技术关键元素暴露显示了不同的人类细胞的不同毒性,尽管摄入量相似
Tudor-Mihai Magdaș1,2, Gabriela Adriana Filip2,3, Adriana Dehelean2
1Anesthesia and Intensive Care Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
技术关键元素 (TCE) 具有多种毒性. 正常细胞是脆弱的,而癌细胞则抵抗,酸甚至促进癌细胞生长,表明复杂的生物效应.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 技术关键元素 (TCE) 的使用越来越多,导致环境释放和潜在的健康问题.
- 新出现的证据表明,TCE具有显著的毒性,需要对其生物效应进行调查.
研究的目的:
- 调查氧化物,兰酸六和酸六对人类皮肤纤维细胞 (BJ) 和肝癌细胞 (HepG2) 的生物学影响.
- 评估TCE吸收,对细胞活力的影响,以及细胞应激反应,包括炎症,氧化应激和膜损伤.
主要方法:
- 对BJ纤维细胞和HepG2细胞暴露于选择的TCEs.
- 量化TCE吸收,细胞活力测定和细胞压力标志物的测量.
- 对抗氧化剂反应的差异敏感性和相关性的分析.
主要成果:
- 人体皮肤纤维细胞 (BJ) 对TCEs表现出脆弱性,而HepG2细胞表现出高耐药性,尽管两种细胞系中的TCE积累相似.
- 差异性毒性与细胞类型之间对立的抗氧化剂反应密切相关.
- 低度的 (III) 酸盐刺激了HepG2细胞的增殖 (对照组高达129%).
结论:
- TCEs的毒性不仅仅取决于吸收量,这表明了复杂的作用机制.
- 这些发现突出了低水平TCE暴露的潜在机械危害,特别是酸对癌细胞的增殖作用.
- 需要对更复杂的生物模型进行进一步的研究,以充分了解TCE暴露的影响.
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