複合ミセルを有する薬物キャリア及びその応用 - Google Patents
キレート化複合ミセルを有する薬物キャリア及びその応用 Download PDFInfo
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- JP2018021070A JP2018021070A JP2017194487A JP2017194487A JP2018021070A JP 2018021070 A JP2018021070 A JP 2018021070A JP 2017194487 A JP2017194487 A JP 2017194487A JP 2017194487 A JP2017194487 A JP 2017194487A JP 2018021070 A JP2018021070 A JP 2018021070A
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- UCFGDBYHRUNTLO-QHCPKHFHSA-N topotecan Chemical compound C1=C(O)C(CN(C)C)=C2C=C(CN3C4=CC5=C(C3=O)COC(=O)[C@]5(O)CC)C4=NC2=C1 UCFGDBYHRUNTLO-QHCPKHFHSA-N 0.000 description 1
- 229960000303 topotecan Drugs 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
- 230000005740 tumor formation Effects 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
Description
使用する組成物及び形成方法に関する。
を攻撃しながら正常細胞を保護することは焦点と考えられる。化学療法及び放射線療法の作用機構は、遊離基による損傷に部分的に起因するので、抗酸化剤及び遊離基を有する物質を選択的に利用すると、これらの治療は正常細胞への損傷を減らすことができる。
ルラジカル(OH)関連のスピントラップ信号、過酸化物アニオン及びドキソルビシン(doxorubicin)から誘導した過酸化物アニオンを効果的に除去することができる。WR−1065のROS除去効果はブレオマイシン誘発肺の炎症及び線維症を予防するために用いることができる。
一又は複数の層によって形成される球状の担体である。これらのリポソームの構造制約は内核で親水性薬物を運ぶことを許すだけである。これらのキャリアは、特に肝臓に蓄積する傾向があり、温度変化に非常に敏感で、格納が難しく、乾燥粉末形態で運送は簡単なことではない(非特許文献1を参照)。
薬物に適用できる。しがしながら、これらの金属含有薬物はルイス酸とし、キャリアと結合した場合に、その官能基が置換され、その構造の変化は新薬として考えられるので、薬物の安全性及び有効性を再び評価する必要がある。これはコストの大幅な増加を引きこす可能性があるため、新た薬物キャリアの開発は業界にとって主な目標である。
700ダルトン)、10mgのFeCl2を秤り取り、得られた混合原料を5mLの緩衝液に25℃で異なる時間攪拌した。薬物放出の模擬のために、それを分子量3500の透析膜内に置いた。結果は、24時間攪拌する場合に、アミフォスチンを透析膜外に放出する割合は比較的に低く、大部分の薬物は鉄イオンとPEG−b−PGAと直接自己組織化によってキレート化複合ミセルを形成し、透析膜内に留まれて放出していない。前述の緩衝液は0.05MのHEPES(4−(2−hydroxyethyl)−1−piperazinee −thanesulfonic acid)であり、そのpH値が7.0である。
長し、また、人体に対する毒性(EDTAは人体内での金属元素をつかむ)を起こさない
。一方、配位結合はイオン結合の弱い相互作用を補う。また、金属イオンは容易に沈殿す
るが、PEGは良い流体分散度を有しても他の物質を受ける官能基を持っていないので、
PGAの変性により金属イオンと結合することができ、キャリアを流体中で均質に分散さ
せ、金属イオンによる沈殿に起因するブロッキング現象を引き起こさない。注意すべき点
は本発明のキャリアを親水性薬物又は疎水性薬物に適用することができ、応用価値を非常
に高める。一方、FDA又は関連医薬品の試験規格に準拠する薬物にとって、原薬物の構
造を破壊すれば、非常に僅かな割合があるでも、新た薬物と見らされる可能性があり、安
全性及び有効性を再び検証する必要があり、コストが非常にかかる。それに対して、本発
明は薬物の構造に変更することなく、従って再確認の問題を起こさない。従って、プロセ
スの互換性のために、本発明は非常に高いコスト価値を有する。
きる。そして、それらは以下の特許請求の範囲内で解釈されるべきである。上述の詳細な
説明に加えて、本発明を広く他の実施例に実施することができる。以上の実施例は本発明
を説明するために提示されたものであり、本発明の範囲を制限するものではなく、本発明
の要旨より離脱せずに当業者がなしうる各種の変更或いは修飾は、本発明の請求範囲に属
するものとする。
110 細胞保護剤アミフォスチン
120 ポリ(エチレングリコール)−b−ポリ(グルタミン酸)
130 塩化第一鉄
Claims (6)
- ルイス酸とする金属イオン核と、
少なくとも1つの該金属イオン核と配位結合する配位子と、
該金属イオン核と互いに配位結合するルイス塩基である薬物とを含み、
前記金属イオン核はFeであり、前記薬物はアミフォスチン又は遊離チオール(WR−1065)から選択され、
前記配位子は、カルボン酸、アルコール、ケトン、フラン、アミン、アニリン、ピロー
ル、チオール、エステル、アミド、イミン、ピリジン、ピリミジン、イミダゾール、ピラ
ゾール、スルホンアミド及びホスホン酸からなる群から選ばれる1つの化合物、その任意
の組み合わせまたはその誘導体である、
ことを特徴とするキレート化複合ミセル。 - ルイス塩基とするポリマーと、ルイス酸とする金属イオン核を含み、
前記ポリマーはポリ(エチレングリコール)、ポリ(アスパラギン酸)、ポリ(グルタ
ミン酸)、ポリリジン、ポリ(アクリル酸)、キトサン、ポリエチレンイミン、ポリ(メ
タアクリル酸)、ヒアルロン酸、コラーゲン、ポリ(N−イソプロピルアクリルアミド)
、アミロース、セルロース、ポリヒドロキシブチレート、ポリ乳酸、ポリ(ブチレンスク
シネート)、ポリ(カプロラクトン)、カルボキシメチルセルロース、デキストラン及び
シクロデキストリンからなる群から選ばれる1つ、その任意の組み合わせまたはその誘導
体であり、
該金属イオン核と該ポリマーは互いに配位結合し、前記金属イオン核はFeであり、
該キレート化複合ミセルを有する薬物キャリアは、ルイス塩基とする薬物を輸送し、且つ該薬物は該金属イオン核と配位結合し、
前記薬物はアミフォスチン又は遊離チオール(WR−1065)から選択される、
ことを特徴とする、キレート化複合ミセルを有する薬物キャリア。 - 前記ポリマーは単座配位子、二座配位子、三座配位子、六座配位子及び多座配位子から
なる群から選ばれる1つであることを特徴とする請求項2に記載のキレート化複合ミセル
を有する薬物キャリア。 - 前記ポリマーの分子量は1000〜100000ダルトンの範囲にあることを特徴とす
る請求項2に記載のキレート化複合ミセルを有する薬物キャリア。 - ブロック共重合体と、
ルイス塩基とする官能基を含有する薬物と、
ルイス酸とする金属イオン核を含み、
前記ブロック共重合体は、ポリ(エチレングリコール)−b−ポリ(グルタミン酸)であり、該ポリ(グルタミン酸)は配位子とするためのキレート端であり、該ポリ(エチレングリコール)は医薬組成物を生体液中で安定に良く分散させるための分散端であり、前記ブロック共重合体は、ルイス塩基であり、
前記金属イオン核は二価鉄イオン又は三価鉄イオンであり、該金属イオン核は該ブロック共重合体及び該薬物とそれぞれ配位結合し、
前記薬物はアミフォスチン又は遊離チオール(WR−1065)から選択される、
ことを特徴とするキレート化複合ミセルを有する医薬組成物。 - 前記ポリ(エチレングリコール)−b−ポリ(グルタミン酸)の分子量は1000〜100000ダルトンの範囲にあることを特徴とする請求項5に記載のキレート化複合ミセルを有する薬物キャリア。
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JP6445648B2 (ja) | 2018-12-26 |
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CA2856501C (en) | 2017-01-03 |
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TW201321027A (zh) | 2013-06-01 |
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