JP2022534278A - 血液脳関門(bbb)の保護及び修復のための組成物 - Google Patents
血液脳関門(bbb)の保護及び修復のための組成物 Download PDFInfo
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- JP2022534278A JP2022534278A JP2021570515A JP2021570515A JP2022534278A JP 2022534278 A JP2022534278 A JP 2022534278A JP 2021570515 A JP2021570515 A JP 2021570515A JP 2021570515 A JP2021570515 A JP 2021570515A JP 2022534278 A JP2022534278 A JP 2022534278A
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Abstract
Description
al.,2018[16])。脳内皮の下にある基底膜は、BBBの動力学に積極的に関与し、3層から構成される。第一の層は、内皮細胞によって合成され、ラミニン4及び5の存在を特徴とする。第二の層は、ラミニン1及びラミニン2の存在を特徴とし、アストロサイトによって合成される。コラーゲンIVの存在を特徴とする第三の層は、前記の二つの層の間でみられ、二つの細胞型によって形成される。これらの3つの層はまた、さまざまな種類のコラーゲン、糖タンパク質及びプロテオグリカン、特に、ヘパラン硫酸プロテオグリカン(HSPG)で構成される(Cardoso et al.,2010[4])。
以下の一般式(I)
AaXxYy (I)
の生体適合性ポリマーを含み、式中:
Aはモノマーを表し、
Xは、R1COOR2基、又は-R9(C=O)R10を表し、
Yは、以下の式-R3OSO3R4、-R5NSO3R6、-R7SO3R8のうちの一つに対応するO又はN-スルホネート基を表し、ここで:
R1、R3、R5及びR9は、独立して、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であって良く、任意選択的に、ベンジルアミン及びベンジルアミンスルホネートを除いて一つ以上の芳香環を含んでもよいものを表し、R2、R4、R6及
びR8は、独立して、水素原子又はM+カチオンを表し、R7及びR10は、独立して、結合、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよいものを表し、
aはモノマーの数を表し、
xはX基によるモノマーAの置換度を表し、
yはY基によるモノマーAの置換度を表す。
以下の一般式(I)
AaXxYy (I)
の生体適合性ポリマーを含み、
式中:
Aはモノマーを表し、
Xは、R1COOR2基、又は-R9(C=O)R10を表し、
Yは、以下の式-R3OSO3R4、-R5NSO3R6、-R7SO3R8のうちの一つに対応するO又はN-スルホネート基を表し、ここで:
R1、R3、R5及びR9は、独立して、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよく、そして任意選択的に、ベンジルアミン及びベンジルアミンスルホネートを除いて一つ以上の芳香環を含んでもよいものを表し、R2、R4、R6及びR8は、独立して、水素原子又はM+カチオンを表し、そしてR7及びR10は、独立して、結合、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよいものを表し、
aはモノマーの数を表し、
xはX基によるモノマーAの置換度を表し、
yはY基によるモノマーAの置換度を表す。
(式中、R11及びR12は、独立して、酸素原子、任意選択的に分岐及び/又は不飽和であってよい脂肪族炭化水素鎖、独立して一つ以上の酸素及び/又は窒素原子を含むヘテロアリール基、アルデヒド官能基、カルボン酸基、ジオール、置換ジオール、式-R13-(X)n-R14(式中、R13は、C1-C4脂肪族炭素鎖であって、任意選択的に分岐及び/又は不飽和であってよいものを表し、Xは、酸素及び窒素から選択されるヘテロ原子を表し、nは、1~4の範囲の整数であり、R14は、水素原子、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよいもの、独立して一つ以上の酸素原子及び/又は窒素を含むヘテロアリール基、アルデヒド官能基、カルボン酸基、ジオール、置換ジオールである)の基を表す)
のモノマーであり得る。
きる。したがって、本発明のポリマーは、例えば、Z基が抗酸化剤化合物、老化防止化合物から選択される場合、本発明のポリマーは、これらの化合物を有利に運ぶことができ、したがって、付加的及び/又は補完的生物学的効果を提供できる。
くは0.01~1.5mg/kgの生体適合性ポリマーの用量を毎日又は2週間に1回の投与頻度で送達するために投与することができる。
ダルトン、好ましくは70,000~150,000ダルトンであり得る。
。それらはまた、当業者に知られている医薬製品、例えば、抗生物質、抗炎症剤、抗凝固剤、神経保護薬、アセチルコリンエステラーゼ阻害剤、抗うつ薬、抗ウイルス薬であり得る。
A/生体適合性ポリマーの調製
生体適合性ポリマーであるRGTAの合成は、先行技術で広く記載されており、例えば、「Process for the sulfonation of compounds comprising free hydroxyl(OH)groups or primary or secondary amines」という表題の米国特許第7,396,923号や、書誌文献Yasunori I.et al.,Biomaterials 2011,32:769e776)及びPetit E. et al., Biomacromolecules.2004 Mar-Apr;5(2):445-52[28]にも記載されている。
本実施例では、本発明による生体適合性ポリマーであるRGTAの、変化後、例えば、脳血管障害(CVA)後のBBBの透過性に対する効果の評価。
び7日で、造影剤Dotarem(登録商標)の注射後にMRIによって実施した。この造影剤は、生理学的条件下でBBBを通過しない。造影剤を大腿静脈から静脈内注射した。注射によって投与された造影剤の量は200μmol/kgであった(Dotarem(登録商標)、Guerbet S.A)。
al.2016[6])。この図表はまた、生体適合性ポリマーOTR4132でラットを処置することで、RGTAで処置されたラット群において虚血後24時間及び48時間でBBBの透過性を、対照溶液を投与された虚血群のラットと比較して、有意に減少させることが可能になることを明確かつ予想外に示す。特に、結果は、本発明による生体適合性ポリマーを含む組成物で処置されたラットと比較して、対照溶液で処置されたラット間での統計的に有意な差を示した(分散分析とそれに続くTukeyによる事後HSDテスト p<0.05)。
なわち、RGTA OTR4132を脳虚血の1時間後に投与して処置し、2.22μgのOTR4132の用量を含む投与した組成物の体積は、内頸動脈から動脈内投与した50μlであった。
神経学者によって指摘されるように、血液脳関門を変更させたいくつかのCVAに起因する神経学的障害、特に認知障害に罹っている75歳男性(75kg)を、生体適合性ポリマー、すなわち、化合物OTR4120で、45日にわたり30mlのOTR4120の100μg/ml水溶液の一日摂取量で治療した。投与された用量は75kgにつき3mg/日又は40μg/kg/日であった。投与後、神経学者によって、また担当医師若しくは委託医師や個人の家族によっても認識能力の改善が観察された。
kg)を、300μL~100μg/ml又は0.5μgのOTR4120の用量の週2回舌下摂取(0.5μg/kgを週に2回)で治療した。6か月の治療後、この個人は、認知機能、社会的関係、例えば、彼女の周囲、特に近親者や医療関係者との関係の改善を示し、電話、外出、友人との面会、スクラブルゲームを楽しむこと等ができるようになった。これらの改善は、特に血液脳関門の機能の改善及び回復と関連していた。
Claims (15)
- 血液脳関門の保護、修復及び/又は回復のための薬剤として使用するための医薬組成物であって:
以下の一般式(I)
AaXxYy (I)
(式中:
Aはモノマーを表し、
Xは、R1COOR2基、又は-R9(C=O)R10を表し、
Yは、以下の式-R3OSO3R4、-R5NSO3R6、-R7SO3R8のうちの一つに対応するO又はN-スルホネート基を表し、ここで:
R1、R3、R5及びR9は、独立して、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよく、そして任意選択的に、ベンジルアミン及びベンジルアミンスルホネートを除いて一つ以上の芳香環を含んでもよいものを表し、R2、R4、R6及びR8は、独立して、水素原子又はM+カチオンを表し、そしてR7及びR10は、独立して、結合、または脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよいものを表し、
aはモノマーの数を表し、
xはX基によるモノマーAの置換度を表し、
yはY基によるモノマーAの置換度を表す)の生体適合性ポリマーを含む、組成物。 - 前記組成物がヒアルロン酸をさらに含む、請求項1に記載の組成物。
- 前記モノマーAが、同一又は異なって、糖、エステル、アルコール、アミノ酸、ヌクレオチド、核酸、タンパク質又はその誘導体から選択される、請求項1又は2に記載の組成物。
- 前記モノマーAが、同一又は異なって、糖又はその誘導体から選択される、請求項1~3のいずれかに記載の組成物。
- 前記モノマー数「a」が、式(I)の前記ポリマーの質量が2,000ダルトン以上となるようなものである、請求項1又は2に記載の組成物。
- xが10~150%である、請求項1~3のいずれかに記載の組成物。
- 前記置換度「y」が10~170%である、請求項1~6のいずれかに記載の組成物。
- 前記生体適合性ポリマーが、前記ポリマーにさらなる生物学的又は物理化学的特性を付与できる、X及びYとは異なる化学官能基Zをさらに含む、請求項1~7のいずれかに記載の組成物。
- 前記モノマーAのすべての「z」によって表されるZ基による前記置換度が1~50%である、請求項8に記載の組成物。
- 前記Z基が、前記ポリマーに対してより良好な溶解性又は親油性を付与できる物質である、請求項8又は9に記載の組成物。
- 前記Z基が、同一又は異なり、アミノ酸、脂肪酸、脂肪アルコール、セラミド、若しくはその誘導体、又はさらにはアドレス指定のためのヌクレオチド配列を含む群から選択されることを特徴とする、請求項8に記載の組成物。
- 前記R9及びR10基が、独立して、そして任意選択的にZ基で置換されていてもよい、請求項8~11のいずれかに記載の組成物。
- 前記バイオポリマーが、0.1~5mg/kg体重の用量で非経口的に、及び/又は0.1~5mg/kg体重の用量で経口的に、及び/又は0.1~100μg・ml-1の用量で頭蓋内に、前記血液脳関門の保護及び/又は修復/回復のために投与される、請求項1~12のいずれかに記載の組成物。
- ヒアルロン酸の濃度が1~10mg/mlである、請求項2~13のいずれかに記載の組成物。
- 以下の一般式(I):
AaXxYy (I)
(式中:
Aはモノマーを表し、
Xは、R1COOR2基、又は-R9(C=O)R10を表し、
Yは、以下の式-R3OSO3R4、-R5NSO3R6、-R7SO3R8のうちの一つに対応するO又はN-スルホネート基を表し、ここで:
R1、R3、R5及びR9は、独立して、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよく、そして任意選択的に、ベンジルアミン及びベンジルアミンスルホネートを除いて一つ以上の芳香環を含んでもよいものを表し、R2、R4、R6及びR8は、独立して、水素原子又はM+カチオンを表し、そしてR7及びR10は、独立して、結合、脂肪族炭化水素鎖であって、任意選択的に分岐及び/又は不飽和であってよいものを表し、
aはモノマーの数を表し、
xはX基によるモノマーAの置換度を表し、
yはY基によるモノマーAの置換度を表す)の生体適合性ポリマーを含む医薬組成物の、血液脳関門の保護、修復及び/又は回復のための薬剤を製造するための使用。
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