双酚 A 通过抑制细胞增殖和诱导 G2/M 细胞周期阻滞促进健康呼吸系统细胞的死亡。
Bisphenol A promotes cell death in healthy respiratory system cells through inhibition of cell proliferation and induction of G2/M cell cycle arrest.
机构信息
Department of Biology, Faculty of Science, Atatürk University, Erzurum, Turkey.
East Anatolia High Technology Application and Research Center (DAYTAM), Atatürk University, Erzurum, Turkey.
出版信息
Environ Toxicol. 2024 May;39(5):3264-3273. doi: 10.1002/tox.24203. Epub 2024 Mar 8.
Bisphenol A (BPA) is a substance that can harm the environment and human health by interfering with the normal functioning of the body's hormonal system. It is commonly found in various plastic-based products such as cosmetics, canned foods, beverage containers, and medical equipment and as well as it can also be absorbed by inhalation. There have been limited studies on the effects of BPA on lung fibroblasts, and it is still unclear how high levels of BPA can impact respiratory system cells, particularly the lungs and trachea. In this research, we aimed to investigate the cell cycle disruption potential of BPA on respiratory system cells by examining healthy trachea and lung cells together for the first time. The findings indicated that BPA exposure can alter the healthy cells' morphology, leading to reduced cellular viability that has been assessed by MTT and SRB assays. BPA treatment was able to activate caspase3 as expected, which could cause apoptosis in treated cells. Although the highest dose of BPA did not increase the apoptotic rate of rat trachea cells, it remarkably caused them to become necrotic (52.12%). In addition to quantifying the induction of apoptosis and necrosis by BPA, cell cycle profiles were also determined using flow cytometry. Thereby, BPA treatment unexpectedly inhibited the cell cycle's progression by causing G2/M cell cycle arrest in both lung and tracheal cells, which hindered cell proliferation. The findings of the study suggested that exposure to BPA could lead to serious respiratory problems, even respiratory tract cancers via alterations in the cell cycle.
双酚 A(BPA)是一种物质,它可以通过干扰身体荷尔蒙系统的正常功能来危害环境和人类健康。它通常存在于各种基于塑料的产品中,如化妆品、罐头食品、饮料容器和医疗设备,也可以通过吸入被吸收。目前对 BPA 对肺成纤维细胞的影响的研究有限,目前尚不清楚高水平的 BPA 如何影响呼吸系统细胞,特别是肺部和气管。在这项研究中,我们首次旨在通过同时检查健康的气管和肺细胞,研究 BPA 对呼吸系统细胞的细胞周期破坏潜力。研究结果表明,BPA 暴露会改变健康细胞的形态,导致 MTT 和 SRB 测定评估的细胞活力降低。BPA 处理能够如预期的那样激活 caspase3,从而导致处理细胞发生凋亡。虽然 BPA 的最高剂量没有增加大鼠气管细胞的凋亡率,但它显著导致它们发生坏死(52.12%)。除了定量 BPA 诱导的凋亡和坏死之外,还通过流式细胞术确定了细胞周期图谱。出乎意料的是,BPA 处理通过在肺和气管细胞中引起 G2/M 细胞周期阻滞而意外地抑制了细胞周期的进展,从而阻碍了细胞增殖。研究结果表明,暴露于 BPA 可能会导致严重的呼吸问题,甚至通过改变细胞周期导致呼吸道癌症。