Conventional dendritic cells 2, the targeted antigen-presenting-cell, induces enhanced type 1 immune responses in mice immunized with CVC1302 in oil formulation
文献类型： 外文期刊
第一作者： Du, Luping
作者： Du, Luping;Lu, Haiyan;Qiao, Xuwen;Zhang, Yuanpeng;Hou, Liting;Yu, Xiaoming;Cheng, Haiwei;Chen, Jin;Zheng, Qisheng;Hou, Jibo;Du, Luping;Lu, Haiyan;Qiao, Xuwen;Zhang, Yuanpeng;Hou, Liting;Yu, Xiaoming;Cheng, Haiwei;Chen, Jin;Zheng, Qisheng;Hou, Jibo;Du, Luping;Lu, Haiyan;Qiao, Xuwen;Zhang, Yuanpeng;Hou, Liting;Yu, Xiaoming;Cheng, Haiwei;Chen, Jin;Zheng, Qisheng;Hou, Jibo;Tong, Guangzhi;Lu, Haiyan;Chen, Jin;Zheng, Qisheng
作者机构：
关键词： CVC1302; Oil formulation; Interfollicular region; Inflammatory niche; Th1 cells
期刊名称：IMMUNOLOGY LETTERS （ 影响因子：4.4； 五年影响因子：4.0 ）
ISSN： 0165-2478
年卷期： 2024 年 267 卷
页码：
收录情况： SCI
摘要： Multifunctional CD4+ T helper 1 (Th1) cells, producing IFN-gamma, TNF-alpha and IL-2, define a correlate of vaccinemediated protection against intracellular infection. In our previous study, we found that CVC1302 in oil formulation promoted the differentiation of IFN-gamma+/TNF-alpha+/IL-2+Th1 cells. In order to extend the application of CVC1302 in oil formulation, this study aimed to elucidate the mechanism of action in improving the Th1 immune response. Considering the signals required for the differentiation of CD4+ T cells to Th1 cells, we detected the distribution of innate immune cells and the model antigen OVA-FITC in lymph node (LN), as well as the quantity of cytokines produced by the innate immune cells. The results of these experiments show that, cDC2 and OVAFITC localized to interfollicular region (IFR) of the draining lymph nodes, inflammatory monocytes localized to both IFR and T cell zone, which mainly infiltrate from the blood. In this inflammatory niche within LN, CD4+ T cells were attracted into IFR by CXCL10, secreted by inflammatory monocytes, then activated by cDC2, secreting IL-12. Above all, CVC1302 in oil formulation, on the one hand, targeted antigen and inflammatory monocytes into the LN IFR in order to attract CD4+ T cells, on the other hand, targeted cDC2 to produce IL-12 in order to promote optimal Th1 differentiation. The new finding will provide a blueprint for application of immunopotentiators in optimal formulations.
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