IMR Press / FBL / Volume 24 / Issue 4 / DOI: 10.2741/4751

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article
A guinea pig IFNA1 gene with antiviral activity against human influenza virus infection
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1 Laboratory of Microbiology and Cell Biology, Department of Pharmacy, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan
*Correspondence: kimurato@ph.ritsumei.ac.jp (Tominori Kimura)
Front. Biosci. (Landmark Ed) 2019, 24(4), 790–797; https://doi.org/10.2741/4751
Published: 1 March 2019
(This article belongs to the Special Issue Regulatory long non-coding RNA)
Abstract

We previously reported a natural antisense (AS) RNA as an important modulator of human interferon-Alpha1 (IFNA1) mRNA levels. Here, we identified the guinea pig (Cavia porcellus) IFNA1 gene to enable a proof-of-concept experiment to be performed to confirm that the AS-mRNA regulatory axis exerts in vivo control over innate immunity. We selected a guinea pig model system for influenza virus infection because guinea pigs encode a functional M × 1 gene, an important anti-viral effector in the type I interferon pathway. We identified 15 guinea pig IFNA1 gene candidates upon bioinformatic analysis and selected the three candidates with the highest sequence homology to Homo sapiens, Mus musculus and Marmota himalayana IFNA1. The anti-viral activity of guinea pig IFN-Alpha1 protein against influenza virus A/Puerto Rico/8/34- or endomyocarditis virus-infection was then determined for the three gene candidates. We identified cpIFNA1 as the candidate with the highest sequence homologies and best anti-viral effects. cpIFNA1 will enable us to perform a proof-of-concept experiment to verify that IFN-Alpha1 AS increases cpIFNA1 mRNA levels, resulting in inhibition of influenza virus proliferation in vivo.

Keywords
Proof-of-concept
Animal model
Guinea pig
IFNA1 gene
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