转移相关蛋白2和基质金属蛋白酶—7在结肠癌中的表达及其意义
2016-07-11陈宇倩赵俊军
陈宇倩 赵俊军


[摘要] 目的 探讨转移相关蛋白2(MTA2)和基质金属蛋白酶-7(MMP-7)在结肠癌中的表达及其意义。 方法 选取本院2012年1月~2014年12月的60例结肠癌标本作为观察组,选取30例结肠癌旁组织作为对照组。应用免疫组化SP法检测MTA2、MMP-7蛋白在结肠癌与癌旁组织中的表达情况以及在肿瘤不同分化程度、不同临床分期、有无淋巴结转移及远处转移情况下的表达水平。结果 MTA2和MMP-7在结肠癌中的阳性表达与分组、分化程度、淋巴结转移、TNM分期有关,差异有统计学意义(P<0.05)。MTA2和MMP-7在结肠癌中的阳性表达率比较,差异无统计学意义(P>0.05)。 结论 MTA2和MMP-7与结肠癌的恶性程度有关,对结肠癌的侵袭转移起促进作用,能够参与结肠癌的发展过程,可作为判断结肠癌预后评估的参考指标。
[关键词] 结肠癌;转移相关蛋白2;基质金属蛋白酶-7;免疫组化
[中图分类号] R363.2 [文献标识码] A [文章编号] 1674-4721(2016)03(b)-0061-04
[Abstract ] Objective To explore expression and significance of metastasis associated protein 2 (MTA2) and matrix metalloproteinase -7 (MMP-7) in colorectal cancer. Methods 60 cases of colorectal cancer specimen from January 2012 to December 2014 in our hospital were selected as the observation group,30 cases of colorectal cancer adjacent tissues were selected as the control group.Expression condition of MMP-7 and MTA2 protein in colorectal cancer and adjacent tissues and its expression level in different degree of differentiation,clinical stage,lymph node metastasis and distant metastasis were detected by immunohistochemistry SP method. Results The positive expression of MTA2 and MMP-7 in colorectal cancer was related to the grouping,differentiation degree,lymph node metastasis and TNM stage,with significant difference (P<0.05).There was no significant difference in the positive expression rate of MTA2 and MMP-7 in colorectal cancer (P>0.05). Conclusion MTA2 and MMP-7 are related to the malignant degree of colorectal cancer,which can promotes the invasion and metastasis of colorectal cancer and it is involved in the development of colorectal cancer,can be used as a reference index for evaluating the prognosis of colorectal cancer.
[Key words] Colorectal cancer;Metastasis associated protein 2;Matrix metalloproteinase-7;Immunohistochemistry
结肠癌是一种严重危害人类健康的常见恶性肿瘤,其复发与转移会对患者的预后产生很大影响[1]。对结肠癌侵袭转移相关因素及机制的研究有助于为临床预测、控制以及治疗提供十分重要的客观指标。
近年来,国内外学者筛选出了一种肿瘤转移相关基因MTA家族,其是肿瘤转移相关基因中较重要的一种,主要参与组成组蛋白去乙酰基酶(NuRD),发挥基因转录抑制功能,通过调节雌激素通路、细胞凋亡以及细胞骨架等路径能够促进肿瘤侵袭转移[2-3]。深入研究MTA基因家族的结构特点和功能有利于分析恶性肿瘤的转移机制。目前,研究较详细的MTA家族成员为MTA1基因。已有研究证实,MTA1可能通过影响信号转导方式发挥作用,其阳性表达率与结肠癌等恶性肿瘤的大小、病程分期和肿瘤分化程度等密切相关[4-5]。……
