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Intracellular Refolding Assay
Published on: January 24, 2012
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极低频电磁场诱导热冲击蛋白的乙化,并增强蛋白质折叠
Zhizhou Huang1, Mikako Ito1, Shaochuan Zhang1
1Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Ecotoxicology and environmental safety
|September 17, 2023
概括
极低频电磁场 (ELF-EMF) 增强热冲击蛋白 (HSP) 乙化,改善蛋白质折叠和细胞活力. 这些发现表明ELF-EMF在治疗人类疾病中的潜在治疗应用.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 分子生物学分子生物学
背景情况:
- 工业化社会暴露于普遍存在的弱电磁场 (EMF).
- 低强度电磁场 (如10μT) 的生物效应仍未得到充分研究.
- 热冲击蛋白 (HSP),如HSP70和HSP90,是参与蛋白质平衡的关键分子伴侣.
研究的目的:
- 研究极低频电磁场 (ELF-EMF) 对细胞应激反应的影响.
- 分析ELF-EMF对HSP70和HSP90乙化和功能的影响.
- 评估ELF-EMF对线粒体活动,蛋白质聚合和细胞活力的影响.
主要方法:
- AML12和HEK293细胞暴露于ELF-EMF.
- 对HSP70和HSP90蛋白质表达和乙化水平的分析.
- 测量HSP70/HSP90组织蛋白 (HOP/STIP1) 的结合亲缘关系.
- 评估线粒体含量,ATP水平和氧气消耗.
- 蛋白质聚合物和细胞活性的量化.
主要成果:
- 暴露于ELF-EMF (3h) 减少了HSP70/HSP90的表达,但增加了它们的乙化和与HOP/STIP1.1的结合亲和力.
- 线粒体数量下降,而ATP水平和氧气消耗在3小时ELF-EMF暴露后增加.
- 暴露于ELF-EMF导致蛋白质聚合物减少和细胞活力增强,影响在12小时后恢复到基础水平.
- 观察到的效应表明ELF-EMF激活HSP乙化以促进蛋白质折叠.
结论:
- 短期ELF-EMF暴露 (3h) 通过HSP乙化增强细胞蛋白质稳定.
- 增加HSP乙化改善了蛋白质折叠能力和细胞活力.
- 这些发现表明,ELF-EMF对于与蛋白质错折相关的人类病理状况的潜在治疗应用.
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