数字农科院2.0

PRPF19 Limits Porcine Epidemic Diarrhea Virus Replication through Targeting and Degrading Viral Capsid Protein

文献类型： 外文期刊

作者： Zhai, Xueying;Kong, Ning;Wang, Chunmei;Qin, Wenzhen;Dong, Sujie;Zhai, Huanjie;Yang, Xinyu;Ye, Chenqian;Ye, Manqing;Li, Guoxin;Tong, Wu;Liu, Changlong;Zheng, Hao;Yu, Hai;Zhang, Wen;Yang, Xia;Tong, Guangzhi;Shan, Tongling

作者机构：

关键词： MARCH8;N protein;NDP52;PEDV;PRPF19;selective autophagy

期刊名称： JOURNAL OF VIROLOGY

ISSN： 0022-538X

年卷期： 2023 年 97 卷 1 期

页码：

收录情况： SCIE（2023版）

摘要： The highly virulent porcine epidemic diarrhea virus (PEDV) emerged in 2010, and causes high mortality rates in newborn pigs. There are no effective and safe vaccines against the highly virulent PEDV. Porcine epidemic diarrhea (PED) indicates the disease of the acute and highly contagious intestinal infection due to porcine epidemic diarrhea virus (PEDV), with the characteristics of watery diarrhea, vomiting, and dehydration. One of the reasons for diarrhea and death of piglets is PEDV, which leads to 100% mortality in neonatal piglets. Therefore, it is necessary to explore the interaction between virus and host to prevent and control PEDV. This study indicated that the host protein, pre-mRNA processing factor 19 (PRPF19), could be controlled by the signal transducer as well as activator of transcription 1 (STAT1). Thus, PEDV replication could be hindered through selective autophagy. Moreover, PRPF19 was found to recruit the E3 ubiquitin ligase MARCH8 to the N protein for ubiquitination. For the purpose of degradation, the ubiquitin N protein is acknowledged by the cargo receptor NDP52 and transported to autolysosomes, thus inhibiting virus proliferation. To conclude, a unique antiviral mechanism of PRPF19-mediated virus restriction was shown. Moreover, a view of the innate immune response and protein degradation against PEDV replication was provided in this study.IMPORTANCE The highly virulent porcine epidemic diarrhea virus (PEDV) emerged in 2010, and causes high mortality rates in newborn pigs. There are no effective and safe vaccines against the highly virulent PEDV. This virus has caused devastating economic losses in the pork industry worldwide. Studying the relationship between virus and host antiviral factors is important to develop the new antiviral strategies. This study identified the pre-mRNA processing factor 19 (PRPF19) as a novel antiviral protein in PEDV replication and revealed its viral restriction mechanisms for the first time. PRPF19 recruited the E3 ubiquitin ligase MARCH8 to the PEDV N protein for ubiquitination, and the ubiquitin N protein was acknowledged by the cargo receptor NDP52 and transported to autolysosomes for degradation. Our findings provide new insights in host antiviral factors PRPF19 that regulate the selective autophagy protein degradation pathway to inhibit PEDV replication.

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