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Updated: Aug 10, 2026
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Studying the Stoichiometry of Epidermal Growth Factor Receptor in Intact Cells using Correlative Microscopy
Published on: September 11, 2015
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Surface-Patterned DNA Origami Rulers Reveal Nanoscale Distance Dependency of the Epidermal Growth Factor Receptor
Ivy Mayer1, Tina Karimian2, Klavdiya Gordiyenko1
1Institute for Biological Interfaces (IBG-1), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany.
Nano Letters
|January 24, 2024
Summary
Researchers used DNA origami to create molecular rulers, finding that a 30-40 nm spacing of epidermal growth factor (EGF) ligands optimally activates the EGF receptor (EGFR), advancing cell signaling studies.
Area of Science:
- Cell Biology
- Nanotechnology
- Biophysics
Background:
- Ligand nanoscale arrangement critically impacts membrane receptor activation and cellular communication.
- Understanding receptor activation requires precise control over ligand presentation.
Purpose of the Study:
- To develop and utilize DNA origami-based molecular rulers for investigating ligand spacing effects on receptor activation.
- To systematically study the impact of epidermal growth factor (EGF) ligand spacing on EGF receptor (EGFR) activation.
Main Methods:
- Fabrication of "Multiscale Origami Structures As Interface for Cells" (MOSAIC) using DNA origami.
- Systematic investigation of EGF ligand spacing on EGFR activation in adherent MCF7 and Hela cells.
Main Results:
- Optimal EGFR activation was observed when EGF ligands were spaced at approximately 30-40 nm.
- MOSAIC platform enabled precise control and analysis of nanoscale ligand arrangements.
Conclusions:
- The nanoscale spacing of ligands is a critical determinant of cellular signaling outcomes.
- DNA-based platforms like MOSAIC are powerful tools for dissecting molecular mechanisms in cellular signaling cascades.
