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| DOI | 10.1091/MBC.E08-08-0805 | ||||
| Año | 2009 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Low-density lipoprotein receptor-related protein 1 (LRP1) is an endocytic recycling receptor with two cytoplasmic tyrosine-based basolateral sorting signals. Here we show that during biosynthetic trafficking LRP1 uses AP1B adaptor complex to move from a post-TGN recycling endosome (RE) to the basolateral membrane. Then it recycles basolaterally from the basolateral sorting endosome (BSE) involving recognition by sorting nexin 17 (SNX17). In the biosynthetic pathway, Y-29 but not N-26 from a proximal NPXY directs LRP1 basolateral sorting from the TGN. A N(26)A mutant revealed that this NPXY motif recognized by SNX17 is required for the receptor's exit from BSE. An endocytic Y(63)ATL(66) motif also functions in basolateral recycling, in concert with an additional endocytic motif (LL86,87), by preventing LRP1 entry into the transcytotic apical pathway. All this sorting information operates similarly in hippocampal neurons to mediate LRP1 somatodendritic distribution regardless of the absence of AP1B in neurons. LRP1 basolateral distribution results then from spatially and temporally segregation steps mediated by recognition of distinct tyrosine-based motifs. We also demonstrate a novel function of SNX17 in basolateral/somatodendritic recycling from a different compartment than AP1B endosomes.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | DONOSO-RIVERA, MARIBEL VANESSA | Mujer |
Pontificia Universidad Católica de Chile - Chile
Instituto Milenio de Biología Fundamental y Aplicada, MIFAB - Chile Universidad Nacional Andrés Bello - Chile |
| 2 | CANCINO-NUNEZ, JOSE IGNACIO | Hombre |
Pontificia Universidad Católica de Chile - Chile
Instituto Milenio de Biología Fundamental y Aplicada, MIFAB - Chile Universidad Nacional Andrés Bello - Chile |
| 3 | Lee, Jiyeon | Mujer |
WASHINGTON UNIV - Estados Unidos
Washington University School of Medicine in St. Louis - Estados Unidos |
| 4 | van Kerkhof, Peter | Hombre |
Univ Med Ctr - Países Bajos
University Medical Center Utrecht - Países Bajos |
| 5 | Retamal, Claudio | Hombre |
Pontificia Universidad Católica de Chile - Chile
Instituto Milenio de Biología Fundamental y Aplicada, MIFAB - Chile Universidad Nacional Andrés Bello - Chile |
| 6 | Bu, Guojun | - |
WASHINGTON UNIV - Estados Unidos
Washington University School of Medicine in St. Louis - Estados Unidos |
| 7 | GONZALEZ-RUIZ, AIXA | Hombre |
Pontificia Universidad Católica de Chile - Chile
Instituto Milenio de Biología Fundamental y Aplicada, MIFAB - Chile Universidad Nacional Andrés Bello - Chile Facultad de Medicina - Chile |
| 8 | CACERES, ALFREDO OSCAR | Hombre |
INIMEC CONICET - Argentina
Instituto de Investigación Médica Mercedes y Martín Ferreyra - Argentina |
| 9 | MARZOLO-CANALES, MARIA PAZ | Mujer |
Pontificia Universidad Católica de Chile - Chile
Instituto Milenio de Biología Fundamental y Aplicada, MIFAB - Chile Universidad Nacional Andrés Bello - Chile |
| Fuente |
|---|
| Fogarty International Center |
| National Institutes of Health |
| MIFAB |
| American Health Assistance Foundation |
| National Institute on Aging |
| FIRCA |
| Fondo de Investigacio ' n Avanzada en Areas Prioritarias (FONDAP) |
| Agencia Nacional de Promocion Cient fica y Tecnologica (ANPCyT; Argentina) |
| Fondo Nacional de Investigacion Cient fica y Tecnologica ( FONDECYT) |
| Comision Nasional de Investigacion Cientifico y Technologico ( CONICET) |
| Agradecimiento |
|---|
| We thank Dr. Alexander Benmerah (Institut Cochin, U567 INSERM/ UMR8104 CNRS, Paris, France) for giving us the plasmid encoding the dominant negative forms of eps15 with GFP and Dr. Ira Mellman (Genentech, South San Francisco, CA) for providing us the cDNA of 1B- HA-tagged. From the Facultad de Ciencias Biolo ' gicas, PUC, we thank Dr. Alejandra Alvarez for providing us some of the hippocampal neurons used in this work, and Dr. Alexis Kalergis and Leandro Carreno for providing access to the FACS equipment. We also thank Dr. Mar a Isabel Yuseff for the characterization of the human anti- EEA1 antibodies in our laboratory and Olivia Ying for reviewing this manuscript. This work was supported by FIRCA grant TW006456 to G. B. and M. P. M., National Institutes of Health Grant R01 AG027924 to G. B., an Alzheimer's Disease Research grant from the American Health Assistance Foundation (AHAF) to G. B., Grant 1020746 from the Fondo Nacional de Investigacion Cient fica y Tecnologica ( FONDECYT) to M. P. M., Fondo de Investigacio ' n Avanzada en Areas Prioritarias ( FONDAP) Grant 13980001 and MIFAB to M. P. M. and A. G. It was also supported by grants from Comision Nasional de Investigacion Cientifico y Technologico ( CONICET) and Agencia Nacional de Promocion Cient fica y Tecnologica (ANPCyT; Argentina) to A. C. G. B. is an Established Investigator of the American Heart Association. |