中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 680-684.doi: 10.3969/j.issn.2095-4344.1613

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

基于雌激素受体研究氯化锂干预成骨细胞的分化及自噬

付 殷1,孙贵才2,陈水林2,樊祥伟2,彭宇飞3   

  1. 1黑龙江中医药大学,黑龙江省哈尔滨市 150000;2南昌大学第四附属医院骨科,湖北省南昌市 330003;3黑龙江中医药大学附属第一医院骨伤一科,黑龙江省哈尔滨市 150000
  • 修回日期:2018-11-23 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 孙贵才,博士,主任医师,南昌大学第四附属医院骨科,湖北省南昌市 330003
  • 作者简介:付殷,女,1985年生,辽宁省凌源市人,汉族,2015年黑龙江中医药大学毕业,博士,主要从事药理学研究。
  • 基金资助:

    国家自然科学基金(81473503),项目负责人:孙贵才

Lithium chloride increases differentiation and autophagy of osteoblasts inhibited by estrogen receptor

Fu Yin1, Sun Guicai2, Chen Shuilin2, Fan Xiangwei2, Peng Yufei3   

  1. 1Heilongjiang University of Chinese Medicine, Harbin 150000, Heilongjiang Province, China; 2Department of Orthopedics, the Fourth Affiliated Hospital of Nanchang University, Nanchang 330003, Hubei Province, China; 3Department of Orthopedics, the First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150000, Heilongjiang Province, China
  • Revised:2018-11-23 Online:2019-02-18 Published:2019-02-18
  • Contact: Sun Guicai, MD, Chief physician, Department of Orthopedics, the Fourth Affiliated Hospital of Nanchang University, Nanchang 330003, Hubei Province, China
  • About author:Fu Yin, MD, Heilongjiang University of Chinese Medicine, Harbin 150000, 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:
是白色的晶体,具有潮解性,味咸。易溶于水及乙醇、丙酮、吡啶等有机溶剂,具有低毒性。但对眼睛和黏膜具有强烈的刺激和腐蚀作用。氯化锂主要用于空气调节领域,用作助焊剂、干燥剂、化学试剂,并用于制焰火、干电池和金属锂等。近几年发现可作为临床候选药物用于治疗骨代谢类疾病。
自噬:是细胞非必须生理过程中产生的营养物质以供给细胞维持生存营养物质的过程,是细胞的一种自我保护方式。

 

摘要
背景:
临床应用锂治疗造血系统疾病和双极性疾病已经有数十年,并且发现锂可以直接刺激骨髓间充质干细胞的增殖。
目的:研究雌激素受体抑制下氯化锂对大鼠成骨细胞增殖分化及自噬的影响。
方法:实验选取10只出生72 h的SPF级SD乳鼠(由黑龙江中医药大学提供)。采用酶消化法和茜素红染色法获得和鉴定成骨细胞。取对数生长期成骨细胞,于培养基中加入不同浓度的氯化锂(0,1,2,5 nmol/L)处理24 h,采用CCK-8法检测各组细胞增殖情况。另取成骨细胞随机分为空白组(正常培养细胞)、抑制剂组(10-7 mol/L ICI182780)、治疗组(5 nmol/L氯化锂+10-7 mol /L ICI182780)。采用钙化结节染色及碱性磷酸酶活性检测各组成骨细胞分化情况;Western blot法测定各组成骨细胞中Beclin1和Runx2蛋白表达情况。
结果与结论:①倒置显微镜下观察细胞多为单核、多边形及梭形,局部有细胞密集的细胞团;②CCK-8法检测结果显示不同浓度的氯化锂都能对成骨细胞增殖产生促进作用,呈浓度依赖性;③茜素红染色结果显示与空白组比较,抑制剂组成骨细胞矿化能力明显降低,与抑制剂组比较,治疗组成骨细胞矿化结节能力明显增加(P < 0.05);活性测定结果显示与空白组比较,抑制剂组中碱性磷酸酶活性明显降低,与抑制剂组比较,治疗组中碱性磷酸酶活性明显增加(P < 0.05);④Western blot结果显示与空白组比较,抑制剂组中Beclin1和Runx2蛋白表达明显降低,与抑制剂组比较,治疗组中Beclin1和Runx2蛋白表达显著增加(P < 0.05);⑤结果提示,雌激素受体抑制下氯化锂可以提高大鼠成骨细胞增殖分化及自噬。


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, 骨质疏松, 成骨细胞增殖, 雌激素受体, 自噬, 茜素红染色, 成骨细胞矿化结节, 国家自然科学基金

Abstract:

BACKGROUND: Lithium has been used in the treatment of hematopoietic diseases and bipolar diseases for decades, and it can directly stimulate the proliferation of bone marrow mesenchymal stem cells.
OBJECTIVE: To investigate the effects of lithium chloride on the proliferation, differentiation and autophagy of rat osteoblasts inhibited by estrogen receptor.
METHODS: Ten neonatal Sprague-Dawley rats, 72 days old, SPF grade, were provided by the Heilongjiang University of Chinese Medicine. (1) Osteoblasts were isolated by enzymatic digestion and alizarin red staining, and logarithmically growing osteoblasts were then cultured in media containing different concentrations of lithium chloride (0, 1, 2, 5 nmol/L) for 24 hours. Cell proliferation was measured by cell counting kit-8. (2) Osteoblasts at logarithmical growth phase were randomly divided into blank group (normal cultured cells), inhibitor group (10-7 mol/L ICI182780), treatment group (5 nmol/L lithium chloride+10-7 mol/L ICI 182780). Calcified nodule staining and alkaline phosphatase activity were used to detect the differentiation of osteoblasts. Expression of Beclin1 and Runx2 in osteoblasts were determined by western blot.
RESULTS AND CONCLUSION: Under the inverted microscope, the cells were mostly mononuclear, polygonal and fusiform, with local cell-dense cell clusters. Results from the cell counting kit-8 assay showed that different concentrations of lithium chloride promoted the proliferation of osteoblasts in a concentration-dependent manner. Alizarin red staining results showed that the mineralization ability of osteoblasts was significantly reduced in the inhibitor group compared with the blank group, while compared with the inhibitor group, the mineralization ability of osteoblasts was increased significantly in the treatment group (P < 0.05). The activity of alkaline phosphatase was significantly reduced in the inhibitor group compared with the blank group, while compared with the inhibitory group, the activity of alkaline phosphatase increased significantly in the treatment group (P < 0.05). Western blot results showed that the expression of Beclin1 and Runx2 proteins in the inhibitor group decreased significantly compared with blank group, while compared with the inhibitor group, the expression of Beclin1 and Runx2 protein in the treatment group increased significantly (P < 0.05). In conclusion, lithium chloride can increase the proliferation, differentiation and autophagy of rat osteoblasts inhibited by estrogen receptor.


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

Key words: Lithium Chloride, Osteoblasts, Autophagy, Tissue Engineering

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