首页|猪流行性腹泻病毒非结构蛋白Nsp15互作宿主蛋白的筛选及鉴定

猪流行性腹泻病毒非结构蛋白Nsp15互作宿主蛋白的筛选及鉴定

扫码查看
为了筛选和鉴定与猪流行性腹泻病毒(porcine epidemic diarrhea virus,PEDV)非结构蛋白15(non-structural protein 15,Nsp15)互作的关键宿主蛋白,通过IP/pull-down beads结合质谱技术筛选、鉴定与PEDV非结构蛋白Nsp15 互作的宿主蛋白,并利用免疫共沉淀(co-immunoprecipitation)、激光共聚焦验证其互作关系,最后应用 Western blotting 和实时荧光定量多聚核苷酸链式反应(real-time quantitative polymerase chain reaction,RT-qPCR)初步明确宿主蛋白SLC25a3 与PEDV之间的作用关系.本研究成功构建了 Nsp15 重组真核表达载体 pcDNA3.1(+)-Flag-Nsp15,并筛选出与PEDV Nsp15 互作的宿主蛋白SLC25a3.免疫共沉淀及激光共聚焦结果显示PEDV Nsp15 与宿主蛋白SLC25a3 存在互作关系.宿主蛋白SLC25a3 能够显著抑制PEDV复制且呈现剂量依赖性.本研究为进一步探究SLC25a3 在抗PEDV免疫应答中的作用及机制提供了参考.
Screening and identification of host proteins interacting with the non-structural protein 15(Nsp15)of porcine epidemic diarrhea virus
To screen and identify the key host proteins interacting with the non-structural protein 15(Nsp15)of porcine epidemic diarrhea virus(PEDV).The IP/pull-down assay and mass spectrometry were employed to screen and identify the host proteins interacting with Nsp15.The interaction between the host protein and Nsp15 was studied by co-immunoprecipitation and laser scanning confocal microscopy.Finally,Western blotting and RT-qPCR were employed to examine the interaction between SLC25a3 and PEDV.The recombinant eukaryotic expression vector pcDNA3.1(+)-Flag-Nsp15 was successfully constructed,and the host protein SLC25a3 interacting with PEDV Nsp15 was screened out.An interaction existed between SLC25a3 and Nsp15,and SLC25a3 significantly inhibited PEDV replication in a dose-dependent manner.SLC25a3 inhibits PEDV replication.The results of this study provide a basis for deciphering the role and mechanism of SLC25a3 in the host immune response to PEDV infection.

porcine epidemic diarrheanon-structural proteinsprotein-protein interactionvirus replication

孙金磊、于瑞明、张莉萍、张中旺、王永录、潘丽、张全伟、刘新生

展开 >

甘肃农业大学 生命科学技术学院,甘肃 兰州 730070

中国农业科学院兰州兽医研究所 动物疫病防控全国重点实验室,甘肃 兰州 730000

猪流行性腹泻 非结构蛋白 蛋白互作 病毒复制

2024

生物工程学报
中国科学院微生物研究所 中国微生物学会

生物工程学报

CSTPCD北大核心
影响因子:0.641
ISSN:1000-3061
年,卷(期):2024.40(12)