通过负调节PANoptosis,A20限制了PDCoV的释放
Chunyu Lu1, Xiaofeng Xue2, Zhuoqi Chen2
1College of Veterinary Medicine, Hebei Agricultural University, Baoding, China.
mBio
|March 3, 2026
概括
猪三角冠状病毒 (PDCoV) 在肠道细胞中触发细胞死亡,称为PANoptosis,帮助病毒释放. 主体因子A20限制了这个过程,提供了一个潜在的抗病毒目标.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 冠状病毒通过诱导各种细胞死亡模式引起严重疾病.
- 调节这些途径的宿主因子对于抗病毒防御至关重要,但仍然不完全理解.
研究的目的:
- 为了研究宿主因子A20在猪三角型冠状病毒 (PDCoV) 感染期间调节PANoptosis中的作用.
- 阐明PDCoV利用PANoptosis进行病毒输出的机制.
主要方法:
- 在肠道上皮细胞中利用PDCoV感染的细胞培养模型.
- 研究了A20,RIPK3和PANoptosis信号之间的相互作用.
- 采用Transwell模型和药理抑制剂来评估病毒传播和上皮屏障完整性.
主要成果:
- 感染PDCoV诱导肠道上皮细胞中的PANoptosis,促进病毒颗粒的释放.
- A20通过对RIPK3进行二基化来负面调节PANoptosis,从而限制细胞溶解和病毒输出.
- 抑制GSDMD和MLKL孔隙形成减少了病毒传播,并保持了上皮完整性.
结论:
- A20-PANoptosis轴是PDCoV感染中的关键宿主-病原体相互作用.
- PDCoV利用PANoptosis介导的膜破裂进行病毒传播,独立于病毒复制.
- 准A20-PANoptosis通路是针对肠道冠状病毒感染的潜在治疗策略.
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