Multiplexed ion beam imaging of human breast tumors.

Multiplexed ion beam imaging of human breast tumors.
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DOI:
10.1038/nm.3488
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发表时间:
2014-04
期刊:
影响因子:
82.9
通讯作者:
--
中科院分区:
医学1区
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--
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免疫组织化学(IHC)是一种用于可视化蛋白质表达的工具,用作大多数实体组织恶性肿瘤诊断检查的一部分。现有的IHC方法使用标记有荧光团或酶报告基因的抗体,这些抗体产生有色色素。由于这些报告基因在同时使用时表现出光谱和空间重叠,因此多重IHC不常用于临床环境。我们已经开发了一种方法,使用二次离子质谱成像标记的同位素纯元素金属报告抗体。多路离子束成像(MIBI)能够在5个对数动态范围内同时分析多达100个目标。在这里,我们使用MIBI来分析福尔马林固定,石蜡包埋(FFPE)的人乳腺肿瘤组织切片,同时用10种标记物染色。由此产生的数据表明,MIBI将通过将组织微结构与高度复用的蛋白质表达模式相结合来提供新的见解,并且将对基础研究、药物发现和临床诊断具有价值。
Immunohistochemistry (IHC) is a tool for visualizing protein expression employed as part of the diagnostic work-up for the majority of solid tissue malignancies. Existing IHC methods use antibodies tagged with fluorophores or enzyme reporters that generate colored pigments. Because these reporters exhibit spectral and spatial overlap when used simultaneously, multiplexed IHC is not routinely used in clinical settings. We have developed a method that uses secondary ion mass spectrometry to image antibodies tagged with isotopically pure elemental metal reporters. Multiplexed ion beam imaging (MIBI) is capable of analyzing up to 100 targets simultaneously over a five-log dynamic range. Here, we used MIBI to analyze formalin-fixed, paraffin-embedded (FFPE) human breast tumor tissue sections stained with ten labels simultaneously. The resulting data suggest that MIBI will provide new insights by integrating tissue microarchitecture with highly multiplexed protein expression patterns, and will be valuable for basic research, drug discovery and clinical diagnostics.
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