JP2022516574A - 新規ペプチドとその使用 - Google Patents
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- JP2022516574A JP2022516574A JP2021539599A JP2021539599A JP2022516574A JP 2022516574 A JP2022516574 A JP 2022516574A JP 2021539599 A JP2021539599 A JP 2021539599A JP 2021539599 A JP2021539599 A JP 2021539599A JP 2022516574 A JP2022516574 A JP 2022516574A
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Abstract
Description
関連出願の相互参照
この出願は、引用によりその全体が本明細書中に組み込まれている、2019年1月7日出願の米国仮特許出願第62/789,114号の利益を主張するものである。
配列表
この出願は、2020年1月3日に作成され、サイズが4,096バイトで、14461-003-228_SEQ_LISTING.txtと命名されたテキスト形式として、この出願と共に提出された配列表を引用により組み込んでいる。
(1.分野)
β-APP上のプレセニリン1及び/又はプレセニリン2結合ドメインに結合する新規ペプチド、並びにそれを含む医薬組成物、その方法及び使用が本明細書に提供される。
神経変性障害は、特定の神経集団の喪失及び対応する神経機能の喪失を特徴とする進行性疾患である。様々な神経変性障害の中で、進行性記憶障害及び認知機能低下を特徴とするアルツハイマー病(AD)が最もよく見られる。ADの最も明確な神経病理学的特徴は、罹患した脳内のアミロイドプラーク及び神経原線維のもつれの存在である。前者は、γ-セクレターゼの切断後に、アミロイド前駆タンパク質(APP; Serrano-Pozoらの文献, 2011, Cold Spring Harb Perspect Med. 1,1, a006189参照)のタンパク質分解産物であるアミロイドβ(Aβ)の細胞外沈着によって形成される(Zhangらの文献, 2011, Mol. Brain 4, 3参照)。
一態様では、(i) N末端アミノ酸Aspがアセチル化され、C末端アミノ酸Leuがアミド化される
本開示は、β-APP上のプレセニリン1及び/又は2結合ドメインに特異的に結合する新規ペプチド、それを含む医薬組成物、その方法及び使用を提供する。より具体的には、本開示は、β-APPのAβへのプロセシングを阻害し得るペプチド、それを含む医薬組成物、その方法及び使用を提供する。
本明細書に記載する開示の理解を容易にするために、いくつかの用語を下で定義する。
発明者らは、β-APP結合活性を有するプレセニリン-1の66番目から73番目のアミノ酸セグメントと同一である
一態様では、本開示は、本開示の少なくとも1つのペプチドを含む医薬組成物をさらに提供する。いくつかの実施形態では、医薬組成物は、本明細書に提供される治療有効量のペプチド及び医薬として許容し得る賦形剤を含む。
さらに別の態様では、本明細書に提供される様々なペプチドを作製する方法が本明細書に提供される。本明細書に提供されるペプチドは、様々な化学合成法、組換え方法、又はそれらの組み合わせによって作製することができる。
一態様では、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を減衰させる方法であって、本明細書に提供するペプチドと細胞とを接触させることを含む方法が本明細書に提供される。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内のベータアミロイド前駆体タンパク質(β-APP)とプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)の結合を少なくとも約10%減衰させる(例えば、部分的に減衰させる)。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約20%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約30%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約40%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約50%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約60%減衰させる。いくつかの実施形態は、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約70%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約80%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約90%減衰させる。いくつかの実施形態では、本明細書に提供されるペプチドは、細胞内でプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とベータアミロイド前駆体タンパク質(β-APP)の結合を少なくとも約95%減衰させる。
具体的な実施形態では、疾患若しくは病態の予防及び/又は治療に使用するための、本明細書に提供されるペプチドを含む組成物が本明細書に提供される。一実施形態では、疾患若しくは病態の予防に使用するための組成物であって、本明細書に提供されるペプチドを含む組成物が本明細書に提供される。一実施形態では、疾患若しくは病態の治療に使用するための組成物であって、本明細書に提供されるペプチドを含む組成物が本明細書に提供される。ある実施形態では、疾患又は障害は、アミロイド(若しくはアミロイドβ)関連疾患又は障害である。ある実施形態では、疾患又は障害は、アミロイド線維形成、凝集又は沈着に関連付けられる疾患又は障害である。ある実施形態では、疾患又は障害は神経疾患である。ある実施形態では、疾患又は障害は神経変性疾患である。ある実施形態では、疾患又は障害は、パーキンソン病(PD)、アルツハイマー病(AD)、外傷性脳損傷(TBI)、筋萎縮性側索硬化症(ALS)、多発性硬化症(MS)、又は認知症からなる群から選択される。ある実施形態では、疾患又は障害は、前頭側頭型認知症、ピック病に関連付けられる前頭側頭型変性症、血管性認知症、大脳皮質基底核変性症、虚血性血管性認知症(IVD)、レビー小体型認知症、及びアルツハイマー型認知症からなる群から選択される認知症又は認知症関連疾患若しくは障害である。ある実施形態では、疾患又は障害は眼障害である。ある実施形態では、眼障害は黄斑変性である。ある実施形態では、眼障害は加齢黄斑変性である。ある実施形態では、障害、疾患、又は病態は、ダウン症である。ある実施形態では、疾患又は障害は、伝染性海綿状脳症(羊のスクレイピー、ヒトのクロイツフェルト・ヤコブ病(CJD)、牛の牛海綿状脳症(BSE)など)、脳アミロイド血管障害、アミロイドーシスを伴う遺伝性脳出血、軽度の認知障害、孤発性封入体筋炎及び加齢黄斑変性からなる群から選択される。
本明細書に提供されるペプチドはまた、当業者に周知の包装材料を用いて製造品として提供することができる。米国特許第5,323,907号;同第5,052,558号;及び同第5,033,252号を参照されたい。医薬品包装材料の例としては、ブリスターパック、ボトル、チューブ、吸入器、ポンプ、袋、バイアル、容器、注射器、並びに選択される製剤及び意図される投与様式及び治療に適する任意の包装材料が挙げられるが、これらに限定されない。
以下は、本研究に用いられる様々な方法や材料の説明であり、本発明の作成方法及び使用方法の完全な開示並びに説明を当業者に提供するように述べられているものであり、本発明者らが発明とみなすものの範囲を限定するものでもなく、下の実験が実行され、実行され得る全ての実験であることを表すことを意図するものでもない。本時に書かれた例示的な記述は必ずしも実行されるわけではないが、むしろ本発明の教示に関連付けられるデータなどを生成するために説明が行われ得ることを理解されたい。使用される数値(例えば、量、パーセンテージなど)に関して正確性を確実にするための努力がなされているが、いくつかの実験的な誤り及び偏差を考慮する必要がある。
P8ペプチド及びその変異体を、固相ペプチド合成により合成した。ペプチドは、p-ベンジルオキシベンジルアルコール樹脂(Wang resin)を用いることによって調製した。全てのアミノ酸を、9-フルオレニルメトキシカルボニル(Fmoc)-誘導体(Nova Biochem)として結合させた。tert-ブチル基を側鎖の保護基として適用した。8M2及び8M2Dについては、20%無水酢酸溶液を樹脂に添加することにより、アセチル化修飾を行った。8M1、8M2、8M1D、及び8M2Dについては、ヘキサフルオロリン酸アザベンゾトリアゾールテトラメチルウロニウム(HATU)及びジイソプロピルエチルアミン(DIPEA)を添加することによってアミド化を実行し、次いで、アンモニアガスを通過させて進めた。合成完了後に、ペプチドを樹脂から切断した。粗生成物を、使用前に約98%を超える程度まで逆相カラム(RP-HPLC)上の高速液体クロマトグラフィーによって精製した。
表1. P8及びその変異体ペプチドのペプチド配列
P8、8M1、及び8M1Dを実施例1に従って生成し、純度は98.0%~99.0%の範囲であった。1.00mMの一次ストック溶液を、各ペプチドに対してアセトニトリル又はアセトニトリル:水(1:1、v/v)のいずれかで調製した。0.200mMの作業用ストックを、アセトニトリル:水(1:1、v/v)の一次ストックから作製し、反応のために使用した。一次ストック溶液及び作業用ストック溶液を、使用しないときには-20℃で保存し、使用時にはできるだけ短時間、室温で保管した。新鮮なヒトの血漿を、抗凝固剤としてヘパリンナトリウムを添加することによって維持した。
表2.1. ペプチドのためのHPLC線形勾配プログラム
表3. ペプチド及びバラシクロビルの質量分析計の条件
表4. P8、8M1、及び8M1Dの代謝安定性アッセイの結果
血漿及びCSFにおけるペプチドP8、8M1D及び8M2Dの薬物動態(PK)を決定するために、ラットでインビボ研究を行った。静脈内(IV)及び皮下(SC)の2つの投与経路を介して各ペプチドを評価した。各ペプチドを用いて各用量群に3匹のラットを割り当てた。ペプチド当たり合計12匹のラットを使用した。研究設計を表5に示す。
表5. 各ペプチドについてのラットにおける薬物動態研究の設計
表6. ラットにおけるP8のPK研究の結果
表9. ラットにおけるP8のPK研究の結果
表12. トランスジェニックマウスにおける8M2DのPK分析
ラット(ペプチドあたりn=3)にP8、8M1D、又は8M2D(10mg/kg)を皮下投与し、血漿を投与後0、6、12、及び24時間に時点で採取し、Aβ40分析をELISA (Invitrogen)によって実行した。
表13. P8、8M1D及び8M2Dで治療したラットの血漿におけるAβ40の減少率
(結果はペプチドあたり3匹のラットの平均値を示す)
ADのような疾患に対する任意の治療剤の開発に重要なのは、それを脳に送達できるという必須要件である。Aβの低下におけるP8及び8M2Dの脳への送達並びに有効性を、上の節6.3に記載したトランスジェニックマウスで分析した。
表14. 脳の濃度
この実施例では、網膜におけるAβの蓄積を研究した。アルツハイマー病患者由来の人工多能性幹細胞(iPSC)から網膜細胞を分化させた。結果は、これらの網膜細胞がAβの産生の増加を示し、P8又は8M2Dの存在下で低下させることができることを示している。
Claims (23)
- 配列番号3、配列番号4又は配列番号5の配列を含む第1のドメイン、及び第2のドメインを含むペプチド。
- 前記第2のドメインがFcドメインを含む、請求項5記載のペプチド。
- 前記第2のドメインが精製ペプチドを含む、請求項5記載のペプチド。
- 請求項1~7のいずれか一項に記載のペプチド及び医薬として許容し得る賦形剤を含む医薬組成物。
- 細胞内のプレセニリン-1(PS-1)及び/又はプレセニリン-2(PS-2)とβ-アミロイド前駆体タンパク質(β-APP)の結合を減衰させる方法であって、請求項1~7のいずれか一項に記載のペプチド又は請求項8記載の医薬組成物と細胞とを接触させることを含む、前記方法。
- 細胞内のアミロイドβの産生を減衰させるか、アミロイドβ活性を減衰させるか、タウタンパク質の産生を減衰させるか、又はタウタンパク質活性を減衰させる方法であって、請求項1~7のいずれか一項に記載のペプチド又は請求項8記載の医薬組成物と前記細胞とを接触させることを含み、必要に応じて、アミロイドβ活性がアミロイドβ誘導シグナル伝達であり、必要に応じて、タウタンパク質活性がタウタンパク質誘導シグナル伝達である、前記方法。
- 対象においてアミロイドβの産生を減衰させるか、アミロイドβ活性を減衰させるか、タウタンパク質の産生を減衰させるか、又はタウタンパク質活性を減衰させる方法であって、請求項1~7のいずれか一項に記載の治療有効量のペプチド又は請求項8記載の医薬組成物を前記対象に投与することを含み、必要に応じて、アミロイドβ活性がアミロイドβ誘導シグナル伝達であり、必要に応じて、タウタンパク質活性がタウタンパク質誘導シグナル伝達である、前記方法。
- 前記アミロイドβがアミロイドβ40である、請求項10又は11記載の方法。
- 前記アミロイドβがアミロイドβ42である、請求項10又は11記載の方法。
- 対象における疾患又は障害を治療する方法であって、治療有効量の請求項1~7のいずれか一項に記載のペプチド又は請求項8記載の医薬組成物を前記対象に投与することを含む、前記方法。
- 前記疾患又は障害が、アミロイド(若しくはアミロイドβ)関連疾患又は障害、アミロイド線維形成に関連付けられる疾患又は障害、凝集又は沈着、神経疾患、又は神経変性疾患である、請求項14記載の方法。
- 前記疾患又は障害が、アルツハイマー病、パーキンソン病、外傷性脳損傷、筋萎縮性側索硬化症、多発性硬化症、及び認知症からなる群から選択される、請求項14記載の方法。
- 前記疾患又は障害が、前頭側頭型認知症、ピック病に関連付けられる前頭側頭型変性症、血管性認知症、大脳皮質基底核変性症、虚血性血管性認知症(IVD)、レビー小体型認知症、及びアルツハイマー型認知症からなる群から選択される認知症又は認知症関連疾患若しくは障害である、請求項14記載の方法。
- 前記疾患又は障害が、眼障害又はダウン症である、請求項14記載の方法。
- 前記眼障害がアルツハイマー病に関連する、請求項18記載の方法。
- 前記眼障害が黄斑変性であり、必要に応じて、前記黄斑変性が加齢黄斑変性(AMD)である、請求項18記載の方法。
- 前記疾患又は障害が、伝達性海綿状脳症、脳アミロイド血管症、アミロイドーシスを伴う遺伝性脳出血、軽度認知障害、孤発性封入体筋炎及び加齢黄斑変性からなる群から選択される、請求項14記載の方法。
- 対象の記憶を改善する方法であって、治療有効量の請求項1~7のいずれか一項記載のペプチド又は請求項8記載の医薬組成物を対象に投与することを含む、前記方法。
- 前記対象がヒト対象である、請求項11~22のいずれか一項に記載の方法。
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JP2012526557A (ja) * | 2009-05-12 | 2012-11-01 | ザ レジェンツ オブ ザ ユニヴァースティ オブ カリフォルニア | 神経変性障害およびアルツハイマー病を処置し、正常な記憶を改善するための方法および組成物 |
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US6777388B1 (en) * | 1998-08-21 | 2004-08-17 | Clf Medical Technology Acceleration Program, Inc. | Leptin-related peptides |
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CA2799162A1 (en) * | 2010-05-13 | 2011-11-17 | The University Of Kentucky Research Foundation | Treatment of mci and alzheimer's disease |
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JP2012526557A (ja) * | 2009-05-12 | 2012-11-01 | ザ レジェンツ オブ ザ ユニヴァースティ オブ カリフォルニア | 神経変性障害およびアルツハイマー病を処置し、正常な記憶を改善するための方法および組成物 |
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