Analysis of gene expression using cDNA microarrays.

Analysis of gene expression using cDNA microarrays.
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使用 cDNA 微阵列分析基因表达。

DOI:
10.1385/1-59745-144-4:75
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发表时间:
2006
影响因子:
--
通讯作者:
L. Eichinger
L. Eichinger
中科院分区:
--
文献类型:
--
作者:
Marcel Kaul;L. Eichinger

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DNA微阵列由有序排列的DNA、cDNA或寡核苷酸探针组成,这些探针代表生物体的单个基因。今天,微阵列是用于大规模分析基因转录的最重要的工具。研究范围从寻找整个基因组中的关键基因到观察基因表达的整体模式。这有助于更好地理解遗传调控网络的结构,并有助于识别基因组中差异表达的基因,例如,在细胞程序中,在肿瘤中或作为治疗的结果。使用不同的荧光染料允许来自两种不同来源(组织,菌株或不同处理的细胞)的mrna以不同的颜色标记,混合和杂交到相同的阵列,这导致目标与阵列序列的竞争性结合。杂交和洗涤后,用与所用染料对应的两种不同波长扫描载玻片,并比较两个通道中同一斑点的强度。结果是测量阵列上每个基因转录水平的比率。为了找到显著调控的基因,得到的数据通过不同的生物信息学工具进行分析,如R和微阵列显著性分析(SAM)。
A DNA microarray consists of an orderly arrangement of DNA, cDNA, or oligonucleotide probes that represent individual genes of an organism. Today, microarrays are the most important tools used to analyze gene transcription on a large scale. Investigations reach from finding key genes in whole genomes to looking at overall patterns of gene expression. This provides a better understanding of the architecture of genetic regulatory networks and helps to identify those genes in the genome that are differentially expressed, e.g., during cellular programs, in tumors or as the result of a treatment. The use of different fluorescent dyes allows mRNAs from two different sources (tissues, strains, or differently treated cells) to be labeled in different colors, mixed, and hybridized to the same array, which results in competitive binding of the target to the arrayed sequences. After hybridization and washing, the slide is scanned using two different wavelengths corresponding to the dyes used, and the intensity of the same spot in both channels is compared. This results in a measurement of the ratio of transcript levels for each gene represented on the array. In order to find significantly regulated genes, the resulting data are analyzed by different bioinformatic tools such as R and significance analysis of microarrays (SAM).
DOI: 10.1091/mbc.9.12.3273
发表时间: 1998-12-01
影响因子: 3.3
作者:
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利用双色荧光探针杂交分析复杂 DNA 样品的 DNA 微阵列系统
DOI: 10.1101/gr.6.7.639
发表时间: 1996-07-01
期刊: GENOME RESEARCH
影响因子: 7
作者:
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