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Updated: Aug 14, 2026

High-Throughput Cellular Profiling of Targeted Protein Degradation Compounds Using HiBiT CRISPR Cell Lines
Published on: November 9, 2020
A destination-driven framework for nanoparticle-enabled targeted protein degradation
Yazhen Wang1,2,3, Xue Xia2, Shengwei Xie1,3
1State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
Targeted protein degradation (TPD) strategies are classified by location: intracellular TPD (iTPD) and extracellular TPD (eTPD). Overcoming the delivery gap requires location-specific nanoplatform design for effective protein elimination.
Area of Science:
- Biochemistry
- Nanotechnology
- Drug Delivery
Background:
- Targeted protein degradation (TPD) offers a novel therapeutic approach by eliminating disease-causing proteins.
- TPD strategies are categorized into intracellular (iTPD) and extracellular (eTPD) based on protein subcellular localization.
- A significant "delivery gap" hinders clinical translation, particularly concerning nanocarrier design.
Purpose of the Study:
- To classify TPD strategies based on subcellular localization (iTPD vs. eTPD).
- To highlight the distinct nanodelivery requirements for iTPD and eTPD.
- To advocate for a location-aware design philosophy in nanomedicine for TPD.
Main Methods:
- Review and classification of existing TPD strategies.
- Analysis of nanotechnological approaches for iTPD and eTPD.
- Discussion of challenges and tailored solutions for nanocarrier development.
Main Results:
- iTPD nanocarriers primarily need to improve pharmacokinetics.
- eTPD nanoplatforms must enhance cellular engagement, internalization, and lysosomal trafficking.
- Nanoparticles are emerging as intrinsic degraders, blurring the lines between delivery and degradation.
Conclusions:
- A destination-based framework aids technology selection for TPD.
- Tailored nanoplatforms are crucial for overcoming the delivery gap in both iTPD and eTPD.
- Location-aware design is essential to realize the full therapeutic potential of TPD.
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