Role of cytoskeletal proteins in cerebral cavernous malformation signaling pathways: a proteomic analysis.

Role of cytoskeletal proteins in cerebral cavernous malformation signaling pathways: a proteomic analysis.
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DOI:
10.1039/c3mb70199a
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发表时间:
2014-07
影响因子:
--
通讯作者:
Bencharit S
Bencharit S
中科院分区:
生物3区
文献类型:
--
作者:
Baxter SS;Dibble CF;Byrd WC;Carlson J;Mack CR;Saldarriaga I;Bencharit S

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脑海绵状血管瘤的体外蛋白质组学和系统生物学。三种基因突变被发现会导致脑海绵状血管瘤(CCM),这是一种血管异常,使受影响的个体容易患出血性中风。这些 CCM 蛋白在细胞中作为蛋白复合物一起发挥作用。每个 CCM 基因表达的丧失都会导致体外内皮管形成的丧失。使用多维液相色谱/串联质谱 (2D-LC-MS/MS) 进行无标记差异蛋白表达分析,以探索与模拟 shRNA 和无 shRNA 对照细胞系相比,小鼠内皮干细胞 (MEES) 中每个 CCM 基因表达缺失的蛋白质组谱。鉴定出差异表达的蛋白质(p < 0.05)。 120种蛋白质在细胞系中差异表达。主成分分析和聚类分析显示了个体击倒的影响。在所有敲低细胞系中,细胞骨架蛋白表达的改变是最常见的。虽然所有 CCM 突变都会导致相似的病理学,但不同的 CCM 突变在细胞信号传导方面有其独特的发病机制。
An in vitro proteomics and systems biology of cerebral cavernous malformation. Three genetic mutations were found to cause cerebral cavernous malformation (CCM), a vascular anomaly predisposing affected individuals to hemorrhagic stroke. These CCM proteins function together as a protein complex in the cell. Loss of expression of each CCM gene results in loss of in vitro endothelial tube formation. Label-free differential protein expression analysis using multidimensional liquid chromatography/tandem mass spectrometry (2D-LC-MS/MS) was applied to explore the proteomic profile for loss of each CCM gene expression in mouse endothelial stem cells (MEES) compared to mock shRNA and no shRNA control cell-lines. Differentially expressed proteins were identified (p < 0.05). 120 proteins were differentially expressed among the cell-lines. Principal component analysis and cluster analysis show the effects of individual knockdown. In all knockdown cell-lines, altered expression of cytoskeletal proteins is the most common. While all CCM mutations result in similar pathology, different CCM mutations have their own distinct pathogenesis in cell signaling.
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