1050-基于生物分子凝聚体的细胞内蛋白质降解工具 episode artwork

EPISODE · May 29, 2026 · 15 MIN

1050-基于生物分子凝聚体的细胞内蛋白质降解工具

from 聊聊Sci

本文介绍了一种基于生物分子凝聚体(BMCs)的新型细胞内蛋白质降解工具,旨在实现对致病蛋白的精准清除。研究者利用液-液相分离(LLPS)技术将抗体浓缩于纳米级凝聚体中,并通过金属酚醛网络(MPN)外壳进行稳定,显著提升了抗体进入细胞的效率及在胞质中的稳定性。该系统集成了抗体引导的识别机制与蛋白酶体募集基序,能够特异性地降解肿瘤相关的 KRAS G12V 突变蛋白,同时不影响正常的野生型蛋白。实验结果显示,该方案在异种移植瘤模型中表现出强大的抑瘤效果,且具有良好的生物安全性。此外,这种策略具备高度的模块化特性,只需更换抗体即可扩展至 α-突触核蛋白等其他疾病靶点。这种无需基因修饰的泛素非依赖性降解平台,为精准医疗和靶向蛋白质降解(TPD)提供了全新的技术路径。References:Li Y, Jin Z, Ahmed S U, et al. Biomolecular Condensates as Protein Degradation Tools for Intracellular Targets[J]. Nature Communications, 2026.前往小宇宙评论区与主播互动

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1050-基于生物分子凝聚体的细胞内蛋白质降解工具

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