母体炎性暴露对子代小鼠受IRBP抗原诱导的EAU影响
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1.重庆医科大学实验动物中心;2.中国人民解放军陆军特色医学中心病理科;3.重庆医科大学附属儿童医院儿研所,国家儿童健康与疾病临床医学研究中心,儿童发育疾病研究教育部重点实验室

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] 国家自然科学(81670843),重庆医科大学未来医学青年创新团队发展支持计划(W0164)。


The impact of embryonic uveitis exposure on the offspring mice response to IRBP-induced experimental autoimmune uveitis (EAU)
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1.Laboratory Animal Center, Chongqing Medical University;2.Department of Pathology, Daping Hospital, Army Medical University;3.Pediatric Research Institute, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics

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Funded by the National Natural Science Foundation Project (81670843), CQMU Program for Youth Innovation in Future Medicine (W0164).

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    摘要:

    目的 探讨母体葡萄膜炎暴露对子代小鼠受视网膜抗原IRBP(interphotoreceptor retinoid-binging protein,IRBP)诱导的实验性自身免疫性葡萄膜炎(experimental autoimmune uveitis,EAU)免疫效应的影响。 方法 从我们课题组前期获得的受双亲EAU暴露的子代C57BL/6J小鼠眼球中的RNA测序转录组数据中,筛选免疫相关差异表达基因(differentially expressed genes,DEGs)。利用基因本体论(gene ontology,GO)和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)的富集分析,确定这些免疫相关的差异表达基因生物学途径。通过蛋白质互作网络(protein-protein interaction networks,PPI)分析交集基因以此鉴定出枢纽基因。荧光定量聚合酶链反应(quantitative real-time PCR,q-PCR)进一步确定筛选出的异常表达的枢钮基因是否也在受母本葡萄膜炎影响的子代小鼠中差异表达,最后通过视网膜抗原IRBP651-670诱导受母本活动期炎症影响的子代以评价母体葡萄膜炎对子代患葡萄膜炎的易感性以及相关免疫免疫效应的影响。 结果 从受双亲葡萄膜炎影响的子小鼠眼球组织中鉴定出72个免疫相关差异基因。这些基因主要富集参与Toll样受体信号通路、MAPK信号通路以及B细胞受体信号通路等。进一步PPI网络互作分析,筛选出proteasome 26S subunit, ATPase 5(Psmc5)、proteasome 26S subunit, ATPase 3(Psmc3)、proteasome 26S subunit ubiquitin receptor, non-ATPase 4(Psmd4)和proteasome 26S subunit, non-ATPase 8(Psmd8)四个枢纽基因。q-PCR检测证实受母本葡萄膜炎影响的子代小鼠中也上调表达这4个枢纽基因。而且与正常子代相比,150 μg IRBP抗原诱导可增加受活动期炎症影响的子代EAU临床表现的严重程度和病理组织学损伤(P = 0.0087;P = 0.0410);另外,受母体活动期炎性影响的子代在IRBP诱导的EAU中脾脏T细胞增殖功能增强,其血清中产生更高的炎性细胞因子IL-17和IL-6(P = 0.0450;P = 0.0300)。 结论 母体活动性炎症暴露加剧子代小鼠受IRBP诱导的EAU疾病的严重性,增强抗原特异性T细胞增殖以及血清中IL-17、IL-6的产生,可能与受影响的子代上调表达的4个枢钮基因Psmc5、Psmc3、Psmd4、Psmd8相关。

    Abstract:

    Objective To investigate the effect of embryonic inflammatory exposure on the offspring response to IRBP-induced experimental autoimmune uveitis (EAU). Methods RNA transcriptome sequencing data from eyeball in the C57BL/6J offspring gestated from active parental EAU were used to screen immune-associated differentially expressed genes (DEGs) in the eyes of exposed offspring. Gene fragments overlapping in the two datasets were screened using gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analyses to identify biological pathways associated with gene fragments. Hub genes were identified from these intersecting genes by protein-protein interaction networks (PPI) analysis. EAU models of offspring affected by maternal uveitis were established by immunization with IRBP651-670, and the expression levels of the pivotal genes in the offspring exposed to inflammation by maternal uveitis were examined by fluorescence quantitative polymerase chain reaction (q-PCR). The EAU severity, T lymphocytes proliferation and serum cytokines were detected to investigate the immune effect of offspring gestated from materinal active inflammation response to 150 μg IRBP induction. Results Microarray analysis identified 72 immune-related genes in ocular tissue DEGs compared with control samples. These genes were mainly enriched in pathways involved in Toll-like receptor signaling pathway, MAPK signaling pathway, and B cell receptor signaling pathway. Further PPI network interaction analysis screen out four hub genes, namely, Psmc5, Psmc3, Psmd4, and Psmd8. Meanwhile the adult offspring gestation from materinal active uveitis expressed increased mRNA level in those four hub genes compared with those healthy offspring. In addition, under 150 μg IRBP induction, an increase in the severity of EAU in the offspring during the inflammatory activity period was observed, with significant differences in clinical and pathological aspects compared with the control group. Meanwhile, the proliferation of T cells in the offspring during the inflammatory activity stage was enhanced, and the secretion of inflammatory cytokines IL-17 and IL-6 was increased. Conclusions Psmc5, Psmc3, Psmd4, and Psmd8 may be the important genes exacerbating offspring uveitis associated with the increased T cell proliferation and production of IL-17 and IL-6.

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  • 收稿日期:2023-11-28
  • 最后修改日期:2024-02-20
  • 录用日期:2024-03-14
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