中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (17): 2673-2677.doi: 10.12307/2022.533

• 肌肉肌腱韧带组织构建 tissue construction of the muscle, tendon and ligament • 上一篇    下一篇

结缔组织生长因子对肌腱细胞Ⅰ、Ⅲ型胶原分泌的影响

王全震1,肖颖锋1,万圣祥1,张  建1,周  波1,孟繁斌1,于龙彪1,于  斐2,3   

  1. 北京大学深圳医院,1手显微外科,2骨关节科,广东省深圳市   518036;3骨科生物材料国家地方联合工程研究中心,广东省深圳市   518036
  • 收稿日期:2021-04-21 修回日期:2021-04-22 接受日期:2021-06-01 出版日期:2022-06-18 发布日期:2021-12-24
  • 通讯作者: 于斐,医师,博士,北京大学深圳医院骨关节科,广东省深圳市 518036;骨科生物材料国家地方联合工程研究中心,广东省深圳市 518036
  • 作者简介:王全震,男,1979年生,2006年华中科技大学同济医学院毕业,硕士,副主任医师,主要从事创伤骨科、周围神经损伤修复方面的研究。
  • 基金资助:
    广东省基础与应用基础研究基金(2021A1515012586,2019A1515110983),项目负责人:于斐;白求恩•石药骨质疏松科研基金项目(G-X-2020-1107-21),项目负责人:于斐

Effect of connective tissue growth factor on the secretion of type I and III collagen in tenocytes

Wang Quanzhen1, Xiao Yingfeng1, Wan Shengxiang1, Zhang Jian1, Zhou Bo1, Meng Fanbin1, Yu Longbiao1, Yu Fei2, 3   

  1. 1Department of Hand and Microsurgery, 2Department of Orthopedics and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China; 3National and Local Joint Engineering Research Center of Orthopedic Biomaterials, Shenzhen 518036, Guangdong Province, China
  • Received:2021-04-21 Revised:2021-04-22 Accepted:2021-06-01 Online:2022-06-18 Published:2021-12-24
  • Contact: Yu Fei, MD, Physician, Department of Orthopedics and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China; National and Local Joint Engineering Research Center of Orthopedic Biomaterials, Shenzhen 518036, Guangdong Province, China
  • About author:Wang Quanzhen, Master, Associate chief physician, Department of Hand and Microsurgery, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Supported by:
    Guangdong Provincial Basic and Applied Basic Research Foundation, Nos. 2021A1515012586 and 2019A1515110983 (both to YF); Osteoporosis Scientific Research and Development Fund of Bethune-China Shiyao Pharmaceutical Group Co., Ltd., No. G-X-2020-1107-21 (to YF)

摘要:

文题释义:
结缔组织生长因子:是由BRADHAM等在1991年从人脐静脉内皮细胞的条件培养基中获得的,该因子由349个氨基酸构成,分子质量为  34-38 kD,在细胞增殖、分化、迁移过程中起重要作用,与皮肤、血管、肝脏等组织的纤维化密切相关。
Ⅰ、Ⅲ型胶原:是肌腱细胞非常重要的细胞外基质,在人体中起到维持肌肉张力的作用,其中Ⅰ型胶原占肌腱细胞胶原的95%以及肌腱干质量的60%;Ⅲ型胶原排第二,位于正常肌腱鞘及病变肌腱中,也是肌腱愈合时分泌最多的胶原。

背景:肌腱断裂是骨科常见的棘手问题,而肌腱细胞中胶原分泌影响到肌腱断裂的修复过程,结缔组织生长因子影响组织器官的纤维化过程,对细胞胶原的分泌有重要的作用,但其对肌腱细胞胶原分泌的作用却鲜有报道。
目的:通过不同质量浓度的结缔组织生长因子刺激体外培养的原代鸡肌腱细胞,观察细胞中Ⅰ、Ⅲ型胶原的表达情况。
方法:选取8周来亨鸡6只,麻醉处死后取屈趾深肌腱行肌腱细胞原代培养,行Ⅰ、Ⅲ型胶原免疫荧光鉴定;取4代的原代肌腱细胞,通过不同质量浓度(0,5,10,20,50,100,200,500 μg/L)的结缔组织生长因子刺激4 d,分别行实时荧光定量PCR及酶联免疫吸附测定法检测不同组别肌腱细胞中Ⅰ、Ⅲ 型胶原mRNA及蛋白的表达情况。
结果与结论:①Ⅰ、Ⅲ型胶原免疫荧光鉴定原代培养的细胞为肌腱细胞;②实时荧光定量PCR检测提示结缔组织生长因子刺激后肌腱细胞中Ⅰ、Ⅲ型胶原mRNA的表达量均增加;③酶联免疫吸附测定法检测提示结缔组织生长因子刺激后肌腱细胞中Ⅰ、Ⅲ型胶原蛋白的表达量均增加(P < 0.01),且两者均随结缔组织生长因子质量浓度的升高而逐渐增高,20 μg/L及50 μg/L的结缔组织生长因子可能是体外刺激肌腱细胞分别生成Ⅰ、Ⅲ型胶原的最佳作用浓度;④在一定范围内,结缔组织生长因子能够促进鸡原代肌腱细胞中Ⅰ、Ⅲ型胶原的分泌。
缩略语:结缔组织生长因子:connective tissue growth factor,CTGF;酶联免疫吸附测定:enzyme linked immunosorbent assay,ELISA

https://orcid.org/0000-0003-3734-4563 (王全震) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 结缔组织生长因子, 肌腱细胞, Ⅰ型胶原, Ⅲ型胶原, 细胞实验

Abstract: BACKGROUND: Tendon rupture is a common thorny problem in orthopedics, and collagen secretion in tenocytes affects the repair process of tendon rupture. Connective tissue growth factor affects the fibrosis process of tissues and organs, and plays an important role in the secretion of cell collagen. However, its effects on the secretion of tenocyte collagen have been rarely reported.
OBJECTIVE: To investigate the expression of type I collagen and type III collagen in primary chicken tenocytes stimulated in vitro with different concentrations of connective tissue growth factors. 
METHODS: Six Leghorn chickens, aged 8 weeks, were killed, and deep digital flexor tendon was obtained to culture primary tenocytes. Immunofluorescence staining for type I and III collagen was used to detect the primary tenocytes. Then passage 4 tenocytes were stimulated with connective tissue growth factors at different concentrations (0, 5, 10, 20, 50, 100, 200, and 500 μg/L) for 4 days. Real-time fluorescence quantitative PCR and enzyme-linked immunosorbent assay were used to detect the mRNA and protein expression of type I collagen and type III collagen in different groups of primary tenocytes. 
RESULTS AND CONCLUSION: The primary cultured cells were identified as tenocytes by type I and III collagen immunofluorescence staining. Real-time fluorescence quantitative PCR detection showed that the mRNA expression of type I collagen and type III collagen was increased in tenocytes after connective tissue growth factor stimulation. Enzyme-linked immunosorbent assay detection showed that the protein expression of type I collagen and type III collagen was increased in tenocytes after connective tissue growth factor stimulation (P < 0.01), and both increased gradually with the increase of connective tissue growth factors concentration. Connective tissue growth factors at 20 and 50 μg/L might be the best concentrations to stimulate primary tenocytes to produce type I collagen and type III collagen in vitro. Therefore,  connective tissue growth factors within a certain concentration range can promote the secretion of type I collagen and type III collagen in primary chicken tenocytes.

Key words: connective tissue growth factor, tenocyte, type I collagen, type III collagen, cell experiment

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