Abstract
The activation of NLR family pyrin domain containing 3 (NLRP3) inflammasome have been implicated in the initiation or progression of atherosclerosis. Recent research showed that irisin, a newly discovered adipomiokine, alleviates endothelial dysfunction in type 2 diabetes partially via reducing oxidative/nitrative stresses, suggesting that irisin may be a promising candidate for the treatment of vascular complications of diabetes. However, the association between irisin and NLRP3 inflammasome in the pathogenesis of atherosclerosis remains unclear. In the present study, we cultured human umbilical vein endothelial cells (HUVECs) in advanced glycation end products (AGEs) medium; exogenous irisin (0.01, 0.1, 1 μg/ml) were used as an intervention reagent. siRNA and adenoviral vector were constructed to realize silencing and over-expression of NLRP3 gene. Our data showed that irisin significantly reversed AGEs-induced oxidative stress and NLRP3 inflammasome signaling activation (p < 0.05), and increased the endothelial nitric oxide synthase (eNOS) and nitric oxide (NO) production in a dose-dependent manner (p < 0.05). siRNA-mediated knockdown NLRP3 facilitated the irisin-mediated anti-inflammatory and antiatherogenic effects (p < 0.05). However, these irisin-mediated effects were reversed by over-expression NLRP3 (p < 0.05). Taken together, our results reveal that irisin alleviates AGEs-induced inflammation and endothelial dysfunction via inhibiting ROS-NLRP3 inflammasome signaling, suggest a likely mechanism for irisin-induced therapeutic effect in vascular complications of diabetes.
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Acknowledgements
We would like to thank the Center of Peripheral Vascular Surgery (Affiliated Hospital of Southwest Medical University).
Funding
This work was supported by the Office of Science Technology and Intellectual Property of Luzhou (No. 14141) and the Program of the Affiliated Hospital of Southwest Medical University (No. 14070).
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Wei Huang is co-first author.
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Deng, X., Huang, W., Peng, J. et al. Irisin Alleviates Advanced Glycation End Products-Induced Inflammation and Endothelial Dysfunction via Inhibiting ROS-NLRP3 Inflammasome Signaling. Inflammation 41, 260–275 (2018). https://doi.org/10.1007/s10753-017-0685-3
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DOI: https://doi.org/10.1007/s10753-017-0685-3