实用医学杂志 ›› 2025, Vol. 41 ›› Issue (14): 2174-2182.doi: 10.3969/j.issn.1006-5725.2025.14.008

• 基础研究 • 上一篇    下一篇

LCN2介导EGFR磷酸化对人输卵管上皮细胞炎性损伤的影响

夏亚琼1,朱悦1,蒋呈呈1,谭鸿平1,张雁1,刘玲2()   

  1. 1.湖南中医药大学附属省直中医医院妇二科 (湖南 株洲 412000 )
    2.湖南中医药高等专科学校附属第一医院 妇二科 (湖南 株洲 412000 )
  • 收稿日期:2025-04-12 出版日期:2025-07-25 发布日期:2025-07-29
  • 通讯作者: 刘玲 E-mail:12350157@qq.com
  • 基金资助:
    国家自然科学基金项目(81804140);湖南省卫生科研课题(20232627);湖南省2022年度“神农人才”工程学科带头人——青年神农学者项目(湘中医药[2022]4号);2022年度湖湘青年科技创新人才项目

The effect of LCN2⁃mediated EGFR phosphorylation on inflammatory injury in human fallopian tube epithelial cells

Yaqiong XIA1,Yue ZHU1,Chengcheng JIANG1,Hongping TAN1,Yan ZHANG1,Ling. LIU2()   

  1. The Second Department of Gynecology,Provincial Hospital of Traditional Chinese Medicine Affiliated to Hunan University of Traditional Chinese Medicine,Zhuzhou 412000,Hunan,China
  • Received:2025-04-12 Online:2025-07-25 Published:2025-07-29
  • Contact: Ling. LIU E-mail:12350157@qq.com

摘要:

目的 探讨脂钙蛋白2(lipocalin2, LCN2)调控表皮生长因子受体(epidermal growth factor receptor, EGFR)磷酸化对人输卵管炎性上皮细胞损伤的影响。 方法 取人输卵管上皮细胞,LPS干预建立细胞模型,随机分为空白对照(Control)组、模型(Model)组、实验(Model + si-LCN2或Model + oe-LCN2)组和阴性对照(Model + si-NC或Model + oe-NC)组。探究细胞活性、细胞凋亡、细胞炎症水平、EGFRmRNA、LCN2、EGFR、p-EGFR、p-EGFR/EGFR蛋白表达水平变化。 结果 与Model组相比,Model+si-LCN2组细胞活性提升、细胞凋亡率减低,炎症因子表达下降(P < 0.05);免疫共沉淀证实LCN2与EGFR存在靶向关系。与Model组相比,Model + oe-LCN2组p-EGFR、p-EGFR/EGFR水平升高(P < 0.05),EGFR改变不大(P > 0.05)。 结论 抑制LCN2所介导的EGFR磷酸化,可提高细胞活性、减轻细胞凋亡及细胞炎症,从而改善LPS诱导的人输卵管上皮细胞炎性损伤。

关键词: 脂钙蛋白2, 人输卵管上皮细胞炎性损伤, 表皮生长因子受体, 表皮生长因子受体磷酸化

Abstract:

Objective To investigate the regulatory effect of lipocalin 2 (LCN2) on epidermal growth factor receptor (EGFR) phosphorylation and its impact on inflammatory damage in human fallopian tube epithelial cells. Methods Human fallopian tube epithelial cells were isolated and a lipopolysaccharide (LPS) intervention was applied to establish an in vitro cell model. The cells were randomly assigned into the following groups: a blank control group (Control), a model group (Model), experimental groups (Model + si-LCN2 or Model + oe-LCN2), and negative control groups (Model + si-NC or Model + oe-NC). Changes in cell viability, apoptosis rates, inflammatory levels, as well as the expression of EGFR mRNA, LCN2, EGFR, p-EGFR, and the ratio of p-EGFR/EGFR proteins were evaluated. Results Compared to the Model group, the Model + si-LCN2 group exhibited enhanced cell viability, a reduced apoptosis rate, and decreased expression of inflammatory factors (P < 0.05). Immunoprecipitation analysis confirmed a direct interaction between LCN2 and EGFR. In comparison with the Model group, the Model + oe-LCN2 group demonstrated elevated levels of p-EGFR and the p-EGFR/EGFR ratio (P < 0.05), while no significant change was observed in total EGFR expression (P > 0.05). Conclusion Inhibition of LCN2-mediated EGFR phosphorylation enhances cell viability, reduces apoptosis, and mitigates inflammatory responses, thereby ameliorating LPS-induced inflammatory injury in human fallopian tube epithelial cells.

Key words: LCN2, inflammatory damage of human fallopian tube epithelial cells, EGFR, EGFR phosphorylation

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