中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (13): 1988-1992.doi: 10.3969/j.issn.2095-4344.2194

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

淫羊藿苷对骨髓间充质干细胞铁死亡及向心肌样细胞分化的影响

李  琦1,孙贵才2   

  1. 1哈尔滨医科大学附属肿瘤医院,黑龙江省哈尔滨市   150000;2南昌大学第一附属医院,江西省南昌市   330003
  • 收稿日期:2020-04-28 修回日期:2020-04-30 接受日期:2020-05-28 出版日期:2021-05-08 发布日期:2020-12-28
  • 通讯作者: 孙贵才,博士,主任中医师,南昌大学第一附属医院,江西省南昌市 330003
  • 作者简介:Li Qi, Physician, Harbin Medical University Cancer Hospital, Harbin 150000, Heilongjiang Province, China
  • 基金资助:
    国家自然科学基金(81960881,81660801),项目负责人:孙贵才

Effect of icaritin on ferroptosis of bone marrow mesenchymal stem cells and their differentiation into cardiomyocytes

Li Qi1, Sun Guicai2   

  1. 1Harbin Medical University Cancer Hospital, Harbin 150000, Heilongjiang Province, China; 2First Affiliated Hospital of Nanchang University, Nanchang 330003, Jiangxi Province, China
  • Received:2020-04-28 Revised:2020-04-30 Accepted:2020-05-28 Online:2021-05-08 Published:2020-12-28
  • Contact: Sun Guicai, MD, Chief TCM physician, First Affiliated Hospital of Nanchang University, Nanchang 330003, Jiangxi Province, China
  • About author:Sun Guicai, MD, Chief TCM physician, First Affiliated Hospital of Nanchang University, Nanchang 330003, Jiangxi Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81960881, No. 81660801 (to SGC)

摘要:

文题释义:
铁死亡:一种新的细胞死亡方式,是在小分子物质诱导下发生的氧化性细胞死亡,具有铁离子依赖性,其发生是细胞内脂质活性氧生成与降解平衡失调所致。
膜铁转运蛋白:是目前已知的唯一的铁转出蛋白,当铁调素与其结合后膜铁转运蛋白发生内陷和降解,导致细胞内的铁离子释放减少。

背景:研究报道铁蓄积或者铁过载与骨髓间充质干细胞增殖、凋亡息息相关,在心血管疾病发病过程中可能发挥重要作用。
目的:探讨淫羊藿苷对骨髓间充质干细胞铁死亡的调节作用及向心肌样细胞分化的影响。
方法:以骨髓间充质干细胞为研究对象,空白组正常培养14 d,模型组用0.4 μmol/L Erastin干预14 d建立铁死亡模型,治疗组加入80 nmol/L淫羊藿苷同时加入0.4 μmol/L Erastin共同干预14 d。采用CCK-8法检测各组细胞增殖情况,相关试剂盒检测各组细胞丙二醛和超氧化物歧化酶水平,Western blot检测TFR1、FPN1及Bcl-2、Bax蛋白表达,RT-PCR检测心肌细胞分化相关标记物GATA4、cTnT的mRNA表达。
结果与结论:①与模型组比较,治疗组细胞增殖能力显著提高(P < 0.05);②与模型组比较,治疗组骨髓间充质干细胞裂解液中丙二醛水平显著降低(P < 0.05),而超氧化物歧化酶水平显著提高(P < 0.05);③与模型组比较,治疗组TFR1蛋白表达降低(P < 0.05),FPN1蛋白表达升高(P < 0.05),Bcl-2/Bax蛋白表达比值显著升高(P < 0.05);④与模型组比较,治疗组GATA4、cTnT mRNA表达显著升高(P < 0.05);⑤结果表明,淫羊藿苷能够抑制骨髓间充质干细胞铁死亡,还可以提高骨髓间充质干细胞向心肌样细胞分化的能力。

https://orcid.org/0000-0002-1515-9378(孙贵才) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 干细胞, 骨髓间充质干细胞, 淫羊藿苷, 铁死亡, 脂质过氧化, 心肌细胞, 实验

Abstract: BACKGROUND: Iron accumulation or iron overload is closely related to the proliferation and apoptosis of bone marrow mesenchymal stem cells, which may play an important role in the pathological process of cardiovascular diseases.
OBJECTIVE: To investigate the regulatory effect of icariin on ferroptosis of bone marrow mesenchymal stem cells and its differentiation into cardiomyocytes. 
METHODS:  Taking bone marrow mesenchymal stem cells as the research object, the blank group was cultured for 14 days. The model group was treated with  0.4 μmol/L Erastin for 14 days to establish ferroptosis model. The treatment group was treated with 80 nmol/L icariin and 0.4 μmol/L Erastin for 14 days. CCK-8 method was used to detect the proliferation of cells in each group, and the levels of malondialdehyde and superoxide dismutase were detected by related kits. Western blot assay was used to detect the expression of TFR1, FPN1, Bcl-2 and Bax protein. RT-PCR was used to detect the mRNA expression of GATA4 and cTnT. 
RESULTS AND CONCLUSION: (1) Compared with the model group, the cell proliferation ability of the treatment group was significantly improved (P < 0.05). (2) Compared with the model group, the level of malondialdehyde in the lysate of bone marrow mesenchymal stem cells in the treatment group was significantly lower (P < 0.05), while the level of superoxide dismutase was significantly increased (P < 0.05). (3) Compared with the model group, TFR1 protein expression was decreased (P < 0.05), FPN1 protein expression was increased (P < 0.05), and Bcl-2/Bax protein expression ratio was increased significantly (P < 0.05) in the treatment group. (4) Compared with the model group, the expression of GATA4 and cTnT mRNA was significantly increased in the treatment group (P < 0.05). (5) The results showed that icariin could inhibit the ferroptosis of bone marrow mesenchymal stem cells and improve the ability of bone marrow mesenchymal stem cells to differentiate into cardiomyocyte-like cells.  

Key words: stem cells, bone marrow mesenchymal stem cells, icariin, ferroptosis, lipid peroxidation, cardiomyocytes, experiment

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