TY - JOUR
T1 - Parkinson disease-associated mutations in LRRK2 cause centrosomal defects via Rab8a phosphorylation
AU - Madero-Pérez, Jesús
AU - Fdez, Elena
AU - Fernández, Belén
AU - Lara Ordóñez, Antonio J.
AU - Blanca Ramírez, Marian
AU - Gómez-Suaga, Patricia
AU - Waschbüsch, Dieter
AU - Lobbestael, Evy
AU - Baekelandt, Veerle
AU - Nairn, Angus C.
AU - Ruiz-Martínez, Javier
AU - Aiastui, Ana
AU - López de Munain, Adolfo
AU - Lis, Pawel
AU - Comptdaer, Thomas
AU - Taymans, Jean-Marc
AU - Chartier-Harlin, Marie-Christine
AU - Beilina, Alexandria
AU - Gonnelli, Adriano
AU - Cookson, Mark R.
AU - Greggio, Elisa
AU - Hilfiker, Sabine
N1 - S.H. was supported by the Michael J. Fox Foundation, the BBVA Foundation, FEDER, and the Spanish Ministry of Economy and Competitiveness (SAF2014–58653-R). E.G. was funded by the Michael J. Fox Foundation. J-M.T. and M.-C. C.-H. were funded by the Michael J. Fox Foundation, and M.-C.C.-H. was supported by Inserm, CHU de Lille, Lille University and the Ministère de la Recherche et de la Santé (PHRC Convergence). We gratefully acknowledge funding from the European Union’s Horizon 2020 research and innovation programme (Marie Sklodowska-Curie Action Individual Fellowship to J.-M.T.). A.C.N. was supported by the Dept. of the Army (USAMRAA W23RYX-9049-N610) and NIH (DA10044). This research was supported in part by the Intramural Research Program of the NIH, National Institute on Aging (to M.R.C.).
PY - 2018/1/23
Y1 - 2018/1/23
N2 - Background: Mutations in LRRK2 are a common genetic cause of Parkinson's disease (PD). LRRK2 interacts with and phosphorylates a subset of Rab proteins including Rab8a, a protein which has been implicated in various centrosome-related events. However, the cellular consequences of such phosphorylation remain elusive.Methods: Human neuroblastoma SH-SY5Y cells stably expressing wildtype or pathogenic LRRK2 were used to test for polarity defects in the context of centrosomal positioning. Centrosomal cohesion deficits were analyzed from transiently transfected HEK293T cells, as well as from two distinct peripheral cell types derived from LRRK2-PD patients. Kinase assays, coimmunoprecipitation and GTP binding/retention assays were used to address Rab8a phosphorylation by LRRK2 and its effects in vitro. Transient transfections and siRNA experiments were performed to probe for the implication of Rab8a and its phosphorylated form in the centrosomal deficits caused by pathogenic LRRK2.Results: Here, we show that pathogenic LRRK2 causes deficits in centrosomal positioning with effects on neurite outgrowth, cell polarization and directed migration. Pathogenic LRRK2 also causes deficits in centrosome cohesion which can be detected in peripheral cells derived from LRRK2-PD patients as compared to healthy controls, and which are reversed upon LRRK2 kinase inhibition. The centrosomal cohesion and polarity deficits can be mimicked when co-expressing wildtype LRRK2 with wildtype but not phospho-deficient Rab8a. The centrosomal defects induced by pathogenic LRRK2 are associated with a kinase activity-dependent increase in the centrosomal localization of phosphorylated Rab8a, and are prominently reduced upon RNAi of Rab8a.Conclusions: Our findings reveal a new function of LRRK2 mediated by Rab8a phosphorylation and related to various centrosomal defects.
AB - Background: Mutations in LRRK2 are a common genetic cause of Parkinson's disease (PD). LRRK2 interacts with and phosphorylates a subset of Rab proteins including Rab8a, a protein which has been implicated in various centrosome-related events. However, the cellular consequences of such phosphorylation remain elusive.Methods: Human neuroblastoma SH-SY5Y cells stably expressing wildtype or pathogenic LRRK2 were used to test for polarity defects in the context of centrosomal positioning. Centrosomal cohesion deficits were analyzed from transiently transfected HEK293T cells, as well as from two distinct peripheral cell types derived from LRRK2-PD patients. Kinase assays, coimmunoprecipitation and GTP binding/retention assays were used to address Rab8a phosphorylation by LRRK2 and its effects in vitro. Transient transfections and siRNA experiments were performed to probe for the implication of Rab8a and its phosphorylated form in the centrosomal deficits caused by pathogenic LRRK2.Results: Here, we show that pathogenic LRRK2 causes deficits in centrosomal positioning with effects on neurite outgrowth, cell polarization and directed migration. Pathogenic LRRK2 also causes deficits in centrosome cohesion which can be detected in peripheral cells derived from LRRK2-PD patients as compared to healthy controls, and which are reversed upon LRRK2 kinase inhibition. The centrosomal cohesion and polarity deficits can be mimicked when co-expressing wildtype LRRK2 with wildtype but not phospho-deficient Rab8a. The centrosomal defects induced by pathogenic LRRK2 are associated with a kinase activity-dependent increase in the centrosomal localization of phosphorylated Rab8a, and are prominently reduced upon RNAi of Rab8a.Conclusions: Our findings reveal a new function of LRRK2 mediated by Rab8a phosphorylation and related to various centrosomal defects.
KW - Centrosome
KW - LRRK2
KW - Parkinson's disease
KW - Phosphorylation
KW - Rab8a
U2 - 10.1186/s13024-018-0235-y
DO - 10.1186/s13024-018-0235-y
M3 - Article
C2 - 29357897
SN - 1750-1326
VL - 13
SP - 1
EP - 22
JO - Molecular Neurodegeneration
JF - Molecular Neurodegeneration
IS - 1
M1 - 3
ER -