PMID- 20671708 OWN - NLM STAT- MEDLINE DCOM- 20100921 LR - 20211203 IS - 1476-4687 (Electronic) IS - 0028-0836 (Print) IS - 0028-0836 (Linking) VI - 466 IP - 7306 DP - 2010 Jul 29 TI - Pathogenic LRRK2 negatively regulates microRNA-mediated translational repression. PG - 637-41 LID - 10.1038/nature09191 [doi] AB - Gain-of-function mutations in leucine-rich repeat kinase 2 (LRRK2) cause familial as well as sporadic Parkinson's disease characterized by age-dependent degeneration of dopaminergic neurons. The molecular mechanism of LRRK2 action is not known. Here we show that LRRK2 interacts with the microRNA (miRNA) pathway to regulate protein synthesis. Drosophila e2f1 and dp messenger RNAs are translationally repressed by let-7 and miR-184*, respectively. Pathogenic LRRK2 antagonizes these miRNAs, leading to the overproduction of E2F1/DP, previously implicated in cell cycle and survival control and shown here to be critical for LRRK2 pathogenesis. Genetic deletion of let-7, antagomir-mediated blockage of let-7 and miR-184* action, transgenic expression of dp target protector, or replacement of endogenous dp with a dp transgene non-responsive to let-7 each had toxic effects similar to those of pathogenic LRRK2. Conversely, increasing the level of let-7 or miR-184* attenuated pathogenic LRRK2 effects. LRRK2 associated with Drosophila Argonaute-1 (dAgo1) or human Argonaute-2 (hAgo2) of the RNA-induced silencing complex (RISC). In aged fly brain, dAgo1 protein level was negatively regulated by LRRK2. Further, pathogenic LRRK2 promoted the association of phospho-4E-BP1 with hAgo2. Our results implicate deregulated synthesis of E2F1/DP caused by the miRNA pathway impairment as a key event in LRRK2 pathogenesis and suggest novel miRNA-based therapeutic strategies. FAU - Gehrke, Stephan AU - Gehrke S AD - Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA. sgehrke@stanford.edu FAU - Imai, Yuzuru AU - Imai Y FAU - Sokol, Nicholas AU - Sokol N FAU - Lu, Bingwei AU - Lu B LA - eng GR - R01AR054926/AR/NIAMS NIH HHS/United States GR - R21NS056878/NS/NINDS NIH HHS/United States GR - R01 MH080378/MH/NIMH NIH HHS/United States GR - R21 NS056878-01A1/NS/NINDS NIH HHS/United States GR - R01 MH080378-01A2/MH/NIMH NIH HHS/United States GR - R01MH080378/MH/NIMH NIH HHS/United States GR - R01 AR054926-01A2/AR/NIAMS NIH HHS/United States GR - R01 AR054926/AR/NIAMS NIH HHS/United States GR - R21 NS056878/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Nature JT - Nature JID - 0410462 RN - 0 (AGO1 protein, Drosophila) RN - 0 (AGO2 protein, human) RN - 0 (Argonaute Proteins) RN - 0 (Dp transcription factor, Drosophila) RN - 0 (Drosophila Proteins) RN - 0 (E2F1 Transcription Factor) RN - 0 (Eukaryotic Initiation Factor-2) RN - 0 (Eukaryotic Initiation Factors) RN - 0 (Let-7 microRNA, Drosophila) RN - 0 (MicroRNAs) RN - 0 (Mirn184 microRNA, Drosophila) RN - 0 (RNA, Messenger) RN - 0 (RNA-Induced Silencing Complex) RN - 0 (Trans-Activators) RN - EC 2.7.11.1 (LRRK protein, Drosophila) RN - EC 2.7.11.1 (LRRK2 protein, human) RN - EC 2.7.11.1 (Leucine-Rich Repeat Serine-Threonine Protein Kinase-2) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - VTD58H1Z2X (Dopamine) SB - IM CIN - Nat Rev Neurosci. 2010 Sep;11(9):609. PMID: 20803789 MH - Animals MH - Argonaute Proteins MH - Cell Line MH - Dopamine/metabolism MH - *Down-Regulation MH - Drosophila Proteins/biosynthesis/genetics/metabolism MH - Drosophila melanogaster MH - E2F1 Transcription Factor/biosynthesis/genetics/metabolism MH - Eukaryotic Initiation Factor-2/metabolism MH - Eukaryotic Initiation Factors/biosynthesis/metabolism MH - Female MH - Humans MH - Leucine-Rich Repeat Serine-Threonine Protein Kinase-2 MH - Male MH - MicroRNAs/antagonists & inhibitors/*genetics/*metabolism MH - Neurons/cytology/metabolism MH - Parkinson Disease/etiology/genetics/metabolism MH - Protein Binding MH - *Protein Biosynthesis MH - Protein Serine-Threonine Kinases/*genetics/*metabolism MH - RNA, Messenger/genetics/metabolism MH - RNA-Induced Silencing Complex/antagonists & inhibitors/chemistry/metabolism MH - Trans-Activators/biosynthesis/genetics/metabolism MH - Up-Regulation PMC - PMC3049892 MID - NIHMS269498 EDAT- 2010/07/31 06:00 MHDA- 2010/09/23 06:00 PMCR- 2011/03/08 CRDT- 2010/07/31 06:00 PHST- 2008/12/11 00:00 [received] PHST- 2010/05/20 00:00 [accepted] PHST- 2010/07/31 06:00 [entrez] PHST- 2010/07/31 06:00 [pubmed] PHST- 2010/09/23 06:00 [medline] PHST- 2011/03/08 00:00 [pmc-release] AID - nature09191 [pii] AID - 10.1038/nature09191 [doi] PST - ppublish SO - Nature. 2010 Jul 29;466(7306):637-41. doi: 10.1038/nature09191.