GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth.
Objective: While SCFA receptors GPR41 and GPR43 regulate β-cell insulin secretion, their role in α-cells remains unknown despite hyperglucagonemia in type 2 diabetes (T2D). Thus, the current study aims to investigate the ability of synthetic GPR41 and GPR43 agonists to modulate α-cell physiology and...
| Autores: | , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/125744 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/125744 |
| Access Level: | acceso abierto |
| Palabra clave: | 577.1 577.2 Islets Glucagon secretion Shorth-chain fatty acids gpr41 gpr43 Type 2 diabetes Ciencias Biomédicas 24 Ciencias de la Vida |
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GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth.Sánchez-Roncero, AliciaFernández Marcelo, TamaraPérez-Serna, AAMartínez-Oca, PaulaAlberquilla-Fernández, OmairaSánchez-Domínguez, RebecaSegovia, Jose CarlosEscrivá Pons, FernandoGonzález Gálvez, BeatrizÁlvarez Escolá, CarmenMarroqui, LauraFernández Millán, Elisa577.1577.2IsletsGlucagon secretionShorth-chain fatty acidsgpr41gpr43Type 2 diabetesCiencias Biomédicas24 Ciencias de la VidaObjective: While SCFA receptors GPR41 and GPR43 regulate β-cell insulin secretion, their role in α-cells remains unknown despite hyperglucagonemia in type 2 diabetes (T2D). Thus, the current study aims to investigate the ability of synthetic GPR41 and GPR43 agonists to modulate α-cell physiology and responsiveness to nutrient challenge. Methods: Using αTC1.9 cells and primary rat islets we investigated the role of SCFA receptors in glucagon expression and secretion under physiological and insulin resistant conditions associated with high-fat feeding (HFD) and lactation (L). The specific agonists AR420626 (AR) and (S)-2-(4-chlorophenyl)-3,3-dimethyl-N-(5-phenylthiazol-2-yl) butanamide (PA) were employed to study the mechanisms involved. Results: Histological and flow cytometry analysis of islets demonstrated that GPR41 and GPR43 localized in α-cells. Treatment of αTC1.9 cells with the GPR41-agonist AR or GPR43-agonist PA increased Gcg expression and glucagon secretion at low glucose, while AR also potentiated glucagon release at high glucose. This effect was recapitulated in isolated islets demonstrating pertussis toxin sensitivity for both agonist effects. HFD-fed animals showed glucose intolerance, early fasting hyperglucagonemia and islet resistance to glucose inhibition of glucagon secretion together with enhanced expression of islet Gpr41/43. Stimulation of HFD islets with the synthetic agonists further increased Gcg expression. Pancreatic Gpr41/43 levels were also transiently induced during lactation although only GPR41 activation of lactating rat islets up-regulated Gcg expression via Gαi and α-cell replication. Conclusions: These findings position GPR41 as a promising therapeutic target for modulating hyperglucagonemia and improving glycemic control in T2D, supporting its translational relevance in diabetes intervention strategies.ElsevierUniversidad Complutense de Madrid20252025-08-0120252025-08-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/125744reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1257442026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| title |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| spellingShingle |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. Sánchez-Roncero, Alicia 577.1 577.2 Islets Glucagon secretion Shorth-chain fatty acids gpr41 gpr43 Type 2 diabetes Ciencias Biomédicas 24 Ciencias de la Vida |
| title_short |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| title_full |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| title_fullStr |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| title_full_unstemmed |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| title_sort |
GPR41 and GPR43 modulate rodent pancreatic alpha-cell function and growth. |
| dc.creator.none.fl_str_mv |
Sánchez-Roncero, Alicia Fernández Marcelo, Tamara Pérez-Serna, AA Martínez-Oca, Paula Alberquilla-Fernández, Omaira Sánchez-Domínguez, Rebeca Segovia, Jose Carlos Escrivá Pons, Fernando González Gálvez, Beatriz Álvarez Escolá, Carmen Marroqui, Laura Fernández Millán, Elisa |
| author |
Sánchez-Roncero, Alicia |
| author_facet |
Sánchez-Roncero, Alicia Fernández Marcelo, Tamara Pérez-Serna, AA Martínez-Oca, Paula Alberquilla-Fernández, Omaira Sánchez-Domínguez, Rebeca Segovia, Jose Carlos Escrivá Pons, Fernando González Gálvez, Beatriz Álvarez Escolá, Carmen Marroqui, Laura Fernández Millán, Elisa |
| author_role |
author |
| author2 |
Fernández Marcelo, Tamara Pérez-Serna, AA Martínez-Oca, Paula Alberquilla-Fernández, Omaira Sánchez-Domínguez, Rebeca Segovia, Jose Carlos Escrivá Pons, Fernando González Gálvez, Beatriz Álvarez Escolá, Carmen Marroqui, Laura Fernández Millán, Elisa |
| author2_role |
author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
577.1 577.2 Islets Glucagon secretion Shorth-chain fatty acids gpr41 gpr43 Type 2 diabetes Ciencias Biomédicas 24 Ciencias de la Vida |
| topic |
577.1 577.2 Islets Glucagon secretion Shorth-chain fatty acids gpr41 gpr43 Type 2 diabetes Ciencias Biomédicas 24 Ciencias de la Vida |
| description |
Objective: While SCFA receptors GPR41 and GPR43 regulate β-cell insulin secretion, their role in α-cells remains unknown despite hyperglucagonemia in type 2 diabetes (T2D). Thus, the current study aims to investigate the ability of synthetic GPR41 and GPR43 agonists to modulate α-cell physiology and responsiveness to nutrient challenge. Methods: Using αTC1.9 cells and primary rat islets we investigated the role of SCFA receptors in glucagon expression and secretion under physiological and insulin resistant conditions associated with high-fat feeding (HFD) and lactation (L). The specific agonists AR420626 (AR) and (S)-2-(4-chlorophenyl)-3,3-dimethyl-N-(5-phenylthiazol-2-yl) butanamide (PA) were employed to study the mechanisms involved. Results: Histological and flow cytometry analysis of islets demonstrated that GPR41 and GPR43 localized in α-cells. Treatment of αTC1.9 cells with the GPR41-agonist AR or GPR43-agonist PA increased Gcg expression and glucagon secretion at low glucose, while AR also potentiated glucagon release at high glucose. This effect was recapitulated in isolated islets demonstrating pertussis toxin sensitivity for both agonist effects. HFD-fed animals showed glucose intolerance, early fasting hyperglucagonemia and islet resistance to glucose inhibition of glucagon secretion together with enhanced expression of islet Gpr41/43. Stimulation of HFD islets with the synthetic agonists further increased Gcg expression. Pancreatic Gpr41/43 levels were also transiently induced during lactation although only GPR41 activation of lactating rat islets up-regulated Gcg expression via Gαi and α-cell replication. Conclusions: These findings position GPR41 as a promising therapeutic target for modulating hyperglucagonemia and improving glycemic control in T2D, supporting its translational relevance in diabetes intervention strategies. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2025-08-01 2025 2025-08-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.14352/125744 |
| url |
https://hdl.handle.net/20.500.14352/125744 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
reponame:Docta Complutense instname:Universidad Complutense de Madrid (UCM) |
| instname_str |
Universidad Complutense de Madrid (UCM) |
| reponame_str |
Docta Complutense |
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Docta Complutense |
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| repository.mail.fl_str_mv |
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15,811543 |