Network organization of the huntingtin proteomic interactome in mammalian brain.
Network organization of the huntingtin proteomic interactome in mammalian brain.
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DOI:
10.1016/j.neuron.2012.05.024
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发表时间:
2012-07-12
期刊:
影响因子:
16.2
通讯作者:
Yang XW
中科院分区:
文献类型:
--
作者:
Shirasaki DI;Greiner ER;Al-Ramahi I;Gray M;Boontheung P;Geschwind DH;Botas J;Coppola G;Horvath S;Loo JA;Yang XW
We used affinity-purification mass spectrometry to identify 747 candidate proteins that are complexed with Huntingtin (Htt) in distinct brain regions and ages in Huntington’s disease (HD) and wildtype mouse brains. To gain a systems-level view of the Htt interactome, we applied Weighted Gene Correlation Network Analysis (WGCNA) to the entire proteomic dataset to unveil a verifiable rank of Htt-correlated proteins and a network of Htt-interacting protein modules, with each module highlighting distinct aspects of Htt biology. Importantly, the Htt-containing module is highly enriched with proteins involved in 14-3-3 signaling, microtubule-based transport, and proteostasis. Top-ranked proteins in this module were validated as novel Htt interactors and genetic modifiers in an HD Drosophila model. Together, our study provides a compendium of spatiotemporal Htt-interacting proteins in the mammalian brain, and presents a conceptually novel approach to analyze proteomic interactome datasets to build in vivo protein networks in complex tissues such as the brain.
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