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  • IFN Regulatory Factor-1 Modulates the Function of Dendritic Cells in Patients with Acute Coronary Syndrome.

IFN Regulatory Factor-1 Modulates the Function of Dendritic Cells in Patients with Acute Coronary Syndrome.

Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology (2015-05-23)
Min Guo, Rui Yan, Caixia Wang, Hongtao Shi, Meng Sun, Shuang Guo, Chuanshi Xiao
ABSTRACT

Atherosclerosis is widely recognized as a complex inflammatory disease involving pathogenic immune response of T cells and antigen-presenting cells (APCs) such as dendritic cells (DCs) and macrophages. Accumulating evidence has revealed that mature DCs play critical roles in the differentiation of effector T cells into CD4+ T cells, which effectively participate in the onset of acute coronary syndrome (ACS). IFN regulatory factor (IRF)-1 has been shown to be involved in various immune processes. The role of IRF-1 in DCs in the pathogenesis of ACS has not been investigated. We examined the relative mRNA and protein expression of IRF-1 in human monocyte-derived DCs in patients with coronary artery disease (CAD). The overexpression or silencing of IRF-1 expression in DCs in patients with ACS was performed to explore the possible role of IRF-1 in the maturation and function of DCs involved in ACS. The results showed that the relative expression of IRF-1 in DCs is obviously increased in patients with ACS. The overexpression or silencing of IRF-1 expression could effectively promote or attenuate the maturation and function of DCs. In addition, we revealed that the MAPK pathway (phosphorylation of JNK, p38 and ERK1/2) might be downstream of IRF-1 signalling pathway in activation of circulating DCs in ACS patients. The present data demonstrate that IRF-1 could effectively promote the immune maturation and function of DCs in ACS patients.

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