タウリンは,酵素による細胞内分子自己組み立てのための小型のDペプチドの細胞吸収を促進する
Jie Zhou1, Xuewen Du1, Jie Li1
1Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States.
Journal of the American Chemical Society
|August 4, 2015
まとめ
タウリン結合は,哺乳類の細胞におけるD-ペプチドの細胞吸収を10倍以上強化する. この戦略により細胞内自己組織化が可能になり,蓄積が改善され,Dペプチドの新たな生物医学的な応用が可能になる.
科学分野:
- 生物化学
- 分子生物学
- 生物医学工学
背景:
- Dペプチドは,生物医学的な用途で生物安定性を提供するが,タンパク質分解抵抗とトランスポーター相互作用の欠如のために細胞吸収が弱い.
- D-ペプチドの細胞への侵入の強化は,細胞内療法における有効な適用に不可欠である.
研究 の 目的:
- D-ペプチドの細胞吸収と細胞内蓄積に対するタウリン結合の効果を調査する.
- タウリン強化Dペプチドの細胞への侵入のメカニズムを解明する.
- タウリン結合Dペプチドの細胞内分子自己組み立ての可能性を調査する.
主な方法:
- タウリンと小さなDペプチドの結合
- 哺乳類の細胞における結合および結合しないDペプチドの様々な濃度を用いて細胞吸収の定量化.
- ダイナミン依存性エンドサイトーシスおよびマクロピノサイトーシス阻害剤を含むメカニズム研究
- 細胞内エステラーゼ活性とDペプチド誘導体の自己組成の分析
主要な成果:
- タウリン結合は,D-ペプチドの細胞吸収を10倍以上 (118μMから> 1.6μM) 増加させた.
- タウリン-Dペプチド結合体は,細胞内エステラゼ誘発による自己組み立てを行い,細胞の蓄積を促進する.
- 細胞への侵入は,タウリントランスポーターとは無関係なダイナミン依存性内細胞分裂とマクロピノ細胞分裂を経由して起こります.
結論:
- タウリン結合は,D-ペプチドの細胞吸収と細胞内蓄積を大幅に高める強力な戦略です.
- 酵素分解性タウリンモチーフは細胞内自己組織化を促進し,新たな治療の可能性を提供します.
- このアプローチは,細胞内アプリケーションのための生物活性分子の配送を改善するために,生物適合性と安定した方法を提供します.
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