Journal
CELL DEATH DISCOVERY
Volume 8, Issue 1, Pages -Publisher
SPRINGERNATURE
DOI: 10.1038/s41420-022-01166-3
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Funding
- National Key Research and Development Program of China [2020YFC2008400, 2020YFC2008403]
- Shanghai Sailing program [21YF1406800]
- Natural Science Foundation of Shanghai [21ZR1413400]
- National Natural Science Foundation of China [82102253, 81871591]
- Clinical Research Plan of SHDC [SHDC2020CR1005A]
- Shanghai Municipal 2021 Science and Technology Innovation Action Plan [21JC1401400, 21S31902600]
- Talent Program of Fudan University [JIF159607]
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The level of neutrophil extracellular traps (NETs) is increased in ARDS patients and mice models, leading to impaired autophagic flux and disease deterioration. NETs activate METTL3 mediated m(6)A methylation of Sirt1 mRNA, which further enhances abnormal autophagy.
Neutrophil extracellular traps (NETs) assist pathogen clearance, while excessive NETs formation is associated with exacerbated inflammatory responses and tissue injury in acute lung injury (ALI)/acute respiratory distress syndrome (ARDS). Autophagy is generally considered to be a protective process, but autophagy dysfunction is harmful. Whether and how NETs affect autophagic flux during sepsis-induced ALI are currently unknown. Here, we confirmed that the level of NETs was increased in ARDS patients and mice models, which led to impairment of autophagic flux and deterioration of the disease. Mechanistically, NETs activated METTL3 mediated m(6)A methylation of Sirt1 mRNA in alveolar epithelial cells, resulting in abnormal autophagy. These findings provide new insights into how NETs contribute to the development of sepsis-associated ALI/ARDS.
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