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Sekine K, Haga W, Kim S, Imayasu M, Yoshida T, Tsutsui H. Neuron-microelectrode junction induced by an engineered synapse organizer. Biochem Biophys Res Commun 2024; 712-713:149935. [PMID: 38626529 DOI: 10.1016/j.bbrc.2024.149935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 04/18/2024]
Abstract
The conventional microelectrodes for recording neuronal activities do not have innate selectivity to cell type, which is one of the critical limitations for the detailed analysis of neuronal circuits. In this study, we engineered a downsized variant of the artificial synapse organizer based on neurexin1β and a peptide-tag, fabricated gold microelectrodes functionalized with the receptor for the organizer, and performed validation experiments in primary cultured neurons. Successful inductions of synapse-like junctions were detected at the sites of contact between neurons expressing the engineered synapse organizer and functionalized microelectrodes, but not in the negative control experiment in which the electrode functionalization was omitted. Such a molecularly inducible neuron-microelectrode junction could be the basis for the next-generation electrophysiological technique enabling cell type-selective recording.
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Affiliation(s)
- Kosuke Sekine
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Wataru Haga
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Samyoung Kim
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Mieko Imayasu
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Tomoyuki Yoshida
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan; Research Center for Idling Brain Science, University of Toyama, Toyama, 930-0194, Japan
| | - Hidekazu Tsutsui
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan; Division of Transdisciplinary Sciences, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan.
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Haga W, Sekine K, Hamid SA, Imayasu M, Yoshida T, Tsutsui H. Development of artificial synapse organizers liganded with a peptide tag for molecularly inducible neuron-microelectrode interface. Biochem Biophys Res Commun 2024; 699:149563. [PMID: 38277728 DOI: 10.1016/j.bbrc.2024.149563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 01/20/2024] [Indexed: 01/28/2024]
Abstract
It has been proposed that cell-type-specific bioelectronic interfaces for neuronal circuits could be established by utilizing the function of synapse organizers. For this purpose, using neurexin-1β and a peptide tag, we engineered compact synapse organizers that do not interact with the naturally occurring receptors but induce presynaptic differentiation upon contact with nanobody-decorated objects in cultured mammalian and chick forebrain neurons. In chick neurons, the engineered organizer exerted synaptogenesis typically in ∼4 h after the contact, even under an air atmosphere at room temperature, thereby providing a useful cellular model for establishing the molecularly inducible neuron-microelectrode interface.
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Affiliation(s)
- Wataru Haga
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Kosuke Sekine
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Sm Ahasanul Hamid
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Mieko Imayasu
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan
| | - Tomoyuki Yoshida
- Department of Molecular Neuroscience, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan; Research Center for Idling Brain Science, University of Toyama, Toyama, 930-0194, Japan
| | - Hidekazu Tsutsui
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan; Division of Transdisciplinary Sciences, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, 923-1292, Japan.
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