Abstract
Vascular smooth muscle cells (VSMCs) are one of the sources of foam cells in atherosclerosis. However, the mechanism of VSMC-derived foam cell formation remain largely unknown. Bisdemethoxycurcumin (BDMC) is considered to possess diverse pharmacological properties, including anti-inflammation and anti-oxidation. However, the effects of BDMC on atherosclerosis remain unclear. Here, we established an in vitro foam cell model by culturing VSMCs with oxidized low-density lipoprotein (ox-LDL). The results show that BDMC reduced lipid droplets in ox-LDL-stimulated VSMCs. In addition, BDMC promotes autophagy by suppressing PDK1/Akt/mTOR signaling pathway. In vivo, BDMC alleviates inflammatory responses and lipid accumulation in in apoe−/− mice. Above all, the results from the present study suggested that BDMC may be used as a therapeutic agent for the prevention and treatment of atherosclerosis.
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This work has been supported by Regional Science Foundation of the National Natural Science Foundation of China (No.81960091).
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XQ conceived the idea of this article and supervised the research. JZ and SG performed the research, analyzed the data and wrote the manuscript. All authors have read and approved the final version of the manuscript. The authors declare that all data were generated in-house and that no paper mill was used.
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All animal experimental procedures in this study were conducted following the guidelines of Animal Care and Ethics Committee of Guangxi Medical University (approval no. SYXKGUI 2021–0015).
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Zuo, J., Guo, S. & Qin, X. Bisdemethoxycurcumin suppresses the progression of atherosclerosis and VSMC-derived foam cell formation by promoting lipophagy. Naunyn-Schmiedeberg's Arch Pharmacol 396, 3659–3670 (2023). https://doi.org/10.1007/s00210-023-02558-7
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DOI: https://doi.org/10.1007/s00210-023-02558-7