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Probing electrophysiological activity of amphiphilic Dynorphin A in planar neutral membranes reveals both ion channel-like activity and neuropeptide translocation
dc.contributor.author | Alvero González, Laidy Maidel | |
dc.contributor.author | Perini, Deborah Aurora | |
dc.contributor.author | Queralt-Martín, María | |
dc.contributor.author | Peralvarez-Marin, Alex | |
dc.contributor.author | Viñas, Clara | |
dc.contributor.author | Alcaraz, Antonio | |
dc.date.accessioned | 2023-12-15T07:55:39Z | |
dc.date.available | 2023-12-15T07:55:39Z | |
dc.date.issued | 2023-12 | |
dc.identifier.citation | L. M. Alvero-Gonzalez, D. A. Perini, M. Queralt-Martín, A. Perálvarez-Marín, C. Viñas, A. Alcaraz, Probing electrophysiological activity of amphiphilic Dynorphin A in planar neutral membranes reveals both ion channel-like activity and neuropeptide translocation. Bioelectrochemistry. 154 (2023) 108527, https://doi.org/10.1016/j.bioelechem.2023.108527. | ca_CA |
dc.identifier.issn | 1567-5394 | |
dc.identifier.uri | http://hdl.handle.net/10234/205192 | |
dc.description.abstract | Dynorphin A (DynA) is an endogenous neuropeptide that besides acting as a ligand of the κ-opioid receptor, presents some non-opioid pathophysiological properties associated to its ability to induce cell permeability similarly to cell-penetrating peptides (CPPs). Here, we use electrophysiology experiments to show that amphiphilic DynA generates aqueous pores in neutral membranes similar to those reported previously in charged membranes, but we also find other events thermodynamically incompatible with voltage-driven ion channel activity (i.e. non-zero currents with no applied voltage in symmetric salt conditions, reversal potentials that exceed the theoretical limit for a given salt concentration gradient). By comparison with current traces generated by other amphiphilic molecule known to spontaneously cross membranes, we hypothesize that DynA could directly translocate across neutral bilayers, a feature never observed in charged membranes following the same electrophysiological protocol. Our findings suggest that DynA interaction with the cellular membrane is modulated by the lipid charge distribution, enabling either passive ionic transport via membrane remodeling and pore formation or by peptide direct internalization independent of cellular transduction pathways. | ca_CA |
dc.description.sponsorShip | Funding for open access charge: CRUE-Universitat Jaume I | |
dc.format.extent | 7 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation | Estudio biofísico de los mecanismos de permeabilización de membranas inducidos por canales iónicos | ca_CA |
dc.relation | Determinantes moleculares en canales iónicos: desde formación de poros a identificación de fármacos basada en ligandos | ca_CA |
dc.relation.isPartOf | Bioelectrochemistry, 2023, vol. 154 | ca_CA |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | ca_CA |
dc.subject | bilayer lipid membrane | ca_CA |
dc.subject | peptide | ca_CA |
dc.subject | membrane transport | ca_CA |
dc.subject | electrophysiology | ca_CA |
dc.title | Probing electrophysiological activity of amphiphilic Dynorphin A in planar neutral membranes reveals both ion channel-like activity and neuropeptide translocation | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1016/j.bioelechem.2023.108527 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://www.sciencedirect.com/science/article/pii/S1567539423001640 | ca_CA |
dc.description.sponsorship | Authors acknowledge financial support by the Spanish Government MCIN/AEI/ 10.13039/501100011033 (Project 2019-108434GB-I00 to A.A., Project IJC2018-035283-I to M.Q.M. and Project PID2020-120222GB-I00 to A.P.-M.) and Universitat Jaume I (Project UJI-B2022-42 to A.A. and UJI-A2020-21 to M.Q.M). | |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
project.funder.identifier | http://dx.doi.org/10.13039/501100011033 | ca_CA |
project.funder.name | Ministerio de Ciencia, Innovación y Universidades | ca_CA |
project.funder.name | Universitat Jaume I | ca_CA |
oaire.awardNumber | MICIU/ICTI2017-2020/PID2019-108434GB-I00 | ca_CA |
oaire.awardNumber | MICIU/IJC2018-035283-I | ca_CA |
oaire.awardNumber | MICIU/ICTI2017-2020/PID2020-120222GB-I00 | ca_CA |
oaire.awardNumber | UJI-B2022-4 | ca_CA |
oaire.awardNumber | UJI-A2020-21 | ca_CA |
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