环双甲基替代物强烈抑制人类,老鼠和小鼠的淋巴腺3β-基类固醇脱酶:结构-活性关系和合分析
Yang Yu1, Zheyuan Ren1, Hong Wang1
1Department of Anaesthesiology of the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
一些替代 Bisphenol A (BPA) 的替代物可以强烈抑制 3β-基类固醇脱酶/Δ5,4-异构酶 (3β-HSDs) 在不同物种的生殖腺中. 脂性和结合性是影响其抑制功能的关键因素.
科学领域:
- 内分泌学和毒理学.
- 类固醇生物化学 类固醇生物化学
- 环境健康 环境健康
背景情况:
- 双甲 (BPA) 是一种可塑剂,已知可以抑制3β-基固醇脱酶/Δ5,4-异构酶 (3β-HSDs).
- BPA 替代品对淋巴体3β-HSD 的抑制作用及其结构-活性关系在很大程度上仍未被描述.
- 了解这些相互作用对于评估潜在的内分泌干扰效应至关重要.
研究的目的:
- 调查六种环BPA替代品在人类,老鼠和小鼠淋巴体3β-HSDs上的抑制潜力.
- 阐明这些化合物抑制3β-HSDs的结构-活性关系.
- 探索抑制的潜在分子机制.
主要方法:
- 使用人类 (3β-HSD2),大鼠 (3β-HSD1) 和小鼠 (3β-HSD6) 淋巴腺3β-HSDs进行比较性酶抑制试验.
- 结构-活性关系分析,将化学性质 (例如,LogP,ΔG) 与抑制活性 (IC50) 相关联.
- 在分子对接中可视化3β-HSD活性位点内的结合相互作用.
主要成果:
- 几种BPA替代物,特别是双H (BPH),在物种之间表现出强烈的淋巴体3β-HSD抑制,IC50值明显低于BPA.
- 抑制活性与脂友性 (LogP) 反相关,与结合自由能量 (ΔG) 呈正相关.
- 分子对接证实,这些化合物与3β-HSD酶的类固醇结合活性部位结合.
结论:
- 某些环BPA替代品是人类,老鼠和小鼠淋巴体3β-HSDs的强有力的抑制剂.
- 脂性和结合亲和力是这些BPA替代物的抑制强度的关键决定因素.
- 这些发现凸显了与BPA替代品相关的潜在内分泌干扰问题.
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