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感染猪流行性腹泻病毒的Vero细胞和IPEC-J2细胞之间细胞因子表达的差异。

Differences in cytokines expression between Vero cells and IPEC-J2 cells infected with porcine epidemic diarrhea virus.

作者信息

Yuan Chen, Sun Lidan, Chen Ligong, Li Limin, Yao Zuojun, Wang Yawen, Guo Haiyong, Li Tanqing, Song Qinye

机构信息

Veterinary Biological Technology Innovation Center of Hebei Province, College of Veterinary Medicine, Hebei Agricultural University, Baoding, China.

School of Life Science, Jilin Normal University, Siping, China.

出版信息

Front Microbiol. 2022 Nov 10;13:1002349. doi: 10.3389/fmicb.2022.1002349. eCollection 2022.

Abstract

Porcine epidemic diarrhea virus (PEDV) primarily infects suckling piglets and causes severe economic losses to the swine industry. Cytokines, as part of the innate immune response, are important in PEDV infection. The cytokines secreted by cell infection models might reflect true response to viral infection of target cells . Vero cells and IPEC-J2 are commonly used as an model to investigate PEDV infection. However, it is not clear which type of cells is more beneficial to the study of PEDV. In our study, firstly, Vero cells and IPEC-J2 were successfully infected with PEDV virulent strains (HBQY2016) and attenuated vaccine strains (CV777) and were capable of supporting virus replication and progeny release. Moreover, cytokine differences expression by Vero cells and IPEC-J2 cells infected with two PEDV strains were analyzed. Compared with IPEC-J2 cells, only the mRNA levels of TGF-β, MIP-1β and MCP-1 were detected in Vero cells. ELISA assay indicated that compared to the control group, the PEDV-infected group had significantly induced expression levels of IL-1β, MIP-1β, MCP-1, IL-8, and CXCL10 in IPEC-J2 cells, while only secretion level of IL-1β, MIP-1β and IL-8 in Vero cells were higher in PEDV infected group. Finally, cytokines change of piglets infected PEDV-HBQY2016 strains were detected by cDNA microarray, and similar to those of IPEC-J2 cells infected PEDV. Collectively, these data determined that the IPEC-J2 could be more suitable used as a cell model for studying PEDV infection compared with Vero cells, based on the close approximation of cytokine expression profile to target cells.

摘要

猪流行性腹泻病毒(PEDV)主要感染哺乳仔猪,给养猪业造成严重经济损失。细胞因子作为固有免疫反应的一部分,在PEDV感染中起重要作用。细胞感染模型分泌的细胞因子可能反映靶细胞对病毒感染的真实反应。Vero细胞和IPEC-J2细胞常用于研究PEDV感染的模型。然而,尚不清楚哪种类型的细胞对PEDV研究更有益。在我们的研究中,首先,Vero细胞和IPEC-J2细胞成功感染了PEDV强毒株(HBQY2016)和弱毒疫苗株(CV777),并能够支持病毒复制和子代释放。此外,分析了感染两种PEDV毒株的Vero细胞和IPEC-J2细胞的细胞因子差异表达。与IPEC-J2细胞相比,Vero细胞中仅检测到TGF-β、MIP-1β和MCP-1的mRNA水平。ELISA检测表明,与对照组相比,PEDV感染组显著诱导了IPEC-J2细胞中IL-1β、MIP-1β、MCP-1、IL-8和CXCL10的表达水平,而PEDV感染组Vero细胞中仅IL-1β、MIP-1β和IL-8的分泌水平较高。最后,通过cDNA微阵列检测感染PEDV-HBQY2016毒株的仔猪细胞因子变化,结果与感染PEDV的IPEC-J2细胞相似。总体而言,基于细胞因子表达谱与靶细胞的密切近似,这些数据确定与Vero细胞相比,IPEC-J2细胞可能更适合用作研究PEDV感染的细胞模型。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d4e/9686284/e508c1cce0b1/fmicb-13-1002349-g001.jpg

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