Different Infectivity of Swine Enteric Coronaviruses in Cells of Various Species

文献类型： 外文期刊

第一作者： Li, Zhongyuan

作者： Li, Zhongyuan;Chen, Yunyan;Li, Liang;Xue, Mei;Feng, Li

作者机构：

关键词： TGEV; PEDV; PDCoV; replication; aminopeptidase N (APN)

期刊名称：PATHOGENS （ 影响因子：3.7； 五年影响因子：3.7 ）

ISSN：

年卷期： 2024 年 13 卷 2 期

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收录情况： SCI

摘要： Swine enteric coronaviruses (SECoVs), including porcine deltacoronavirus (PDCoV), transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), and swine acute diarrhea syndrome coronavirus (SADS-CoV), have caused high mortality in piglets and, therefore, pose serious threats to the pork industry. Coronaviruses exhibit a trend of interspecies transmission, and understanding the host range of SECoVs is crucial for improving our ability to predict and control future epidemics. Here, the replication of PDCoV, TGEV, and PEDV in cells from different host species was compared by measuring viral genomic RNA transcription and protein synthesis. We demonstrated that PDCoV had a higher efficiency in infecting human lung adenocarcinoma cells (A549), Madin-Darby bovine kidney cells (MDBK), Madin-Darby canine kidney cells (MDCK), and chicken embryonic fibroblast cells (DF-1) than PEDV and TGEV. Moreover, trypsin can enhance the infectivity of PDCoV to MDCK cells that are nonsusceptible to TGEV. Additionally, structural analyses of the receptor ectodomain indicate that PDCoV S1 engages Aminopeptidase N (APN) via domain II, which is highly conserved among animal species of different vertebrates. Our findings provide a basis for understanding the interspecies transmission potential of these three porcine coronaviruses.

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