Pyroptosis of pulmonary fibroblasts and macrophages through NLRC4 inflammasome leads to acute respiratory failure.

IF 7.5 1区生物学 Q1 CELL BIOLOGY

Cell reports Pub Date : 2025-03-29 DOI:10.1016/j.celrep.2025.115479

Yan Zhang, Guoying Zhang, Brittany Dong, Ankit Pandeya, Jian Cui, Samuel Dos Santos Valenca, Ling Yang, Jiaqian Qi, Zhuodong Chai, Congqing Wu, Daniel Kirchhofer, Toshihiko Shiroishi, Fadi Khasawneh, Min Tao, Feng Shao, Christopher M Waters, Yinan Wei, Zhenyu Li

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Abstract

The NAIP/NLRC4 inflammasome plays a pivotal role in the defense against bacterial infections, with its in vivo physiological function primarily recognized as driving inflammation in immune cells. Acute lung injury (ALI) is a leading cause of mortality in sepsis. In this study, we identify that the NAIP/NLRC4 inflammasome is highly expressed in both macrophages and pulmonary fibroblasts and that pyroptosis of these cells plays a critical role in lung injury. Mice challenged with gram-negative bacteria or flagellin developed lethal lung injury, characterized by reduced blood oxygen saturation, disrupted lung barrier function, and escalated inflammation. Flagellin-induced lung injury was protected in caspase-1 or GSDMD-deficient mice. These findings enhance our understanding of the NAIP/NLRC4 inflammasome's (patho)physiological function and highlight the significant role of inflammasome activation and pyroptosis in ALI during sepsis.

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来源期刊

Cell reports CELL BIOLOGY-

CiteScore

13.80

自引率

1.10%

发文量

1305

审稿时长

77 days

期刊介绍： Cell Reports publishes high-quality research across the life sciences and focuses on new biological insight as its primary criterion for publication. The journal offers three primary article types: Reports, which are shorter single-point articles, research articles, which are longer and provide deeper mechanistic insights, and resources, which highlight significant technical advances or major informational datasets that contribute to biological advances. Reviews covering recent literature in emerging and active fields are also accepted. The Cell Reports Portfolio includes gold open-access journals that cover life, medical, and physical sciences, and its mission is to make cutting-edge research and methodologies available to a wide readership. The journal's professional in-house editors work closely with authors, reviewers, and the scientific advisory board, which consists of current and future leaders in their respective fields. The advisory board guides the scope, content, and quality of the journal, but editorial decisions are independently made by the in-house scientific editors of Cell Reports.