Related Experiment Video
Updated: Jun 3, 2026
08:46
Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis
Published on: September 16, 2014
Cantilever array sensors detect specific carbohydrate-protein interactions with picomolar sensitivity
Kathrin Gruber1, Tim Horlacher, Riccardo Castelli
1Department of Physics, Ludwig-Maximilians-Universität Munich, Walther-Meissner-Strasse 8, 85748 Garching, Germany.
ACS Nano
|March 11, 2011
Summary
We developed a novel biosensor to detect carbohydrate-protein interactions. This technology offers a sensitive, label-free method for analyzing these complex biological interactions.
Area of Science:
- Biochemistry
- Glycobiology
- Biosensor Technology
Background:
- The glycome's complexity, stemming from diverse carbohydrate structures, presents challenges in understanding biological functions.
- Identifying and quantifying carbohydrate interactions with biomolecules, especially proteins, is crucial for advancing glycomics.
- Existing methods for analyzing carbohydrate-protein interactions often lack sensitivity or require labels.
Purpose of the Study:
- To develop a novel cantilever array biosensor for sensitive and selective detection of carbohydrate-protein binding.
- To characterize the binding interactions between mannosides and cyanovirin-N using the developed biosensor.
- To establish a robust, label-free, and scalable platform for analyzing carbohydrate-protein interactions.
Main Methods:
- Fabrication of a cantilever array biosensor with a self-assembling carbohydrate-based sensing layer.
- Immobilization of oligomannosides onto the cantilever surface.
- Detection of cyanovirin-N binding via cantilever deflection, measuring mechanical surface stress.
- Quantitative analysis of binding strength and molecular preferences through comparative binding experiments.
Main Results:
- The biosensor successfully detected carbohydrate-protein binding interactions with high sensitivity.
- Cantilever deflection directly correlated with the strength and duration of cyanovirin-N binding to immobilized oligomannosides.
- The system demonstrated the ability to detect picomolar concentrations of carbohydrate-binding proteins.
- Label-free detection and quantitative analysis of binding preferences were achieved.
Conclusions:
- Carbohydrate-based cantilever biosensors provide a robust and scalable platform for analyzing carbohydrate-protein interactions.
- This technology enables sensitive, label-free detection of picomolar concentrations of carbohydrate-binding proteins.
- The developed biosensor advances the study of glycan recognition and its role in biological processes, including viral interactions.
