共 69 条
Huntingtin Is Required for Mitotic Spindle Orientation and Mammalian Neurogenesis
被引:208
作者:
Godin, Juliette D.
[1
,2
,3
]
Colombo, Kelly
[1
,2
,3
]
Molina-Calavita, Maria
[1
,2
,3
]
Keryer, Guy
[1
,2
,3
]
Zala, Diana
[1
,2
,3
]
Charrin, Benedicte C.
[1
,2
,3
]
Dietrich, Paula
[4
]
Volvert, Marie-Laure
[5
]
Guillemot, Francois
[6
]
Dragatsis, Ioannis
[4
]
Bellaiche, Yohanns
[1
,7
]
Saudou, Frederic
[1
,2
,3
]
Nguyen, Laurent
[5
]
Humbert, Sandrine
[1
,2
,3
]
机构:
[1] Inst Curie, F-91405 Orsay, France
[2] CNRS, UMR 3306, F-91405 Orsay, France
[3] INSERM, U1005, F-91405 Orsay, France
[4] Univ Tennessee, Hlth Sci Ctr, Dept Physiol, Memphis, TN 38163 USA
[5] Univ Liege, Dev Neurobiol Unit, GIGA Neurosci, B-4000 Liege, Belgium
[6] Natl Inst Med Res, Div Mol Neurobiol, London NW7 1AA, England
[7] Univ Paris 06, CNRS, U934, UMR 3215,INSERM, F-75248 Paris, France
来源:
基金:
瑞士国家科学基金会;
关键词:
ASYMMETRIC CELL-DIVISION;
DISEASE GENE HOMOLOG;
NEURAL STEM-CELLS;
WILD-TYPE;
DROSOPHILA NEUROBLASTS;
CAENORHABDITIS-ELEGANS;
EMBRYONIC LETHALITY;
CYTOPLASMIC DYNEIN;
BINDING-PROTEIN;
BUDDING YEAST;
D O I:
10.1016/j.neuron.2010.06.027
中图分类号:
Q189 [神经科学];
学科分类号:
071006 ;
摘要:
Huntingtin is the protein mutated in Huntington's disease, a devastating neurodegenerative disorder. We demonstrate here that huntingtin is essential to control mitosis. Huntingtin is localized at spindle poles during mitosis. RNAi-mediated silencing of huntingtin in cells disrupts spindle orientation by mislocalizing the p150(Glued) subunit of dynactin, dynein, and the large nuclear mitotic apparatus NuMA protein. This leads to increased apoptosis following mitosis of adherent cells in vitro. In vivo inactivation of huntingtin by RNAi or by ablation of the Hdh gene affects spindle orientation and cell fate of cortical progenitors of the ventricular zone in mouse embryos. This function is conserved in Drosophila, the specific disruption of Drosophila huntingtin in neuroblast precursors leading to spindle misorientation. Moreover, Drosophila huntingtin restores spindle misorientation in mammalian cells. These findings reveal an unexpected role for huntingtin in dividing cells, with potential important implications in health and disease.
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页码:392 / 406
页数:15
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