Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus
- Autores
- Krzisch, Marine; Temprana, Silvio Gabriel; Mongiat, Lucas Alberto; Armida, Jan; Schmutz, Valentin; Virtanen, Mari A.; Kocher Braissant, Jacqueline; Kraftsik, Rudolf; Vutskits, Laszlo; Conzelmann, Karl Klaus; Bergami, Matteo; Gage, Fred H.; Schinder, Alejandro Fabian; Toni, Nicolas
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The adult dentate gyrus produces new neurons that morphologically and functionally integrate into the hippocampal network. In the adult brain, most excitatory synapses are ensheathed by astrocytic perisynaptic processes that regulate synaptic structure and function. However, these processes are formed during embryonic or early postnatal development and it is unknown whether astrocytes can also ensheathe synapses of neurons born during adulthood and, if so, whether they play a role in their synaptic transmission. Here, we used a combination of serial-section immuno-electron microscopy, confocal microscopy, and electrophysiology to examine the formation of perisynaptic processes on adult-born neurons. We found that the afferent and efferent synapses of newborn neurons are ensheathed by astrocytic processes, irrespective of the age of the neurons or the size of their synapses. The quantification of gliogenesis and the distribution of astrocytic processes on synapses formed by adult-born neurons suggest that the majority of these processes are recruited from pre-existing astrocytes. Furthermore, the inhibition of astrocytic glutamate re-uptake significantly reduced postsynaptic currents and increased paired-pulse facilitation in adult-born neurons, suggesting that perisynaptic processes modulate synaptic transmission on these cells. Finally, some processes were found intercalated between newly formed dendritic spines and potential presynaptic partners, suggesting that they may also play a structural role in the connectivity of new spines. Together, these results indicate that pre-existing astrocytes remodel their processes to ensheathe synapses of adult-born neurons and participate to the functional and structural integration of these cells into the hippocampal network.
Fil: Krzisch, Marine. University of Lausanne. Department of Fundamental Neurosciences; Suiza
Fil: Temprana, Silvio Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina
Fil: Mongiat, Lucas Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina
Fil: Armida, Jan. University of Lausanne. Department of Fundamental Neurosciences; Suiza
Fil: Schmutz, Valentin. University of Lausanne. Department of Fundamental Neurosciences; Suiza
Fil: Virtanen, Mari A.. Universidad de Ginebra; Suiza
Fil: Kocher Braissant, Jacqueline. University of Lausanne. Department of Fundamental Neurosciences; Suiza
Fil: Kraftsik, Rudolf. University of Lausanne. Department of Fundamental Neurosciences; Suiza
Fil: Vutskits, Laszlo. Universidad de Ginebra; Suiza. University Hospital of Geneva. Department of Anesthesiology, Pharmacology and Intensive Care; Suiza
Fil: Conzelmann, Karl Klaus. Ludwig-Maximilians University Múnich. Max von Pettenkofer Institute and Gene Center; Alemania
Fil: Bergami, Matteo. University Hospital of Cologne; Alemania
Fil: Gage, Fred H.. Salk Institute for Biological Studies; Estados Unidos
Fil: Schinder, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina
Fil: Toni, Nicolas. University of Lausanne. Department of Fundamental Neurosciences; Suiza - Materia
-
Adult neurogenesis
Dentate gyrus
Synaptogenesis
Astrocytes
Perisynaptic processes - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/9313
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Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampusKrzisch, MarineTemprana, Silvio GabrielMongiat, Lucas AlbertoArmida, JanSchmutz, ValentinVirtanen, Mari A.Kocher Braissant, JacquelineKraftsik, RudolfVutskits, LaszloConzelmann, Karl KlausBergami, MatteoGage, Fred H.Schinder, Alejandro FabianToni, NicolasAdult neurogenesisDentate gyrusSynaptogenesisAstrocytesPerisynaptic processeshttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3The adult dentate gyrus produces new neurons that morphologically and functionally integrate into the hippocampal network. In the adult brain, most excitatory synapses are ensheathed by astrocytic perisynaptic processes that regulate synaptic structure and function. However, these processes are formed during embryonic or early postnatal development and it is unknown whether astrocytes can also ensheathe synapses of neurons born during adulthood and, if so, whether they play a role in their synaptic transmission. Here, we used a combination of serial-section immuno-electron microscopy, confocal microscopy, and electrophysiology to examine the formation of perisynaptic processes on adult-born neurons. We found that the afferent and efferent synapses of newborn neurons are ensheathed by astrocytic processes, irrespective of the age of the neurons or the size of their synapses. The quantification of gliogenesis and the distribution of astrocytic processes on synapses formed by adult-born neurons suggest that the majority of these processes are recruited from pre-existing astrocytes. Furthermore, the inhibition of astrocytic glutamate re-uptake significantly reduced postsynaptic currents and increased paired-pulse facilitation in adult-born neurons, suggesting that perisynaptic processes modulate synaptic transmission on these cells. Finally, some processes were found intercalated between newly formed dendritic spines and potential presynaptic partners, suggesting that they may also play a structural role in the connectivity of new spines. Together, these results indicate that pre-existing astrocytes remodel their processes to ensheathe synapses of adult-born neurons and participate to the functional and structural integration of these cells into the hippocampal network.Fil: Krzisch, Marine. University of Lausanne. Department of Fundamental Neurosciences; SuizaFil: Temprana, Silvio Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; ArgentinaFil: Mongiat, Lucas Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; ArgentinaFil: Armida, Jan. University of Lausanne. Department of Fundamental Neurosciences; SuizaFil: Schmutz, Valentin. University of Lausanne. Department of Fundamental Neurosciences; SuizaFil: Virtanen, Mari A.. Universidad de Ginebra; SuizaFil: Kocher Braissant, Jacqueline. University of Lausanne. Department of Fundamental Neurosciences; SuizaFil: Kraftsik, Rudolf. University of Lausanne. Department of Fundamental Neurosciences; SuizaFil: Vutskits, Laszlo. Universidad de Ginebra; Suiza. University Hospital of Geneva. Department of Anesthesiology, Pharmacology and Intensive Care; SuizaFil: Conzelmann, Karl Klaus. Ludwig-Maximilians University Múnich. Max von Pettenkofer Institute and Gene Center; AlemaniaFil: Bergami, Matteo. University Hospital of Cologne; AlemaniaFil: Gage, Fred H.. Salk Institute for Biological Studies; Estados UnidosFil: Schinder, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; ArgentinaFil: Toni, Nicolas. University of Lausanne. Department of Fundamental Neurosciences; SuizaSpringer Heidelberg2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/9313Krzisch, Marine; Temprana, Silvio Gabriel; Mongiat, Lucas Alberto; Armida, Jan; Schmutz, Valentin; et al.; Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus; Springer Heidelberg; Brain Structure & Function; 220; 4; 7-2015; 2027-20421863-2653enginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00429-014-0768-yinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00429-014-0768-yinfo:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4481333/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:22Zoai:ri.conicet.gov.ar:11336/9313instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:52:22.929CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
title |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
spellingShingle |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus Krzisch, Marine Adult neurogenesis Dentate gyrus Synaptogenesis Astrocytes Perisynaptic processes |
title_short |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
title_full |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
title_fullStr |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
title_full_unstemmed |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
title_sort |
Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus |
dc.creator.none.fl_str_mv |
Krzisch, Marine Temprana, Silvio Gabriel Mongiat, Lucas Alberto Armida, Jan Schmutz, Valentin Virtanen, Mari A. Kocher Braissant, Jacqueline Kraftsik, Rudolf Vutskits, Laszlo Conzelmann, Karl Klaus Bergami, Matteo Gage, Fred H. Schinder, Alejandro Fabian Toni, Nicolas |
author |
Krzisch, Marine |
author_facet |
Krzisch, Marine Temprana, Silvio Gabriel Mongiat, Lucas Alberto Armida, Jan Schmutz, Valentin Virtanen, Mari A. Kocher Braissant, Jacqueline Kraftsik, Rudolf Vutskits, Laszlo Conzelmann, Karl Klaus Bergami, Matteo Gage, Fred H. Schinder, Alejandro Fabian Toni, Nicolas |
author_role |
author |
author2 |
Temprana, Silvio Gabriel Mongiat, Lucas Alberto Armida, Jan Schmutz, Valentin Virtanen, Mari A. Kocher Braissant, Jacqueline Kraftsik, Rudolf Vutskits, Laszlo Conzelmann, Karl Klaus Bergami, Matteo Gage, Fred H. Schinder, Alejandro Fabian Toni, Nicolas |
author2_role |
author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Adult neurogenesis Dentate gyrus Synaptogenesis Astrocytes Perisynaptic processes |
topic |
Adult neurogenesis Dentate gyrus Synaptogenesis Astrocytes Perisynaptic processes |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
The adult dentate gyrus produces new neurons that morphologically and functionally integrate into the hippocampal network. In the adult brain, most excitatory synapses are ensheathed by astrocytic perisynaptic processes that regulate synaptic structure and function. However, these processes are formed during embryonic or early postnatal development and it is unknown whether astrocytes can also ensheathe synapses of neurons born during adulthood and, if so, whether they play a role in their synaptic transmission. Here, we used a combination of serial-section immuno-electron microscopy, confocal microscopy, and electrophysiology to examine the formation of perisynaptic processes on adult-born neurons. We found that the afferent and efferent synapses of newborn neurons are ensheathed by astrocytic processes, irrespective of the age of the neurons or the size of their synapses. The quantification of gliogenesis and the distribution of astrocytic processes on synapses formed by adult-born neurons suggest that the majority of these processes are recruited from pre-existing astrocytes. Furthermore, the inhibition of astrocytic glutamate re-uptake significantly reduced postsynaptic currents and increased paired-pulse facilitation in adult-born neurons, suggesting that perisynaptic processes modulate synaptic transmission on these cells. Finally, some processes were found intercalated between newly formed dendritic spines and potential presynaptic partners, suggesting that they may also play a structural role in the connectivity of new spines. Together, these results indicate that pre-existing astrocytes remodel their processes to ensheathe synapses of adult-born neurons and participate to the functional and structural integration of these cells into the hippocampal network. Fil: Krzisch, Marine. University of Lausanne. Department of Fundamental Neurosciences; Suiza Fil: Temprana, Silvio Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina Fil: Mongiat, Lucas Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina Fil: Armida, Jan. University of Lausanne. Department of Fundamental Neurosciences; Suiza Fil: Schmutz, Valentin. University of Lausanne. Department of Fundamental Neurosciences; Suiza Fil: Virtanen, Mari A.. Universidad de Ginebra; Suiza Fil: Kocher Braissant, Jacqueline. University of Lausanne. Department of Fundamental Neurosciences; Suiza Fil: Kraftsik, Rudolf. University of Lausanne. Department of Fundamental Neurosciences; Suiza Fil: Vutskits, Laszlo. Universidad de Ginebra; Suiza. University Hospital of Geneva. Department of Anesthesiology, Pharmacology and Intensive Care; Suiza Fil: Conzelmann, Karl Klaus. Ludwig-Maximilians University Múnich. Max von Pettenkofer Institute and Gene Center; Alemania Fil: Bergami, Matteo. University Hospital of Cologne; Alemania Fil: Gage, Fred H.. Salk Institute for Biological Studies; Estados Unidos Fil: Schinder, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina Fil: Toni, Nicolas. University of Lausanne. Department of Fundamental Neurosciences; Suiza |
description |
The adult dentate gyrus produces new neurons that morphologically and functionally integrate into the hippocampal network. In the adult brain, most excitatory synapses are ensheathed by astrocytic perisynaptic processes that regulate synaptic structure and function. However, these processes are formed during embryonic or early postnatal development and it is unknown whether astrocytes can also ensheathe synapses of neurons born during adulthood and, if so, whether they play a role in their synaptic transmission. Here, we used a combination of serial-section immuno-electron microscopy, confocal microscopy, and electrophysiology to examine the formation of perisynaptic processes on adult-born neurons. We found that the afferent and efferent synapses of newborn neurons are ensheathed by astrocytic processes, irrespective of the age of the neurons or the size of their synapses. The quantification of gliogenesis and the distribution of astrocytic processes on synapses formed by adult-born neurons suggest that the majority of these processes are recruited from pre-existing astrocytes. Furthermore, the inhibition of astrocytic glutamate re-uptake significantly reduced postsynaptic currents and increased paired-pulse facilitation in adult-born neurons, suggesting that perisynaptic processes modulate synaptic transmission on these cells. Finally, some processes were found intercalated between newly formed dendritic spines and potential presynaptic partners, suggesting that they may also play a structural role in the connectivity of new spines. Together, these results indicate that pre-existing astrocytes remodel their processes to ensheathe synapses of adult-born neurons and participate to the functional and structural integration of these cells into the hippocampal network. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/9313 Krzisch, Marine; Temprana, Silvio Gabriel; Mongiat, Lucas Alberto; Armida, Jan; Schmutz, Valentin; et al.; Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus; Springer Heidelberg; Brain Structure & Function; 220; 4; 7-2015; 2027-2042 1863-2653 |
url |
http://hdl.handle.net/11336/9313 |
identifier_str_mv |
Krzisch, Marine; Temprana, Silvio Gabriel; Mongiat, Lucas Alberto; Armida, Jan; Schmutz, Valentin; et al.; Pre-existing astrocytes form functional perisynaptic processes on neurons generated in the adult hippocampus; Springer Heidelberg; Brain Structure & Function; 220; 4; 7-2015; 2027-2042 1863-2653 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00429-014-0768-y info:eu-repo/semantics/altIdentifier/doi/10.1007/s00429-014-0768-y info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4481333/ |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Springer Heidelberg |
publisher.none.fl_str_mv |
Springer Heidelberg |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269155207675904 |
score |
13.13397 |