中国组织工程研究

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骨桥蛋白干预体外培养人膝骨关节炎软骨细胞蛋白多糖和Ⅱ型胶原的表达

朱鹤远1,雷光华2,高曙光2,张方杰2,曾 超2,张 凯2   

  1. 1湖南省娄底市中心医院骨科,湖南省娄底市 417000;2中南大学湘雅医院骨科,湖南省长沙市 410013
  • 收稿日期:2015-11-07 出版日期:2016-01-08 发布日期:2016-01-08
  • 通讯作者: 雷光华,博士,教授,中南大学湘雅医院骨科,湖南省长沙市 410013
  • 作者简介:朱鹤远,男,1979年生,湖南省双峰县人,汉族,2012年中南大学毕业,硕士,主治医师,主要从事骨与关节研究。
  • 基金资助:
    国家自然科学基金资助项目(8120420、81272034、81373130、81501923);湖南省自然科技基金(14JJ3032)

Osteopontin promotes the expression of aggrecan and type II collagen in osteoarthritic chondrocytes of the knee joint in vitro 

Zhu He-yuan1, Lei Guang-hua2, Gao Shu-guang2, Zhang Fang-jie2, Zeng Chao2, Zhang Kai2
  

  1. 1Department of Orthopedics, Central Hospital of Loudi, Loudi 417000, Hunan Province, China; 2Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410013, Hunan Province, China
  • Received:2015-11-07 Online:2016-01-08 Published:2016-01-08
  • Contact: Lei Guang-hua, M.D., Professor, Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410013, Hunan Province, China
  • About author:Zhu He-yuan, Master, Attending physician, Department of Orthopedics, Central Hospital of Loudi, Loudi 417000, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 8120420, 81272034, 81373130, 81501923; the Natural Science Foundation of Hunan Province, No. 14JJ3032

摘要:

文章快速阅读:

 

文题释义:
骨桥蛋白:骨桥蛋白是最早在骨组织中发现的一种非胶原性高度磷酸化和硫酸化的糖蛋白,相对分子质量44 000-75 000,骨桥蛋白可由成骨细胞、破骨细胞、活化的T细胞、巨噬细胞、平滑肌细胞、肌腱成纤维细胞、滑膜细胞等分泌产生,并可存在于多种组织中,如骨、肾脏、平滑肌和腺体上皮细胞等。骨桥蛋白,又称之为早期T细胞活化基因1(Eta-1)或分泌型磷蛋白(Spp1),可与一系列细胞表面受体如整合素αvβ1、αvβ3、αvβ5及CD44等结合后介导信号转导、促进细胞黏附和聚集、调节细胞-基质和细胞-细胞间反应,在骨组织代谢、炎性反应和感染性疾病的免疫调节中具有重要作用。

蛋白多糖:结缔组织基质中蛋白质与多糖以共价和非共价键相连构成多种巨大分子称为蛋白多糖或黏蛋白,是通过一个或多个共价键与硫酸软骨素、硫酸皮肤素等连接的核心蛋白。

 

背景:骨桥蛋白基因和蛋白表达与骨关节炎的病变程度高度相关。
目的:进一步验证骨桥蛋白对体外培养人膝骨关节炎软骨细胞蛋白多糖和Ⅱ型胶原mRNA表达的影响。
方法:体外培养人膝骨关节炎软骨细胞。取第1代人膝骨关节炎软骨细胞,分为空白对照组、0.1 mg/L骨桥蛋白组和1 mg/L骨桥蛋白组。骨桥蛋白组加入重组骨桥蛋白0.1 mg/L或1 mg/L干预48 h;空白对照组未予任何干预继续培养48 h。用Real-time PCR测量蛋白多糖与Ⅱ型胶原的mRNA表达量。
结果与结论:经0.1 mg/L与1 mg/L两种质量浓度骨桥蛋白干预后,人膝骨关节炎软骨细胞蛋白多糖与Ⅱ型胶原mRNA表达水平显著上升(P < 0.05),1 mg/L骨桥蛋白组人膝骨关节炎软骨细胞蛋白多糖与Ⅱ型胶原mRNA表达水平高于0.1 mg/L骨桥蛋白组(P < 0.05),人膝骨关节炎软骨细胞蛋白多糖mRNA表达水平与骨桥蛋白干预质量浓度呈正相关(r=0.751,P <0.01)。人膝骨关节炎软骨细胞Ⅱ型胶原mRNA表达水平与骨桥蛋白干预浓度呈正相关(r=0.676,P < 0.01)。结果提示骨桥蛋白上调人膝骨关节炎软骨细胞蛋白多糖与Ⅱ型胶原mRNA的表达,并具有浓度依赖性。
 

 

ORCID: 0000-0002-1784-7887朱鹤远)(

关键词: 组织构建, 软骨细胞, 骨桥蛋白, 骨关节炎, 蛋白多糖, Ⅱ型胶原, Real-time, 国家自然科学基金

Abstract:

BACKGROUND: Osteopontin mRNA and protein expressions are highly correlated with the severity of osteoarthritis.
OBJECTIVE: To investigate the effect of osteopontin on the gene expression of aggrecan and type II collagen in 
the human knee osteoarthritic chondrocytes in vitro.
METHODS: Chondrocytes were harvested from human osteoarthritic knees and cultured in vitro. The chondrocytes were cultured with 0 (blank control group), 0.1, 1 mg/L osteopontin, respectively, for 48 hours. Real-time PCR was employed to detect the mRNA expression of aggrecan and type II collagen.
RESULTS AND CONCLUSION: After 0.1 and 1 mg/L osteopontin intervention, the mRNA expression of aggrecan and type II collagen in osteoarthritic chondrocytes was increased significantly (P < 0.05), and the mRNA expression of aggrecan and type II collagen was higher in the 1 mg/L osteopontin group than the 0.1 mg/L osteopontin group (P < 0.05). In addition, the mRNA expression of aggrecan and type II collagen was positively correlated with the concentration of osteopontin (r=0.751, P < 0.01; r=0.676, P < 0.01). These findings indicate that osteopontin up-regulates the mRNA expression of aggrecan and type II collagen in osteoarthritic chondrocytes of human knee in vitro in a dose-dependent manner.