中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (5): 683-687.doi: 10.3969/j.issn.2095-4344.2016.05.013

• 心脏及血管损伤动物模型 Animal models of heart and vascular damage • 上一篇    下一篇

Notch1和Bmi-1蛋白在肺癌组织中的表达及意义

蔡华荣,江跃全   

  1. 重庆市肿瘤研究所胸外科,重庆市 400030
  • 收稿日期:2015-11-30 出版日期:2016-01-29 发布日期:2016-01-29
  • 通讯作者: 江跃全,博士,主任医师,重庆市肿瘤研究所胸外科,重庆市 400030
  • 作者简介:蔡华荣,男,1977年生,重庆市人,汉族,硕士,主治医师,主要从事肿瘤的研究。

Expression and significance of Notch1 and Bmi-1 protein in lung cancer tissue

Cai Hua-rong, Jiang Yue-quan   

  1. Department of Thoracic Surgery, Chongqing Cancer Institute, Chongqing 400030, China
  • Received:2015-11-30 Online:2016-01-29 Published:2016-01-29
  • Contact: Jiang Yue-quan, M.D., Chief physician, Department of Thoracic Surgery, Chongqing Cancer Institute, Chongqing 400030, China
  • About author:Cai Hua-rong, Master, Attending physician, Department of Thoracic Surgery, Chongqing Cancer Institute, Chongqing 400030, China

摘要:

文章快速阅读:

 

文题释义:
细胞信号转导通路:在细胞中,各种信号转导分子相互识别、相互作用,将信号进行转换和传递,构成信号转导通路。当外界环境变化时,单细胞生物可以直接做出反应,多细胞生物则通过复杂的信号传递系统来传递信息,从而调控机体活动。传导方式包括相邻细胞直接接触、细胞分泌各种化学物质来调节其他细胞代谢和功能。
Notch1:是PCG基因家族的一员,最早发现于小鼠B细胞淋巴瘤中,被当做c-myc的协同癌基因,与细胞增殖、分化、凋亡等密切相关。当Notch1受体与其配体结合时,Notch1受体将脱离细胞膜并进入细胞核内,与转录调节因子相互作用,最终激活靶基因。

 

背景:有研究发现,Notch通路与Bmi-1基因均有调节干细胞自我更新的能力,二者功能障碍可能与肿瘤的发生有很大的关系。
目的:探讨Notch1和Bmi-1蛋白在肺癌组织中的表达水平及其临床意义。
方法:获取87例肺癌患者术后肺癌组织(肺癌组)、40例心胸外科开胸手术和肺部纤维支气管镜检查所取经病理证实的正常肺组织(正常组)作为研究对象。采用免疫组织化学SP法检测两组标本中的Notch1和Bmi-1蛋白表达情况,并分析Notch1、Bmi-1蛋白表达与肺癌患者临床病理特征的关系。
结果与结论:肺癌组Notch1、Bmi-1蛋白表达阳性率分别为61%、47%,均显著高于正常组标本(P < 0.05);肺癌组Notch1蛋白表达与Bmi-1蛋白表达具有显著的正相关关系(r=0.567,P < 0.001)。不同性别、不同病理类型患者的Notch1、Bmi-1蛋白阳性表达率差异无显著性意义(P > 0.05);低分化肺癌、发生淋巴结转移、TNM分期Ⅲ-Ⅳ级患者的Notch1、Bmi-1蛋白阳性表达率显著高于高中分化肺癌、无淋巴结转移、TNM分期Ⅰ、Ⅱ级患者(P < 0.05)。结果表明Notch1基因和Bmi-1基因可能与肺癌的发生、发展有一定的关系。 

 ORCID: 0000-0002-0923-5039(蔡华荣)

关键词: 实验动物, 心肺损伤及修复动物模型, 肿瘤干细胞, Notch1基因, Bmi-1基因, 肺癌组织

Abstract:

BACKGROUND: Studies have found that Notch pathway and Bmi-1 gene both have the ability to regulate stem cell self-renew. Functional dysfunction of the both may have a great relationship with tumorigenesis.
OBJECTIVE: To investigate the expression and clinical significance of Notch1 and Bmi-1 protein in lung tissue.
METHODS: Eighty-seven lung cancer tissue samples (lung cancer group) and forty pathologically confirmed normal lung tissue samples (normal group) were obtained from related surgeries and included as research objects. The protein expression of Notch1 and Bmi-1 in specimens of these two groups was measured by immunohistochemistry SP method. The relationship between Notch1 and Bmi-1 protein expression and clinicopathological features of lung cancer patients was analyzed.
RESULTS AND CONCLUSION: The positive rate of Notch1, Bmi-1 protein expression was respectively 61% and 47%, which was significantly higher in the lung cancer group than that in the normal group (P < 0.05). In the lung cancer group, Notch1 protein expression was significantly positively correlated with Bmi-1 protein expression (r=0.567, P < 0.001). There were no significant differences in Notch1 and Bmi-1 protein expression rates between different genders and different pathological types of patients (P < 0.05). The Notch1 and Bmi-1 protein positive expression rates in poorly-differentiated, TNM stage III-IV lung cancer patients with lymph node metastasis were significantly higher than those in well- and moderately-differentiated, TNM stage I-II lung cancer patients without lymph node metastasis (P < 0.05). These results demonstrate that Notch1 and Bmi-1 protein may have certain relationship with the occurrence and development of lung cancer.