吉林大学学报(医学版) ›› 2024, Vol. 50 ›› Issue (5): 1235-1242.doi: 10.13481/j.1671-587X.20240506

• 基础研究 • 上一篇    

玉竹多糖对顺铂诱导小鼠急性肾损伤的作用及其铁死亡机制

姜方阳1,肖静1,2,昌贺1,孙铭阳1,张文静1,律广富3,林贺1,林喆1,黄晓巍1,4(),王雨辰1()   

  1. 1.长春中医药大学药学院临床药学与中药药理教研室, 吉林 长春 130117
    2.中国医学科学院药用植物研究所, 北京 100094
    3.长春中医药大学吉林省人参研究科学院中药药理组, 吉林 长春 130117
    4.长春中医药大学东北亚中医药研究院基础研究所, 吉林 长春 130117
  • 收稿日期:2023-11-15 出版日期:2024-09-28 发布日期:2024-10-12
  • 通讯作者: 黄晓巍,王雨辰 E-mail:15948000740@163.com;wangyc01@ccucm.edu.cn
  • 作者简介:姜方阳(1998-),男,河南省南阳市人,在读硕士研究生,主要从事心血管和内分泌药理学方面的研究。
  • 基金资助:
    吉林省科技厅科技发展计划项目(20210204014YY);吉林省科技厅青年成长科技计划项目(20210508001RQ);吉林省教育厅科技一般项目(JJKH20210975KJ);吉林省发改委创新能力建设项目(2021C011)

Effect of polygonatum odoratum polysaccharide on acute kidney injury in mice induced by cisplatin and its ferroptosis mechanism

Fangyang JIANG1,Jing XIAO1,2,He CHANG1,Mingyang SUN1,Wenjing ZHANG1,Guangfu LYU3,He LIN1,Zhe LIN1,Xiaowei HUANG1,4(),Yuchen WANG1()   

  1. 1.Department of Clinical Pharmacy and Pharmacology of Chinese Medicine,School of Pharmacy,Changchun University of Chinese Medicine,Changchun 130117,China
    2.Institute of Medicinal Plant,Chinese Academy of Medical Sciences,Beijing 100094,China
    3.Department of Pharmacology of Chinese Medicine,Jilin Ginseng Academy,Changchun University of Chinese Medicine,Changchun 130117,China
    4.Basic Research Institute,Northeast Asia Institute of Chinese Medicine,Changchun University of Chinese Medicine,Changchun 130117,China
  • Received:2023-11-15 Online:2024-09-28 Published:2024-10-12
  • Contact: Xiaowei HUANG,Yuchen WANG E-mail:15948000740@163.com;wangyc01@ccucm.edu.cn

摘要:

目的 探讨玉竹多糖(POP)对顺铂诱导的急性肾损伤(AKI)模型小鼠的作用,并阐明其可能的作用机制。 方法 40只雄性C57BL/6小鼠随机分为对照组、模型组、POP组和铁死亡诱导剂Erastin联合POP组(Erastin+POP组),每组10只。POP组和Erastin+POP组小鼠灌胃POP(400 mg·kg-1),第7天时,模型组、POP组和Erastin+POP组小鼠均腹腔注射顺铂(20 mg·kg-1)制备AKI模型,对照组小鼠腹腔注射等体积生理盐水,Erastin+POP组小鼠提前1 d(即实验第6天)腹腔注射Erastin(40 mg·kg-1)。9 d后处死小鼠,收集血清和肾组织,试剂盒检测各组小鼠血清肌酐(Scr)和血尿素氮(BUN)水平及肾组织中丙二醛(MDA)和还原型谷胱甘肽(GSH)水平,HE染色观察各组小鼠肾组织病理形态表现,免疫组织化学染色法检测各组小鼠肾组织中铁死亡抑制蛋白1(FSP1)、铁蛋白重链1(FTH1)和谷胱甘肽过氧化物酶4(GPX4)蛋白表达水平,Western blotting法检测各组小鼠肾组织中肾脏核因子E2相关因子2(Nrf2)和血红素氧合酶1(HO-1)蛋白表达水平。 结果 与对照组比较,模型组小鼠血清中Scr和BUN水平均明显升高(P<0.01),肾组织中MDA水平明显升高(P<0.01),GSH水平明显降低(P<0.01);多数肾小管管腔扩张,上皮细胞肿胀,空泡变性,上皮细胞脱落,管腔内可见蛋白样管型;肾组织中FSP1、FTH1、GPX4、Nrf2和HO-1蛋白表达水平降低(P<0.05或P<0.01)。与模型组比较,POP组小鼠血清中Scr和BUN水平均明显降低(P<0.01),肾组织中MDA水平降低(P<0.01),GSH水平升高(P<0.01);肾小管管腔扩张,上皮细胞肿胀,空泡变性,上皮细胞脱落均有减少;肾组织中FSP1、FTH1、GPX4、Nrf2和HO-1蛋白表达水平升高(P<0.05或P<0.01)。与POP组比较,Erastin+POP组小鼠血清中Scr和BUN水平均明显升高(P<0.01),肾组织中MDA水平明显升高(P<0.05),GSH水平明显降低(P<0.01);肾组织病理损伤明显加重;肾组织中FSP1、FTH1、GPX4、Nrf2和HO-1蛋白表达水平降低(P<0.05或P<0.01)。 结论 POP可减轻顺铂诱导的小鼠AKI,其机制可能与POP抑制顺铂引起的铁死亡有关。

关键词: 玉竹多糖, 顺铂, 急性肾损伤, 铁死亡, 肾脏核因子E2相关因子2

Abstract:

Objective To discuss the protective effect of polygonatum odoratum polysaccharide (POP) on the mice with cisplatin-induced acute kidney injury(AKI), and to clarify its possible mechanism. Methods Forty male C57BL/6 mice were randomly divided into control group, model group, POP group,and ferroptosis inducer Erastin combined with POP(Erastin+POP) group,and there were 10 mice in each group.The mice in POP group and Erastin+POP group were given intragastric administration of POP (400 mg·kg-1), and on the 7th day,the mice in model group, POP group, and Erastin+POP group were intraperitoneally injected with cisplatin (20 mg·kg-1) to establish the AKI models,the mice in control group were injected with the same volume of normal saline, and the mice in Erastin+POP group were intraperitoneally injected with Erastin (40 mg·kg-1) one day in advance (on the 6th day of the experiment). After 9 d, the mice were killed and the serum and kidney tissue were collected, and the levels of serum creatinine (Scr) and blood urea nitrogen (BUN) and the levels of malondialdehyde (MDA) and glutathione (GSH) in kidney tissue of the mice in various groups were detected by kit; HE staining was used to observe the pathomorphology of kidney tissue of the mice in various groups; the expression levels of ferroptosis suppressor protein 1 (FSP1), ferritin heavy chain 1 (FTH1), and glutathione peroxidase 4 (GPX4) proteins in kidney tissue of the mice in various groups were detected by immunohistochemistry; Western blotting method was used to detect the expression levels of nuclear factor-E2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) proteins in kidney tissue of the mice in various groups. Results Compared with control group, the levels of Scr and BUN of the mice in model group were significantly increased (P<0.01), the level of MDA in kidney tissue was significantly increased (P<0.01), and the level of GSH was significantly decreased (P<0.01); most kidney tubules were dilated, the epithelial cells were swollen,the vacuolar degeneration and epithelial cells fell off, and the protein-like tubules could be seen in the lumen; the expression levels of FSP1, FTH1, GPX4, Nrf2, and HO-1 proteins in kidney tissue were decreased significantly (P<0.05 or P<0.01). Compared with model group, the levels of Scr and BUN of the mice in POP group were significantly decreased (P<0.01), the level of MDA in kidney tissue was significantly decreased (P<0.01), and the level of GSH was significantly increased (P<0.01); the dilatation of kidney tubular lumen, epithelial cell swelling, vacuolar degeneration,and epithelial cell exfoliation were decreased; the expression levels of FSP1, FTH1, GPX4, Nrf2,and HO-1 proteins in kidney tissue of the mice in POP group were significantly increased (P<0.05 or P<0.01). Compared with POP group, the levels of Scr and BUN of the mice in Erastin +POP group were significantly increased (P<0.01), the level of MDA in kidney tissue was increased (P<0.05), and the level of GSH was significantly decreased (P<0.01); the pathological injury of kidney tissue was aggravated obviously; the expression levels of FSP1, FTH1, GPX4, Nrf2, and HO-1 proteins in kidney tissue were significantly decreased (P<0.05 or P<0.01). Conclusion POP can reduce the AKI in the mice induced by cisplatin, and its mechanism may be related to the inhibitory effect of POP on the ferroptosis induced by cisplatin.

Key words: Polygonatum odoratum polysaccharide, Cisplatin, Acute kidney injury, Ferroptosis, Nuclear factor-E2-related factor 2

中图分类号: 

  • R285.5