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VWR® Ultra Low Temperature Upright Freezers and Freezer Packages, –86° to –50°C

Company: VWR
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Antisense Oligonucleotide-mediated Knockdown in Mammary Tumor Organoids
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2017-08-20
[Abstract]  Primary mammary tumor organoids grown in 3D are an excellent system to study tumor biology. They resemble the organization and physiology of native epithelia more closely than cancer cell lines grown in 2D, and additionally model interactions with the ECM (Boj et al., 2015; Clevers, 2016; Shamir and Ewald, 2014). Mammary tumor organoids are therefore a promising model system to identify and characterize novel drivers of breast cancer that would be unlikely to be identified using 2D cell lines. Antisense oligonucleotides can be used to efficiently and specifically knockdown target genes in the cell (Bennett et al., 2017). They can be taken up freely by organoids without the need for a transfection agent, making them a convenient tool for routine lab studies and screens. [摘要]  在3D生长的原发性乳腺肿瘤组织是研究肿瘤生物学的优秀系统。 它们类似于天然上皮的组织和生理学,比2D生长的癌细胞系更为紧密,另外还与ECM的模型相互作用(Boj et al。,2015; Clevers,2016; Shamir and Ewald,2014)。 因此,乳腺肿瘤组织因子是一种有希望的模型系统,用于识别和表征不可能使用2D细胞系识别的乳腺癌的新型驱动因素。 反义寡核苷酸可用于有效和特异地敲低细胞中的靶基因(Bennett等,2017)。 它们可以被有机物自由摄取,而不需要转染剂,使其成为常规实验室研究和筛选的便捷工具。
【背景】乳腺癌是全世界妇女中最常见的恶性肿瘤,是妇女癌症死亡率的第二大原因(Siegel等,2017)。为了改善现有的治疗方案,确定和调查具有预防乳腺癌进展潜力的新分子靶标至关重要。我们应用RNA-seq来产生与正常乳腺上皮细胞相比在原发性乳腺肿瘤中失调的长非编码RNA(lncRNA)的综合目录,并将30个先前未表征的lncRNA作为乳腺肿瘤相关RNA(MaTARs)进行优先排序。为了功能评估MaTARs作为肿瘤进展的关键驱动因素,我们对3D乳腺肿瘤组织中的所有30个MaTARs进行了反义寡核苷酸(ASO)介导的敲低分析(Diermeier等,2016)。
   ASO是短(20-mers),含有硫代磷酸酯修饰的核苷酸的单链DNA分子以及2'-ribose(5-10-5 ...

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