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. 2021 Oct 14;9:723801. doi: 10.3389/fcell.2021.723801

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Copyright © 2021 Ma, Fu, Liu, Liu, Feng, Jiang, Liu, Liu, Liang, Li, Tian, Hu, Bai, Liang and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Superoxide dismutase (SOD2) decreased autophagy and cell death after radiation treatment. Cells were transfected with control vector (Vector) and SOD2 overexpression plasmid (SOD) for 24 h, the SOD2 expression was tested by Western blot (A). Intracellular ROS (B) autophagic rate (C) and the amount of cell death (D) were determined at 48 h after radiation treatment. Cells were transfected with control vector (pSUPER) and siRNA against SOD2 (SOD2 Ri) for 48 h, the SOD2 expression was tested by Western blot (E). Intracellular ROS (F), autophagic rate (G), and the amount of cell death (H) were determined at 48 h after radiation treatment. These results were representative of three independent experiments and expressed as means ± SD. P-values were calculated using repeated measure ANOVA with P < 0.05 being considered as statistical significance, *P < 0.05.