吉林大学学报(医学版) ›› 2026, Vol. 52 ›› Issue (4): 1108-1115.doi: 10.13481/j.1671-587X.20260423

• 临床研究 • 上一篇    

人子痫前期产妇胎盘组织及缺氧、爱拉斯汀处理的人滋养细胞中PCBP1、FTH1和GPX4蛋白表达变化及其机制

刘甜娜,刘畅,李阳,吴富菊()   

  1. 吉林大学第二医院妇产科,吉林 长春 130041
  • 收稿日期:2025-01-08 接受日期:2026-05-06 出版日期:2026-07-28 发布日期:2026-07-27
  • 通讯作者: 吴富菊 E-mail:Wufj@jlu.edu.cn
  • 作者简介:刘甜娜(1999-),女,山东省滨州市人, 在读博士研究生,主要从事围产医学方面的研究。
  • 基金资助:
    吉林省科技厅发展计划项目(20230508077RC)

Expression changes of PCBP1, FTH1, and GPX4 proteins in placental tissue from postpartum women with preeclampsia and human trophoblast cells after treated with hypoxia and erastin and their mechanisms

Tianna LIU,Chang LIU,Yang LI,Fuju WU()   

  1. Department of Gynecology and Obstetrics,Second Hospital,Jilin University,Changchun 130041,China
  • Received:2025-01-08 Accepted:2026-05-06 Online:2026-07-28 Published:2026-07-27
  • Contact: Fuju WU E-mail:Wufj@jlu.edu.cn

摘要:

目的 探讨人子痫前期(PE)产妇胎盘组织和缺氧及爱拉斯汀处理的人滋养细胞HTR-8/SVneo中多聚(rC)结合蛋白1(PCBP1)、铁蛋白重链1(FTH1)和谷胱甘肽过氧化物酶4(GPX4)蛋白表达变化,并阐明其机制。 方法 收集PE(PE组)和正常妊娠(正常组)产妇的胎盘组织各12例。采用透射电镜观察胎盘滋养细胞超微结构,免疫组织化学法和Western blotting法检测2组产妇胎盘组织中PCBP1和GPX4蛋白表达水平。采用不同浓度(0、5、10、20、40和80 μmol·L-1)爱拉斯汀处理HTR-8/SVneo细胞,细胞计数盒8(CCK-8)法检测细胞活性以筛选爱拉斯汀浓度。HTR-8/SVneo细胞分别给予正常环境(常氧组)、缺氧(<1% O?,24 h,缺氧组)和爱拉斯汀(0、20、40 μmol·L-1)处理,采用Western blotting法检测不同处理方式下细胞中PCBP1、FTH1和GPX4蛋白表达水平,Pearson相关分析法分析PE产妇胎盘组织中PCBP1蛋白表达水平与产妇收缩压和舒张压的相关性。 结果 与正常组比较,PE组产妇胎盘滋养细胞中线粒体超微结构出现明显损伤;PE组产妇胎盘组织中PCBP1蛋白表达水平升高(P<0.01),而GPX4蛋白表达水平降低(P<0.01)。与常氧组比较,缺氧组HTR-8/SVneo细胞中PCBP1和FTH1蛋白表达水平升高(P<0.05或P<0.01),GPX4蛋白表达水平降低(P<0.05)。与0 μmol·L-1爱拉斯汀组比较,20和40 μmol·L-1爱拉斯汀组细胞活性降低(P<0.05),40 μmol·L-1爱拉斯汀组细胞中PCBP1蛋白表达水平及20和40 μmol·L-1爱拉斯汀组细胞中FTH1蛋白表达水平升高(P<0.05),20和40 μmol·L-1爱拉斯汀组细胞中GPX4蛋白表达水平降低(P<0.01),但20 μmol·L-1组与40 μmol·L-1组爱拉斯汀组细胞中GPX4蛋白表达水平比较差异无统计学意义(P>0.05)。Pearson相关分析,PE产妇胎盘组织中PCBP1蛋白表达水平与产妇收缩压和舒张压均呈正相关关系(r=0.761 4,P<0.01; P=0.623 9,P<0.01)。 结论 PE蛋白胎盘组织中PCBP1蛋白表达升高,GPX4蛋白表达降低;缺氧及爱拉斯汀处理可诱导HTR-8/SVneo细胞中PCBP1和FTH1蛋白表达升高,GPX4蛋白表达降低,其机制可能与铁稳态失衡及抗氧化防线受损有关。

关键词: 子痫前期, 多聚(rC)结合蛋白1, 铁蛋白重链1, 谷胱甘肽过氧化物酶4, 铁死亡

Abstract:

Objective To discuss the expression changes of poly(rC)-binding protein 1 (PCBP1), ferritin heavy chain 1 (FTH1), and glutathione peroxidase 4 (GPX4) proteins in placental tissue from the postpartum women with preeclampsia (PE) and the human trophoblast cells HTR-8/SVneo after treated with hypoxia or erastin, and to clarify their mechanisms. Methods The placental tissues were collected from 12 postpartum women with PE (PE group) and 12 women with normal pregnancy (normal group). Transmission electron microscope was used to observe the ultrastructures of placental trophoblasts; immunohistochemistry and Western blotting methods were used to detect the expression levels of PCBP1 and GPX4 proteins in placental tissue of the women in two groups. The HTR-8/SVneo cells were treated with different concentrations (0, 5, 10, 20, 40和80 μmol·L-1) of erastin, and cell counting kit-8 (CCK-8) method was used to measure the cell viabilities to screen the erastin concentration. The HTR-8/SVneo cells were exposed to normal enulorment(normoxia group), hypoxia (<1% O?, 24 h, hypoxia group) or erastin (0, 20, 40 μmol·L-1), and Western blotting method was used to detect the expression levels of PCBP1, FTH1 and GPX4 proteins in the cells under different treatments; Pearson correlation analysis was used to analyze the correlations between the expression level of PCBP1 protein in placental tissue of the postparum with PE and systolic and diastolic blood pressures. Results Compared with normal group, the placental trophoblasts in PE group showed obvious mitochondrial ultrastructural damage; the expression level of PCBP1 protein in placental tissue of the postpartum women PE group was increased (P<0.01), while the expression level of GPX4 protein was decreased (P<0.01). Compared with normoxia group, the expression levels of PCBP1 and FTH1 proteins in the HTR-8/SVneo cells in hypoxia group were increased (P<0.05 or P<0.01), and the expression level of GPX4 protein was decreased (P<0.05). Compared with 0 μmol·L-1 erastin group, the cell viabilities in 20 and 40 μmol·L-1 erastin groups were decreased (P<0.05), the expression level of PCBP1, protein in the cells in 40 μmol·L-1 erastin group and the expression levels of FTH1 proteins in the cells were increased (P<0.05), and the expression levels of GPX4 protein in the cells in 20 and 40 μmol·L-1 erastin groups were decreased (P<0.01), but the difference in GPX4 protein expression level between 20 μmol·L-1 erastin group and 40 μmol·L-1 erastin group was not statistically significant (P>0.05). The Pearson correlation analysis results showed that the expression level of PCBP1 protein in placental tissue of the postparum women was positively correlated with both systolic and diastolic blood pressure (r=0.761 4, P<0.01; P=0.623 9, P<0.01). Conclusion The PCBP1 protein expression is increased and the GPX4 protein expression is decreased in placental tissue of the postpartum woment with PE; hypoxia and erastin treatment can increase the expressions of PCBP1 and FTH1 protein and decrease the expression of GPX4 protein in the HTR-8/SVneo cells, and their mechanisms may be related to iron homeostasis imbalance and impaired antioxidant defense.

Key words: Preeclampsia, Poly(rC)-binding protein 1, Ferritin heavy chain 1, Glutathione Peroxidase 4, Ferroptosis

中图分类号: 

  • R714.24