中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (9): 1313-1318.doi: 10.3969/j.issn.2095-4344.1621

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

牛膝总皂苷调控Nampt/NAD/Sirt1轴诱导骨髓间充质干细胞向髓核样细胞分化

岳宗进,刘汝银,于 露,彭晓艳,鲁 花   

  1. 河南省中医院脊柱科,河南省郑州市 450000
  • 修回日期:2018-11-26 出版日期:2019-03-28 发布日期:2019-03-28
  • 通讯作者: 刘汝银,硕士,副主任医师,河南省中医院脊柱科,河南省郑州市 450000
  • 作者简介:岳宗进,男,1979年生,河南省台前县人,汉族,2009年河南中医药大学毕业,硕士,主治医师,主要从事脊柱相关疾病的临床与科研研究。
  • 基金资助:

    河南省中医药科学研究专项课题(2016ZY2001),项目负责人:刘汝银

Differentiation of bone marrow mesenchymal stem cells into nucleus pulposusk-like cells induced by Nampt/NAD/Sirt1 axis of Achyranthes bidentata Bl. saponins

Yue Zongjin, Liu Ruyin, Yu Lu, Peng Xiaoyan, Lu Hua   

  1. Department of Spine, Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Revised:2018-11-26 Online:2019-03-28 Published:2019-03-28
  • Contact: Liu Ruyin, Master, Associate chief physician, Department of Spine, Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • About author:Yue Zongjin, Master, Attending physician, Department of Spine, Henan Province Hospital of Traditional Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Supported by:

    the Special Project of Traditional Chinese Medicine Research in Henan Province, No. 2016ZY2001 (to LRY)

摘要:

文章快速阅读:

文题释义:
牛膝总皂苷:
牛膝类药材属于苋科多年生草本植物,具有补肝肾、强筋骨、逐瘀通经及引血下行的功效,其三萜皂苷类化合物是主要活性成分,具有抗骨质疏松、保护关节等药理作用。
Nampt/NAD/Sirt1轴:NAD+作为沉默信息调控因子Sirt1的激活物,其含量严格调控Sirt1的活性,与Sirt1的反应速率直接相关,进而影响细胞的增殖和分化。NAD+是NAM经由Nampt的催化作用合成,Nampt直接参与并限制NAD+合成,影响细胞内NAD+的含量。

 

摘要
背景:
研究表明,骨髓间充质干细胞可向髓核样细胞分化,但分化机制尚不明确。
目的:利用牛膝总皂苷诱导大鼠骨髓间充质干细胞向髓核样细胞分化,并探讨Nampt/NAD/Sirt1轴在其中的作用。  
方法:取第3代SD大鼠骨髓间充质干细胞,随机分成4组:①骨髓间充质干细胞组;②骨髓间充质干细胞+牛膝总皂苷组;③骨髓间充质干细胞+牛膝总皂苷+烟酰胺单核苷酸组(烟酰胺单核苷酸为促NAD合成的外源性小分子物质);④骨髓间充质干细胞+牛膝总皂苷+FK866组(FK866为烟酰胺磷酸核糖转移酶抑制剂)。连续诱导培养14 d,阿尔新蓝染色法检测细胞内糖胺多糖含量,RT-PCR检测髓核样细胞相关基因COL2、Aggrecan、KRT19和PAX1 mRNA表达,Western blot检测COL2的蛋白表达,Sirt1测定试剂盒检测Sirt1活性,NAD+/NADH试剂盒检测NAD+含量。
结果与结论:①与骨髓间充质干细胞组相比,骨髓间充质干细胞+牛膝总皂苷组能够使糖胺多糖、髓核样细胞相关基因表达、COL2蛋白表达、Sirt1活性、NAD+含量明显增加(P < 0.05);②与骨髓间充质干细胞+牛膝总皂苷组相比,骨髓间充质干细胞+牛膝总皂苷+烟酰胺单核苷酸组糖胺多糖、髓核样细胞相关基因表达、COL2蛋白表达、Sirt1活性和NAD+含量增加(P < 0.05);相反,骨髓间充质干细胞+牛膝总皂苷+FK866组上述指标均降低(P < 0.05);③结果表明,牛膝总皂苷可诱导大鼠骨髓间充质干细胞向髓核样细胞分化,Nampt/NAD/ Sirt1轴在其中发挥促进作用。


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:
0000-0001-5197-5850(岳宗进)

关键词: 骨髓间充质干细胞, 髓核样细胞, 牛膝总皂苷, 烟酰胺单核苷酸, 细胞分化

Abstract:

BACKGROUND: Studies have shown that bone marrow mesenchymal stem cells (BMSCs) can differentiate into nucleus pulposus-like cells, but the mechanism of differentiation is not clear.
OBJECTIVE: To induce bone BMSCs into nucleus pulposus-like cells using Achyranthes bidentata Bl. saponins (ABS) and to explore the role of Nampt/NAD/Sirt1 axis in the differentiation of BMSCs.
METHODS: BMSCs were collected from Sprague-Dawley rats. Cells at passage 3 were divided into four groups: BMSCs group, BMSCs+ABS group, BMSCs+ABS+nicotinamide mononucleotide (an exogenous small molecule substance promoting NAD synthesis) group, BMSCs+ABS+FK866 (nicotinamide phosphoribosyltransferase inhibitor) group, in which the cells were induced for 14 days. Alcian blue staining was used to show the changes of glycosaminoglycan in the cells. RT-PCR was used to detect the mRNA expression of COL2, Aggrecan, KRT19, Pax1. The protein expression level of COL2 was detected by western blot. The activity of Sirt1 was detected by Sirt1 assay kit and the content of NAD+ was measured by NAD+/NADH kit.
RESULTS AND CONCLUSION: (1) Compared with the BMSCs group, BMSCs+ABS group showed significant increases in the expression levels of glycosaminoglycan, Aggrecan, KRT19, and Pax1 (P < 0.05), and the protein expression levels of COL2, activity of Sirt1, and content of NAD+ were also significantly increased (all P < 0.05). (2) Compared with the BMSCs+ABS group, the above-mentioned indicators were significantly increased in the BMSCs+ABS+nicotinamide mononucleotide (P < 0.05); on the contrary, these indicators were all decreased significantly in the BMSCs+ABS+FK866 group (P < 0.05). To conclude, ABS could induce the differentiation of rat BMSCs into nucleus pulposus-like cells, in which the Nampt/NAD/Sirt1 axis might play a promotion role.

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: Bone Marrow, Mesenchymal Stem Cells, Lamiaceae, Nicotinamide Mononucleotide, Cell Differentiation, Tissue Engineering

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