Abstract
The importance of the interaction between natural killer (NK) cells and dendritic cells (DCs) in the expansion of antiviral and antitumor immune responses is well documented; however, limited information on NK/DC interaction during atherosclerosis is available. Inflammation plays an important role in the development of atherosclerosis, and oxidized low-density lipoprotein (ox-LDL) is believed to play a critical role in the development and progression of atherosclerosis. In this study, we developed a NK/DC coculture system to examine the role of ox-LDL in modulating the interaction of mice NK cells and DCs. Fresh NK cells were cocultured with DCs in the absence or presence of ox-LDL. We examined the cytokines released during the interaction. This report provides the first evidence of an enhancement effect by ox-LDL on the NK/DC crosstalk. Notably, we found that ox-LDL significantly promoted the interaction of NK cells and DCs via CD48-2B4 contact-dependent mechanisms. These findings highlight the importance of NK/DCs crosstalk in atherosclerosis and provide new information about the possible mechanisms of atherosclerosis.
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The project was supported by the Health Bureau of Zhejiang Province, China (grant no. 2008A075).
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Dong, K., Ge, JH., Gu, SL. et al. Ox-LDL can enhance the interaction of mice natural killer cells and dendritic cells via the CD48-2B4 pathway. Heart Vessels 26, 637–645 (2011). https://doi.org/10.1007/s00380-010-0102-4
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DOI: https://doi.org/10.1007/s00380-010-0102-4