TY - JOUR
T1 - CLP1 founder mutation links tRNA splicing and maturation to cerebellar development and neurodegeneration
AU - Schaffer, Ashleigh E.
AU - Eggens, Veerle R. C.
AU - Caglayan, Ahmet Okay
AU - Reuter, Miriam S.
AU - Scott, Eric
AU - Coufal, Nicole G.
AU - Silhavy, Jennifer L.
AU - Xue, Yuanchao
AU - Kayserili, Hulya
AU - Yasuno, Katsuhito
AU - Rosti, Rasim Ozgur
AU - Abdellateef, Mostafa
AU - Caglar, Caner
AU - Kasher, Paul R.
AU - Cazemier, J. Leonie
AU - Weterman, Marian A.
AU - Cantagrel, Vincent
AU - Cai, Na
AU - Zweier, Christiane
AU - Altunoglu, Umut
AU - Satkin, N. Bilge
AU - Aktar, Fesih
AU - Tuysuz, Beyhan
AU - Yalcinkaya, Cengiz
AU - Caksen, Huseyin
AU - Bilguvar, Kaya
AU - Fu, Xiang-Dong
AU - Trotta, Christopher R.
AU - Gabriel, Stacey
AU - Reis, André
AU - Gunel, Murat
AU - Baas, Frank
AU - Gleeson, Joseph G.
PY - 2014
Y1 - 2014
N2 - Neurodegenerative diseases can occur so early as to affect neurodevelopment. From a cohort of more than 2,000 consanguineous families with childhood neurological disease, we identified a founder mutation in four independent pedigrees in cleavage and polyadenylation factor I subunit 1 (CLP1). CLP1 is a multifunctional kinase implicated in tRNA, mRNA, and siRNA maturation. Kinase activity of the CLP1 mutant protein was defective, and the tRNA endonuclease complex (TSEN) was destabilized, resulting in impaired pre-tRNA cleavage. Germline clp1 null zebrafish showed cerebellar neurodegeneration that was rescued by wild-type, but not mutant, human CLP1 expression. Patient-derived induced neurons displayed both depletion of mature tRNAs and accumulation of unspliced pre-tRNAs. Transfection of partially processed tRNA fragments into patient cells exacerbated an oxidative stress-induced reduction in cell survival. Our data link tRNA maturation to neuronal development and neurodegeneration through defective CLP1 function in humans
AB - Neurodegenerative diseases can occur so early as to affect neurodevelopment. From a cohort of more than 2,000 consanguineous families with childhood neurological disease, we identified a founder mutation in four independent pedigrees in cleavage and polyadenylation factor I subunit 1 (CLP1). CLP1 is a multifunctional kinase implicated in tRNA, mRNA, and siRNA maturation. Kinase activity of the CLP1 mutant protein was defective, and the tRNA endonuclease complex (TSEN) was destabilized, resulting in impaired pre-tRNA cleavage. Germline clp1 null zebrafish showed cerebellar neurodegeneration that was rescued by wild-type, but not mutant, human CLP1 expression. Patient-derived induced neurons displayed both depletion of mature tRNAs and accumulation of unspliced pre-tRNAs. Transfection of partially processed tRNA fragments into patient cells exacerbated an oxidative stress-induced reduction in cell survival. Our data link tRNA maturation to neuronal development and neurodegeneration through defective CLP1 function in humans
U2 - https://doi.org/10.1016/j.cell.2014.03.049
DO - https://doi.org/10.1016/j.cell.2014.03.049
M3 - Article
C2 - 24766810
SN - 0092-8674
VL - 157
SP - 651
EP - 663
JO - Cell
JF - Cell
IS - 3
ER -