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Updated: Jul 25, 2025

Mouse Models Of Helicobacter Infection And Gastric Pathologies

Mouse Models Of Helicobacter Infection And Gastric Pathologies

Published on: October 18, 2018

在小鼠中,NOD1调解了响应Helicobacter pylori感染的上皮细胞中的互白素-18处理

L S Tran^1,2, L Ying^1,2, K D'Costa¹

¹Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Melbourne, VIC, Australia.

Nature communications

|June 26, 2023

概括

NOD1调节了上皮细胞中的介质素-18 (IL-18) 处理,独立于规范性炎症体. 这种NOD1介导的途径可以防止Helicobacter pylori诱导的病理和前瘤变化.

科学领域:

免疫学免疫学免疫学
细胞生物学细胞生物学
微生物学微生物学

背景情况:

介素-1家族成员IL-1β和IL-18需要炎症酶来激活.
已知IL-1β在髓质细胞中的炎症酶途径,但IL-18在非髓质细胞中的处理仍不清楚.

研究的目的:

研究在上皮细胞中IL-18处理的机制.
了解NOD1在上皮细胞对Helicobacter pylori的反应中的作用.

主要方法:

研究了小鼠上皮细胞中IL-18处理的NOD1调节.
研究了NOD1,caspase-1和正规的炎症酶途径组件 (RIPK2,NF-κB,NLRP3,ASC) 之间的相互作用.
评估了对H. pylori诱导的病理的体内保护.

主要成果:

NOD1通过caspase-1在上皮细胞中调解IL-18的处理和成熟.
这一途径独立于正规的炎症组分 (RIPK2,NF-κB,NLRP3,ASC).
在体内,NOD1激活和IL-18的产生可以防止H. pylori诱导的前新生变化.

结论:

NOD1在上皮细胞产生生物活性IL-18.8中起着至关重要的作用.
NOD1-caspase-1通路对于表皮细胞对H. pylori的防御至关重要.
这一途径有助于维持上皮质平衡,并预防胃病理.

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