甲醛
膜
化学
毒性
微流控
A549电池
微流控芯片
图层(电子)
细胞
生物物理学
色谱法
材料科学
纳米技术
生物化学
生物
有机化学
作者
Meini Su,Xiang Li,Zezhi Li,Chenlei Hua,Pingping Shang,Junwei Zhao,Kejian Liu,Fuwei Xie
标识
DOI:10.1080/15376516.2022.2159903
摘要
In this work, a microfluidic lung chip with membrane supporting cell growth that can produce multiple concentration gradients of gas and liquid is introduced. The chip is composed of a gas gradient layer in the upper part, a porous membrane supporting cell growth in the middle and a liquid gradient layer in the lower part. The gas-liquid interface environment of the cells on the membrane can expose the cells to the gas in the upper layer and the liquid in the lower layer at the same time. Then, the chip is applied to the toxicity testing of formaldehyde in A549 cells. The results showed that at 6 × 10-5 mol/L formaldehyde, the survival rate of the cells in four channels were 90, 87, 81, and 71%, which shows a dose-response trend under the influence of different concentrations of formaldehyde. ROS staining results also showed that formaldehyde exposure at 6 × 10-5 mol/L lead to the increase of ROS level in the cells. These results suggest that the chip based on cell growth on membrane could be used for toxicological evaluation of environmental polluting gases.
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