中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (23): 3621-3626.doi: 10.3969/j.issn.2095-4344.2724

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

碱性成纤维细胞生长因子拮抗细胞外炎性因子保护软骨细胞

杨  帆1,2,刘保一2,曹  孟2,朱小姝3,张  于2,覃开蓉1,赵德伟1,2   

  1. 1大连理工大学生物医学工程系,辽宁省大连市  116024;2大连大学附属中山医院骨科,辽宁省大连市  116001;3中山大学附属第八医院,广东省深圳市  518033
  • 收稿日期:2019-08-14 修回日期:2019-08-16 接受日期:2019-10-15 出版日期:2020-08-18 发布日期:2020-04-25
  • 通讯作者: 赵德伟,博士,主任医师,教授,大连理工大学生物医学工程系,辽宁省大连市 116024;大连大学附属中山医院骨科,辽宁省大连市 116001
  • 作者简介:杨帆,男,1987年生,黑龙江省大庆市人,汉族,大连理工大学在读博士,医师,主要从事生物材料和骨科学相关的实验研究。
  • 基金资助:
    中国博士后科学基金面上项目(2017M621116);大连市高层次人才创新支持计划-“科技之星”项目(2017RQ154);辽宁省博士启动基金项目(201601299);辽宁省教育厅科学研究一般项目(L2015021)

Basic fibroblast growth factors protect chondrocytes by antagonizing extracellular inflammatory factors

Yang Fan1, 2, Liu Baoyi2, Cao Meng2, Zhu Xiaoshu3, Zhang Yu2, Qin Kairong1, Zhao Dewei1, 2   

  1. 1Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China; 2Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China; 3The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, Guangdong Province, China
  • Received:2019-08-14 Revised:2019-08-16 Accepted:2019-10-15 Online:2020-08-18 Published:2020-04-25
  • Contact: Zhao Dewei, MD, Chief physician, Professor, Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China; Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China
  • About author:Yang Fan, MD candidate, Physician, Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China; Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China
  • Supported by:
    the Postdoctoral Science Foundation of China (General Project), No. 2017M621116; Dalian High-Level Talent Innovation Support Program-“Science and Technology Star” Project, No. 2017RQ154; Liaoning Provincial Doctoral Start-up Foundation, No. 201601299; General Research Project of Liaoning Education Department, No. L2015021

摘要:

文题释义:

碱性成纤维细胞生长因子:是一种促细胞分裂的肝素结合蛋白,可诱导多种细胞增殖与分化,如软骨细胞、成纤维细胞、骨细胞、血管内皮细胞、肾上腺皮质和髓质细胞、神经元和神经胶质细胞等,在血管形成、促进创伤愈合与组织修复、促进神经组织生长发育过程中起着十分重要的作用。

炎性细胞因子:是指参与炎症反应的各种细胞因子,主要包括肿瘤坏死因子α、白细胞介素1、白细胞介素6等,其具有激活中性粒细胞和淋巴细胞、诱导B细胞分化和产生抗体、诱导T细胞活化增殖与分化、参与机体免疫应答、促进炎性反应等免疫学作用。

背景:目前对于碱性成纤维细胞生长因子促进软骨细胞增殖以及白细胞介素1等炎性因子破坏软骨细胞结构的研究较多,但尚未有二者联合对软骨细胞影响的报道。

目的:探讨碱性成纤维细胞生长因子和炎性因子对软骨细胞增殖、分化的影响。

方法:取体外培养第3代SD大鼠软骨细胞分为4组:①空白对照组:软骨细胞单独培养;②阴性对照组:加入含肿瘤坏死因子α、白细胞介素1和白细胞介素6的无血清DMEM/F12培养基进行培养;③阳性对照组:加入含碱性成纤维细胞生长因子的无血清DMEM/F12培养基进行培养;④实验组:加入含肿瘤坏死因子α、白细胞介素1、白细胞介素6和碱性成纤维细胞生长因子的无血清DMEM/F12培养基进行培养。CCK-8法检测第3,5,7天各组软骨细胞的增殖活性;ELISA检测第3,5,7天各组软骨细胞中炎性因子水平;免疫荧光染色检测第7天各组软骨细胞Ⅱ型胶原和蛋白聚糖的蛋白水平;Real time-PCR检测第3,5,7天各组软骨细胞Ⅱ型胶原和蛋白聚糖的mRNA水平。

结果与结论:①4组软骨细胞在3个时间点增殖情况,阳性对照组>实验组>空白对照组>阴性对照组;②与空白对照组相比,阴性对照组白细胞介素1、白细胞介素6和肿瘤坏死因子α水平明显升高(P < 0.05);与阴性对照组相比,实验组白细胞介素1、白细胞介素6和含肿瘤坏死因子α水平明显降低(P < 0.05);③空白对照组、阳性对照组、实验组Ⅱ型胶原和蛋白聚糖染色均呈现阳性,阳性对照组软骨细胞Ⅱ型胶原和蛋白聚糖表达最显著;④与空白对照组相比,阳性对照组、实验组Ⅱ型胶原和蛋白聚糖在各时间点表达均上调,差异有显著性意义(P < 0.05);而阴性对照组Ⅱ型胶原和蛋白聚糖在各时间点表达均下调,与空白对照组比较差异有显著性意义(P < 0.05);⑤结果表明,合理应用碱性成纤维细胞生长因子能有效维持软骨细胞的表型,抑制去分化,促进细胞增殖。

ORCID: 0000-0001-8611-0558(赵德伟)

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:

软骨细胞, 细胞增殖, 细胞分化, 碱性成纤维细胞生长因子, 白细胞介素1, 白细胞介素6, 肿瘤坏死因子α

Abstract:

BACKGROUND: Nowadays, there are many studies addressing basic fibroblast growth factor (bFGF) that promotes chondrocyte differentiation and inflammatory factors that damage chondrocyte structure, such as interleukin-1, but there are no reports on the combined effect of the two factors on chondrocytes.

OBJECTIVE: To observe the effect of bFGF and inflammatory cytokines on growth characteristics and differentiation potential of chondrocytes.

METHODS: Passage 3 chondrocytes from Sprague-Dawley rats cultured in vitro were divided into four groups: a blank control group in which chondrocytes were cultured alone, a negative control group in which chondrocytes were cultured with serum-free DMEM/F12 containing tumor necrosis factor-α, interleukin-1 and interleukin-6, a positive control group in which chondrocytes were cultured with serum-free DMEM/F12 containing bFGF, and an experimental group in which chondrocytes were cultured with serum-free DMEM/F12 containing bFGF, tumor necrosis factor-α, interleukin-1 and interleukin-6. At 3, 5, and 7 days after culture, the proliferative activity of chondrocytes was detected by cell counting kit-8 method; the levels of inflammatory cytokines were determined by ELISA method; and mRNA expression of collagen type II and proteoglycan in chondrocytes was measured by real-time PCR. Protein levels of collagen type II and proteoglycan were assessed by immunofluorescence assay at 7 days after culture.

RESULTS AND CONCLUSION: At 3, 5, 7 days after culture, the proliferation of chondrocytes ranked as follows: positive control group > experimental group > blank control group > negative control group. Compared with the blank control group, the expressions of interleukin-1, interleukin-6 and tumor necrosis factor-α were significantly increased in the negative control group. However, compared with the negative control group, the expressions of the above three inflammatory cytokines in the experimental group showed a significant decline (P < 0.05). There was positive expression of collagen type II and proteoglycan in the blank control, positive control and experimental groups, especially in the negative control group. Compared with the blank control group, the expressions of collagen type II and proteoglycan were up-regulated significantly in the positive control and experimental groups. To conclude, the rationale use of bFGF can maintain the phenotype of chondrocytes, inhibit dedifferentiation and promote cell proliferation.

Key words: chondrocytes, cell proliferation, cell differentiation, basic fibroblast growth factor; interleukin-1, interleukin-6, tumor necrosis factor-

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