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Autonomously Motile Nano-PROTACs Act as Protein-Sweeping Robots to Enhance Targeted Protein Degradation
Xiang Lu1,2,3, Furui Qiu1, Huijie Liang1
1School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 4, 2026
Summary
Researchers developed self-propelling nanoparticle-based Proteolysis Targeting Chimeras (PROTACs) called nano-motoring PROTACs (nMPROs). These motile nanomachines actively seek and degrade target proteins within cells, significantly enhancing degradation efficiency compared to static nanoparticles.
Area of Science:
- Biotechnology
- Nanomedicine
- Molecular Biology
Background:
- Nanoparticle-based Proteolysis Targeting Chimeras (nPROs) offer improved drug delivery but are limited by slow intracellular diffusion.
- Efficient intracellular transport is crucial for the efficacy of targeted protein degradation therapies.
Purpose of the Study:
- To engineer motile nanoparticle-based PROTACs (nMPROs) that overcome diffusion limitations.
- To enhance the intracellular target-search efficiency and degradation potency of PROTACs.
Main Methods:
- Asymmetric modification of gold nanoparticles to display protein ligands, E3 recruiters, and catalase.
- Utilizing the H2O2-rich tumor microenvironment for catalase-driven oxygen generation and propulsion.
- Evaluating nMPROs for degradation of estrogen receptor alpha (ERα) and PD-L1.
Main Results:
- nMPROs exhibited autonomous directional propulsion within cells, driven by catalase-generated oxygen.
- Propulsion significantly enhanced intracellular target interrogation and degradation efficiency.
- Achieved a threefold increase in ERα degradation potency compared to static nPROs.
- Demonstrated modular degradation of PD-L1, showcasing platform generality.
Conclusions:
- Introduced a novel paradigm of self-propelling nanomachines for targeted protein degradation.
- nMPROs function as active "protein-sweeping robots" for enhanced intracellular degradation.
- This platform provides a foundation for developing next-generation, generalizable PROTAC nanoplatforms.
Keywords:
hook effectsproteolysis‐targeting chimerasself‐propelling nanoplatformtarget protein degradationMore Related Videos
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