Abstract
ZNF580, a newly found C2H2 zinc finger transcription factor, was first described by Zhang (GenBank ID: AF184939). Emerging evidence has suggested that reactive oxygen species (ROS) play an important role in redox-sensitive signal transduction, and the vascular endothelium plays a critical role in the vascular inflammatory response. In this communication, we present evidence for the potential role of ZNF580 in hydrogen peroxide (H2O2)-regulated inflammation-related signaling pathways. In a human endothelial cell hybridoma line (EA.hy926), ZNF580 levels were markedly upregulated with H2O2 stimulation in different concentrations (0–400 μM) and at different time-points (0–6 h). H2O2 promoted the rapid translocation of p65 from the cytoplasm into the nucleus according to immunocytochemistry staining. In subsequent research, inhibition of NF-κB by pyrrolidine dithiocarbamate (PDTC, a selective chemical inhibitor of NF-κB) was shown to block the upregulated expression of ZNF580 that was induced by H2O2. Furthermore, transient transfection of ZNF580 resulted in an increase of the pro-inflammatory cytokine interleukin-8 (IL-8) 3.01 ± 0.05 folds according to real-time RT-PCR and ELISA assays, which also showed significantly enhanced motility of human acute monocytic leukemia cells (THP-1). These results suggest that H2O2 upregulates the expression of ZNF580 via the NF-κB signaling pathway, and overexpression of ZNF580 plays a critical role in augmenting the release of pro-inflammatory cytokine IL-8.
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Acknowledgments
We are grateful to our colleagues in the Department of Physiology and Pathophysiology, Medical College of the Chinese People’s Armed Police Force (CAPF), for their excellent technical assistance and encouragement. This project was supported by grants from the Chinese National Natural Science Foundation (No. 30770885) and Tianjin Natural Science Foundation (No. 10JCYBJC26500) and the Science Foundation of CPAF Medical College (No. WYZ2007-2).
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Ren DangLi and Wang HeKong contributed equally to this work.
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DangLi, R., HeKong, W., JiQin, L. et al. ROS-induced ZNF580 expression: a key role for H2O2/NF-κB signaling pathway in vascular endothelial inflammation. Mol Cell Biochem 359, 183–191 (2012). https://doi.org/10.1007/s11010-011-1013-0
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DOI: https://doi.org/10.1007/s11010-011-1013-0