首页> 外文期刊>Immunology: An Official Journal of the British Society for Immunology >Protection against Paracoccidioides brasiliensis infection in mice treated with modulated dendritic cells relies on inhibition of interleukin-10 production by CD8(+) T cells
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Protection against Paracoccidioides brasiliensis infection in mice treated with modulated dendritic cells relies on inhibition of interleukin-10 production by CD8(+) T cells

机译:调制树突状细胞治疗小鼠对巴西副球菌的预防依赖于CD8(+)T细胞抑制白介素10的产生。

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摘要

Paracoccidioidomycosis is a systemic infection prevalent in Latin American countries. Disease develops after inhalation of Paracoccidioides brasiliensis conidia followed by an improper immune activation by the host leucocytes. Dendritic cells (DCs) are antigen-presenting cells with the unique ability to direct the adaptive immune response by the time of activation of naive T cells. This study was conducted to test whether extracts of P. brasiliensis would induce maturation of DCs. We found that DCs treated with extracts acquired an inflammatory phenotype and upon adoptive transfer conferred protection to infection. Interestingly, interleukin-10 production by CD8(+) T cells was ablated following DC transfer. Further analyses showed that lymphocytes from infected mice were high producers of interleukin-10, with CD8(+) T cells being the main source. Blockage of cross-presentation to CD8(+) T cells by modulated DCs abolished the protective effect of adoptive transfer. Collectively, our data show that adoptive transfer of P. brasiliensis-modulated DCs is an interesting approach for the control of infection in paracoccidioidomycosis.
机译:副球菌病是拉丁美洲国家中普遍存在的系统性感染。吸入巴西副球菌分生孢子后,宿主白细胞免疫激活不当,会导致疾病发展。树突状细胞(DC)是抗原呈递细胞,具有通过激活天然T细胞的时间来指导适应性免疫应答的独特能力。进行该研究以测试巴西假单胞菌的提取物是否会诱导DC的成熟。我们发现用提取物处理的DC获得了炎性表型,过继转移后赋予了对感染的保护。有趣的是,DC转移后,由CD8(+)T细胞产生的白细胞介素10产生被消除。进一步的分析表明,感染小鼠的淋巴细胞是白细胞介素10的高产者,其中CD8(+)T细胞是主要来源。通过调制DC的交叉呈现CD8(+)T细胞的封锁取消了过继转移的保护作用。总体而言,我们的数据表明,巴西假单胞菌调节的DC的过继转移是控制副球孢子菌病感染的有趣方法。

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