检验医学 ›› 2016, Vol. 31 ›› Issue (9): 810-813.DOI: 10.3969/j.issn.1673-8640.2016.09.017

• 技术研究与评价·论著 • 上一篇    下一篇

BIOMED-2标准化免疫球蛋白基因重排技术在石蜡包埋弥漫大B细胞淋巴瘤组织中的应用

孙娟1, 艾晓非1, 李庆华1, 曹增2   

  1. 1.中国医学科学院北京协和医学院血液学研究所 血液病医院病理中心,天津 300020
    2. 天津医科大学附属肿瘤医院血液科 天津市肿瘤防治重点实验室,天津 300060
  • 收稿日期:2015-08-07 出版日期:2016-09-30 发布日期:2016-10-11
  • 作者简介:null

    作者简介:孙 娟, 女, 1978年生, 学士, 主管技师,主要从事血液病理实验工作。

BIOMED-2 standardized immunoglobulin gene rearrangement detection in paraffin-embedded tissues for diffuse large B cell lymphoma

SUN Juan1, AI Xiaofei1, LI Qinghua1, CAO Zeng2   

  1. 1. Department of Pathology,the Institute of Hematology and Blood Diseases Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Tianjin 300020,China
    2. Department of Hematology,Tianjin Medical University Cancer Institute and Hospital/Tianjin Key Laboratory of Cancer Prevention and Therapy,Tianjin 300060, China
  • Received:2015-08-07 Online:2016-09-30 Published:2016-10-11

摘要:

目的探讨石蜡包埋组织标本应用BIOMED-2标准化免疫球蛋白(IG)基因重排技术检测弥漫大B细胞淋巴瘤 (DLBCL)的可行性。方法从45例石蜡包埋组织标本中提取DNA,采用BIOMED-2系统引物进行多重聚合酶链反应(PCR)扩增,并应用PCR片段分析法进行IG基因重排的克隆性分析。结果将DNA由原浓度100~500 ng/μL稀释至50~100 ng/μL后 ,DNA扩增最大片段(300~400 bp)含量由10.0%提高到90.0%;45例DLBCL石蜡切片标本提取DNA进行免疫球蛋白重链基因(IGH)和免疫球蛋白kappa基因(IGK)克隆性分析,IGH+IGK阳性率达到84.4%;15例反应性淋巴组织增生标本进行IG/T淋巴细胞抗原受体(TCR)克隆性分析,未见克隆性重排。结论稀释DNA是唯一可以既提高DNA扩增最大片段又能提高克隆性检出率的方法。在DLBCL的诊断和淋巴组织增生性疾病的鉴别诊断中,BIOMED-2标准化体系检测IGH基因克隆性重排是一种快速、可靠的方法,具有重要的临床应用价值。

关键词: 基因重排, 石蜡包埋组织, 弥漫大B细胞淋巴瘤

Abstract:

Objective To investigate the feasibility of detecting diffuse large B cell lymphoma(DLBCL) with the application of BIOMED-2 standardized immunoglobulin(IG) gene rearrangement detection in paraffin-embedded tissues. Methods DNA was extracted from 45 paraffin-embedded tissues. Multiple polymerase chain reaction(PCR) amplification was performed,and clonality analysis for IG gene rearrangement was performed by BIOMED-2 system primer. Results When DNA concentration was diluted to 50-100 ng/μL from 100-500 ng/μL,the proportion of the longest amplification fragment(300-400 bp) of DNA was improved from 10.0% to 90.0%. In 45 cases of DLBCL,the positive rate of immunoglobulin heavy chain(IGH)+ immunoglobulin kappa chain(IGK) was 84.4%. For IG/T-cell receptor(TCR) clonality analysis,no clonal rearrangement was found in 15 cases of reactive lymphoid tissue hyperplasia. Conclusions Dilution of DNA is a method to improve not only the proportion of the longest amplification fragment but also the detection rate of clonality. BIOMED-2 standardized immunoglobulin gene rearrangement detection is an efficient and reliable method for the diagnosis of DLBCL,with important clinical significance.

Key words: Gene rearrangement, Paraffin-embedded tissues, Diffuse large B cell lymphoma

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