Grp78 regulates NLRP3 inflammasome and participates in Sjogren’s syndrome

• Published in: International immunopharmacology 2024-10, Vol.140, p.112815, Article 112815
• Main Authors: He, Jing, Xu, Meimei, Chen, Yueyue, Wu, Suling
• Format: Article
• Language: English
• Subjects: Forsythiaside A; Grp78; NLRP3; Sjogren’s syndrome
• ISSN: 1567-5769; 1878-1705; 1878-1705
• DOI: 10.1016/j.intimp.2024.112815

•FA effectively reduced the secretion of inflammatory cytokines, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in the nucleus in SS.•When Grp78 expression was silenced, it effectively reduced the secretion of inflammatory cytokines, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in the nucleus in SS.•FA effectively inhibit the secretion of inflammatory cytokines induced by overexpression of Grp78, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in the nucleus in SS. The purpose of the present study was to potential effects of forsythiaside A (FA) on Sjogren’s syndrome (SS). Enzyme linked immunosorbent assay for detecting cytokines and Western blotting was used for detecting related protein expression. FA effectively reduced the secretion of inflammatory cytokines, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in SS. FA also effectively inhibited the high expression of Grp78 in SS. When Grp78 expression was silenced, it effectively reduced the secretion of inflammatory cytokines, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in the nucleus in SS. FA effectively inhibit the secretion of inflammatory cytokines induced by overexpression of Grp78, the expression of Caspase-1 and NLRP3 proteins and the expression of p65 in the nucleus in SS. FA induces the degradation of Grp78 protein, regulates the NF-κB signaling pathway in SS and inhibited NLRP3 inflammasome activation and reduced the release of inflammatory cytokines to alleviate SS.