通过针对7-脱胆固醇减少酶来抑制上调的干扰素反应来抑制伪狂犬病病毒的复制
Zicheng Ma1, Lei Guo1, Mengjiao Pan1
1Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
Veterinary microbiology
|January 26, 2024
概括
伪狂热病毒 (PRV) 感染高调节7-脱胆固醇减少酶 (DHCR7),通过增加胆固醇来促进病毒复制. 用AY9944抑制DHCR7抑制了PRV,提供了新的治疗策略.
科学领域:
- 病毒学 病毒学
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
背景情况:
- 伪狂热病毒 (PRV) 在猪业中造成重大经济损失.
- 胆固醇代谢越来越多地被认为是病毒复制中的作用.
- 胆固醇代谢在PRV感染中的具体参与以前是未知的.
研究的目的:
- 为了研究胆固醇代谢在PRV复制中的作用.
- 为了确定参与PRV诱导的胆固醇变化的特定酶和途径.
- 探索基于胆固醇代谢的PRV感染的潜在治疗点.
主要方法:
- 蛋白质组分析以确定PRV感染后差异表达的蛋白质.
- 酶活性测试以确认已识别的蛋白质的功能.
- 干扰素通路分析,包括IRF3的酸化和IFN-β和ISG水平.
- 在体外和体内实验中使用DHCR7抑制剂 (AY9944) 来评估PRV抑制.
主要成果:
- 蛋白质组分析显示,在PRV感染后,7-脱胆固醇减少酶 (DHCR7) 的上调.
- DHCR7通过将7-脱胆固醇 (7-DHC) 转化为胆固醇来促进PRV复制,从而增加细胞胆固醇.
- DHCR7抑制IRF3酸化,导致干扰素β (IFN-β) 和干扰素刺激基因 (ISG) 的产生减少.
- DHCR7抑制剂AY9944在体外和体内显著抑制了PRV复制.
结论:
- DHCR7是一种关键的酶,它将胆固醇代谢与PRV复制联系起来.
- DHCR7通过调节细胞胆固醇水平并抑制宿主干扰素反应,促进PRV复制.
- 用像AY9944这样的抑制剂向DHCR7是一个有希望的策略来控制PRV感染.
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