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Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex
Synaptic zinc signaling modulates synaptic activity and is present in specific populations of cortical neurons, suggesting that synaptic zinc contributes to the diversity of intracortical synaptic microcircuits and their functional specificity. To understand the role of zinc signaling in the cortex,...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10514716/ https://www.ncbi.nlm.nih.gov/pubmed/37585291 http://dx.doi.org/10.1016/j.celrep.2023.112932 |
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author | Bender, Philip T.R. McCollum, Mason Boyd-Pratt, Helen Mendelson, Benjamin Z. Anderson, Charles T. |
author_facet | Bender, Philip T.R. McCollum, Mason Boyd-Pratt, Helen Mendelson, Benjamin Z. Anderson, Charles T. |
author_sort | Bender, Philip T.R. |
collection | PubMed |
description | Synaptic zinc signaling modulates synaptic activity and is present in specific populations of cortical neurons, suggesting that synaptic zinc contributes to the diversity of intracortical synaptic microcircuits and their functional specificity. To understand the role of zinc signaling in the cortex, we performed whole-cell patch-clamp recordings from intratelencephalic (IT)-type neurons and pyramidal tract (PT)-type neurons in layer 5 of the mouse auditory cortex during optogenetic stimulation of specific classes of presynaptic neurons. Our results show that synaptic zinc potentiates AMPA receptor (AMPAR) function in a synapse-specific manner. We performed in vivo 2-photon calcium imaging of the same classes of neurons in awake mice and found that changes in synaptic zinc can widen or sharpen the sound-frequency tuning bandwidth of IT-type neurons but only widen the tuning bandwidth of PT-type neurons. These results provide evidence for synapse- and cell-type-specific actions of synaptic zinc in the cortex. |
format | Online Article Text |
id | pubmed-10514716 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
record_format | MEDLINE/PubMed |
spelling | pubmed-105147162023-09-22 Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex Bender, Philip T.R. McCollum, Mason Boyd-Pratt, Helen Mendelson, Benjamin Z. Anderson, Charles T. Cell Rep Article Synaptic zinc signaling modulates synaptic activity and is present in specific populations of cortical neurons, suggesting that synaptic zinc contributes to the diversity of intracortical synaptic microcircuits and their functional specificity. To understand the role of zinc signaling in the cortex, we performed whole-cell patch-clamp recordings from intratelencephalic (IT)-type neurons and pyramidal tract (PT)-type neurons in layer 5 of the mouse auditory cortex during optogenetic stimulation of specific classes of presynaptic neurons. Our results show that synaptic zinc potentiates AMPA receptor (AMPAR) function in a synapse-specific manner. We performed in vivo 2-photon calcium imaging of the same classes of neurons in awake mice and found that changes in synaptic zinc can widen or sharpen the sound-frequency tuning bandwidth of IT-type neurons but only widen the tuning bandwidth of PT-type neurons. These results provide evidence for synapse- and cell-type-specific actions of synaptic zinc in the cortex. 2023-08-29 2023-08-15 /pmc/articles/PMC10514716/ /pubmed/37585291 http://dx.doi.org/10.1016/j.celrep.2023.112932 Text en https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Article Bender, Philip T.R. McCollum, Mason Boyd-Pratt, Helen Mendelson, Benjamin Z. Anderson, Charles T. Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title | Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title_full | Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title_fullStr | Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title_full_unstemmed | Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title_short | Synaptic zinc potentiates AMPA receptor function in mouse auditory cortex |
title_sort | synaptic zinc potentiates ampa receptor function in mouse auditory cortex |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10514716/ https://www.ncbi.nlm.nih.gov/pubmed/37585291 http://dx.doi.org/10.1016/j.celrep.2023.112932 |
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