畜牧兽医学报 ›› 2024, Vol. 55 ›› Issue (12): 5839-5853.doi: 10.11843/j.issn.0366-6964.2024.12.045

• 临床兽医 • 上一篇    下一篇

改良育阴方对非洲猪瘟病毒感染PAMs的cGAS-STING通路影响

陈晓丽1(), 周佳浩1, 周静1, 屈倩1, 王志华1, 熊鹰1, 朱咏琪1, 贾伟新1, 吕伟杰1,*(), 郭世宁1,2,*()   

  1. 1. 华南农业大学兽医学院, 广州 510642
    2. 华南农业大学国际中兽医研究所, 广州 510642
  • 收稿日期:2024-01-02 出版日期:2024-12-23 发布日期:2024-12-27
  • 通讯作者: 吕伟杰,郭世宁 E-mail:xiaolichen@stu.scau.edu.cn;lvwj@scau.edu.cn;shining@scau.edu.cn
  • 作者简介:陈晓丽(1992-), 女, 福建诏安人, 博士生, 主要从事中药抗病毒研究, E-mail: xiaolichen@stu.scau.edu.cn
  • 基金资助:
    广东省重点领域研发计划(2019B020211004)

Effect of Modified Yuyin Decoction on cGAS-STING Pathway of African Swine Fever Virus Infected PAMs

CHEN Xiaoli1(), ZHOU Jiahao1, ZHOU Jing1, QU Qian1, WANG Zhihua1, XIONG Ying1, ZHU Yongqi1, JIA Weixin1, LÜ Weijie1,*(), GUO Shining1,2,*()   

  1. 1. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
    2. International Institute of Traditional Chinese Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2024-01-02 Online:2024-12-23 Published:2024-12-27
  • Contact: LÜ Weijie, GUO Shining E-mail:xiaolichen@stu.scau.edu.cn;lvwj@scau.edu.cn;shining@scau.edu.cn

摘要:

旨在为评价中药体外对非洲猪瘟病毒的抑制作用,本研究将5种试验用药:连翘、马勃、改良育阴方(modified Yuyin decoction, MYY)、复方鱼腥草(复方2)和银翘马勃散(复方3),通过qPCR检测不同中药在被非洲猪瘟病毒(African swine fever virus, ASFV)感染的猪肺泡巨噬细胞(porcine alveolar macrophages, PAMs)中,对ASFV编码的衣壳蛋白p72的影响,筛选出可以显著降低ASFV-p72基因表达的中药为改良育阴方(MYY)。采用LC-MS分析检测出改良育阴方的主要化学成分;采用CCK8法观察改良育阴方对猪肺泡巨噬细胞(PAMs)活力的影响;荧光定量PCR检测ASFV-p72基因的表达;Western blot和ELISA检测CGAS-STING信号通路蛋白表达水平;RU.521作为cGAS抑制剂用于验证MYY在cGAS-STING通路中对ASFV的作用。结果表明,在PAMs中,MYY可以显著降低ASFV-p72基因表达,在ASFV感染2 h给药效果最佳,对ASFV感染PAMs后的细胞活力具有浓度依赖性改善作用。攻毒后2 h,使用MYY发现PAMs细胞上清液中干扰素基因刺激蛋白(STING)、TANK结合激酶1(TBK1)、干扰素调节因子3(IRF3)、干扰素诱导跨膜蛋白3(IFITM3)表达量的下降,PAMs细胞内环状GMP-AMP合成酶(cGAS)、干扰素β(IFNβ)蛋白量表达增加,MYY可激活cGAS-STING-TBK1-IRF3-IFNβ信号通路,促进IFITM3的表达。经RU.521处理后,MYY仍能提高细胞活力,降低ASFV-p72基因的表达。综上所述,MYY具有抑制ASFV的潜在作用,可能与cGAS-STING信号通路的激活促进IFITM3的表达有关。

关键词: 改良育阴方, 非洲猪瘟病毒, ASFV-p72基因, CGAS-STING信号通路, LC-MS分析

Abstract:

In order to evaluate the efficacy of Chinese traditional medicine against African swine fever virus (ASFV) in vitro, five experimental drugs were used in this study. The effects of different Chinese herbal medicines on ASFV encored capshell protein p72 in porcine alveolar macrophages (PAMs) infected with African swine fever virus were detected by qPCR. Modified Yuyin decoction (MYY) was selected as a Chinese medicine that could significantly reduce the expression of ASFV-p72 gene. The main components of anti-ASFV were detected by LC-MS analysis. CCK8 method was used to observe the effect of modified Yuyin decoction on the activity of PAMs. The expression of ASFV-p72 gene was detected by fluorescence quantitative PCR. Western blot and ELISA were used to detect CGAS-STING signaling pathway protein expression. RU.521 was used as a cGAS inhibitor to verify the anti-ASFV effect of MYY in the CGAS-STING pathway. The results showed that MYY can significantly reduce the expression of ASFV-p72 gene in PAMs, and the best effect is given at 2 h after ASFV infection, and it has a concentration-dependent improvement effect on the cell viability after ASFV infection of PAMs. The expression levels of interferon gene stimulating protein (STING), TANK binding kinase 1 (TBK1), interferon regulatory factor 3 (IRF3) and interferon induced transmembrane protein 3 (IFITM3) in the supernatant of PAMs cells were decreased by MYY 2 h after the challenge. The expression of cyclic GMP-AMP synthetase (cGAS) and interferon β (IFNβ) protein in PAMs cells increased, and MYY could activate the cGAS-STING-TBK1-IRF3-IFNβsignaling pathway and promote the expression of IFITM3. After treatment with RU.521, MYY could still increase cell viability and decrease the expression of ASFV-p72 gene. In summary, MYY has a potential anti-ASFV effect, which may be related to the activation of cGAS-STING signaling pathway to promote the expression of IFITM3.

Key words: modified Yuyin decoction, African swine fever virus, ASFV-p72 gene, CGAS-STING signaling pathway, LC-MS analysis

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