河北医科大学学报 ›› 2021, Vol. 42 ›› Issue (8): 872-875,封三.doi: 10.3969/j.issn.1007-3205.2021.08.002

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CM-Dil标记对骨髓间充质干细胞的影响及其在大鼠阴道重建模型中的示踪

  

  1. 1.河北省石家庄市第四医院生殖医学中心,河北 石家庄 050011;2.湘雅常德医院妇产科,湖南 常德 415000;
    3.河北医科大学第二医院妇科,河北 石家庄 050000
  • 出版日期:2021-08-25 发布日期:2021-08-27
  • 作者简介:张宁(1983-),女,河北石家庄人,河北省家石庄市第四医院主治医师,医学博士,从事妇科疾病诊治研究。
  • 基金资助:
    国家自然科学基金资助项目(81471418);河北省医学科学研究重点课题计划(20201389)

Effect of CM-Dil labeling on bone marrow stromal stem cells and its tracking in rat model of vaginal reconstruction

  1. 1.Department of Reproductive Medicine, the Fourth Hospital of Shijiazhuang City, Hebei Province, 
    Shijiazhuang 050011, China; 2.Department of Obstetrics and Gynecology, the Xiangya 
    Changde Hospital, Hunan Province, Changde 415000, China; 3.Department of Obstetrics 
    and Gynecology, the Second Hospital of Hebei Medical University, 
    Shijiazhuang 050000, China
  • Online:2021-08-25 Published:2021-08-27

摘要: 目的  探讨骨髓间充质干细胞(bone marrow stem cells,BMSCs)氯甲基苯甲酰胺(chloromethyl-benzamidodialkylcarbocyanine,CM-DiI)标记的效果及其标记后在大鼠阴道重建模型中的示综。
方法  全骨髓贴壁培养法培养大鼠BMSCs。用不同浓度的CM-Dil标记液标记BMSCs,观察不同浓度标记下BMSCs的标记效率和增殖能力。BMSCs与小肠黏膜下基质(small intestinal submucosa,SIS)复合后构建大鼠阴道重建模型,观察干细胞在重建阴道的示综。
结果  CM-DiI标记后各浓度的标记效率都可达98%以上,但荧光强度随浓度的增加而变强。2.5 μmol/L及5 μmol/L标记后的生长曲线与对照组无明显区别,10 μmol/L及20 μmol/L标记后生长曲线较对照组稍降低。BMSCs移植后主要分布在阴道深层组织中,术后3个月仍可见橙黄色的BMSCs。
结论  CM-DiI标记对干细胞活性影响小,5 μmol/L可能是最佳的标记浓度,BMSCs移植后3个月仍可见橙黄色的BMSCs,可用于后期进一步研究。


关键词: 苯甲酰胺类, 间质干细胞, 阴道

Abstract: Objective  To explore the effect of chloromethyl-benzamidodialkylcarbocyanine(CM-Dil) labeling on bone marrow stromal stem cells(BMSCs) and its tracking in rat model of vaginal reconstruction. 
Methods  Rat BMSCs were prepared with the whole bone marrow adherent method. BMSCs were labeled with different concentrations of CM-Dil and their labeling efficiency and reproductive activities were observed. The rat model of vaginal reconstruction was established with BMSCs seeded on small intestinal submucosal matrix(SIS). Its tracking in rat model of vaginal reconstruction was observed. 
Results  BMSCs could be labeled with different concentrations of CM-Dil and the labeled efficiency was>98%, but the fluorescence intensity became stronger with the increase of concentration. The growth curves after labeling with the concentration of 2.5 μmol/L and 5 μmol/L were not significantly different from those of the control group, and the growth curves after labeling with 10 μmol/L and 20 μmol/L were slightly lower than those of the control group. After transplantation, BMSCs were mainly distributed in the deep vaginal tissues, and orange BMSCs could be found at 3 months after vaginal reconstruction. 
Conclusion  CM-Dil did not affect stem cell activity, and 5 μmol/L may be the optimal labeling concentration. Orange BMSCs could be found at 3 months after vaginal reconstruction and could be used in further study.


Key words: benzamides,  , mesenchymal stem cells, vagina