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Centrosomal cohesion deficits as cellular biomarker in lymphoblastoid cell lines from LRRK2 Parkinson's disease patients

AuthorsFernández, B. ; Lara Ordóñez, A.J.; Fdez, E.; Mutez, E.; Comptdaer, T.; Leghay, C.; Kreisler, A.; Simonin, C.; Vandewynckel, L.; Defebvre, L.; Destée, A.; Bleuse, S.; Taymans, J.M.; Chartier-Harlin, M.C.; Hilfiker, Sabine
Keywordscentrosome cohesion, leucine-rich repeat kinase, protein phosphorylation, Rab protein
Issue Date2019
PublisherPortland Press
CitationBiochemical Journal 476: 2797- 2813 (2019)
AbstractLeucine-rich repeat kinase 2 (LRRK2) is a promising therapeutic target for the treatment of Parkinson's disease (PD), and orally bioavailable, brain penetrant and highly potent LRRK2 kinase inhibitors are in early stages of clinical testing. Detection of LRRK2 phosphorylation, as well as phosphorylation of Rab10, a LRRK2 kinase substrate, have been proposed as target engagement biomarkers for LRRK2 inhibitor clinical trials. However, these readouts do not seem able to stratify patients based on enhanced LRRK2 kinase activity. Here, we describe a robust cell biological assay based on centrosomal cohesion alterations which were observed in peripheral blood mononuclear cellderived lymphoblastoid cell lines (LCLs) from patients with G2019S LRRK2 mutations as compared with healthy controls, and could also be detected in a subset of sporadic PD patient samples. We suggest that LCLs may be a valuable resource for LRRK2 research, and that determination of centrosomal cohesion deficits may assist in the stratification of a subset of sporadic PD patients.
Publisher version (URL)http://dx.doi.org/10.1042/BCJ20190315
Identifiersdoi: 10.1042/BCJ20190315
issn: 0264-6021
e-issn: 1470-8728
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