Frontiers in immunology · 2025
Identification of Grb2 protein as a potential mediator of macrophage activation in acute pancreatitis based on bioinformatics and experimental verification.
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Shen Qinhao, Wang Shuai, Wu Keyan, Wang Liuhui, Gong Weijuan, Lu Guotao, Chen Weiwei, Yuan Chenchen, Tu Bo, Li Wei, Wang Yaodong, Yang Weixuan
Аннотация
INTRODUCTION: Macrophage activation is closely associated with Acute pancreatitis (AP). We screened and found that Growth factor receptor bound protein 2 (Grb2) is highly expressed in macrophages during AP. However, the relationship between Grb2 and AP is still poorly understood. In this study, we explored the role of Grb2 in AP.
METHODS: We screened for gene affecting macrophage activation in AP by combining transcriptomics with Single-cell RNA-sequence analysis. Next, the expression of Grb2 in M1/M2 macrophage activation was detected by Single-cell RNA-sequence analysis and western blot. Furthermore, the effect of Grb2 on M1/M2 macrophage activation was detected by flow cytometry. The severity of AP was assessed by histological analysis, serum amylase, serum lipase and serum inflammatory factors in vivo. NOD-like receptor thermal protein domain associated protein 3 (Nlrp3) and Nuclear factor kappa-B (NF-kB) signaling pathways were also evaluated.
RESULTS: Grb2 is mainly expressed in macrophages of pancreas in AP and up-regulated in M1 macrophage activation. Inhibiting Grb2 could alleviate AP by preventing M1 macrophage activation through down-regulating Nlrp3 and NF-κB.
DISCUSSION: Inhibition of Grb2 can effectively prevent M1 macrophage activation and alleviate AP. Grb2 may potentially be an effective target of macrophage activation for the treatment of AP.
METHODS: We screened for gene affecting macrophage activation in AP by combining transcriptomics with Single-cell RNA-sequence analysis. Next, the expression of Grb2 in M1/M2 macrophage activation was detected by Single-cell RNA-sequence analysis and western blot. Furthermore, the effect of Grb2 on M1/M2 macrophage activation was detected by flow cytometry. The severity of AP was assessed by histological analysis, serum amylase, serum lipase and serum inflammatory factors in vivo. NOD-like receptor thermal protein domain associated protein 3 (Nlrp3) and Nuclear factor kappa-B (NF-kB) signaling pathways were also evaluated.
RESULTS: Grb2 is mainly expressed in macrophages of pancreas in AP and up-regulated in M1 macrophage activation. Inhibiting Grb2 could alleviate AP by preventing M1 macrophage activation through down-regulating Nlrp3 and NF-κB.
DISCUSSION: Inhibition of Grb2 can effectively prevent M1 macrophage activation and alleviate AP. Grb2 may potentially be an effective target of macrophage activation for the treatment of AP.