中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (25): 3974-3980.doi: 10.12307/2024.188

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

补肾活血方促进脂肪间充质干细胞类髓核分化的作用机制

郭泽华1,2,李兆勇2,陈  龙2,段嘉豪1,2,蒋浩波1,2,陈光学1,2,苏友贤1,2,刘恩旭1,2,杨少锋2   

  1. 1湖南中医药大学,湖南省长沙市   410208;2湖南中医药大学第一附属医院,湖南省长沙市   410007
  • 收稿日期:2023-07-10 接受日期:2023-08-09 出版日期:2024-09-08 发布日期:2023-11-23
  • 通讯作者: 杨少锋,博士,主任医师,湖南中医药大学第一附属医院,湖南省长沙市 410007
  • 作者简介:郭泽华,男,1997年生,湖南省郴州市人,汉族,在读硕士,主要从事脊柱与脊髓损伤方面的研究。
  • 基金资助:
    国家自然科学基金(82174402),项目负责人:杨少锋;湖南省自然科学基金(2023JJ40504),项目负责人:李兆勇;长沙市自然科学基金(kq2208203),项目负责人:李兆勇;湖南中医药大学校级科研基金与联合基金(2021XJJJ041),项目负责人:陈龙

Action mechanism of Bushenhuoxue decoction on promoting nucleus pulposus-like differentiation of adipose-derived stem cells

Guo Zehua1, 2, Li Zhaoyong2, Chen Long2, Duan Jiahao1, 2, Jiang Haobo1, 2, Chen Guangxue1, 2, Su Youxian1, 2, Liu Enxu1, 2, Yang Shaofeng2   

  1. 1Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China; 2First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, Hunan Province, China
  • Received:2023-07-10 Accepted:2023-08-09 Online:2024-09-08 Published:2023-11-23
  • Contact: Yang Shaofeng, PhD, Chief physician, First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, Hunan Province, China
  • About author:Guo Zehua, Master candidate, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China; First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, Hunan Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 82174402 (to YSF); Hunan Provincial Natural Science Foundation, No. 2023JJ40504 (to LZY); Changsha Natural Science Foundation, No. kq2208203 (to LZY); Hunan University of Chinese Medicine School-Level Scientific Research Fund and Joint Fund, No. 2021XJJ041 (to CL)

摘要:


文题释义:

间充质干细胞:在一定条件下能够分化为椎间盘细胞,同时分泌多种营养因子,促进组织稳态以及免疫调节,这些特性对于促进椎间盘组织修复具有重要意义。
细胞共培养:采用Transwell小室将2种细胞进行非接触式共培养,小室允许细胞培养液及细胞因子在上、下两层之间进行交换,并且能够防止大分子物质通过,可方便观察细胞的生长状态及检测相关蛋白的表达水平。


背景:干细胞移植是防治椎间盘退变的新思路,但移植后的干细胞如何顺利存活、增殖、分化,并恢复髓核细胞功能,是目前亟需克服的重点和难点。

目的:探讨补肾活血方对脂肪间充质干细胞存活、增殖、类髓核分化的影响。
方法:采用Transwell小室构建人脂肪间充质干细胞和人退变髓核细胞共培养模型。实验分为对照组、模型组、含药血清组、无药血清组,除对照组外,其余各组均用50 μmol/L叔丁基过氧化氢干预24 h,然后含药血清组和无药血清组分别予以含体积分数20%补肾活血方含药血清或无药血清的DMEM低糖完全培养液干预48 h,取下层脂肪间充质干细胞,甲苯胺蓝染色法观察蛋白聚糖合成水平,Real-Time PCR法检测Ⅱ型胶原、蛋白聚糖、SOX9的mRNA表达,Western blot法检测SOX9的蛋白表达,乳酸脱氢酶法检测细胞毒性,流式细胞术检测细胞活性氧水平,β-半乳糖苷酶染色检测细胞衰老情况。

结果与结论:①与对照组相比,模型组坏死脱落细胞比例增加,甲苯胺蓝染色变浅,Ⅱ型胶原、蛋白聚糖、SOX9 mRNA和SOX9蛋白表达水平下降(P < 0.05);与模型组相比,补肾活血方含药血清可显著减轻细胞损伤并促进Ⅱ型胶原、蛋白聚糖、SOX9 mRNA和SOX9蛋白表达(P < 0.05),但无药血清组改善不明显(P > 0.05);②与对照组相比,模型组细胞毒性、活性氧水平、细胞衰老水平显著增加;与模型组相比,补肾活血方干预后共培养体系微环境得到明显改善(P < 0.05),无药血清对共培养体系微环境改善作用不明显(P > 0.05);③结果表明,补肾活血方可以促进脂肪间充质干细胞存活、增殖、类髓核分化。

https://orcid.org/0009-0003-8944-6411(郭泽华) 

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: 脂肪间充质干细胞, 髓核细胞, 共培养, 椎间盘退变, 补肾活血方, 氧化损伤

Abstract: BACKGROUND: Stem cell transplantation is a new way to prevent and cure intervertebral disc degeneration. However, whether the transplanted stem cells can survive, proliferate, differentiate, and restore the function of nucleus pulposus cells after transplantation, is the key and difficult point to overcome. 
OBJECTIVE: To explore the effects of Bushenhuoxue decoction on survival, proliferation, and nucleus pulposus-like differentiation of adipose-derived stem cells.
METHODS: A Transwell chamber was used to construct a co-culture model of human adipose-derived stem cells and human degenerative nucleus pulposus cells. The experiment was divided into control group, model group, drug-containing serum group, and drug-free serum group. Except for the control group, the co-culture system of other groups was treated with 50 μmol/L tert-butyl hydrogen peroxide for 24 hours. The drug-containing serum group and drug-free serum group were treated with DMEM low-glucose complete culture medium containing drug-containing serum of Bushenhuoxue decoction or drug-free serum with 20% volume fraction for 48 hours. The sublayer adipose-derived stem cells were taken. Toluidine blue staining was used to detect proteoglycan synthesis levels. Real-time PCR method was used to detect mRNA expression of type II collagen, proteoglycan and SRY-box transcription factor 9. The protein expression of SOX9 was detected by western blot assay. Lactate dehydrogenase assay was used to detect cytotoxicity. Flow cytometry was used to detect reactive oxygen species, and β-galactosidase staining was used to detect cell senescence. 
RESULTS AND CONCLUSION: (1) Compared with the control group, the proportion of necrotic cells in the model group increased; toluidine blue staining became lighter, and the expression levels of type II collagen, proteoglycan, SOX9 mRNA and SOX9 protein decreased (P < 0.05). Compared with the model group, the drug-containing serum of Bushenhuoxue decoction could significantly reduce cell injury and promote the expression of type II collagen, proteoglycan, SOX9 mRNA, and SOX9 protein (P < 0.05), but the improvement in the drug-free serum group was not significant (P > 0.05). (2) Compared with the control group, the contents of cytotoxicity, reactive oxygen species, and cell senescence in the model group were significantly increased. Compared with the model group, the microenvironment of the coculture system was significantly improved by drug-containing serum of Bushenhuoxue decoction (P < 0.05), while drug-free serum had no significant effect on the microenvironment of the co-culture system (P > 0.05). (3) The results show that Bushenhuoxue decoction can promote the survival, proliferation, and nucleus pulposus-like differentiation of adipose-derived stem cells.

Key words: adipose-derived stem cell, nucleus pulposus cell, co-culture, intervertebral disc degeneration, Bushenhuoxue decoction, oxidative damage

中图分类号: