实用医学杂志 ›› 2024, Vol. 40 ›› Issue (10): 1351-1356.doi: 10.3969/j.issn.1006-5725.2024.10.004

• 基础研究 • 上一篇    下一篇

RhoF介导的Th17极化在急性胰腺炎发生中的作用及机制

孙茹雪1,朱梦莉1(),刘晶晶2,陈飞1   

  1. 1.武汉市中西医结合医院(武汉市第一医院),急诊医学科,(武汉 430030 )
    2.武汉市中西医结合医院(武汉市第一医院),心血管内科,(武汉 430030 )
  • 收稿日期:2023-07-28 出版日期:2024-05-25 发布日期:2024-05-21
  • 通讯作者: 朱梦莉 E-mail:sny200910@163.com
  • 基金资助:
    湖北省卫生健康科研基金项目(20210836)

Role and mechanism of RhoF-mediated Th17 polarization in development of acute pancreatitis

Ruxue SUN1,Mengli ZHU1(),Jingjing LIU2,Fei. CHEN1   

  1. *.Department of Emergency Medicine,Wuhan Integrated Traditional Chinese and Western Medicine Hospital (Wuhan First Hospital),Wuhan 430030,China
  • Received:2023-07-28 Online:2024-05-25 Published:2024-05-21
  • Contact: Mengli ZHU E-mail:sny200910@163.com

摘要:

目的 探讨Rho相关GTP结合蛋白F(RhoF)介导的Th17极化在重度急性胰腺炎(SAP)发生中的作用及机制研究。 方法 将RhoF转基因小鼠随机分为3组:对照组(n = 10)、SAP组(n = 10)和SAP+Y-27632组(n = 10)。另将WT小鼠随机分为3组:对照组(n = 10)、SAP组(n = 10)和SAP+Y-27632组(n = 10)。除对照组外,其他组建立SAP模型。SAP+Y-27632组在模型建立后,通过尾静脉输注Y-27632。分离小鼠血液样本中的T细胞,用于RhoF、p-MYPT1蛋白检测和ROCK活性测定,并采用流式细胞仪分析产生IL-17的淋巴CD4+T细胞的百分比。 结果 与对照组相比,SAP组小鼠T细胞中RhoF、p-MYPT1表达量增加(P < 0.01),并且RhoF的水平与p-MYPT1的水平密切相关(P < 0.05)。与WT组相比,RhoF组小鼠T细胞的RhoF蛋白水平的表达增加约30%,并且CD4+ T细胞自发产生IL-17的水平显著增加(P < 0.01)。与WT小鼠相比,RhoF转基因小鼠胰腺损伤的组织学评分,T细胞的RhoF、p-MYPT1表达量,IL-17+ T细胞数量和血清IL-17水平明显增加(P < 0.05)。SAP+Y-27632组的组织学评分,T细胞的RhoF、p-MYPT1表达量,IL-17+ T细胞数量和血清IL-17水平显著低于SAP组(P < 0.05)。 结论 RhoF/ROCK信号通路介导的Th17细胞极化参与SAP的发病机制。

关键词: Rho相关GTP结合蛋白F, Th17细胞, 重症急性胰腺炎

Abstract:

Objective To investigate the role and mechanism of Rho-related GTP-binding protein F (RhoF)-mediated Th17 polarization in the development of severe acute pancreatitis (SAP). Methods RhoF transgenic mice were randomly divided into control group (n = 10), SAP group (n = 10) and SAP+Y-27632 group (n = 10), and WT mice were randomly divided into control group (n = 10), SAP group (n = 10) and SAP+Y-27632 group (n = 10). SAP models were established in all groups except the control group. The SAP+Y-27632 group was infused with Y-27632 via tail vein after model establishment. T cells in mouse blood samples were isolated for RhoF, p-MYPT1 protein detection and ROCK activity determination, and the percentage of lymphoid CD4+T cells producing IL-17 was analyzed by flow cytometry. Results The expression of RhoF and p-MYPT1 was increased in T cells in the SAP group compared with that in the control group (P < 0.01), and the level of RhoF was closely correlated with that of p-MYPT1 (P = 0.018). The expression of RhoF protein level in T cells of mice in the RhoF group increased by approximately 30% compared to that in the WT group, and the level of spontaneous IL-17 production by CD4+ T cells was significantly increased (P = 0.003). Compared with WT mice, the histological score of pancreatic injury, the expression of RhoF and p-MYPT1 in T cells, the number of IL-17+ T cells and serum IL-17 level in RhoF transgenic mice were significantly increased (P < 0.05). The histological score, RhoF and p-MYPT1 expression of T cells, IL-17+ T cell numbers and serum IL-17 level were significantly lower in the SAP+Y-27632 group than those in the SAP group (P < 0.05). Conclusion RhoF/ROCK signaling pathway-mediated polarization of Th17 cells is involved in the pathogenesis of SAP.

Key words: Rho-associated GTP-binding protein F, Th17 cells, severe acute pancreatitis

中图分类号: