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感染早期宿主 T 细胞中动态 miRNA 谱。

Dynamic miRNA profile of host T cells during early hepatic stages of infection.

机构信息

Shanghai Tenth People's Hospital, Institute for Infectious Diseases and Vaccine Development, Tongji University School of Medicine, Shanghai, China.

Key Laboratory of Animal Parasitology of Ministry of Agriculture and Rural Affairs, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.

出版信息

Front Immunol. 2022 Sep 2;13:911139. doi: 10.3389/fimmu.2022.911139. eCollection 2022.

Abstract

Schistosomes undergo complicated migration in final hosts during infection, associated with differential immune responses. It has been shown that CD4 T cells play critical roles in response to infections and accumulated documents have indicated that miRNAs tightly regulate T cell activity. However, miRNA profiles in host T cells associated with infection remain poorly characterized. Therefore, we undertook the study and systematically characterized T cell miRNA profiles from the livers and blood of infected C57BL/6J mice at 14- and 21-days post-infection. We observed 508 and 504 miRNAs, in which 264 miRNAs were co-detected in T cells isolated from blood and livers, respectively. The comparative analysis of T cell miRNAs from uninfected and infected C57BL/6J mice blood showed that expression was significantly downregulated and linked to various T cell immune responses and was highly upregulated, associated with Wnt signaling and pluripotency, Delta notch signaling pathways, Whereas hepatic T cells showed , , , and were differentially expressed compared to the uninfected control. The different expressions of some miRNAs were further corroborated in isolated T cells from mice and cultured EL-4 cells treated with worm antigens by RT-qPCR and similar results were found. In addition, bioinformatics analysis combined with RT-qPCR validation of selected targets associated with the immune system and parasite-caused infectious disease showed a significant increase in the expression of , , , and and a decreased expression of , , , , , , , , , , and . Overall, these results unveil the comprehensive repertoire of T cell miRNAs during infection, suggesting that the circulatory (blood) and liver systems have distinct miRNAs landscapes that may be important for regulating T cell immune response. Altogether, our findings indicated a dynamic expression pattern of T cell miRNAs during the hepatic stages of infection.

摘要

曼氏血吸虫在感染过程中经历复杂的迁移,与不同的免疫反应有关。已经表明 CD4 T 细胞在 感染反应中发挥关键作用,并且积累的文献表明 miRNA 严格调节 T 细胞活性。然而,与 感染相关的宿主 T 细胞中的 miRNA 谱仍未得到很好的描述。因此,我们进行了这项研究,系统地描述了感染后 14 天和 21 天的 C57BL/6J 小鼠肝脏和血液中的 T 细胞中的 miRNA 谱。我们观察到 508 种和 504 种 miRNA,其中 264 种 miRNA 分别在血液和肝脏分离的 T 细胞中共同检测到。比较未感染和感染的 C57BL/6J 小鼠血液中的 T 细胞 miRNA 分析表明, 表达显著下调,与各种 T 细胞免疫反应相关, 高度上调,与 Wnt 信号通路和多能性、Delta-notch 信号通路相关, 而与未感染对照组相比,肝脏 T 细胞表现出 、 、 、 差异表达。一些 miRNA 的不同表达通过 RT-qPCR 在从感染和未感染的 C57BL/6J 小鼠分离的 T 细胞和用 虫抗原处理的 EL-4 细胞中进一步证实,发现了相似的结果。此外,生物信息学分析与 RT-qPCR 验证与免疫系统和寄生虫引起的传染病相关的选定靶标表明, 、 、 、 、 、 、 、 、 、 和 的表达显著增加, 、 、 、 、 、 、 、 、 和 的表达降低。总的来说,这些结果揭示了 感染过程中 T 细胞 miRNA 的全面特征,表明循环(血液)和肝脏系统具有不同的 miRNA 图谱,可能对调节 T 细胞免疫反应很重要。总之,我们的研究结果表明在 感染的肝期 T 细胞 miRNA 表现出动态表达模式。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b0a/9478579/025a848b90c1/fimmu-13-911139-g001.jpg

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