中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (19): 4918-4925.doi: 10.12307/2026.693

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

过表达胶原三螺旋重复蛋白1促进人牙周膜干细胞的增殖和成骨分化

周  睿1,张雪松2,杨东红1,3,金轶男1,3,杨宇琦1,3,叶之慧1,3   

  1. 1佳木斯大学口腔医学院,黑龙江省佳木斯市  154000;2佳木斯大学附属第一医院,黑龙江省佳木斯市  154000;3佳木斯大学附属口腔医院正畸科,黑龙江省佳木斯市  154000
  • 收稿日期:2025-06-06 接受日期:2025-09-23 出版日期:2026-07-08 发布日期:2026-02-14
  • 通讯作者: 叶之慧,主任医师,教授,硕士生导师,佳木斯大学口腔医学院,黑龙江省佳木斯市 154000;佳木斯大学附属口腔医院正畸科,黑龙江省佳木斯市 154000
  • 作者简介:周睿,男,1998年生,黑龙江省伊春市人,佳木斯大学在读硕士,主要从事口腔组织再生方面的研究。
  • 基金资助:
    黑龙江省教育厅基本科研业务费基础研究项目(2022-KYYWF-0648),项目负责人:叶之慧

Overexpression of collagen triple helix repeat-containing protein 1 promotes proliferation and osteogenic differentiation of human periodontal ligament stem cells

Zhou Rui1, Zhang Xuesong2, Yang Donghong1, 3, Jin Yinan1, 3, Yang Yuqi1, 3, Ye Zhihui1, 3   

  1. 1Stomatology College of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China; 2First Affiliated Hospital, Jiamusi University, Jiamusi 154000, Heilongjiang Province, China; 3Department of Orthodontics, Affiliated Stomatological Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China
  • Received:2025-06-06 Accepted:2025-09-23 Online:2026-07-08 Published:2026-02-14
  • Contact: Ye Zhihui, Chief physician, Professor, Master’s supervisor, Stomatology College of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China; Department of Orthodontics, Affiliated Stomatological Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China
  • About author:Zhou Rui, Master candidate, Stomatology College of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China
  • Supported by:
    Research Operating Expenses Project Fund of Education Department of Heilongjiang Province, No. 2022-KYYWF-0648 (to YZH)

摘要:

文题释义:

胶原三螺旋重复蛋白1:是血管重构、成骨细胞形成和创伤修复的调节因子,与钙化组织的形成显著相关。
牙周膜干细胞:主要分布于牙周膜血管周围,具有多向分化潜能,经过适当的诱导可以向成骨细胞、脂肪细胞、神经细胞等方向分化,在组织再生领域具有广阔的应用前景。

摘要
背景:胶原三螺旋重复蛋白1是骨形成的正向调节因子,但是其在牙周膜干细胞中的作用及机制尚未明确。
目的:探讨胶原三螺旋重复蛋白1对人牙周膜干细胞增殖、成骨分化的影响及作用机制。
方法:体外分离培养人牙周膜干细胞,用过表达胶原三螺旋重复蛋白1慢病毒载体转染细胞,通过CCK-8法和流式细胞术检测过表达胶原三螺旋重复蛋白1对牙周膜干细胞增殖活性的影响;通过碱性磷酸酶活性、茜素红染色检测过表达胶原三螺旋重复蛋白1对牙周膜干细胞成骨分化能力的影响;采用Western blot检测过表达胶原三螺旋重复蛋白1后细胞外调节蛋白激酶1/2、磷酸化细胞外调节蛋白激酶1/2蛋白表达;采用Western blot和qRT-PCR检测阻断细胞外调节蛋白激酶1/2信号通路后,过表达胶原三螺旋重复蛋白1对牙周膜干细胞成骨分化相关因子Runt相关转录因子2、骨钙素、Osterix表达的影响。
结果与结论:①CCK-8和流式细胞术结果显示,过表达胶原三螺旋重复蛋白1能够促进牙周膜干细胞增殖;②碱性磷酸酶活性、茜素红染色显示,过表达胶原三螺旋重复蛋白1能够促进牙周膜干细胞的成骨分化;③Western blot结果显示,过表达胶原三螺旋重复蛋白1激活了细胞外调节蛋白激酶1/2信号通路;④Western blot和qRT-PCR结果显示,过表达胶原三螺旋重复蛋白1促进了Runt相关转录因子2、骨钙素、Osterix蛋白和mRNA的表达,当使用细胞外调节蛋白激酶信号通路特异性抑制剂PD98059抑制信号通路激活后,成骨相关因子表达上调出现了一定程度的抑制。以上结果提示:过表达胶原三螺旋重复蛋白1可以促进牙周膜干细胞的增殖和成骨分化,其促成骨分化作用可能与细胞外调节蛋白激酶1/2信号通路的激活有关。

关键词: 干细胞治疗, 牙周膜干细胞, 胶原三螺旋重复蛋白1(CTHRC1), 细胞增殖, 成骨分化, 细胞外调节蛋白激酶1/2(ERK1/2)

Abstract: BACKGROUND: Collagen triple helix repeat-containing protein 1 is a positive regulator of bone formation. However, its role and underlying mechanisms in periodontal ligament stem cells remain unclear.
OBJECTIVE: To investigate the effects of collagen triple helix repeat-containing protein 1 on the proliferation and osteogenic differentiation of periodontal ligament stem cells and its mechanism of action.
METHODS: Human periodontal ligament stem cells were isolated and cultured in vitro, and the cells were transfected with a overexpressed collagen triple helix repeat-containing protein 1 lentiviral vector. The effect of overexpression of collagen triple helix repeat-containing protein 1 on the proliferation activity of periodontal ligament stem cells was determined by CCK-8 assay and flow cytometry. The effect of overexpression of collagen triple helix repeat-containing protein 1 on the osteogenic differentiation of periodontal ligament stem cells was determined by alkaline phosphatase activity and Alizarin red staining. Western blot assay was used to determine the expression of extracellular regulated protein kinase 1/2 and phosphorylated extracellular regulated protein kinase 1/2 after overexpression of collagen triple helix repeat-containing protein 1. Western blot assay and qRT-PCR were used to determine the effect of overexpression of collagen triple helix repeat-containing protein 1 on the expression of osteogenic differentiation-related factors Runt-related transcription factor 2, osteocalcin, and Osterix in periodontal ligament stem cells after blocking the extracellular regulated protein kinase 1/2 signaling pathway.
RESULTS AND CONCLUSION: (1) CCK-8 assay and flow cytometry results showed that overexpression of collagen triple helix repeat-containing protein 1 promoted the proliferation of periodontal ligament stem cells. (2) Alkaline phosphatase activity and Alizarin red staining showed that overexpression of collagen triple helix repeat-containing protein 1 promoted the osteogenic differentiation of periodontal ligament stem cells. (3) Western blot assay results showed that overexpression of collagen triple helix repeat-containing protein 1 activated the extracellular regulated protein kinase 1/2 signaling pathway. (4) Western blot assay and qRT-PCR results showed that overexpression of collagen triple helix repeat-containing protein 1 promoted the expression of Runt-related transcription factor 2, osteocalcin, and Osterix protein and mRNA. When the extracellular regulated protein kinase signaling pathway-specific inhibitor PD98059 was used to inhibit signaling pathway activation, the upregulation of osteogenic-related factors was suppressed to a certain extent. These results suggest that overexpression of collagen triple helix repeat-containing protein 1 can promote the proliferation and osteogenic differentiation of periodontal ligament stem cells, and its osteogenic differentiation-promoting effect may be related to the activation of the extracellular regulated protein kinase 1/2 signaling pathway.

Key words: stem cell therapy, periodontal ligament stem cell, collagen triple helix repeat-containing protein 1 (CTHRC1), cell proliferation, osteogenic differentiation, extracellular regulated protein kinase 1/2 (ERK1/2)

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