贝尔盖耶拉心脏变体诱导了巨细胞中独特的细胞质真空化细胞死亡浮症
Rudi Mao1,2, Hongwei Pan3,4, Luyu Yang1
1Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Clinical Laboratory/Qilu Hospital, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, China.
Cell discovery
|October 20, 2025
概括
贝尔盖耶拉心脏触发了巨细胞中独特的细胞质真空化细胞死亡,称为floatptosis. 抑制这种细胞死亡途径可以增强宿主对细菌感染的防御能力.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 细菌病原体采用各种策略来颠覆宿主细胞死亡和对持久感染的免疫力.
- 与传染性内心炎相关的病原体Bergeyella cardium在口腔样本中普遍存在.
研究的目的:
- 在巨细胞中研究由Bergeyella心脏变体 (BCV) 诱导的细胞死亡机制.
- 确定参与BCV诱导的细胞死亡和宿主防御的宿主因素和治疗点.
主要方法:
- 巨细胞被BCV感染,并分析细胞死亡途径.
- 细胞质真空化是由BCV,外膜囊泡 (OMV) 或桶状蛋白质诱导的.
- 评估了内分体溶解物载体家族9成员A9 (SLC9A9) 在真空聚变中的作用.
- 评估了阿米洛里德抑制浮症和SLC9A9缺乏对宿主防御的影响.
主要成果:
- BCV诱导了独特的细胞质真空化,称为化lysosome相关终止 (floatptosis),以及巨细胞中轻微的亡.
- 细胞质真空化可能是由BCV,OMV或桶状蛋白 (脂卡林,β-桶,PorV) 触发的.
- 在BCV,OMV和蛋白质诱导的细胞质真空化中,SLC9A9促进了真空聚变.
- 阿米洛里德抑制了浮症,阿米洛里德和SLC9A9缺陷都增强了对BCV的宿主防御.
结论:
- 贝尔盖耶拉心脏变体诱导了一种新的细胞死亡途径,即浮症,其特征是细胞质真空化.
- 在这种细胞死亡过程中,SLC9A9对于真空聚变至关重要.
- 通过阿米洛里德或向SLC9A9调节浮症,可以针对Bergeyella心脏感染提供潜在的治疗策略.
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