Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G
- Autores
- Gonano, Luis Alberto; Aitken Buck, Hamish M.; Chakraborty, Akash D.; Worthington, Luke P. I.; Cully, Tanya R.; Lamberts, Regis R.; Vila Petroff, Martin Gerarde; Jones, Peter P.
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background: The cGMP-dependent protein kinase G (PKG) phosphorylates the cardiac ryanodine receptor (RyR2) in vitro. We aimed to determine whether modulation of endogenous PKG alters RyR2-mediated spontaneous Ca2+ release and whether this effect is linked to a change in RyR2 phosphorylation. Methods: & Results: Human embryonic kidney (HEK293) cells with inducible RyR2 expression were treated with the cGMP analogue 8-Br-cGMP (100 μM) to activate endogenous PKG. In cells transfected with luminal Ca2+ sensor, D1ER, PKG activation significantly reduced the threshold for RyR2-mediated spontaneous Ca2+ release (93.9 ± 0.4% of store size with vehicle vs. 91.7 ± 0.8% with 8-Br-cGMP, P = 0.04). Mutation of the proposed PKG phosphorylation sites, S2808 and S2030, either individually or as a combination, prevented the decrease in Ca2+ release threshold induced by endogenous PKG activation. Interestingly, despite a functional dependence on expression of RyR2 phosphorylation sites, 8-Br-cGMP activation of PKG did not promote a detectable change in S2808 phosphorylation (P = 0.9). Paradoxically, pharmacological inhibition of PKG with KT 5823 (1 μM) also reduced the threshold for spontaneous Ca2+ release through RyR2 without affecting S2808 phosphorylation. Silencing RNA knockdown of endogenous PKG expression also had no quantifiable effect on RyR2 S2808 phosphorylation (P = 0.9). However, unlike PKG inhibition with KT 5823, PKG knockdown did not alter spontaneous Ca2+ release propensity or luminal Ca2+ handling. Conclusion: In an intact cell model, activation of endogenous PKG reduces the threshold for RyR2-mediated spontaneous Ca2+ release in a manner dependent on the RyR2 phosphorylation sites S2808 and S2030. This study clarifies the regulation of RyR2 Ca2+ release by endogenous PKG and functionally implicates the role of RyR2 phosphorylation.
Fil: Gonano, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; Argentina. University of Otago; Nueva Zelanda
Fil: Aitken Buck, Hamish M.. University of Otago; Nueva Zelanda
Fil: Chakraborty, Akash D.. University of Otago; Nueva Zelanda
Fil: Worthington, Luke P. I.. University of Otago; Nueva Zelanda
Fil: Cully, Tanya R.. University of Otago; Nueva Zelanda
Fil: Lamberts, Regis R.. University of Otago; Nueva Zelanda
Fil: Vila Petroff, Martin Gerarde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; Argentina
Fil: Jones, Peter P.. University of Otago; Nueva Zelanda - Materia
-
CALCIUM
CARDIAC RYANODINE RECEPTOR
KT 5823
PHOSPHORYLATION
PROTEIN KINASE G
STORE OVERLOAD-INDUCED CALCIUM RELEASE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/209958
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Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase GGonano, Luis AlbertoAitken Buck, Hamish M.Chakraborty, Akash D.Worthington, Luke P. I.Cully, Tanya R.Lamberts, Regis R.Vila Petroff, Martin GerardeJones, Peter P.CALCIUMCARDIAC RYANODINE RECEPTORKT 5823PHOSPHORYLATIONPROTEIN KINASE GSTORE OVERLOAD-INDUCED CALCIUM RELEASEhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Background: The cGMP-dependent protein kinase G (PKG) phosphorylates the cardiac ryanodine receptor (RyR2) in vitro. We aimed to determine whether modulation of endogenous PKG alters RyR2-mediated spontaneous Ca2+ release and whether this effect is linked to a change in RyR2 phosphorylation. Methods: & Results: Human embryonic kidney (HEK293) cells with inducible RyR2 expression were treated with the cGMP analogue 8-Br-cGMP (100 μM) to activate endogenous PKG. In cells transfected with luminal Ca2+ sensor, D1ER, PKG activation significantly reduced the threshold for RyR2-mediated spontaneous Ca2+ release (93.9 ± 0.4% of store size with vehicle vs. 91.7 ± 0.8% with 8-Br-cGMP, P = 0.04). Mutation of the proposed PKG phosphorylation sites, S2808 and S2030, either individually or as a combination, prevented the decrease in Ca2+ release threshold induced by endogenous PKG activation. Interestingly, despite a functional dependence on expression of RyR2 phosphorylation sites, 8-Br-cGMP activation of PKG did not promote a detectable change in S2808 phosphorylation (P = 0.9). Paradoxically, pharmacological inhibition of PKG with KT 5823 (1 μM) also reduced the threshold for spontaneous Ca2+ release through RyR2 without affecting S2808 phosphorylation. Silencing RNA knockdown of endogenous PKG expression also had no quantifiable effect on RyR2 S2808 phosphorylation (P = 0.9). However, unlike PKG inhibition with KT 5823, PKG knockdown did not alter spontaneous Ca2+ release propensity or luminal Ca2+ handling. Conclusion: In an intact cell model, activation of endogenous PKG reduces the threshold for RyR2-mediated spontaneous Ca2+ release in a manner dependent on the RyR2 phosphorylation sites S2808 and S2030. This study clarifies the regulation of RyR2 Ca2+ release by endogenous PKG and functionally implicates the role of RyR2 phosphorylation.Fil: Gonano, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; Argentina. University of Otago; Nueva ZelandaFil: Aitken Buck, Hamish M.. University of Otago; Nueva ZelandaFil: Chakraborty, Akash D.. University of Otago; Nueva ZelandaFil: Worthington, Luke P. I.. University of Otago; Nueva ZelandaFil: Cully, Tanya R.. University of Otago; Nueva ZelandaFil: Lamberts, Regis R.. University of Otago; Nueva ZelandaFil: Vila Petroff, Martin Gerarde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; ArgentinaFil: Jones, Peter P.. University of Otago; Nueva ZelandaElsevier2022-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/209958Gonano, Luis Alberto; Aitken Buck, Hamish M.; Chakraborty, Akash D.; Worthington, Luke P. I.; Cully, Tanya R.; et al.; Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G; Elsevier; Current Research in Physiology; 5; 1-2022; 171-1782665-9441CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2665944122000165info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crphys.2022.03.004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:32Zoai:ri.conicet.gov.ar:11336/209958instacron: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:34982025-09-29 09:37:32.402CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
title |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
spellingShingle |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G Gonano, Luis Alberto CALCIUM CARDIAC RYANODINE RECEPTOR KT 5823 PHOSPHORYLATION PROTEIN KINASE G STORE OVERLOAD-INDUCED CALCIUM RELEASE |
title_short |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
title_full |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
title_fullStr |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
title_full_unstemmed |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
title_sort |
Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G |
dc.creator.none.fl_str_mv |
Gonano, Luis Alberto Aitken Buck, Hamish M. Chakraborty, Akash D. Worthington, Luke P. I. Cully, Tanya R. Lamberts, Regis R. Vila Petroff, Martin Gerarde Jones, Peter P. |
author |
Gonano, Luis Alberto |
author_facet |
Gonano, Luis Alberto Aitken Buck, Hamish M. Chakraborty, Akash D. Worthington, Luke P. I. Cully, Tanya R. Lamberts, Regis R. Vila Petroff, Martin Gerarde Jones, Peter P. |
author_role |
author |
author2 |
Aitken Buck, Hamish M. Chakraborty, Akash D. Worthington, Luke P. I. Cully, Tanya R. Lamberts, Regis R. Vila Petroff, Martin Gerarde Jones, Peter P. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
CALCIUM CARDIAC RYANODINE RECEPTOR KT 5823 PHOSPHORYLATION PROTEIN KINASE G STORE OVERLOAD-INDUCED CALCIUM RELEASE |
topic |
CALCIUM CARDIAC RYANODINE RECEPTOR KT 5823 PHOSPHORYLATION PROTEIN KINASE G STORE OVERLOAD-INDUCED CALCIUM RELEASE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Background: The cGMP-dependent protein kinase G (PKG) phosphorylates the cardiac ryanodine receptor (RyR2) in vitro. We aimed to determine whether modulation of endogenous PKG alters RyR2-mediated spontaneous Ca2+ release and whether this effect is linked to a change in RyR2 phosphorylation. Methods: & Results: Human embryonic kidney (HEK293) cells with inducible RyR2 expression were treated with the cGMP analogue 8-Br-cGMP (100 μM) to activate endogenous PKG. In cells transfected with luminal Ca2+ sensor, D1ER, PKG activation significantly reduced the threshold for RyR2-mediated spontaneous Ca2+ release (93.9 ± 0.4% of store size with vehicle vs. 91.7 ± 0.8% with 8-Br-cGMP, P = 0.04). Mutation of the proposed PKG phosphorylation sites, S2808 and S2030, either individually or as a combination, prevented the decrease in Ca2+ release threshold induced by endogenous PKG activation. Interestingly, despite a functional dependence on expression of RyR2 phosphorylation sites, 8-Br-cGMP activation of PKG did not promote a detectable change in S2808 phosphorylation (P = 0.9). Paradoxically, pharmacological inhibition of PKG with KT 5823 (1 μM) also reduced the threshold for spontaneous Ca2+ release through RyR2 without affecting S2808 phosphorylation. Silencing RNA knockdown of endogenous PKG expression also had no quantifiable effect on RyR2 S2808 phosphorylation (P = 0.9). However, unlike PKG inhibition with KT 5823, PKG knockdown did not alter spontaneous Ca2+ release propensity or luminal Ca2+ handling. Conclusion: In an intact cell model, activation of endogenous PKG reduces the threshold for RyR2-mediated spontaneous Ca2+ release in a manner dependent on the RyR2 phosphorylation sites S2808 and S2030. This study clarifies the regulation of RyR2 Ca2+ release by endogenous PKG and functionally implicates the role of RyR2 phosphorylation. Fil: Gonano, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; Argentina. University of Otago; Nueva Zelanda Fil: Aitken Buck, Hamish M.. University of Otago; Nueva Zelanda Fil: Chakraborty, Akash D.. University of Otago; Nueva Zelanda Fil: Worthington, Luke P. I.. University of Otago; Nueva Zelanda Fil: Cully, Tanya R.. University of Otago; Nueva Zelanda Fil: Lamberts, Regis R.. University of Otago; Nueva Zelanda Fil: Vila Petroff, Martin Gerarde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani". Universidad Nacional de La Plata. Facultad de Ciencias Médicas. Centro de Investigaciones Cardiovasculares "Dr. Horacio Eugenio Cingolani"; Argentina Fil: Jones, Peter P.. University of Otago; Nueva Zelanda |
description |
Background: The cGMP-dependent protein kinase G (PKG) phosphorylates the cardiac ryanodine receptor (RyR2) in vitro. We aimed to determine whether modulation of endogenous PKG alters RyR2-mediated spontaneous Ca2+ release and whether this effect is linked to a change in RyR2 phosphorylation. Methods: & Results: Human embryonic kidney (HEK293) cells with inducible RyR2 expression were treated with the cGMP analogue 8-Br-cGMP (100 μM) to activate endogenous PKG. In cells transfected with luminal Ca2+ sensor, D1ER, PKG activation significantly reduced the threshold for RyR2-mediated spontaneous Ca2+ release (93.9 ± 0.4% of store size with vehicle vs. 91.7 ± 0.8% with 8-Br-cGMP, P = 0.04). Mutation of the proposed PKG phosphorylation sites, S2808 and S2030, either individually or as a combination, prevented the decrease in Ca2+ release threshold induced by endogenous PKG activation. Interestingly, despite a functional dependence on expression of RyR2 phosphorylation sites, 8-Br-cGMP activation of PKG did not promote a detectable change in S2808 phosphorylation (P = 0.9). Paradoxically, pharmacological inhibition of PKG with KT 5823 (1 μM) also reduced the threshold for spontaneous Ca2+ release through RyR2 without affecting S2808 phosphorylation. Silencing RNA knockdown of endogenous PKG expression also had no quantifiable effect on RyR2 S2808 phosphorylation (P = 0.9). However, unlike PKG inhibition with KT 5823, PKG knockdown did not alter spontaneous Ca2+ release propensity or luminal Ca2+ handling. Conclusion: In an intact cell model, activation of endogenous PKG reduces the threshold for RyR2-mediated spontaneous Ca2+ release in a manner dependent on the RyR2 phosphorylation sites S2808 and S2030. This study clarifies the regulation of RyR2 Ca2+ release by endogenous PKG and functionally implicates the role of RyR2 phosphorylation. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01 |
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/11336/209958 Gonano, Luis Alberto; Aitken Buck, Hamish M.; Chakraborty, Akash D.; Worthington, Luke P. I.; Cully, Tanya R.; et al.; Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G; Elsevier; Current Research in Physiology; 5; 1-2022; 171-178 2665-9441 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/209958 |
identifier_str_mv |
Gonano, Luis Alberto; Aitken Buck, Hamish M.; Chakraborty, Akash D.; Worthington, Luke P. I.; Cully, Tanya R.; et al.; Regulation of cardiac ryanodine receptor function by the cyclic-GMP dependent protein kinase G; Elsevier; Current Research in Physiology; 5; 1-2022; 171-178 2665-9441 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2665944122000165 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crphys.2022.03.004 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1844613182674436096 |
score |
13.070432 |