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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells
Published on: January 5, 2024
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Nanoparticle Anisotropy Increases Targeting Interactions on Live-Cell Membranes.
Bundit Diloknawarit1, Kwahun Lee2,3, Priscilla Choo2
1Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States.
ACS Nano
|April 29, 2024
Summary
Nanoparticle branch length significantly impacts how ligands interact with cell receptors. Longer branches on gold nanostars improve cancer cell targeting and binding, enhancing drug delivery potential.
Area of Science:
- Biophysics
- Nanotechnology
- Cell Biology
Background:
- Nanoparticle design influences biological interactions.
- Understanding ligand-receptor dynamics is crucial for targeted therapies.
Purpose of the Study:
- To investigate the effect of nanoparticle branch length on ligand-receptor interactions.
- To determine how branch length affects nanoconstruct binding efficacy and cellular behavior.
Main Methods:
- Live-cell, single-particle tracking of DNA aptamer-gold nanostar nanoconstructs.
- Bivariate analysis of rotational and translational dynamics.
- Transmission electron microscopy to analyze protein corona distribution.
Main Results:
- Longer branches enhanced binding efficacy to human epidermal growth factor receptor 2 (HER2).
- Longer branches increased targeting interactions and prolonged nanoconstruct-cell interaction time.
- Distinct protein corona distributions on nanoconstructs correlated with branch length and binding efficiency.
Conclusions:
- Nanoparticle branch length is a critical factor in modulating the local chemical environment.
- Optimizing branch length can enhance specific ligand-receptor interactions for targeted applications.
- Single-particle dynamics provide insights into nanoparticle behavior at the cellular interface.
