Effect of αB-crystallin on protein aggregation in Drosophila.

Effect of αB-crystallin on protein aggregation in Drosophila.
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DOI:
10.1155/2012/252049
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发表时间:
2012
影响因子:
--
通讯作者:
Yamaguchi M
Yamaguchi M
中科院分区:
其他
文献类型:
--
作者:
Tue NT;Shimaji K;Tanaka N;Yamaguchi M

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含有扩展的聚谷氨酰胺(polyQ)重复序列的蛋白质的紊乱和聚集,或α-突触核蛋白的异位表达,是神经退行性疾病的基础,包括阿尔茨海默病、帕金森病、亨廷顿病、克雅氏病。小的热休克蛋白,如α b -晶体蛋白,作为伴侣防止蛋白质聚集,并在预防这类蛋白质紊乱疾病中发挥关键作用。在这项研究中,我们探索了α b -晶体蛋白的伴侣活性抑制蛋白质聚集体形成的潜力。我们测试了αB-crystallin在果蝇体内抑制polyQ蛋白和α-synuclein聚集的能力。我们发现αB-crystallin抑制polyQ诱导的复眼变性和α-synuclein诱导的粗糙眼表型。此外,通过组织化学染色,我们确定α b -晶体蛋白在体内抑制polyQ的聚集。这些数据为神经退行性疾病治疗方法的发展提供了线索。
Disorganisation and aggregation of proteins containing expanded polyglutamine (polyQ) repeats, or ectopic expression of α-synuclein, underlie neurodegenerative diseases including Alzheimer's, Parkinson, Huntington, Creutzfeldt diseases. Small heat-shock proteins, such as αB-crystallin, act as chaperones to prevent protein aggregation and play a key role in the prevention of such protein disorganisation diseases. In this study, we have explored the potential for chaperone activity of αB-crystallin to suppress the formation of protein aggregates. We tested the ability of αB-crystallin to suppress the aggregation of a polyQ protein and α-synuclein in Drosophila. We found that αB-crystallin suppresses both the compound eye degeneration induced by polyQ and the α-synuclein-induced rough eye phenotype. Furthermore, by using histochemical staining we have determined that αB-crystallin inhibits the aggregation of polyQ in vivo. These data provide a clue for the development of therapeutics for neurodegenerative diseases.
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