Microarray profiling and functional analysis of differentially expressed plasma exosomal circular RNAs in Graves’ disease

Biological research: BR

article

Sun, Ying¹  Zhou, Jin¹  Wang, Wei¹  Tang, Yuxiao¹  Wang, Daping¹  Li, Liang²  Na, Min³  Jiang, Guantong⁴  Li, Qian⁵  Chen, Shulin¹ 

[1]Department of Endocrinology, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College

[2]Department of Neurosurgery, Affiliated Zhongshan Hospital of Dalian University

[3]Department of Radiology, Dalian Sixth People’s Hospital

[4]Department of Endocrinology and Metabolism, Binzhou Medical University Hospital

[5]Department of Scientific Research, Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College

关键词: Circular RNA;    Graves’ disease;    Exosomes;    hsa_circRNA_000102;    Immune activation;   

DOI  :  10.1186/s40659-020-00299-y

来源: BioMed Central

【 摘 要 】

Circulating RNA (circRNA) regulates various bioactivities in cells. A better understanding of the exosomal circRNA can provide novel insights into the pathogenesis and treatment of Graves’ disease (GD). We aimed to profile the differentially expressed circRNAs (DEcRs) in plasma exosomes of patients with GD and speculate and probe the functions of the DEcR by comprehensive bioinformatics analyses. Serum exosomes were isolated from five primary GD patients and five healthy controls via ultracentrifugation. After verification with transmission electron microscopy, exosome samples were subjected to microarray profiling using human circRNA microarrays. Two up-regulated and two down-regulated DEcRs were selected for validation in plasma exosomes from 20 GD and 20 healthy control participants using reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR). The circRNA/microRNA/mRNA interaction network was then assembled and the analysis of the Gene Ontology and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways was utilized to predict the potential functions of the DEcR associated genes. There were 15 DEcRs revealed in primary GD cases. The intronic circRNA hsa_circRNA_000102 was confirmed as an up-regulated component in plasma exosomes from patients with GD. The circRNA/microRNA/mRNA interaction network unveiled the most potential targeting microRNAs of hsa_circRNA_000102 and its associated genes. The functional analyses predicted involvement of hsa_circRNA_000102 associated genes in pathways of immune system activation, such as viral infection and interferon-beta signaling. hsa_circRNA_000102 is a differentially up-regulated plasma exosomal circRNA in patients with GD. Our study highlights multiple pathways, particularly virus infection and interferon-beta signaling, for mediating immune activation in Graves’ disease.

【 授权许可】

Unknown