JP2022551233A - 異なる構造のglp-1アナログペプチド修飾二量体およびその調製方法のii型糖尿病の治療における用途 - Google Patents
異なる構造のglp-1アナログペプチド修飾二量体およびその調製方法のii型糖尿病の治療における用途 Download PDFInfo
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Abstract
Description
ただし、X8はL-α-アラニン(Ala)またはβ-アラニン(βAla)またはα-またはβ-アミノイソ酪酸(αまたはβAib)であり、
X26はリジン、側鎖εアミノがアルカン酸グルタミルで修飾されたリジンまたは側鎖εアミノがアルカン酸基で修飾されたリジンであり、
X34はArg、Lysまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンであり、
X35はGlyまたはAlaまたはβ-アラニンまたはα-アミノイソ酪酸またはβ-アミノイソ酪酸であり、
X26はリジン、側鎖εアミノがアルカン酸グルタミルで修飾されたリジンまたは側鎖εアミノがアルカン酸基で修飾されたリジンであり、
X34はArg、Lysまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンであり、
X35はGlyまたはAlaまたはβ-アラニンまたはα-またはβ-アミノイソ酪酸(Aib)であり、
X37はGly-COOH(グリシンカルボキシル末端)またはGly-NH2(グリシンアミド化末端)またはNH2(第36位アルギニンアミド化末端)またはOH(第36位アルギニンカルボキシル末端)構造であり、またはアロステリックな第1目的によって提供される最初の7~36位アミノ酸配列が同様の繰り返し配列のコピーで構成され、繰り返し配列中の第8位(X8)アラニンがグリシンまたはα-またはβ-アミノイソ酪酸(Aib)で置換され、システインがセリンまたはグリシンで置換され、繰り返し配列中のX26がアルギニンであり、またはC末端アミド基とポリエチレングリコール分子が接続されてPEG化修飾を形成し、前記PEG分子量が0.5~30KDである。
実施例1 単量体ペプチドと二量体の調製
1、樹脂膨潤:ジクロロ樹脂(C末端カルボキシルはジクロロベンジル樹脂から由来)またはアミノ樹脂(C末端アミド化配列はアミノ樹脂から由来)(中国天津市南開合成科学技術有限責任会社から購入)を反応ポットに入れ、ジクロロメタン(DCM、Dikma Technologies Inc.)15ml/g樹脂を加え、30分振動する。SYMPHONY型12チャンネルポリペプチドシンセサイザーを使用する(SYMPHONY番号、ソフトウェアVersion.201、Protein Technologies Inc.)。
検査方法は以下の通りである:
実施例2 本発明のGLP-1単量体およびホモ二量体(G2~9と2G2~9シリーズ)血糖降下効果の持続性:
2.1経口ブドウ糖負荷試験:単回投与、単回経口ブドウ糖投与後、0、10、20、40、60、および120分で血糖を測定するためにマウスの尾から血液を採取した。シングルショットOGTTの結果は、2G2または2G3群のグルコースピークが10分以内であるのに対し、NaCl-PB、Liraglutide、G2とG3群には高いピークがなく、二量体が吸収を大幅に遅らせたことを示した。時間の延長に伴い、2G2または2G3の血糖降下効果は単一のG2またはG3の血糖降下効果よりも強かったが、有意差はなかった(図1)。
実施例3 2型糖尿病モデルに対する二量体の治療効果
C57Bl6/Jマウスを標準的な食餌でSPFレベル環境に置かれ、水を自由に摂取できる条件を設置した。すべての実験操作は実験動物の倫理および使用制度の指導原則に従って実施された。標準食で数日給餌した後、5週齢のC57B16/J雄のマウスをNaCl-PB、T2Dモデル対照群、Liraglutiade、低中高二量体ペプチド2G3または2G1群の6群に分かれた。NaCl-PB群はブランク対照、T2Dモデル対照群はT2Dモデル対照群であり、NaCl-PB溶液を注射した。T2Dモデル群に実験の終了まで60 kcal%の高脂肪食餌(D12492, 常州鼠一鼠二生物技術有限責任会社)を給餌し、ブランク対照群に実験の終了まで標準食を給餌した。糖尿病モデルの構築方法:高脂肪をマウスに4週間給餌した後、75 mg / kgストレプトゾトシン(STZ、Sigma Chemical Company、USA)を腹腔内注射し、3日後に50 mg / kgSTZを再注射し、3週間後血中グルコースが11mMを超えたマウスを糖尿病マウスとみなした。これらの群には高脂肪給餌に加えて35日間の治療研究が行われた。
1、ペプチドの溶解度:Aibアミノ酸を含まない単量体ペプチドは水に懸濁状態を示したが、それらで構成されるすべてのホモ二量体ペプチドは水に完全に溶解した、Aibアミノ酸を含む単量体ペプチドは水に完全に溶解し、それらによって形成されたペプチドは、水にわずかに溶けにくくなった。これらのペプチドの中で、C末端アミド化ペプチドはC末端COOHペプチドよりも不溶性であった。すべての二量体ペプチドをNaCl-PB(pH8.0)に溶解して高い溶解度を達成し、2G3または2G1ペプチドの異なる用量(低、中、高用量)をそれぞれNa2HPO4(pH8.0)緩衝生理食塩水(NaCl-PB)に溶解して動物注射を行った。単量体ペプチドを生理食塩水(pH 6.5)に溶解して注射した。
実施例4 T2Dモデル治療における二量体の病理学的検出:
実施例5 グルカゴンアナログペプチド-1受容体(GLP-1R)分析
実施例6 インスリン免疫組織化学的分析
Claims (6)
- 単量体のグルカゴンアナログペプチド-1アナログペプチドであって、前記グルカゴンアナログペプチド-1アナログペプチドのアミノ酸配列が以下の4つのいずれか1つである。
(1)
His-X8-Glu-Gly-Thr-Phe-Thr-Cys-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala- X26-Glu-Phe-Ile-Ala-Trp-Leu-Val-X34-X35-Arg-X37;または
(2)
His-X8-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Cys-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala- X26-Glu-Phe-Ile-Ala-Trp-Leu-Val-X34-X35-Arg-X37;または
(3)
His-X8-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Cys-Tyr-Leu-Glu-Gly-Gln-Ala-Ala- X26-Glu-Phe-Ile-Ala-Trp-Leu-Val-X34-X35-Arg-X37;または
(4)
His-X8-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala- X26-Glu-Phe-Ile-Ala-Trp-Leu-Val-X34-X35-Arg-Gly-Cys-OH;
ただし、X8はL-α-アミノイソ酪酸-アラニンまたはβ-アラニンまたはα-アミノイソ酪酸またはβ-アミノイソ酪酸であり、
X26はリジンまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンまたは側鎖εアミノがアルカン酸基で修飾されたリジンであり、
X34はArgまたはLysまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンであり、
X35はGlyまたはAlaまたはβ-アラニンまたはα-アミノイソ酪酸またはβ-アミノイソ酪酸であり、
X37はGly-OHまたはGly-NH2またはNH2またはOH構造であり、またはアロステリックな上記の最初の7~36位のアミノ酸配列が同様の繰り返し配列のコピーで構成され、繰り返し配列中の第8位(X8)アラニンがグリシンまたはα-またはβ-アミノイソ酪酸(Aib)で置換され、システインがセリンまたはグリシンで置換され、繰り返し配列中のX26がアルギニンであり、またはC末端アミド基とポリエチレングリコール分子が接続されてPEG化修飾を形成し、前記PEG分子量が0.5~30KDである、ことを特徴とする単量体のグルカゴンアナログペプチド-1アナログペプチド。 - グルカゴンアナログペプチド-1アナログペプチドホモ二量体であって、前記二量体は、請求項1~2のいずれか1項に記載の単量体をシステインによって形成されたジスルフィド結合を介して接続することによって形成され、H型またはU型グルカゴンアナログペプチド-1アナログペプチドホモ二量体を構成し、前記二量体のアミノ酸配列は以下の4つのいずれか1つである。
X26はリジンまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンまたは側鎖εアミノがアルカン酸基で修飾されたリジンであり、
X34はArgまたはLysまたは側鎖εアミノがアルカン酸グルタミルで修飾されたリジンであり、
X35はGlyまたはAlaまたはβ-アラニンまたはα-アミノイソ酪酸またはβ-アミノイソ酪酸であり、
X37はGly-OHまたはGly-NH2またはNH2またはOH構造;またはアロステリックな請求項1に記載の最初の7~36位のアミノ酸配列が同様の繰り返し配列のコピーで構成され、繰り返し配列中の第8位(X8)アラニンがグリシンまたはα-またはβ-アミノイソ酪酸(Aib)で置換され、システインがセリンまたはグリシンで置換され、繰り返し配列中のX26がアルギニンであり、またはC末端アミド基とポリエチレングリコール分子が接続されてPEG化修飾を形成し、前記PEG分子量が0.5~30KDである、ことを特徴とするグルカゴンアナログペプチド-1アナログペプチドホモ二量体。 - 前記X26は側鎖εアミノがアルカン酸グルタミル[γ-Glu(N-α-アルカン酸基)]で修飾されたリジンである場合、その構造式が式1で示され、または前記X26は側鎖εアミノがアルカン酸基で修飾されたリジンである場合、その構造式が式2で示され、式1、2においてn=14または16である、ことを特徴とする請求項3に記載のグルカゴンアナログペプチド-1アナログペプチドホモ二量体。
- II型糖尿病の治療において膵臓保護または/および血糖降下薬物の調製における請求項1~2のいずれか1項に記載の単量体のグルカゴンアナログペプチド-1アナログペプチド、または請求項3~4のいずれか1項に記載のグルカゴンアナログペプチド-1アナログペプチドホモ二量体の用途。
- 請求項1~2のいずれか1項に記載の単量体のグルカゴンアナログペプチド-1アナログペプチド、または請求項3~4のいずれか1項に記載のグルカゴンアナログペプチド-1アナログペプチドホモ二量体を活性成分として使用する、ことを特徴とする膵臓保護またはII型糖尿病の治療薬物。
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