Journal ArticleDOI
Drosophila pink1 is required for mitochondrial function and interacts genetically with parkin.
Ira E. Clark,Mark W. Dodson,Changan Jiang,Joseph Cao,Jun R. Huh,Jae Hong Seol,Soon Ji Yoo,Bruce A. Hay,Ming Guo +8 more
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TLDR
Removal of Drosophila PINK1 homologue function results in male sterility, apoptotic muscle degeneration, defects in mitochondrial morphology and increased sensitivity to multiple stresses including oxidative stress, which underscores the importance of mitochondrial dysfunction as a central mechanism of Parkinson's disease pathogenesis.Abstract:
Parkinson's disease is the second most common neurodegenerative disorder and is characterized by the degeneration of dopaminergic neurons in the substantia nigra. Mitochondrial dysfunction has been implicated as an important trigger for Parkinson's disease-like pathogenesis because exposure to environmental mitochondrial toxins leads to Parkinson's disease-like pathology. Recently, multiple genes mediating familial forms of Parkinson's disease have been identified, including PTEN-induced kinase 1 (PINK1 ; PARK6 ) and parkin (PARK2 ), which are also associated with sporadic forms of Parkinson's disease. PINK1 encodes a putative serine/threonine kinase with a mitochondrial targeting sequence. So far, no in vivo studies have been reported for pink1 in any model system. Here we show that removal of Drosophila PINK1 homologue (CG4523; hereafter called pink1) function results in male sterility, apoptotic muscle degeneration, defects in mitochondrial morphology and increased sensitivity to multiple stresses including oxidative stress. Pink1 localizes to mitochondria, and mitochondrial cristae are fragmented in pink1 mutants. Expression of human PINK1 in the Drosophila testes restores male fertility and normal mitochondrial morphology in a portion of pink1 mutants, demonstrating functional conservation between human and Drosophila Pink1. Loss of Drosophila parkin shows phenotypes similar to loss of pink1 function. Notably, overexpression of parkin rescues the male sterility and mitochondrial morphology defects of pink1 mutants, whereas double mutants removing both pink1 and parkin function show muscle phenotypes identical to those observed in either mutant alone. These observations suggest that pink1 and parkin function, at least in part, in the same pathway, with pink1 functioning upstream of parkin. The role of the pink1–parkin pathway in regulating mitochondrial function underscores the importance of mitochondrial dysfunction as a central mechanism of Parkinson's disease pathogenesis.read more
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Parkin is recruited selectively to impaired mitochondria and promotes their autophagy
TL;DR: It is shown that Parkin is selectively recruited to dysfunctional mitochondria with low membrane potential in mammalian cells and this recruitment promotes autophagy of damaged mitochondria and implicate a failure to eliminate dysfunctional mitochondira in the pathogenesis of Parkinson's disease.
Journal ArticleDOI
Mechanisms of mitophagy
TL;DR: Mitophagy, the specific autophagic elimination of mitochondria, has been identified in yeast, and in mammals during red blood cell differentiation, mediated by NIP3-like protein X (NIX; also known as BNIP3L).
Journal ArticleDOI
Mitochondrial Fission, Fusion, and Stress
TL;DR: In their Perspective, Hoppins and Nunnari explain that the endoplasmic reticulum is an active participant in mitochondrial division and discuss how mitochondrial dynamics and cell death are linked.
Journal ArticleDOI
PINK1 is selectively stabilized on impaired mitochondria to activate Parkin.
Derek P. Narendra,Seok Min Jin,Atsushi Tanaka,Der-Fen Suen,Clement A. Gautier,Jie Shen,Mark R. Cookson,Richard J. Youle +7 more
TL;DR: The authors suggest that PINK1 and Parkin form a pathway that senses damaged mitochondria and selectively targets them for degradation.
Journal ArticleDOI
PINK1/Parkin-mediated mitophagy is dependent on VDAC1 and p62/SQSTM1
Sven Geisler,Kira M. Holmström,Diana Skujat,Fabienne C. Fiesel,Oliver Rothfuss,Philipp J. Kahle,Wolfdieter Springer +6 more
TL;DR: Functional links between PINK1, Parkin and the selective autophagy of mitochondria, which is implicated in the pathogenesis of Parkinson's disease, are provided.
References
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Journal ArticleDOI
Targeted gene expression as a means of altering cell fates and generating dominant phenotypes.
Andrea H. Brand,Norbert Perrimon +1 more
TL;DR: The GAL4 system, a system for targeted gene expression that allows the selective activation of any cloned gene in a wide variety of tissue- and cell-specific patterns, has been designed and used to expand the domain of embryonic expression of the homeobox protein even-skipped.
Journal ArticleDOI
Staging of brain pathology related to sporadic Parkinson’s disease
TL;DR: This study traces the course of the pathology in incidental and symptomatic Parkinson cases proposing a staging procedure based upon the readily recognizable topographical extent of the lesions.
Journal ArticleDOI
Mutations in the parkin gene cause autosomal recessive juvenile parkinsonism
Tohru Kitada,Shuichi Asakawa,Nobutaka Hattori,Hiroto Matsumine,Yasuhiro Yamamura,Shinsei Minoshima,Masayuki Yokochi,Yoshikuni Mizuno,Nobuyoshi Shimizu +8 more
TL;DR: Mutations in the newly identified gene appear to be responsible for the pathogenesis of Autosomal recessive juvenile parkinsonism, and the protein product is named ‘Parkin’.
Journal ArticleDOI
Hereditary Early-Onset Parkinson's Disease Caused by Mutations in PINK1
Eriza Maria Valente,Patrick M. Abou-Sleiman,Viviana Caputo,Miratul M. K. Muqit,Kirsten Harvey,Suzana Gispert,Zeeshan Ali,Domenico Del Turco,Anna Rita Bentivoglio,Daniel G. Healy,Alberto Albanese,Robert L. Nussbaum,Rafael González-Maldonado,Thomas Deller,S Salvi,Pietro Cortelli,William P. Gilks,David S. Latchman,Roberk J. Harvey,Bruno Dallapiccola,Georg Auburger,Nicholas W. Wood +21 more
TL;DR: The identification of two homozygous mutations affecting the PINK1 kinase domain in three consanguineous PARK6 families provide a direct molecular link between mitochondria and the pathogenesis of PD.
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Hereditary Early-Onset Parkinson's Disease Caused by Mutations in PINK1
Eriza Maria Valente,Patrick M. Abou-Sleiman,Viviana Caputo,Miratul M. K. Muqit,Kirsten Harvey,Suzana Gispert,Zeeshan Ali,Domenico Del Turco,Anna Rita Bentivoglio,Daniel G. Healy,Alberto Albanese,Robert L. Nussbaum,Rafael González-Maldonado,Thomas Deller,S Salvi,Pietro Cortelli,William P. Gilks,David S. Latchman,Roberk J. Harvey,Bruno Dallapiccola,Georg Auburger,Nicholas W. Wood +21 more