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| Indexado |
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| DOI | 10.1111/TRA.12812 | ||||
| Año | 2021 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Ligand-independent epidermal growth factor receptor (EGFR) endocytosis is inducible by a variety of stress conditions converging upon p38 kinase. A less known pathway involves phosphatidic acid (PA) signaling toward the activation of type 4 phosphodiesterases (PDE4) that decrease cAMP levels and protein kinase A (PKA) activity. This PA/PDE4/PKA pathway is triggered with propranolol used to inhibit PA hydrolysis and induces clathrin-dependent and clathrin-independent endocytosis, followed by reversible accumulation of EGFR in recycling endosomes. Here we give further evidence of this signaling pathway using biosensors of PA, cAMP, and PKA in live cells and then show that it activates p38 and ERK1/2 downstream the PKA inhibition. Clathrin-silencing and IN/SUR experiments involved the activity of p38 in the clathrin-dependent route, while ERK1/2 mediates clathrin-independent EGFR endocytosis. The PA/PDE4/PKA pathway selectively increases the EGFR endocytic rate without affecting LDLR and TfR constitute endocytosis. This selectiveness is probably because of EGFR phosphorylation, as detected in Th1046/1047 and Ser669 residues. The EGFR accumulates at perinuclear recycling endosomes colocalizing with TfR, fluorescent transferrin, and Rab11, while a small proportion distributes to Alix-endosomes. A non-selective recycling arrest includes LDLR and TfR in a reversible manner. The PA/PDE4/PKA pathway involving both p38 and ERK1/2 expands the possibilities of EGFR transmodulation and interference in cancer.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | METZ-BAER, CLAUDIA ANDREA | Mujer |
Universidad San Sebastián - Chile
|
| 2 | OYANADEL-MARTINEZ, CLAUDIA ANDREA | Mujer |
Universidad San Sebastián - Chile
|
| 3 | Jung, Juan E. | Hombre |
Pontificia Universidad Católica de Chile - Chile
European Molecular Biology Laboratory Heidelberg - Alemania European Mol Biol Lab - Alemania |
| 4 | Retamal, Claudio | Hombre |
Universidad San Sebastián - Chile
|
| 5 | CANCINO-NUNEZ, JOSE IGNACIO | Hombre |
Universidad San Sebastián - Chile
|
| 6 | Barra-Carrasco, Jonathan | Hombre |
Universidad San Sebastián - Chile
Albany Medical College - Estados Unidos Albany Med Coll - Estados Unidos |
| 7 | Venegas, Jaime | Hombre |
Universidad San Sebastián - Chile
|
| 8 | Du, Guangwei | - |
University of Texas Health Science Center at Houston - Estados Unidos
Univ Texas Hlth Sci Ctr Houston - Estados Unidos McGovern Medical School - Estados Unidos |
| 9 | SOZA-GAJARDO, ANDREA MORENA | Mujer |
Universidad San Sebastián - Chile
|
| 10 | GONZALEZ-RUIZ, AIXA | Hombre |
Universidad San Sebastián - Chile
Pontificia Universidad Católica de Chile - Chile Fundación Ciencia y Vida - Chile |
| Fuente |
|---|
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Comisión Nacional de Investigación Científica y Tecnológica |
| Fondo Nacional de Desarrollo Científico y Tecnológico, FONDECYT |
| Programa de Apoyo a Centros con Financiamiento Basal |
| Agencia Nacional de Investigaci?n y Desarrollo |
| Agencia Nacional de Investigacion y Desarrollo (ANID), Programa Becas Doctorado Nacional |
| Agradecimiento |
|---|
| This work received financial support from the Fondo Nacional de Desarrollo Cient?fico y Tecnol?gico, FONDECYT grants #1181907 (AG), and #11181015 (CO) and ?Programa de Apoyo a Centros con Financiamiento Basal,? AFB 170005 and AFB 170004, Comisi?n Nacional de Investigaci?n Cient?fica y Tecnol?gica (CONICYT). Agencia Nacional de Investigaci?n y Desarrollo (ANID), Programa Becas Doctorado Nacional 21110001 (JV). |
| This work received financial support from the Fondo Nacional de Desarrollo Cient?fico y Tecnol?gico, FONDECYT grants #1181907 (AG), and #11181015 (CO) and ?Programa de Apoyo a Centros con Financiamiento Basal,? AFB 170005 and AFB 170004, Comisi?n Nacional de Investigaci?n Cient?fica y Tecnol?gica (CONICYT). Agencia Nacional de Investigaci?n y Desarrollo (ANID), Programa Becas Doctorado Nacional 21110001 (JV). |