一个关于多化双暴露的人类致癌机制的in silico研究
Luze Yang1, Peixuan Sun2, Li Tao1
1College of Resources and Environment, Jilin Agricultural University, Changchun, 130118, China.
Chemico-biological interactions
|May 30, 2024
概括
聚乙 (PBBs) 通过与关键蛋白质相互作用,可以导致甲状腺癌. 这项研究揭示了 PBBs及其代谢物如何与甲状腺素结合球蛋白结合,概述了 PBB 诱导的甲状腺癌的途径.
科学领域:
- 环境毒理学环境毒理学
- 分子致癌症的产生.
- 计算化学计算化学
背景情况:
- 聚乙 (PBBs) 与增加甲状腺癌风险有关.
- 对 PBB 诱导的甲状腺癌的机制性理解是有限的.
- 研究分子通路对于风险评估至关重要.
研究的目的:
- 为了阐明 PBB 诱导的人类甲状腺癌的机制.
- 为 PBBs.构建一个不利结果路径 (AOP).
- 为了确定驱动PBB致癌性的关键分子相互作用.
主要方法:
- 利用分子对接和动力学模拟来研究PBB通过细胞染色体P450.0的代谢.
- 通过分析 PBB 和代谢物与甲状腺素结合球蛋白 (TBG) 的相互作用,构建了一个 AOP.
- 应用二维定量结构-活性关系 (2D-QSAR) 模型来评估结合能和氨基酸贡献.
主要成果:
- 通过细胞染色体P450和烯碳水化合物受体介导形成的已识别的单和二氧化PBB代谢物.
- 证明PBB及其代谢物主要通过疏水和键相互作用与TBG结合.
- 突出了alanine 330, arginine 381和lysine 270作为 PBB-TBG结合中的关键氨基酸.
结论:
- 键和范德瓦尔斯力在PBB致癌性AOP中至关重要.
- 通过涉及TBG相互作用的机制, PBBs对人类健康构成风险.
- 这项研究为与 PBB 相关的甲状腺癌的分子基础提供了重要的见解.
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