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Identification of miR-221 and -222 as important regulators in genotype IV swine hepatitis E virus ORF3-expressing HEK 293 cells.

Abstract：

:Hepatitis E virus (HEV) has emerged as an important cause of epidemic and sporadic acute viral hepatitis worldwide, which is a major public health challenge. A better understanding of the interaction between the virus and the host cell would be very helpful for its therapy. Swine HEV (SHEV) open reading frame 3 (ORF3) is a regulatory protein that alters the activity of selected transcription factors and cytoplasmic signaling pathways. MicroRNAs (miRNAs) are potent post-transcriptional regulators of protein-coding genes and represent an interesting lead to study SHEV infection and to identify new therapeutic targets. To explore how SHEV ORF3 affects miRNAs in host cells, we used miRNA array analysis to compare the expression patterns of miRNAs in stable cell lines that expressed or did not express SHEV ORF3. We found a significant down-regulation of miR-221 and -222 in ORF3 expressing human embryonic kidney 293 cell line. Among the 116 candidate targets genes of miR-221 and -222 that we detected in silico, we demonstrated that the expression of the cyclin-dependent kinase inhibitor 1B, also named p27(kip1), was directly regulated by these miRNAs. We hypothesize that SHEV ORF3-induced miR-221/222 downregulation enhances p27(kip1) expression in HEK293 cells. This provides new avenues for future exploration of the precise roles of miRNAs in SHEV infection.

journal_name

Virus Genes

journal_title

Virus genes

authors

Cheng Y,Du L,Shi Q,Jiao H,Zhang X,Hao Y,Rong H,Zhang J,Jia X,Guo S,Kuang W,Zhang H,Chen C,Wang F

doi

10.1007/s11262-013-0912-4

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

49-55

issue

1

eissn

0920-8569

issn

1572-994X

journal_volume

47

pub_type

杂志文章

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