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Laser Microdissection Systems

机译:激光显微切割系统

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Years ago, tissue samples mounted on glass slides were consigned to a future of histological or immunohistological examination, and then, to the trash bin. Postmicro- scopic polymerase chain reaction (PCR) analyses of interesting cellular colonies were impossible, because there was no way to get those cells off the slides, or to isolate those few cells from the vast majority of uninteresting ones. But thanks to laser microdissection (LMD), that is no longer the case. LIVID allows researchers to target a specific cell―or even chromosome―and excise it from the cells that surround it on a s ide, or in some cases, on a culture dish. Researchers can use some LMD systems to destroy a particular cell in the midst of surrounding tissue of interest, a process referred to as negative selection. These instruments have other applications in microsurgery, microinjection, in vitro fertilization, and cell fusion research. LMD dates to the 1970s, when researchers used lasers to trap and manipulate cells. In the mid-1990s, under the National Institutes of Health at the National Institute of Child Health and Human Development and the National Cancer Institute, researchers developed the first LMD system as a research prototype. The NIH later worked in partnership with Mountain View, Calif-based Arcturus Engineering, to develop a commercial system.
机译:几年前,安装在载玻片上的组织样本被委托进行组织学或免疫组织学检查,然后再交给垃圾桶。显微镜下对感兴趣的细胞集落进行聚合酶链反应(PCR)分析是不可能的,因为无法将这些细胞从载玻片上移走,也无法将这些细胞与绝大多数无关细胞分离。但是由于激光显微切割(LMD),情况已不再如此。 LIVID允许研究人员靶向特定的细胞甚至染色体,并从一侧或某些情况下在培养皿中将其周围的细胞切除。研究人员可以使用某些LMD系统破坏周围目标组织中间的特定细胞,这一过程称为阴性选择。这些仪器在显微外科手术,显微注射,体外受精和细胞融合研究中还有其他应用。 LMD可以追溯到1970年代,当时研究人员使用激光捕获和操纵细胞。在1990年代中期,在美国国家儿童健康与人类发展研究所和美国国家癌症研究所的美国国立卫生研究院的领导下,研究人员开发了第一个LMD系统作为研究原型。 NIH随后与位于加利福尼亚州山景城的Arcturus Engineering合作开发了商用系统。

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