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KMID : 0624620230560020096
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BMB Reports
2023 Volume.56 No. 2 p.96 ~ p.101
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Particulate matter induces ferroptosis by accumulating iron and dysregulating the antioxidant system
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Park Min-Kyung
Cho Young-Lai
Choi Yu-Min
Min Jeong-Ki
Park Young-Jun
Yoon Sung-Jin
Kim Dae-Soo
Son Mi-Young
Chung Su-Wol
Lee Hee-Doo
Lee Seon-Jin
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Abstract
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Particulate matter is an air pollutant composed of various components, and has adverse effects on the human body. Particulate matter is known to induce cell death by generating an imbalance in the antioxidant system; however, the underlying mechanism has not been elucidated. In the present study, we demonstrated the cytotoxic effects of the size and composition of particulate matter on small intestine cells. We found that particulate matter 2.5 (PM2.5) with extraction ion (EI) components (PM2.5 EI), is more cytotoxic than PM containing only polycyclic aromatic hydrocarbons (PAHs). Additionally, PM-induced cell death is characteristic of ferroptosis, and includes iron accumulation, lipid peroxidation, and reactive oxygen species (ROS) generation. Furthermore, ferroptosis inhibitor as liproxstatin-1 and iron-chelator as deferiprone attenuated cell mortality, lipid peroxidation, iron accumulation, and ROS production after PM2.5 EI treatment in human small intestinal cells. These results suggest that PM2.5 EI may increase ferroptotic-cell death by iron accumulation and ROS generation, and offer a potential therapeutic clue for inflammatory bowel diseases in human small intestinal cells.
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KEYWORD
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Cell death, Ferroptosis, Iron accumulation, Particulate matter, ROS
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