Zou Yang, Zheng Wen-Bin, He Jun-Jun, Elsheikha Hany M, Zhu Xing-Quan, Lu Yi-Xin
Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.
State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.
Front Vet Sci. 2020 Nov 12;7:587273. doi: 10.3389/fvets.2020.587273. eCollection 2020.
is a neglected zoonotic parasite, which threatens the health of dogs and humans worldwide. The molecular mechanisms that underlie the progression of infection remain mostly unknown. MicroRNAs (miRNAs) are small non-coding RNAs that have been identified in ; however, the regulation and role of miRNAs in the host during infection remain incompletely understood. In this study, we determined hepatic miRNA expression at different stages of infection in beagle dogs. Individual dogs were infected by 300 embryonated eggs, and their livers were collected at 12 hpi (hours post-infection), 24 hpi, and 36 dpi (days post-infection). The expression profiles of liver miRNAs were determined using RNA-sequencing. Compared to the control groups, 9, 16, and 34 differentially expressed miRNAs (DEmiRNAs) were detected in the livers of infected dogs at the three infection stages, respectively. Among those DEmiRNAs, the novel-294 and cfa-miR-885 were predicted to regulate inflammation-related genes at the initial stage of infection (12 hpi). The cfa-miR-1839 was predicted to regulate the target gene TRIM71, which may influence the development of larvae at 24 hpi. Moreover, cfa-miR-370 and cfa-miR-133c were associated with immune response at the final stage of infection (36 dpi). Some immunity-related Gene Ontology terms were enriched particularly at 24 hpi. Likewise, Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that many significantly enriched pathways were involved in inflammation and immune responses. The expression level of nine DEmiRNAs was validated using quantitative real-time PCR (qRT-PCR). These results show that miRNAs play critical roles in the pathogenesis of during the hepatic phase of parasite development. Our data provide fundamental information for further investigation of the roles of miRNAs in the innate/adaptive immune response of dogs infected by .
是一种被忽视的人畜共患寄生虫,威胁着全球犬类和人类的健康。感染进展背后的分子机制大多仍不为人知。微小RNA(miRNA)是在[具体内容缺失]中已被鉴定出的小非编码RNA;然而,miRNA在感染期间宿主中的调控和作用仍未完全了解。在本研究中,我们测定了比格犬感染[寄生虫名称缺失]不同阶段的肝脏miRNA表达。每只犬感染300个受精[寄生虫卵名称缺失]卵,并在感染后12小时(hpi)、24 hpi和感染后36天(dpi)采集其肝脏。使用RNA测序确定肝脏miRNA的表达谱。与对照组相比,在三个感染阶段感染犬的肝脏中分别检测到9个、16个和34个差异表达的miRNA(DEmiRNA)。在这些DEmiRNA中,预测novel - 294和cfa - miR - 885在感染初期(12 hpi)调控炎症相关基因。预测cfa - miR - 1839调控靶基因TRIM71,这可能在24 hpi影响[寄生虫幼虫名称缺失]幼虫的发育。此外,cfa - miR - 370和cfa - miR - 133c在感染后期(36 dpi)与免疫反应相关。一些免疫相关的基因本体术语在24 hpi时尤其富集。同样,京都基因与基因组百科全书通路分析表明,许多显著富集的通路参与炎症和免疫反应。使用定量实时PCR(qRT - PCR)验证了9个DEmiRNA的表达水平。这些结果表明,miRNA在寄生虫发育肝脏阶段的发病机制中起关键作用。我们的数据为进一步研究miRNA在感染[寄生虫名称缺失]的犬的固有/适应性免疫反应中的作用提供了基础信息。