Abstract: Interstitial lung disease associated with connective tissue disease(CTD-ILD), as one of the common interstitial lung diseases(ILD), is a common manifestation of connective tissue disease involving the lung. Its pathogenesis is complex and involves many influences. However, the process of pulmonary fibrosis caused by CTD-ILD is similar to that caused by other ILD. NLRP3 inflammasome is an intracellular sensing protein that can sense changes inside and outside the cell and mediate intense inflammation. Its activation is closely regulated by the body. Out-of-control inflammasome plays an important role in a variety of inflammation-related diseases. In recent years, many studies have confirmed the unique mechanism and clinical significance of inflammatory bodies in the pathogenesis and fibrosis of CTD-ILD, which is considered as a new target for the treatment of CTD-ILD. This study reviews the current research status of CTD-ILD, reviews the activation and regulatory mechanisms of inflammasome, and emphasizes the potential of inflammasome in the treatment of CTD-ILD, with a view to providing new ideas for the clinical treatment of CTD-ILD and blocking fibrosis with inflammasome.

Key words: connective tissue diseases, interstitial lung diseases, lung fibrosis, NLRP3 inflammasome

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