Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/109087 https://doi.org/10.1016/j.celrep.2015.06.041 |
Resumo: | Alterations in ER homeostasis have been implicated in the pathophysiology of obesity and type-2 diabetes (T2D). Acute ER stress induction in the hypothalamus produces glucose metabolism perturbations. However, the neurobiological basis linking hypothalamic ER stress with abnormal glucose metabolism remains unknown. Here, we report that genetic and induced models of hypothalamic ER stress are associated with alterations in systemic glucose homeostasis due to increased gluconeogenesis (GNG) independent of body weight changes. Defective alpha melanocyte-stimulating hormone (α-MSH) production underlies this metabolic phenotype, as pharmacological strategies aimed at rescuing hypothalamic α-MSH content reversed this phenotype at metabolic and molecular level. Collectively, our results posit defective α-MSH processing as a fundamental mediator of enhanced GNG in the context of hypothalamic ER stress and establish α-MSH deficiency in proopiomelanocortin (POMC) neurons as a potential contributor to the pathophysiology of T2D. |
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Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic GluconeogenesisAnimalsEndoplasmic ReticulumFemaleGluconeogenesisHumansHypothalamusLiverMaleMiceMice, Inbred C57BLalpha-MSHAlterations in ER homeostasis have been implicated in the pathophysiology of obesity and type-2 diabetes (T2D). Acute ER stress induction in the hypothalamus produces glucose metabolism perturbations. However, the neurobiological basis linking hypothalamic ER stress with abnormal glucose metabolism remains unknown. Here, we report that genetic and induced models of hypothalamic ER stress are associated with alterations in systemic glucose homeostasis due to increased gluconeogenesis (GNG) independent of body weight changes. Defective alpha melanocyte-stimulating hormone (α-MSH) production underlies this metabolic phenotype, as pharmacological strategies aimed at rescuing hypothalamic α-MSH content reversed this phenotype at metabolic and molecular level. Collectively, our results posit defective α-MSH processing as a fundamental mediator of enhanced GNG in the context of hypothalamic ER stress and establish α-MSH deficiency in proopiomelanocortin (POMC) neurons as a potential contributor to the pathophysiology of T2D.Elsevier2015-07-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/109087http://hdl.handle.net/10316/109087https://doi.org/10.1016/j.celrep.2015.06.041eng22111247Schneeberger, MarcGómez-Valadés, Alicia G.Altirriba, JordiSebastián, DavidRamírez, SaraGarcia, AinhoaEsteban, YaizaDrougard, AnneFerrés-Coy, AlbertBortolozzi, AnalíaGarcia-Roves, Pablo M.Jones, John G.Manadas, BrunoZorzano, AntonioGomis, RamonClaret, Marcinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-09-27T09:16:46Zoai:estudogeral.uc.pt:10316/109087Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:25:17.926358Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
title |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
spellingShingle |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis Schneeberger, Marc Animals Endoplasmic Reticulum Female Gluconeogenesis Humans Hypothalamus Liver Male Mice Mice, Inbred C57BL alpha-MSH |
title_short |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
title_full |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
title_fullStr |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
title_full_unstemmed |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
title_sort |
Reduced α-MSH Underlies Hypothalamic ER-Stress-Induced Hepatic Gluconeogenesis |
author |
Schneeberger, Marc |
author_facet |
Schneeberger, Marc Gómez-Valadés, Alicia G. Altirriba, Jordi Sebastián, David Ramírez, Sara Garcia, Ainhoa Esteban, Yaiza Drougard, Anne Ferrés-Coy, Albert Bortolozzi, Analía Garcia-Roves, Pablo M. Jones, John G. Manadas, Bruno Zorzano, Antonio Gomis, Ramon Claret, Marc |
author_role |
author |
author2 |
Gómez-Valadés, Alicia G. Altirriba, Jordi Sebastián, David Ramírez, Sara Garcia, Ainhoa Esteban, Yaiza Drougard, Anne Ferrés-Coy, Albert Bortolozzi, Analía Garcia-Roves, Pablo M. Jones, John G. Manadas, Bruno Zorzano, Antonio Gomis, Ramon Claret, Marc |
author2_role |
author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Schneeberger, Marc Gómez-Valadés, Alicia G. Altirriba, Jordi Sebastián, David Ramírez, Sara Garcia, Ainhoa Esteban, Yaiza Drougard, Anne Ferrés-Coy, Albert Bortolozzi, Analía Garcia-Roves, Pablo M. Jones, John G. Manadas, Bruno Zorzano, Antonio Gomis, Ramon Claret, Marc |
dc.subject.por.fl_str_mv |
Animals Endoplasmic Reticulum Female Gluconeogenesis Humans Hypothalamus Liver Male Mice Mice, Inbred C57BL alpha-MSH |
topic |
Animals Endoplasmic Reticulum Female Gluconeogenesis Humans Hypothalamus Liver Male Mice Mice, Inbred C57BL alpha-MSH |
description |
Alterations in ER homeostasis have been implicated in the pathophysiology of obesity and type-2 diabetes (T2D). Acute ER stress induction in the hypothalamus produces glucose metabolism perturbations. However, the neurobiological basis linking hypothalamic ER stress with abnormal glucose metabolism remains unknown. Here, we report that genetic and induced models of hypothalamic ER stress are associated with alterations in systemic glucose homeostasis due to increased gluconeogenesis (GNG) independent of body weight changes. Defective alpha melanocyte-stimulating hormone (α-MSH) production underlies this metabolic phenotype, as pharmacological strategies aimed at rescuing hypothalamic α-MSH content reversed this phenotype at metabolic and molecular level. Collectively, our results posit defective α-MSH processing as a fundamental mediator of enhanced GNG in the context of hypothalamic ER stress and establish α-MSH deficiency in proopiomelanocortin (POMC) neurons as a potential contributor to the pathophysiology of T2D. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-21 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/109087 http://hdl.handle.net/10316/109087 https://doi.org/10.1016/j.celrep.2015.06.041 |
url |
http://hdl.handle.net/10316/109087 https://doi.org/10.1016/j.celrep.2015.06.041 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
22111247 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134135777755136 |