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Proteasomal Oscillation during Mild Heat Shock in Aging Human Skin Fibroblasts

机译:人类皮肤成纤维细胞轻度热休克期间的蛋白酶体振荡

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摘要

Augmentation of proteasome machinery is emerging as a significant gerontomodulatory consequence of hormetic stimulation, such as mild heat stress. This study describes the phenomenon we term hormetic proteasomal oscillation, wherein mildly heat-stressed human fibroblasts (41℃, 1 h) display an adaptation response pattern in proteasome activity. Remarkably, such response appears to be diverse in severely heat-stressed or senescent fibroblasts. This proteasomal oscillation, as an innate cellular reaction to heat and aging, however, is independent of 20S proteasome protein levels and nuclear factor-E2-related factor 2 (Nrf2) transactivation.
机译:蛋白酶体机制的增强已成为诸如刺激性温和刺激之类的刺激性刺激的重要促神经调节作用。这项研究描述了我们称之为荷尔蒙蛋白酶体振荡的现象,其中轻度热应激的人成纤维细胞(41℃,1 h)在蛋白酶体活性中显示出适应性反应模式。值得注意的是,在严重的热应激或衰老的成纤维细胞中,这种反应似乎是多种多样的。这种蛋白酶体振荡,作为对热量和衰老的先天细胞反应,与20S蛋白酶体蛋白水平和核因子-E2相关因子2(Nrf2)反式激活无关。

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