中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (25): 3956-3960.doi: 10.3969/j.issn.2095-4344.1766

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

氯化锂促进骨髓间充质干细胞增殖分化的作用途径

付  殷1,孙贵才2,涂远青2,凌小鹏2
  

  1. 1黑龙江中医药大学,黑龙江省哈尔滨市  150036;2南昌大学第四附属医院骨科,江西省南昌市  330003
  • 修回日期:2019-02-16 出版日期:2019-09-08 发布日期:2019-09-08
  • 通讯作者: 孙贵才,博士,主任中医师,南昌大学第四附属医院骨科,江西省南昌市 330003
  • 作者简介:付殷,1985年生,辽宁省凌源市人,汉族,博士,中级研究员,主要从事方剂配伍规律相关研究。
  • 基金资助:

    国家自然科学基金项目(81473503),项目负责人:孙贵才

Lithium chloride promotes proliferation and differentiation of bone marrow mesenchymal stem cells via Wnt/beta-catenin signaling pathway

Fu Yin1, Sun Guicai2, Tu Yuanqing2, Ling Xiaopeng2
  

  1. 1Heilongjiang University of Traditional Chinese Medicine, Harbin 150036, Heilongjiang Province, China; 2Department of Orthopedics, Fourth Affiliated Hospital of Nanchang University, Nanchang 330003, Jiangxi Province, China
  • Revised:2019-02-16 Online:2019-09-08 Published:2019-09-08
  • Contact: Sun Guicai, MD, Chief physician, Department of Orthopedics, Fourth Affiliated Hospital of Nanchang University, Nanchang 330003, Jiangxi Province, China
  • About author:Fu Yin, MD, Intermediate researcher, Heilongjiang University of Traditional Chinese Medicine, Harbin 150036, Heilongjiang Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81473503 (to SGC)

摘要:

文章快速阅读:

文题释义:
氯化锂:
是糖原合成酶激酶3β的高度选择性抑制剂,通过抑制GSK-3β的活性,使Wnt/β-catenin的降解减少,激活Wnt/β-catenin信号途径。
Wnt信号通路:Wnts是由高度保守的分泌信号糖蛋白组成的家族,控制细胞增殖、分化、凋亡、存活和迁移。Wnt信号刺激可以促进骨髓间充质干细胞增殖及向成骨细胞分化,同时抑制其向成脂细胞分化。

 

摘要
背景:
寻找促进骨髓间充质干细胞增殖及向成骨细胞分化的方法,可以为治疗骨质疏松类疾病提供治疗思路。
目的:探讨氯化锂调控大鼠骨髓间充质干细胞增殖分化的机制。
方法:实验采用全骨髓细胞接种法和贴壁纯化培养大鼠骨髓间充质干细胞,分别给予0,2,5 nmol/L氯化锂进行干预;采用CCK-8法检测大鼠骨髓间充质干细胞的增殖情况,茜素红染色法检测钙化结节形成情况,PNPP法测定碱性磷酸酶活性,Western blot法检测大鼠骨髓间充质干细胞中GSK3β,p-GSK3β,β-catenin蛋白含量变化。
结果与结论:①2,5 nmol/L氯化锂均能促进大鼠骨髓间充质干细胞增殖,5 nmol/L氯化锂促增殖能力最强;②2,5 nmol/L氯化锂组矿化结节与碱性磷酸酶活性均比0 nmol/L氯化锂组明显,且5 nmol/L氯化锂促成骨分化更为显著;③2,5 nmol/L氯化锂能够显著增加p-GSK3β、β-catenin蛋白表达,而各组GSK3β蛋白表达差异无显著性意义;④结果表明,氯化锂能够促进大鼠骨髓间充质干细胞的增殖及向成骨细胞分化,其可能机制是通过调控Wnt/β-catenin信号通路相关蛋白表达实现的。


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
ORCID: 0000-0002-1515-9378(孙贵才)

关键词: 氯化锂, 骨髓间充质干细胞, 细胞增殖, 成骨分化, 钙化结节, 碱性磷酸酶活性, Wnt/β-catenin信号通路, 国家自然科学基金

Abstract:

BACKGROUND: Seeking proper methods to promote the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells can provide therapeutic ideas for the treatment of osteoporosis.
OBJECTIVE: To study the mechanism of lithium chloride on the proliferation and differentiation of rat bone marrow mesenchymal stem cells.
METHODS: Rat bone marrow mesenchymal stem cells were cultured with the whole bone marrow cell inoculation and adherent purification, followed by intervention with 0, 2, 5 nmol/L lithium chloride. Cell counting kit-8 was used to detect the effect of lithium chloride on the proliferation of bone marrow mesenchymal stem cells. Alizarin red staining was used to determine calcified nodules. PNPP method was applied to measure alkaline phosphatase activity. The contents of glycogen synthase kinase 3β, phosphorylated glycogen synthase kinase 3β and β-catenin in rat bone marrow mesenchymal stem cells were determined by western blot.
RESULTS AND CONCLUSION: Lithium chloride, 2 and 5 nmol/L, promoted the proliferation of bone marrow mesenchymal stem cells and
5 nmol/L lithium chloride had the strongest proliferative effect. Compared with 0 nmol/L group, more calcified nodules and higher alkaline phosphatase activity were observed in the 2 and 5 nmol/L groups, especially in the 5 nmol/L group. Both 2 and 5 nmol/L lithium chloride upregulated the expression of phosphorylated glycogen synthase kinase 3β and β-catenin proteins, but showed no difference in the expression of glycogen synthase kinase 3β. In conclusion, lithium chloride can promote the proliferation and osteogenic differentiation of rat bone marrow mesenchymal stem cells, and the possible mechanism is through the regulation of Wnt/β-catenin signaling pathway-related protein expression.

Key words: lithium chloride, bone marrow mesenchymal stem cells, cell proliferation, osteogenic differentiation, calcified nodules, alkaline phosphatase activity, Wnt/β-catenin signaling pathway, National Natural Science Foundation of China

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