共液介導的溶酶體靶向抗體遞送用於蛋白質降解
Dingdong Yuan1, Yishu Bao1, Zhiyi Xu1
1Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 25, 2026
まとめ
研究人員開發了靶向癌蛋白(CAP)進行降解的溶酶體分選肽共液(LSP-Coa)。這種共液介導的溶酶體靶向蛋白質降解(CoaLPD)策略在新癌症治療方面顯示出前景。
科学分野:
- 生物化學
- 細胞生物學
- 奈米技術
背景:
- 抗體癌療法靶向溶酶體內的癌蛋白 (CAP) 進行降解。
- 將抗體-CAP 複合物有效遞送到細胞內並特異性遞送到溶酶體仍然是一個挑戰。
- 現有的相分離共液可以進入細胞,但缺乏溶酶體靶向性。
研究 の 目的:
- 設計能夠靶向溶酶體進行蛋白質降解的新型共液。
- 透過降解 CAP 來開發新的癌症治療策略。
- 增強 PROTAC 等現有蛋白質降解技術的功效。
主な方法:
- 透過液-液相分離 (LLPS) 設計四胜肽以創建相分離的溶酶體靶向肽共液 (LSP-Coa)。
- 證明 LSP-Coa 可自發進行細胞攝取並與溶酶體共定位。
- 利用 LSP-Coa 封裝抗體-CAP 複合物以進行溶酶體遞送和降解(共液介導的溶酶體靶向蛋白質降解 - CoaLPD)。
主要な成果:
- LSP-Coa 可有效封裝蛋白質並促進蛋白質轉運至溶酶體。
- CoaLPD 成功降解了癌細胞和體內腫瘤模型中的膜結合 CAP,包括 HER2 和 EGFR。
- LSP-Coa 系統增強了溶酶體攝取,並提高了 PROTAC 介導的降解功效。
結論:
- 已成功設計和合成溶酶體靶向共液 (LSP-Coa)。
- CoaLPD 策略提供了一種靶向降解 CAP 的新機制,顯示出作為抗癌治療的潛力。
- LSP-Coa 可作為溶酶體特異性抗體遞送的有效載體,推動了靶向蛋白質降解療法的發展。
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