Journal
ANTIVIRAL RESEARCH
Volume 110, Issue -, Pages 60-69Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.antiviral.2014.07.011
Keywords
PRRSV; HO-1; Antivirus factor; siRNA; Highly pathogenic PRRSV
Categories
Funding
- National Natural Science Foundation of China [31101690, 31302060]
- National High-tech R&D Program of China [2011AA10A208]
- Natural Science Basic Research Plan in Shaanxi Province of China [2014JQ3088]
- Northwest AF University [Z111021201]
- [QN2013028]
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Virus replication depends upon host-cell processes in infected cells, and this is true for porcine reproductive and respiratory syndrome virus (PRRSV), the causative agent of PRRS that is a worldwide threat to the swine industry. Heme oxygenase-1 (HO-1) is a ubiquitously expressed inducible isoform of the first and rate-limiting enzyme for heme degradation. Our previous research suggested that HO-1 may play an important role in PRRSV infection. However, the function of HO-1 in PRRSV infection is unclear. In the present study, Marc-145, PK-15(CD163) cell lines and porcine alveolar macrophages (PAMs) were used to evaluate the effects of HO-1 induction and over-expression on the replication of two different PRRSV strains. Induction of HO-1 markedly decreased the replication of PRRSV strains in the different cells. Similarly, adenoviral-mediated over-expression of HO-1 also greatly decreased the replication of PRRSV. In contrast, ablation of HO-1 using small interfering RNA concomitantly increased PRRSV replication. Therefore, the data were consistent with HO-1 acting as an antiviral factor and these findings suggested that over-expression or induction of HO-1 may provide a potential therapeutic strategy against PRRSV infection. (C) 2014 Elsevier B.V. All rights reserved.
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