中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (30): 4862-4866.doi: 10.12307/2022.767

• 牙髓及牙周膜干细胞 Dental pulp and periodontal ligament stem cells • 上一篇    下一篇

转化生长因子β3与骨形成蛋白2对牙髓干细胞增殖和成骨分化的影响

艾力麦尔旦·艾尼瓦尔1,木合塔尔·霍加2,王  玲1   

  1. 1新疆医科大学第一附属医院(附属口腔医院)口腔外科门诊,新疆维吾尔自治区乌鲁木齐市   830011; 2深圳市罗湖区人民医院·深圳大学附属第三医院口腔中心,广东省深圳市   518001
  • 收稿日期:2021-09-09 接受日期:2021-11-04 出版日期:2022-10-28 发布日期:2022-03-29
  • 通讯作者: 王玲,主任医师,副教授,硕士生导师,新疆医科大学第一附属医院(附属口腔医院)口腔外科门诊,新疆维吾尔自治区乌鲁木齐市 830011
  • 作者简介:艾力麦尔旦·艾尼瓦尔,男,1992年生,维吾尔族,2019年新疆医科大学口腔医学院毕业,硕士,医师,主要从事牙槽外科及口腔种植方面的研究。
  • 基金资助:
    国家自然科学基金(81560180),项目负责人:木合塔尔·霍加

Effect of transforming growth factor-beta 3 and bone morphogenetic protein-2 on proliferation and osteogenic differentiation of dental pulp stem cells

Ailimaierdan·Ainiwaer1, Muhetaer·Huojia2, Wang Ling1    

  1. 1Department of Oral Surgery, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China; 2Oral Center, Shenzhen Luohu People’s Hospital, The Third Affiliated Hospital of Shenzhen University, Shenzhen 518001, Guangdong Province, China
  • Received:2021-09-09 Accepted:2021-11-04 Online:2022-10-28 Published:2022-03-29
  • Contact: Wang Ling, Chief physician, Associate professor, Master’s supervisor, Department of Oral Surgery, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • About author:Ailimaierdan·Ainiwaer, Master, Physician, Department of Oral Surgery, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81560180 (to MH)

摘要:

文题释义:
牙髓干细胞:通过酶解组织块法从新西兰大白兔前磨牙牙髓中获得的间充质来源成体干细胞,与颌面部诸骨有相同的胚胎学来源,具有多向分化潜能,冻存数年后仍保持良好的增殖和分化能力,是组织工程常用的可以建立细胞库的干细胞。
转化生长因子β3:是一类多效能生长因子,参与细胞增殖和分化等过程并发挥重要调控作用。

背景:转化生长因子β3与骨形成蛋白2对牙髓干细胞的增殖和成骨向分化能力对比相关研究甚少。
目的:探讨相同质量浓度转化生长因子β3与骨形成蛋白2对牙髓干细胞成骨向分化的作用及其初步机制。
方法:采用酶解组织块法从新西兰大白兔牙髓组织中分离培养牙髓干细胞;将第3代牙髓干细胞分为空白组、骨形成蛋白2(80 μg/L)组和转化生长因子β3(80 μg/L)组,采用MTT法检测各组细胞的增殖活力;培养第7,14天行碱性磷酸酶活性定量检测,Runt相关转录因子2、骨涎蛋白免疫细胞化学染色,RT-qPCR法检测成骨相关基因的表达;培养第14,21天进行茜素红染色观察矿化结节形成能力。
结果与结论:①骨形成蛋白2组和转化生长因子β3组的牙髓干细胞增殖活性、碱性磷酸酶活性均高于空白组(P < 0.05);转化生长因子β3组第7天碱性磷酸酶活性高于骨形成蛋白2组(P < 0.05);②转化生长因子β3组与骨形成蛋白2组Runt相关转录因子2、骨涎蛋白表达均高于空白组(P < 0.05),其中转化生长因子β3组第7天Runt相关转录因子2蛋白表达高于骨形成蛋白2组(P < 0.05);③转化生长因子β3组与骨形成蛋白2组碱性磷酸酶、Ⅰ型胶原A1、Runt相关转录因子2、骨钙蛋白、骨桥蛋白和Osx基因表达量高于空白组(P < 0.05),第7天转化因子β3组碱性磷酸酶、Ⅰ型胶原A1、Runt相关转录因子2基因的表达高于骨形成蛋白2组(P < 0.05);④转化生长因子β3组与骨形成蛋白2组矿化结节较空白组明显;⑤结果表明,转化生长因子β3与骨形成蛋白2均能促进牙髓干细胞增殖和成骨向分化;转化生长因子β3对牙髓干细胞成骨早期促进作用优于骨形成蛋白2。
缩略语:转化生长因子β3:transforming growth factor β3,TGF-β3;骨形成蛋白2:bone morphogenetic protein,BMP-2

https://orcid.org/0000-0002-7564-2169 (艾力麦尔旦·艾尼瓦尔) 

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: 转化生长因子β3, 骨形成蛋白2, 牙髓干细胞, 增殖, 成骨分化

Abstract: BACKGROUND: Less is reported about the effect of transforming growth factor-beta 3 and bone morphogenetic protein-2 on the proliferation and osteogenic differentiation of dental pulp stem cells.  
OBJECTIVE: To explore the effect of transforming growth factor-beta 3 and bone morphogenetic protein-2 on the osteogenic differentiation of dental pulp stem cells and its preliminary mechanism.
METHODS:  Dental pulp stem cells were isolated from the pulp tissue of New Zealand rabbit by the enzymatic digestion method. Dental pulp stem cells at passage 3 were divided into the blank group, bone morphogenetic protein-2 group (80 μg/L) and transforming growth factor-beta 3 group (80 μg/L). The cell proliferation activity in each group was tested by MTT assay. After 7 and 14 days of culture, alkaline phosphatase activities were measured. Runt-related transcription factor 2 and bone sialoprotein protein expression levels were conducted by immunocytochemical staining. Osteogenesis-related gene expression was tested through RT-qPCR method. Alizarin red S staining was conducted after 14 and 21 days of culture to observe mineralized nodules.  
RESULTS AND CONCLUSION: (1) Dental pulp stem cell proliferation activity and alkaline phosphatase activity were higher in the bone morphogenetic protein-2 and transforming growth factor-beta 3 groups than those in the blank group (P < 0.05). The alkaline phosphatase activity of the transforming growth factor-beta 3 group on day 7 was higher than that of the bone morphogenetic protein-2 group (P < 0.05). (2) The expression levels of Runt-related transcription factor 2 and bone sialoprotein in the transforming growth factor-beta 3 group and the bone morphogenetic protein-2 group were higher than those in the blank group (P < 0.05). The protein expression of Runt-related transcription factor 2 in the transforming growth factor-beta 3 group on day 7 was higher than that in the bone morphogenetic protein-2 group (P < 0.05). (3) The expression levels of alkaline phosphatase, type I collagen A1, Runt-related transcription factor 2, osteocalcin, osteopontin and Osx genes in the transforming growth factor-beta 3 group and bone morphogenetic protein-2 group were higher than those in the blank group (P < 0.05). On day 7, the expression levels of alkaline phosphatase, type I collagen A1, and Runt-related transcription factor 2 genes of transforming growth factor-beta 3 group were higher than those of bone morphogenetic protein-2 group (P < 0.05). (4) The mineralized nodules in the transforming growth factor-beta 3 group and bone morphogenetic protein-2 group were more obvious than those in the blank group. (5) The results show that transforming growth factor-beta 3 and bone morphogenetic protein-2 can improve the proliferation and osteogenic differentiation of dental pulp stem cells. The osteogenic induction ability of transforming growth factor-beta 3 on dental pulp stem cells was better than that of bone morphogenetic protein-2 at the early stage of osteogenesis.

Key words: transforming growth factor-beta 3, bone morphogenetic protein-2, dental pulp stem cells, proliferation, osteogenic differentiation

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