Protein misfolding and aggregation in cataract disease and prospects for prevention.

Protein misfolding and aggregation in cataract disease and prospects for prevention.
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DOI:
10.1016/j.molmed.2012.03.005
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发表时间:
2012-05
影响因子:
13.6
通讯作者:
King JA
King JA
中科院分区:
医学1区
文献类型:
--
作者:
Moreau KL;King JA

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眼球晶状体的透明度取决于维持天然三级结构和晶状体结晶蛋白在一生中的溶解度。白内障是全球致盲的主要原因,是由受保护晶状体环境中的蛋白质聚集引起的。随着年龄的增长,共价蛋白的损伤通过紫外线辐射、氧化、脱酰胺和截断等途径积累。实验表明,由此产生的蛋白质不稳定导致部分展开,易于聚集的中间体和不溶的光散射蛋白质聚集体的形成。这些聚集体包括或压倒了晶状体的蛋白质伴侣含量。在这里,我们回顾了白内障的原因和正在研究的非手术方法来抑制或延缓白内障的发展,包括天然产物为基础的疗法,氧化调节剂和蛋白质聚集抑制剂。
The transparency of the eye lens depends on maintaining the native tertiary structures and solubility of the lens crystallin proteins over a lifetime. Cataract, the leading cause of blindness worldwide, is caused by protein aggregation within the protected lens environment. With age, covalent protein damage accumulates through pathways thought to include UV radiation, oxidation, deamidation, and truncations. Experiments suggest that the resulting protein destabilization leads to partially unfolded, aggregation-prone intermediates and the formation of insoluble, light-scattering protein aggregates. These aggregates either include or overwhelm the protein chaperone content of the lens. Here we review the causes of cataracts and non-surgical methods being investigated to inhibit or delay cataract development, including natural product-based therapies, modulators of oxidation, and protein aggregation inhibitors.
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