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A novel conditional NPM-ALK-driven model of CD30+ T-cell lymphoma mediated by a translational stop cassette.
Oncogene ( IF 6.9 ) Pub Date : 2019-11-21 , DOI: 10.1038/s41388-019-1058-1
Khalid Shoumariyeh 1, 2 , Nicolas Schneider 3 , Teresa Poggio 1, 4 , Pia Veratti 1, 2, 5 , Sophia Ehrenfeld 1, 2, 4, 5 , Desiree M Redhaber 1, 2, 4, 5 , Robin Khan 1 , Dietmar Pfeifer 1 , Cathrin Klingeberg 1 , Stefanie Kreutmair 1, 2 , Martina Rudelius 6 , Leticia Quintanilla-Martinez 7 , Falko Fend 7 , Anna L Illert 1, 2, 5 , Justus Duyster 1, 2, 5 , Cornelius Miething 1, 2, 5
Affiliation  

Targeted expression of transgenes is essential for the accurate representation of human disease in in vivo models. Current approaches to generate conditional transgenic mouse models are cumbersome and not amenable to high-throughput analysis since they require de novo generation and characterization of genetically modified mice. Here we describe a new system for lineage-restricted expression of transgenes based on a retroviral vector incorporating a translational stop cassette flanked by loxP recombination sites. Conditional transgene expression in chimeric mice is achieved by retroviral infection and transplantation of hematopoietic stem cells (HSC) derived from transgenic mice expressing Cre-recombinase from a lineage-specific promoter. For validation, we directed expression of NPM-ALK, the fusion oncogene driving a subset of anaplastic large cell lymphoma (ALCL), to T-cells by infecting hematopoietic stem cells from Lck-Cre-transgenic mice with a retroviral construct containing the NPM-ALK cDNA preceded by a translational stop cassette. These mice developed T-cell lymphomas within 12-16 weeks, featuring increased expression of the ALCL hallmark antigen CD30 as well as other cytotoxic T-cell markers, similar to the human disease. The new model represents a versatile tool for the rapid analysis of gene function in a defined lineage or in a developmental stage in vivo.

中文翻译:

一种由翻译终止盒介导的新型条件性 NPM-ALK 驱动的 CD30+ T 细胞淋巴瘤模型。

转基因的靶向表达对于在体内模型中准确表示人类疾病至关重要。目前生成条件转基因小鼠模型的方法很麻烦,并且不适合高通量分析,因为它们需要从头生成和表征转基因小鼠。在这里,我们描述了一种基于逆转录病毒载体的转基因谱系限制表达的新系统,该逆转录病毒载体结合了侧翼为 loxP 重组位点的翻译终止盒。嵌合小鼠的条件性转基因表达是通过逆转录病毒感染和移植来自表达来自谱系特异性启动子的 Cre 重组酶的转基因小鼠的造血干细胞 (HSC) 来实现的。为了验证,我们指导了 NPM-ALK 的表达,通过用含有 NPM-ALK cDNA 的逆转录病毒构建体感染 Lck-Cre 转基因小鼠的造血干细胞,然后将其驱动到 T 细胞的融合癌基因。这些小鼠在 12-16 周内发展为 T 细胞淋巴瘤,其特点是 ALCL 标志性抗原 CD30 以及其他细胞毒性 T 细胞标志物的表达增加,类似于人类疾病。新模型代表了一种通用工具,用于快速分析特定谱系或体内发育阶段的基因功能。具有与人类疾病相似的 ALCL 标志性抗原 CD30 以及其他细胞毒性 T 细胞标志物表达增加的特点。新模型代表了一种通用工具,用于快速分析特定谱系或体内发育阶段的基因功能。具有与人类疾病相似的 ALCL 标志性抗原 CD30 以及其他细胞毒性 T 细胞标志物表达增加的特点。新模型代表了一种通用工具,用于快速分析特定谱系或体内发育阶段的基因功能。
更新日期:2019-11-21
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