NanoString荧光条形码技术在弥漫大B细胞淋巴瘤分子分型中的临床应用

目的:探讨NanoString荧光条形码技术在弥漫大B细胞淋巴瘤（DLBCL）分子分型中的临床应用，分析细胞起源亚型与患者预后的相关性。方法:收集2014年1月至2019年12月山西省大同市第三人民医院12例及北京大学医学部8例DLBCL患者的肿瘤组织样本，采用Hans模型分为生发中心B细胞（GCB）型1例和非GCB型19例。在mRNA水平利用NanoString技术平台分析样本中15个Lymph2Cx分子分型相关基因的表达水平差异。通过聚类分析对20例DLBCL患者分型，并分析按此分型组间预后的差别。结果:通过NanoString荧光条形码技术对20例DLBCL患者样本进行检测并进行聚类分析后分型显示，11例为类GCB样型，9例为类活化B细胞（ABC）样型；10例类GCB样型按Hans模型为非GCB型。生存分析显示，类GCB样组总生存优于类ABC样型组（ P=0.019）。 结论:NanoString荧光条形码技术可用于DLBCL的细胞起源分型，该分子分型策略可有效预测患者预后。

Clinical application of NanoString fluorescent barcode technology in the molecular subtyping of patients with diffuse large B-cell lymphoma

Objective:To explore the clinical application of NanoString fluorescent barcode technology in the molecular subtyping of diffuse large B-cell lymphoma (DLBCL), and to analyze the correlation between the cell-of-origin subtype and prognosis of patients.Methods:The tumor tissue samples of 12 patients with DLBCL at the Third People's Hospital of Datong of Shanxi Province and 8 patients with DLBCL at Peking University, Health Science Center between January 2014 and December 2019 were collected. According to Hans algorithm, all patients were divided into 1 case of germinal center-derived B-cell (GCB) type and 19 cases of non-GCB type. NanoString platform was used to analyze the expression level differences of 15 genes-related to Lymph2Cx molecular subtyping of all samples at mRNA level. Hierarchical clustering was used to subgroup 20 DLBCL cases and to contrast the prognosis in different subgroups according to the subtyping.Results:NanoString fluorescent barcode technology was used to detect samples of 20 DLBCL cases and hierarchical clustering analysis was performed, and then subtyping results showed that 11 cases were GCB-like type and 9 cases were activated B cell (ABC)-like type. Based on Hans algorithm, 10 GCB-like cases were non-GCB type. According to the survival analysis, GCB-like group had a better overall survival compared with that in ABC-like group ( P=0.019). Conclusion:NanoString fluorescent barcode technology can be successfully applied to the cell-of-origin subtyping of DLBCL, and the molecular subtyping strategy can effectively predict the prognosis of patients.