中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (20): 3699-3706.doi: 10.3969/j.issn.2095-4344.2013.20.013

• 组织构建与生物活性因子 tissue construction and bioactive factors • 上一篇    下一篇

基因转染血管内皮生长因子促进损伤咬肌的血管生成

杨书芳1,郑建金2,董  刚2,李  涛2,吴双燕3,卢恕来2   

  1. 1青岛大学医学院附属青岛市市立医院,山东省青岛市   266011
    2青岛市市立医院口腔医学中心,山东省青岛市  266011
    3青岛市口腔医院,山东省青岛市  266000
  • 收稿日期:2012-10-18 修回日期:2012-11-09 出版日期:2013-05-14 发布日期:2013-05-14
  • 通讯作者: 郑建金,教授,硕士生导师,青岛市市立医院口腔医学中心,山东省青岛市 266011 zhjj19631016@sina.com
  • 作者简介:杨书芳★,女,1987年生,山东省阳信县人,青岛大学在读硕士,主要从事口腔颌面部肿瘤方面的研究。 411703804@qq.com
  • 基金资助:

    青岛市科技局重点项目(08-2-1-5-nsh);青岛市基金项目(11-2-3-2-(7)-nsh)。

Vascular endothelial growth factor gene transfection improves angiogenesis in radioactive damaged masseter muscle

Yang Shu-fang1, Zheng Jian-jin2, Dong Gang2, Li Tao2, Wu Shuang-yan3, Lu Shu-lai2   

  1. 1 Qingdao Municipal Hospital, Medical College of Qingdao University, Qingdao  266011, Shandong Province, China
    2 Stomatological Center of Qingdao Municipal Hospital, Qingdao  266011, Shandong Province, China
    3 Qingdao Stomatological Hospital, Qingdao  266000, Shandong Province, China
  • Received:2012-10-18 Revised:2012-11-09 Online:2013-05-14 Published:2013-05-14
  • Contact: Zheng Jian-jin, Professor, Master’s supervisor, Stomatological Center of Qingdao Municipal Hospital, Qingdao 266011, Shandong Province, China zhjj19631016@sina.com
  • About author:Yang Shu-fang★, Studying for master’s degree, Qingdao Municipal Hospital, Medical College of Qingdao University, Qingdao 266011, Shandong Province, China 411703804@qq.com
  • Supported by:

    the Key Project of Qingdao Municipal Science and Technology Bureau, No. 08-2-1-5-nsh; Qingdao Municipal Foundation, No. 11-2-3-2-(7)-nsh

摘要:

背景:放射线对恶性肿瘤的复发起预防作用,但长期大剂量放射治疗会对周围正常组织造成损害,因此如何预防及治疗放射线对周围组织的损伤一直是关注的焦点。
目的:观察放射治疗对大鼠咬肌组织的损伤情况及基因转染血管内皮生长因子对咬肌组织血管生成的影响。
方法:用直线加速器对Wistar大鼠咬肌组织进行照射,总剂量40 Gy,照射后将重组质粒pcDNA4-HisMax-C/血管内皮生长因子165及空质粒分别转染至大鼠咬肌区。于治疗结束后2周行转化生长因子β1、血管内皮生长因子蛋白免疫组化染色,检测两种蛋白的表达情况,同时在光镜下观察大鼠咬肌组织的病理变化。
结果与结论:放疗损伤组大鼠转化生长因子β1的表达水平明显高于正常对照组,重组质粒基因转染后咬肌组织血管内皮生长因子蛋白表达水平明显高于放疗损伤组、空质粒转染组及正常对照组。提示转化生长因子β1可以促进损伤组织的修复;血管内皮生长因子基因转染可促进放射治疗后咬肌组织血管的生成,从而促进放疗损伤的修复。

关键词: 组织构建, 组织构建与生物活性因子, 放射损伤, 基因转染, 血管内皮生长因子, 转化生长因子β1, 咬肌, 免疫组化, 血管新生, 其他基金

Abstract:

BACKGROUND: Long-term high-dose radiation therapy is important to prevent the recurrence of cancer. But the radioactive rays can also make hurt to the normal tissues. So, researchers focus on the protection of the surrounding normal tissues in the radiotherapy.
OBJECTIVE: To study the impact of radiation on the rat masseter muscle and the revasularization ability of the irradiated tissue by vascular endothelial growth factor gene transfection.
METHODS: The Wistar rats were radiated by linear accelerator at a dose of 40 Gy. And then the irradiated muscle tissues were transfected with pcDNA4-HisMax-C/vascular endothelial growth factor 165 or empty plasmids. After 2 weeks of gene therapy, transforming growth factor β1 and vascular endothelial growth factor protein were determined using immunohistochemical staining, and the pathological change of the rat masseter muscles was observed under a light microscope.
RESULTS AND CONCLUSION: Transforming growth factor β1 protein was highly expressed in the irradiated tissue than the control tissue. Vascular endothelial growth factor protein was significantly increased in the gene transfected group than the radiation group, empty plasmid DNA transfection group and normal control group. These findings indicate that transforming growth factor β1 can improve damaged tissue repair, and vascular endothelial growth factor gene therapy can resume the ability of revasularization of irradiated tissue, thereby promoting irradiated tissue repair.

Key words: tissue construction, tissue construction and bioactive factor, irradiation injury, gene transfection, vascular endothelial growth factor, transforming growth factor beta 1, masseter muscle, immunohistochemistry, angiogenesis, other grants-supported paper

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