Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice
- Autores
- Keller, Kirsten; Maass, Martina; Dizayee, Sara; Leiss, Veronika; Annala, Suvi; Köth, Jessica; Seemann, Wiebke K.; Müller Ehmsen, Jochen; Mohr, Klaus; Nürnberg, Bernd; Engelhardt, Stefan; Herzig, Stefan; Birnbaumer, Lutz; Matthes, Jan
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Aims Inhibitory G (Gi) proteins have been proposed to be cardioprotective. We investigated effects of Gαi2 knockout on cardiac function and survival in a murine heart failure model of cardiac β1-adrenoceptor overexpression. Methods and results β1-transgenic mice lacking Gαi2 (β1-tg/Gαi2 -/-) were compared with wild-type mice and littermates either overexpressing cardiac β1-adrenoceptors (β1-tg) or lacking Gαi2 (Gαi2 -/-). At 300 days, mortality of mice only lacking Gαi2 was already higher compared with wild-type or β1-tg, but similar to β1-tg/Gαi2 -/-, mice. Beyond 300 days, mortality of β1-tg/Gαi2 -/- mice was enhanced compared with all other genotypes (mean survival time: 363 ± 21 days). At 300 days of age, echocardiography revealed similar cardiac function of wild-type, β1-tg, and Gαi2 -/- mice, but significant impairment for β1-tg/Gαi2 -/- mice (e.g. ejection fraction 14 ± 2 vs. 40 ± 4% in wild-type mice). Significantly increased ventricle-to-body weight ratio (0.71 ± 0.06 vs. 0.48 ± 0.02% in wild-type mice), left ventricular size (length 0.82 ± 0.04 vs. 0.66 ± 0.03 cm in wild types), and atrial natriuretic peptide and brain natriuretic peptide expression (mRNA: 2819 and 495% of wild-type mice, respectively) indicated hypertrophy. Gαi3 was significantly up-regulated in Gαi2 knockout mice (protein compared with wild type: 340 ± 90% in Gαi2 -/- and 394 ± 80% in β1-tg/Gαi2 -/-, respectively). Conclusions Gαi2 deficiency combined with cardiac β1-adrenoceptor overexpression strongly impaired survival and cardiac function. At 300 days of age, β1-adrenoceptor overexpression alone had not induced cardiac hypertrophy or dysfunction while there was overt cardiomyopathy in mice additionally lacking Gαi2. We propose an enhanced effect of increased β1-adrenergic drive by the lack of protection via Gαi2. Gαi3 up-regulation was not sufficient to compensate for Gαi2 deficiency, suggesting an isoform-specific or a concentration-dependent mechanism.
Fil: Keller, Kirsten. Universitat Zu Köln; Alemania
Fil: Maass, Martina. University Hospital of Cologne; Alemania
Fil: Dizayee, Sara. Universitat Zu Köln; Alemania
Fil: Leiss, Veronika. Eberhard Karls University Hospitals and Clinics; Alemania
Fil: Annala, Suvi. Universitat Zu Köln; Alemania
Fil: Köth, Jessica. Universitat Zu Köln; Alemania
Fil: Seemann, Wiebke K.. Universitat Zu Köln; Alemania
Fil: Müller Ehmsen, Jochen. Asklepios Klinik Altona; Alemania
Fil: Mohr, Klaus. Universitaet Bonn; Alemania
Fil: Nürnberg, Bernd. Eberhard Karls University Hospitals and Clinics; Alemania
Fil: Engelhardt, Stefan. Universitat Technical Zu Munich; Alemania
Fil: Herzig, Stefan. Universitat Zu Köln; Alemania
Fil: Birnbaumer, Lutz. National Institutes of Health; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Matthes, Jan. Universitat Zu Köln; Alemania - Materia
-
Adrenergic Receptor
Cardiomyopathy
Cardioprotection
Heart Failure
Inhibitory G Protein - 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:11336/37874
Ver los metadatos del registro completo
id |
CONICETDig_382f1036d4379b286ef162b09ebdeaf5 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/37874 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing miceKeller, KirstenMaass, MartinaDizayee, SaraLeiss, VeronikaAnnala, SuviKöth, JessicaSeemann, Wiebke K.Müller Ehmsen, JochenMohr, KlausNürnberg, BerndEngelhardt, StefanHerzig, StefanBirnbaumer, LutzMatthes, JanAdrenergic ReceptorCardiomyopathyCardioprotectionHeart FailureInhibitory G Proteinhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Aims Inhibitory G (Gi) proteins have been proposed to be cardioprotective. We investigated effects of Gαi2 knockout on cardiac function and survival in a murine heart failure model of cardiac β1-adrenoceptor overexpression. Methods and results β1-transgenic mice lacking Gαi2 (β1-tg/Gαi2 -/-) were compared with wild-type mice and littermates either overexpressing cardiac β1-adrenoceptors (β1-tg) or lacking Gαi2 (Gαi2 -/-). At 300 days, mortality of mice only lacking Gαi2 was already higher compared with wild-type or β1-tg, but similar to β1-tg/Gαi2 -/-, mice. Beyond 300 days, mortality of β1-tg/Gαi2 -/- mice was enhanced compared with all other genotypes (mean survival time: 363 ± 21 days). At 300 days of age, echocardiography revealed similar cardiac function of wild-type, β1-tg, and Gαi2 -/- mice, but significant impairment for β1-tg/Gαi2 -/- mice (e.g. ejection fraction 14 ± 2 vs. 40 ± 4% in wild-type mice). Significantly increased ventricle-to-body weight ratio (0.71 ± 0.06 vs. 0.48 ± 0.02% in wild-type mice), left ventricular size (length 0.82 ± 0.04 vs. 0.66 ± 0.03 cm in wild types), and atrial natriuretic peptide and brain natriuretic peptide expression (mRNA: 2819 and 495% of wild-type mice, respectively) indicated hypertrophy. Gαi3 was significantly up-regulated in Gαi2 knockout mice (protein compared with wild type: 340 ± 90% in Gαi2 -/- and 394 ± 80% in β1-tg/Gαi2 -/-, respectively). Conclusions Gαi2 deficiency combined with cardiac β1-adrenoceptor overexpression strongly impaired survival and cardiac function. At 300 days of age, β1-adrenoceptor overexpression alone had not induced cardiac hypertrophy or dysfunction while there was overt cardiomyopathy in mice additionally lacking Gαi2. We propose an enhanced effect of increased β1-adrenergic drive by the lack of protection via Gαi2. Gαi3 up-regulation was not sufficient to compensate for Gαi2 deficiency, suggesting an isoform-specific or a concentration-dependent mechanism.Fil: Keller, Kirsten. Universitat Zu Köln; AlemaniaFil: Maass, Martina. University Hospital of Cologne; AlemaniaFil: Dizayee, Sara. Universitat Zu Köln; AlemaniaFil: Leiss, Veronika. Eberhard Karls University Hospitals and Clinics; AlemaniaFil: Annala, Suvi. Universitat Zu Köln; AlemaniaFil: Köth, Jessica. Universitat Zu Köln; AlemaniaFil: Seemann, Wiebke K.. Universitat Zu Köln; AlemaniaFil: Müller Ehmsen, Jochen. Asklepios Klinik Altona; AlemaniaFil: Mohr, Klaus. Universitaet Bonn; AlemaniaFil: Nürnberg, Bernd. Eberhard Karls University Hospitals and Clinics; AlemaniaFil: Engelhardt, Stefan. Universitat Technical Zu Munich; AlemaniaFil: Herzig, Stefan. Universitat Zu Köln; AlemaniaFil: Birnbaumer, Lutz. National Institutes of Health; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Matthes, Jan. Universitat Zu Köln; AlemaniaOxford University Press2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37874Keller, Kirsten; Maass, Martina; Dizayee, Sara; Leiss, Veronika; Annala, Suvi; et al.; Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice; Oxford University Press; Cardiovascular Research; 108; 3; 12-2015; 348-3560008-6363CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/cvr/cvv235info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/cardiovascres/article/108/3/348/557401info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:12Zoai:ri.conicet.gov.ar:11336/37874instacron: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 10:20:12.705CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
title |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
spellingShingle |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice Keller, Kirsten Adrenergic Receptor Cardiomyopathy Cardioprotection Heart Failure Inhibitory G Protein |
title_short |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
title_full |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
title_fullStr |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
title_full_unstemmed |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
title_sort |
Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice |
dc.creator.none.fl_str_mv |
Keller, Kirsten Maass, Martina Dizayee, Sara Leiss, Veronika Annala, Suvi Köth, Jessica Seemann, Wiebke K. Müller Ehmsen, Jochen Mohr, Klaus Nürnberg, Bernd Engelhardt, Stefan Herzig, Stefan Birnbaumer, Lutz Matthes, Jan |
author |
Keller, Kirsten |
author_facet |
Keller, Kirsten Maass, Martina Dizayee, Sara Leiss, Veronika Annala, Suvi Köth, Jessica Seemann, Wiebke K. Müller Ehmsen, Jochen Mohr, Klaus Nürnberg, Bernd Engelhardt, Stefan Herzig, Stefan Birnbaumer, Lutz Matthes, Jan |
author_role |
author |
author2 |
Maass, Martina Dizayee, Sara Leiss, Veronika Annala, Suvi Köth, Jessica Seemann, Wiebke K. Müller Ehmsen, Jochen Mohr, Klaus Nürnberg, Bernd Engelhardt, Stefan Herzig, Stefan Birnbaumer, Lutz Matthes, Jan |
author2_role |
author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Adrenergic Receptor Cardiomyopathy Cardioprotection Heart Failure Inhibitory G Protein |
topic |
Adrenergic Receptor Cardiomyopathy Cardioprotection Heart Failure Inhibitory G Protein |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Aims Inhibitory G (Gi) proteins have been proposed to be cardioprotective. We investigated effects of Gαi2 knockout on cardiac function and survival in a murine heart failure model of cardiac β1-adrenoceptor overexpression. Methods and results β1-transgenic mice lacking Gαi2 (β1-tg/Gαi2 -/-) were compared with wild-type mice and littermates either overexpressing cardiac β1-adrenoceptors (β1-tg) or lacking Gαi2 (Gαi2 -/-). At 300 days, mortality of mice only lacking Gαi2 was already higher compared with wild-type or β1-tg, but similar to β1-tg/Gαi2 -/-, mice. Beyond 300 days, mortality of β1-tg/Gαi2 -/- mice was enhanced compared with all other genotypes (mean survival time: 363 ± 21 days). At 300 days of age, echocardiography revealed similar cardiac function of wild-type, β1-tg, and Gαi2 -/- mice, but significant impairment for β1-tg/Gαi2 -/- mice (e.g. ejection fraction 14 ± 2 vs. 40 ± 4% in wild-type mice). Significantly increased ventricle-to-body weight ratio (0.71 ± 0.06 vs. 0.48 ± 0.02% in wild-type mice), left ventricular size (length 0.82 ± 0.04 vs. 0.66 ± 0.03 cm in wild types), and atrial natriuretic peptide and brain natriuretic peptide expression (mRNA: 2819 and 495% of wild-type mice, respectively) indicated hypertrophy. Gαi3 was significantly up-regulated in Gαi2 knockout mice (protein compared with wild type: 340 ± 90% in Gαi2 -/- and 394 ± 80% in β1-tg/Gαi2 -/-, respectively). Conclusions Gαi2 deficiency combined with cardiac β1-adrenoceptor overexpression strongly impaired survival and cardiac function. At 300 days of age, β1-adrenoceptor overexpression alone had not induced cardiac hypertrophy or dysfunction while there was overt cardiomyopathy in mice additionally lacking Gαi2. We propose an enhanced effect of increased β1-adrenergic drive by the lack of protection via Gαi2. Gαi3 up-regulation was not sufficient to compensate for Gαi2 deficiency, suggesting an isoform-specific or a concentration-dependent mechanism. Fil: Keller, Kirsten. Universitat Zu Köln; Alemania Fil: Maass, Martina. University Hospital of Cologne; Alemania Fil: Dizayee, Sara. Universitat Zu Köln; Alemania Fil: Leiss, Veronika. Eberhard Karls University Hospitals and Clinics; Alemania Fil: Annala, Suvi. Universitat Zu Köln; Alemania Fil: Köth, Jessica. Universitat Zu Köln; Alemania Fil: Seemann, Wiebke K.. Universitat Zu Köln; Alemania Fil: Müller Ehmsen, Jochen. Asklepios Klinik Altona; Alemania Fil: Mohr, Klaus. Universitaet Bonn; Alemania Fil: Nürnberg, Bernd. Eberhard Karls University Hospitals and Clinics; Alemania Fil: Engelhardt, Stefan. Universitat Technical Zu Munich; Alemania Fil: Herzig, Stefan. Universitat Zu Köln; Alemania Fil: Birnbaumer, Lutz. National Institutes of Health; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Matthes, Jan. Universitat Zu Köln; Alemania |
description |
Aims Inhibitory G (Gi) proteins have been proposed to be cardioprotective. We investigated effects of Gαi2 knockout on cardiac function and survival in a murine heart failure model of cardiac β1-adrenoceptor overexpression. Methods and results β1-transgenic mice lacking Gαi2 (β1-tg/Gαi2 -/-) were compared with wild-type mice and littermates either overexpressing cardiac β1-adrenoceptors (β1-tg) or lacking Gαi2 (Gαi2 -/-). At 300 days, mortality of mice only lacking Gαi2 was already higher compared with wild-type or β1-tg, but similar to β1-tg/Gαi2 -/-, mice. Beyond 300 days, mortality of β1-tg/Gαi2 -/- mice was enhanced compared with all other genotypes (mean survival time: 363 ± 21 days). At 300 days of age, echocardiography revealed similar cardiac function of wild-type, β1-tg, and Gαi2 -/- mice, but significant impairment for β1-tg/Gαi2 -/- mice (e.g. ejection fraction 14 ± 2 vs. 40 ± 4% in wild-type mice). Significantly increased ventricle-to-body weight ratio (0.71 ± 0.06 vs. 0.48 ± 0.02% in wild-type mice), left ventricular size (length 0.82 ± 0.04 vs. 0.66 ± 0.03 cm in wild types), and atrial natriuretic peptide and brain natriuretic peptide expression (mRNA: 2819 and 495% of wild-type mice, respectively) indicated hypertrophy. Gαi3 was significantly up-regulated in Gαi2 knockout mice (protein compared with wild type: 340 ± 90% in Gαi2 -/- and 394 ± 80% in β1-tg/Gαi2 -/-, respectively). Conclusions Gαi2 deficiency combined with cardiac β1-adrenoceptor overexpression strongly impaired survival and cardiac function. At 300 days of age, β1-adrenoceptor overexpression alone had not induced cardiac hypertrophy or dysfunction while there was overt cardiomyopathy in mice additionally lacking Gαi2. We propose an enhanced effect of increased β1-adrenergic drive by the lack of protection via Gαi2. Gαi3 up-regulation was not sufficient to compensate for Gαi2 deficiency, suggesting an isoform-specific or a concentration-dependent mechanism. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12 |
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/11336/37874 Keller, Kirsten; Maass, Martina; Dizayee, Sara; Leiss, Veronika; Annala, Suvi; et al.; Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice; Oxford University Press; Cardiovascular Research; 108; 3; 12-2015; 348-356 0008-6363 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/37874 |
identifier_str_mv |
Keller, Kirsten; Maass, Martina; Dizayee, Sara; Leiss, Veronika; Annala, Suvi; et al.; Lack of Gαi2 leads to dilative cardiomyopathy and increased mortality in β1-adrenoceptor overexpressing mice; Oxford University Press; Cardiovascular Research; 108; 3; 12-2015; 348-356 0008-6363 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/cvr/cvv235 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/cardiovascres/article/108/3/348/557401 |
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 |
dc.publisher.none.fl_str_mv |
Oxford University Press |
publisher.none.fl_str_mv |
Oxford University Press |
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 |
_version_ |
1844614180828610560 |
score |
13.070432 |