Establishment and Characterization of a High and Stable Porcine CD163-Expressing MARC-145 Cell Line

Xiangju Wu, Jing Qi, Xiaoyan Cong, Lei Chen, Yue Hu, Dongwan Yoo, Guisheng Wang, Fulin Tian, Feng Li, Wenbo Sun, Zhi Chen, Lihui Guo, Jiaqiang Wu, Jun Li, Jinbao Wang, Xiaomin Zhao, Yijun Du

Research output: Contribution to journalArticlepeer-review


Isolation and identification of diverse porcine reproductive and respiratory syndrome viruses (PRRSVs) play a fundamental role in PRRSV research and disease management. However, PRRSV has a restricted cell tropism for infection. MARC-145 cells are routinely used for North American genotype PRRSV isolation and vaccine production. But MARC-145 cells have some limitations such as low virus yield. CD163 is a cellular receptor that mediates productive infection of PRRSV in various nonpermissive cell lines. In this study, we established a high and stable porcine CD163- (pCD163-) expressing MARC-145 cell line toward increasing its susceptibility to PRRSV infection. Indirect immunofluorescence assay (IFA) and Western blotting assays showed that pCD163 was expressed higher in pCD163-MARC cell line than MARC-145 cells. Furthermore, the ability of pCD163-MARC cell line to propagate PRRSV was significantly increased as compared with MARC-145 cells. Finally, we found that pCD163-MARC cell line had a higher isolation rate of clinical PRRSV samples and propagated live attenuated PRRS vaccine strains more efficiently than MARC-145 cells. This pCD163-MARC cell line will be a valuable tool for propagation and research of PRRSV.

Original languageEnglish (US)
Article number4315861
JournalBioMed Research International
StatePublished - 2018

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Immunology and Microbiology


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