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Inhibition of viral replication by small interfering RNA targeting of the foot-and-mouth disease virus receptor integrin β6

  • Authors:
    • Na‑Na Hu
    • Wenzhi Zhang
    • Lina Wang
    • Yuan‑Zhi Wang
    • Chuang‑Fu Chen

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  • Published online on: June 7, 2017     https://doi.org/10.3892/etm.2017.4560
  • Pages: 735-742
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Abstract

In animals, foot-and-mouth disease (FMD) causes symptoms such as fever, limping and the development of blister spots on the skin and mucous membranes. RNA interference (RNAi) may be a novel way of controlling the FMD virus (FMDV), specifically by targeting its cognate receptor protein integrin β6. The present study used RNAi technology to construct and screen plasmids that expressed small interfering RNA molecules (siRNAs) specific for the integrin β6 subunit. Expression of green fluorescence protein from the RNAi plasmids was observed following transfection into porcine embryonic fibroblast (PEF) cells, and RNAi plasmids were screened using reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) analysis. A fragment (5'AAA​GGC​CAA​GTG​GCA​AAC​GGG 3') with marked interference activity was ligated into a PXL‑EGFP‑NEO integration plasmid and transfected into PEF cells. Transfected cells were selected using G418, and interference of the integrated plasmid was subsequently evaluated by FMDV challenge experiments, in which the levels of viral replication were determined using optical microscopy and RT‑qPCR. A total of seven interference plasmids were successfully constructed, including the pGsi‑Z4 plasmid, which had a significant interference efficiency of 91.7% in PEF cells (**P<0.01). Upon transfection into PEF cells for 36 h, a Z4 integration plasmid exhibited significant inhibitory effects (**P<0.01) on the integrin β6 subunit. Subsequent challenge experiments in transfected PEF cells also demonstrated that viral replication was reduced by 24.2 and 12.8% after 24 and 36 h, respectively. These data indicate that RNAi technology may inhibit intracellular viral replication in PEF cells by reducing expression of the FMDV receptor integrin β6.
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July-2017
Volume 14 Issue 1

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Hu NN, Zhang W, Wang L, Wang YZ and Chen CF: Inhibition of viral replication by small interfering RNA targeting of the foot-and-mouth disease virus receptor integrin β6. Exp Ther Med 14: 735-742, 2017
APA
Hu, N., Zhang, W., Wang, L., Wang, Y., & Chen, C. (2017). Inhibition of viral replication by small interfering RNA targeting of the foot-and-mouth disease virus receptor integrin β6. Experimental and Therapeutic Medicine, 14, 735-742. https://doi.org/10.3892/etm.2017.4560
MLA
Hu, N., Zhang, W., Wang, L., Wang, Y., Chen, C."Inhibition of viral replication by small interfering RNA targeting of the foot-and-mouth disease virus receptor integrin β6". Experimental and Therapeutic Medicine 14.1 (2017): 735-742.
Chicago
Hu, N., Zhang, W., Wang, L., Wang, Y., Chen, C."Inhibition of viral replication by small interfering RNA targeting of the foot-and-mouth disease virus receptor integrin β6". Experimental and Therapeutic Medicine 14, no. 1 (2017): 735-742. https://doi.org/10.3892/etm.2017.4560