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Effect of lovastatin on coxsackievirus B3 infection in human endothelial cells

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Abstract

Objective

The coxsackie and adenovirus receptor (CAR) mediates the entry of coxsackievirus B (CVB) and adenovirus into host cells and is, therefore, a key determinant for the molecular pathogenesis of viral diseases such as myocarditis. The aim was to investigate the influence of HMG-CoA reductase inhibitor lovastatin on CAR expression in endothelial cells.

Methods

Human umbilical vein endothelial cells (HUVECs) were exposed to different concentrations of lovastatin (0.05–5 μmol/l) for up to 48 h. Alterations in CAR expression were examined by quantitative real-time PCR (qRT-PCR) and flow cytometry. In addition, after treatment with 1 μmol/l lovastatin for 48 h, HUVECs were infected for 8 h with CVB3 and virus replication was detected by qRT-PCR using viral-specific TaqMan probes.

Results

We found that lovastatin decreases CAR mRNA expression by up to 80 % (p < 0.01) and CAR protein expression by up to 19 % (p < 0.01), in a concentration-dependent manner. Moreover, virus replication of CVB3 was significantly inhibited after lovastatin treatment (p < 0.05). The signaling mechanism of CAR down-regulation by lovastatin depends on the Rac1/Cdc42 pathway.

Conclusion

This study shows for the first time that lovastatin reduces the expression of CAR and subsequently the replication of CVB3 in HUVECs.

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Acknowledgments

We thank Hendrik Milting (PhD) for facilitating Real-Time PCR and Heike Seidenstücker for supporting viral infection studies. We also very much appreciate funding of our research by the FoRUM programme of the Ruhr-University Bochum (grant F722-11), and a donation by the Symnick-Foundation, Bielefeld, Germany.

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Correspondence to Bianca Werner.

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Responsible Editor: Ikuo Morita.

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Werner, B., Dittmann, S., Funke, C. et al. Effect of lovastatin on coxsackievirus B3 infection in human endothelial cells . Inflamm. Res. 63, 267–276 (2014). https://doi.org/10.1007/s00011-013-0695-z

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  • DOI: https://doi.org/10.1007/s00011-013-0695-z

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