[摘要] 目的 研究FHL1蛋白和FHL1基因在甲状腺癌中的表达及临床意义。 方法 分别应用实时定量PCR、蛋白质杂交检测人甲状腺乳头状癌组织标本及结节性甲状腺肿标本中FHL1基因和蛋白的表达情况。 结果 实时定量PCR提示FHL1基因在结节性甲状腺肿中高表达,在甲状腺乳头状癌中低表达,相对表达量为(0.4538±0.0074),差异有统计学意义(P http://
[关键词] 甲状腺乳头状癌;FHL1基因;FHL1蛋白;抑癌基因
[中图分类号] R736.1 [文献标识码] A [文章编号] 1673-9701(2017)32-0005-03
[Abstract] Objective To study the expression and clinical signifiance of FHL1 protein and FHL1 gene in thyroid carcinoma. Methods Real-time quantitative PCR and protein hybridization were used to detect the expression of FHL1 gene and protein in papillary thyroid carcinoma specimens and nodular goiter specimens. Results Real-time quantitative PCR indicated that FHL1 gene was highly expressed in nodular goiter, and lowly expressed in papillary thyroid carcinoma. The relative expression amount was(0.4538±0.0074), which was significant from the statistical analysis(P理学证实,并且取材经过患者及其家属同意,所有标本留取后于30 min内放置于-80℃冰箱保存备用。
主要试剂及仪器:垂直电泳槽及转膜槽、RNA提取试剂盒、Quant cDNA合成试剂盒、兔抗人FHL1抗体、Real Master Mix(SYBR Green)试剂盒、DAB显色试剂盒、Stepone PCR仪。 1.2 方法
1.2.1 实时定量PCR方法 PCR引物序列(FHL1基因)见表1。提取新鲜的甲状腺乳头状癌及结节性甲状腺肿标本各40例,每例样本重约0.2 g,采用Trizol法提取组织中总的RNA,并且测定RNA提取的浓度及纯度,证明提取的RNA完整。cDNA合成(20 μL反应体系):反应采用20μL反应体系,依据说明书依次加入试剂,在37℃水浴中放置60 min。参照试剂盒说明完成Real-time PCR。
1.2.2 Western-blotting方法 取出新鲜的甲状腺乳头状癌和对照组标本,每组均40例,每例约0.2 g,按照说明书提取组织蛋白,然后测定总蛋白浓度,配置电泳所需的浓缩胶和分离胶,每个小孔的用量是50 μg,基准Marker为5 μL,100 V电泳,继续15 V电压,经过1 h后将胶移至硝基纤维膜上,然后脱脂奶粉脱脂2 h,滴加Ⅰ抗(FHL1抗体浓度1∶1000),置于4℃冰箱过夜,滴加Ⅱ抗(浓度为1∶5000)室温静置1.5 h,滴加发光液。
1.3 观察指标
实时定量PCR观察指标:收集溶解、扩增曲线,然后计算相对表达量;Western-blotting方法?^察指标:暗室内进行曝光显影定影,最后软件分析蛋白浓度灰度。
1.4 统计学方法
使用SPSS16.0软件包对数据进行处理,计数资料采用χ2检验,计量资料采用t检验,P [参考文献]
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(收稿日期:2017-09-12)