期刊
ENVIRONMENTAL TOXICOLOGY
卷 37, 期 9, 页码 2269-2280出版社
WILEY
DOI: 10.1002/tox.23593
关键词
diabetic nephropathy; DNA damage response; glyoxal; network toxicology; oxidative stress
资金
- National Natural Science Foundation of China [32070017, 31770017, 32011530016]
- Project for Youth and Middleaged Science and Technology Innovative Talents of Shenyang City
- Program for Liaoning Innovative Talents in University [LD2020002]
- Scientific Research Fund of Liaoning Provincial Education Department [LJKZ0090]
- Natural Science Foundation of Liaoning Province [2021-MS-151]
Glyoxal exerts cytotoxicity on HEK293 cells through oxidative stress, AGEs-RAGE pathway, cellular inflammation, DNA damage, and mitochondrial apoptosis.
Glyoxal, a reactive carbonyl species, can be generated both endogenously (glucose metabolism) and exogenously (cigarette smoke and food system). Increasing evidence demonstrates that glyoxal exacerbates the development and progression of diabetic nephropathy, but the underlying mechanisms of glyoxal toxicity to human embryonic kidney (HEK293) cells remain unclear. In this work, the molecular mechanisms of glyoxal-induced cytotoxicity in HEK293 cells were explored with network toxicology and cell biology experiments. Network toxicology results showed that oxidative stress and advanced glycation end products (AGEs)/RAGE signaling pathways played a crucial role in glyoxal toxicity. Next, further validation was performed at the cellular level. Glyoxal activated the AGEs-RAGE signaling pathway, caused the increase of cellular ROS, and activated the p38MAPK and JNK signaling pathways, causing cellular oxidative stress. Furthermore, glyoxal caused the activation of the NF-kappa B signaling pathway and increased the expression of TGF-beta 1, indicating that glyoxal caused cellular inflammation. Moreover, glyoxal caused cellular DNA damage accompanied by the activation of DNA damage response pathways. Finally, the mitochondrial apoptosis pathway was activated. The results that obtained in cell biology were consistent with network toxicology, which corroborated each other and together indicated that glyoxal induced HEK293 cells damage via the process of oxidative stress, the AGEs-RAGE pathway, and their associated signaling pathways. This study provides the experimental basis for the cytotoxicity of glyoxal on HEK293 cells.
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