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Neuroligin-1-Modified Electrodes for Specific Coupling with a Presynaptic Neuronal Membrane
Joohee Jeon1, Sun-Heui Yoon1, Min-Ah Oh1
1Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea.
ACS Applied Materials & Interfaces
|April 28, 2021
Summary
Researchers engineered neural electrodes by functionalizing them with neuroligin-1 protein. This created specific, stable connections to neurons, mimicking natural synapses for advanced neural interfaces.
Area of Science:
- Neuroscience
- Biotechnology
- Materials Science
Background:
- Achieving specific and stable neural interfaces is crucial for neural prosthetics and research.
- Current methods often lack the precision and longevity required for effective neural integration.
- Protein-protein interactions offer a promising avenue for targeted neuronal cell adhesion.
Purpose of the Study:
- To develop a novel neural interface by functionalizing electrode surfaces with genetically engineered neuroligin-1.
- To investigate the formation and stability of synapse-electrode connections mediated by neuroligin-1 and neurexin-1 β.
- To assess the functional characteristics and specificity of the engineered synapse-electrode interface.
Main Methods:
- Electrode surfaces were functionalized with genetically engineered neuroligin-1 protein.
- The binding of neuroligin-1 to neurexin-1 β on neuronal presynaptic membranes was utilized to form connections.
- The resulting synapse-electrode interface was analyzed for presynaptic protein assembly and exocytosis kinetics.
Main Results:
- Functionalization with neuroligin-1 successfully induced the formation of nascent presynaptic boutons.
- The synapse-electrode interface demonstrated specific binding and structural robustness.
- Exocytosis kinetics at the engineered interface were comparable to those of native synapses.
Conclusions:
- Genetically engineered neuroligin-1 on electrode surfaces can create specific and stable synaptic connections.
- This approach offers a robust method for interfacing neural circuits with electronic devices.
- Synaptic adhesion proteins represent a promising strategy for future neural interface development.
Keywords:
induced synapseneural interfaceneuroligin−neurexin interactionpresynaptic differentiationprimary cultured neuronsurface modificationMore Related Videos
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