Expression of the human or porcine C-type lectins DC-SIGN/L-SIGN confers susceptibility to porcine epidemic diarrhea virus entry and infection in otherwise refractory cell lines.

Abstract

Porcine epidemic diarrhea virus (PEDV) is an alphacoronavirus that causes great economic losses in the porcine industry. Although the functional receptor for the virus has not been identified, multiple isolates are able to infect different cell lines. Recently, it has been shown that the human C-type lectin DC-SIGN/L-SIGN (hDC-SIGN/L-SIGN) can promote entry of several coronaviruses. Here we examined whether hDC-SIGN/L-SIGN and its porcine homolog (pDC-SIGN) are entry determinants for PEDV. Expression of hDC-SIGN/L-SIGN or pDC-SIGN in refractory cells dramatically increased infection by a recombinant PEDV expressing green fluorescent protein. In both cases, lectin-mediated infection was inhibited by mannan or anti-hDC-SIGN/L-SIGN or pDC-SIGN antibodies; however, d-galactose had no effect on the virus-infected cells. Our results demonstrate that hDC-SIGN/L-SIGN or pDC-SIGN can mediate the cellular entry and propagation of PEDV, which provides a new theoretical basis for further understanding the infection mechanism of PEDV, and will be helpful for the development of novel therapeutic agents.

• Authors: Pengwei Zhao, Ling-Dong Xu, Yating Zhang, Hongwei Cao, Ruiai Chen, Bin Wang, Yao-Wei Huang
• Journal: Microbial pathogenesis (Microb Pathog) Vol. 157 Pg. 104956 (Aug 2021) ISSN: 1096-1208 [Electronic] England
• PMID: 34022357 (Publication Type: Journal Article)
• Copyright: Copyright © 2021 Elsevier Ltd. All rights reserved.

Chemical References

• Cell Adhesion Molecules
• DC-specific ICAM-3 grabbing nonintegrin
• Lectins, C-Type
• Receptors, Cell Surface

Topics

• Animals
• Cell Adhesion Molecules
• Cell Line
• Chlorocebus aethiops
• Humans
• Lectins, C-Type (genetics)
• Porcine epidemic diarrhea virus (genetics)
• Receptors, Cell Surface (genetics)
• Swine
• Swine Diseases
• Vero Cells