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Changes in MicroRNA Expression during Rabbit Hemorrhagic Disease Virus (RHDV) Infection.

Hukowska-Szematowicz, Beata and Maciejak-Jastrzębska, Agata and Blatkiewicz, Małgorzata and Maciak, Karolina and Gora, Monika and Janiszewska, Joanna and Burzynska, Beata (2020) Changes in MicroRNA Expression during Rabbit Hemorrhagic Disease Virus (RHDV) Infection. Viruses, 12 (9).

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Official URL: https://www.mdpi.com/1999-4915/12/9/965


Current knowledge on the role of microRNAs (miRNAs) in rabbit hemorrhagic disease virus (RHDV) infection and the pathogenesis of rabbit hemorrhagic disease (RHD) is still limited. RHDV replicates in the liver, causing hepatic necrosis and liver failure. MiRNAs are a class of short RNA molecules, and their expression profiles vary over the course of diseases, both in the tissue environment and in the bloodstream. This paper evaluates the expression of miRNAs in the liver tissue (ocu-miR-122-5p, ocu-miR-155-5p, and ocu-miR-16b-5p) and serum (ocu-miR-122-5p) of rabbits experimentally infected with RHDV. The expression levels of ocu-miR-122-5p, ocu-miR-155-5p, and ocu-miR-16b-5p in liver tissue were determined using reverse transcription quantitative real-time PCR (RT-qPCR), and the expression level of circulating ocu-miR-122-5p was established using droplet digital PCR (ddPCR). The expression levels of ocu-miR-155-5p and ocu-miR-16b-5p were significantly higher in the infected rabbits compared to the healthy rabbits (a fold-change of 5.8 and 2.5, respectively). The expression of ocu-miR-122-5p was not significantly di�erent in the liver tissue from the infected rabbits compared to the healthy rabbits (p = 0.990), while the absolute expression level of the circulating ocu-miR-122-5p was significantly higher in the infected rabbits than in the healthy rabbits (p < 0.0001). Furthermore, a functional analysis showed that ocu-miR-155-5p, ocu-miR-16b-5p, and ocu-miR-122-5p can regulate the expression of genes involved in processes correlated with acute liver failure (ALF) in rabbits. Search tool for the retrieval of interacting genes/proteins (STRING) analysis showed that the potential target genes of the three selected miRNAs may interact with each other in di�erent pathways. The results indicate the roles of these miRNAs in RHDV infection and over the course of RHD and may reflect hepatic inflammation and impairment/dysfunction in RHD.

Item Type:Article
Subjects:Q Science > QR Microbiology > QR355 Virology
Divisions:Department of Genetics
ID Code:1919
Deposited By: dr Monika Góra
Deposited On:07 Sep 2020 08:14
Last Modified:07 Sep 2020 08:14

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