中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (2): 179-184.doi: 10.3969/j.issn.2095-4344.2016.02.005

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

骨桥蛋白及其受体在黄韧带骨化症黄韧带细胞中的表达及其意义

许 政,周盛源,李学斌,刘晓东,陈雄生,王智清   

  1. 解放军第二军医大学附属上海长征医院脊柱三科,上海市 200003
  • 收稿日期:2015-11-16 出版日期:2016-01-08 发布日期:2016-01-08
  • 通讯作者: 陈雄生,博士,主任医师,解放军第二军医大学附属长征医院脊柱三科,上海市 200003
  • 作者简介:许政,男,1989年生,山东省青岛市人,汉族,2015年解放军第二军医大学毕业,硕士,主要从事脊柱外科方面的研究。
  • 基金资助:
    国家自然科学基金(81171753)

Expression and role of osteopontin and its receptors in ligmentum flavum cells derived from patients with ossification of ligamentum flavum

Xu Zheng, Zhou Sheng-yuan, Li Xue-bin, Liu Xiao-dong, Chen Xiong-sheng, Wang Zhi-qing   

  1. Third Department of Spinal Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
  • Received:2015-11-16 Online:2016-01-08 Published:2016-01-08
  • Contact: Chen Xiong-sheng, M.D., Chief physician, Third Department of Spinal Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
  • About author:Xu Zheng, Master, Third Department of Spinal Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81171753

摘要:

文章快速阅读:

文题释义:

骨桥蛋白:1979年Senger等首次报道一种与恶性转化有关的包含精-甘-门冬氨酸整合素结合区的磷酸化糖蛋白,称之为转化相关性磷酸蛋白。后来Franzen等从骨组织中分离出一种磷酸蛋白,其特性与Senger等发现的磷酸蛋白相似,因其是细胞在骨基质中的产物,并能在细胞与基质中的矿质形成一种桥连,人们将其命名为骨桥蛋白。
黄韧带骨化症:脊椎黄韧带骨化症与脊椎黄韧带钙化症究竟是同一种疾患,还是两种不同的疾患,目前意见尚不统一。尤其是对发生于颈椎病的病例,多主张是两种疾病。专家们认为,前者多见于男性,除脊柱外,全身其他部位无骨化征,且易与硬膜及椎板粘连;而后者则多见于女性,全身其他部位可发现钙化征,且与硬膜及椎板不粘连、无延续性;主张两者是同一疾患者认为:两者的基本病理改变相似,且十分少见钙化,因而应将其视为同一病变的不同发展阶段。作者认为,从临床诊断及治疗学的观点来看,两者并非一定需要区分,尤其是在当前各持己见的情况下,治疗上,临床医师仍应以能够为患者解除痛苦为基本原则。

 

背景:黄韧带骨化症的机制尚不明确,骨桥蛋白可能是其骨化过程中重要的影响因素。

目的:观察骨桥蛋白及其受体CD44、整合素β3在人黄韧带细胞及人骨化黄韧带细胞中的表达及其意义。
方法:胸/腰椎后路减压术中取人骨化节段黄韧带组织和非黄韧带骨化黄韧带组织各8例,均来自成人,两组组织进行体外细胞分离、培养及鉴定,分别行骨桥蛋白、CD44、整合素β3免疫组织化学染色,用倒置相差显微镜观察结果,提取总RNA行半定量PCR检测。
结果与结论:免疫细胞化学染色结果显示,黄韧带组织组中骨化节段黄韧带细胞骨桥蛋白、CD44、整合素β3表达强度均大于非黄韧带骨化组(P < 0.01)。PCR检测结果显示,黄韧带组织组中骨化节段黄韧带细胞骨桥蛋白、CD44、整合素β3 mRNA表达强度明显强于非黄韧带骨化组(P < 0.05)。结果表明,黄韧带骨化时黄韧带细胞中骨桥蛋白及其受体CD44、整合素β3基因表达均升高。 

关键词: 组织构建, 组织工程, 肌肉肌腱韧带, 骨桥蛋白, CD44, 整合素&beta, 3, 黄韧带细胞, 黄韧带骨化症, 原代培养, 细胞鉴定, 免疫荧光染色, PCR, 国家自然科学基金

Abstract:

BACKGROUND: The exact pathogenesis of ossification of ligamentum flavum has not been elucidated yet. And osteopontin may be an important factor involved in the ossification of ligamentum flavum.
OBJECTIVE: To clarify the expression and significance of osteopontin and its receptors, CD44 and integrin-β3, in ligamentum flavum cells between normal controls and patients with ossification of ligamentum flavum.
 
METHODS: Ligamentum flavum tissues were obtained from normal adult controls and adult patients with ossification of ligamentum flavum (n=8 per group) who underwent thoracic/lumbar posterior decompression surgery. Ligmentum flavum cells were separated, cultured and identified in vitro, and osteopontin, CD44, integrin-β3 were stained using immunocytochemistry method and observed under inverted phase contrast microscope. And the mRNA expressions of osteopontin, CD44, integrin-β3 were measured by RT-PCR.
RESULTS AND CONCLUSION: Immunocytochemistry results showed that the stronger positive staining for osteopontin, CD44, integrin-β3 was observed in the ossification of ligamentum flavum group than the control group (P < 0.01). The mRNA expressions of osteopontin, CD44 and integrin-β3 were also higher in the ossification of ligamentum flavum group than the control group (P < 0.05). These findings indicate that osteopontin and its receptors, CD44 and integrin-β3, in ligamentum flavum cells may play an important role in ossification of ligamentum flavum.