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Updated: Jul 25, 2025

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Intracellular Refolding Assay
Published on: January 24, 2012
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甲通过热冲击蛋白90调节伴侣介导的自
Min Su1, Shuhong Zhou2, Jun Li3
1School of Pharmacy, Inner Mongolia Medical University, Hohhot, China.
Toxicology letters
|June 30, 2023
概括
甲 (BaP) 暴露会通过热冲击蛋白90 (HSP90) 引起DNA损伤和自. 这项研究揭示了BaP通过HSP90调节Chaperone-Mediated Autophagy (CMA),澄清了其分子机制.
科学领域:
- 环境毒理学环境毒理学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 甲 (BaP) 是一种已知的环境污染物,可诱导氧化损伤,DNA损伤和自.
- 对于BaP对自的作用背后的精确分子机制尚不清楚.
- 热冲击蛋白90 (HSP90) 在细胞应激反应和自中起着至关重要的作用,是癌症治疗的目标.
研究的目的:
- 阐明BaP通过HSP90.90调节Chaperone-Mediated Autophagy (CMA) 的新型机制.
- 研究HSP90在BaP诱导的DNA损伤和自中的作用.
主要方法:
- 鼠被暴露于BaP,A549细胞被BaP处理.
- 用MTT测定来评估细胞增殖.
- 用性彗星测定和γ-H2AX免疫光检测来评估DNA损伤.
- 对HSP90,HSC70和Lamp-2a (mRNA和蛋白质) 的表达水平通过qPCR和西欧斑块测定.
- 通过使用NVP-AUY 922或HSP90αshRNA lentivirus来抑制HSP90的表达.
主要成果:
- 在肺组织和A549细胞中,BaP暴露显著增加了HSP90,HSC70和Lamp-2a的表达.
- BaP诱导了DNA双链断裂,并激活了DNA损伤反应.
- 使用NVP-AUY 922或HSP90α小RNA对HSP90进行抑制,阻止了BAP诱导的HSC70和Lamp-2a的增加,这表明BAP诱导的CMA依赖于HSP90.
- 这些发现表明BaP调节CMA,并通过HSP90.0.引起DNA损伤.
结论:
- 巴普通过HSP90.0.监管CMA通过HSP90.0.
- HSP90与调解BaP诱导的基因不稳定性和促进CMA有关.
- 这项研究阐明了BaP对自的作用机制,提高了对BaP作用的理解.
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