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A partial transcriptome of human epidermis.

机译:人表皮的部分转录组。

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Serial analysis of gene expression (SAGE) is a powerful technique for global expression profiling without prior knowledge of the genes of interest. We carried out SAGE analysis of purified keratinocytes derived from human skin biopsy specimens, resulting in a partial transcriptome of human epidermis. We identified 7645 unique SAGE tags with quantitative information from 15,131 collected SAGE tags obtained from approximately 3x10(6) epidermal cells. This catalog contains a large number of genes that were not previously known to be expressed by human epidermis. Comparison with the databases of all known human SAGE tags allowed us to identify a number of keratinocyte-specific tags that putatively correspond to formerly unknown genes. Surprisingly, human epidermal keratinocytes in vivo show relatively low expression levels of genes typically associated with epidermal differentiation, whereas the expression levels of housekeeping genes are considerably higher than in cultured keratinocytes. This study provides a first step toward a transcriptome of human epidermis and, as such, harbors a wealth of information to identify genes involved in skin function, and candidate genes for genetic skin disorders. (c)2002 Elsevier Science (USA).
机译:基因表达的序列分析(SAGE)是一项用于全局表达谱分析的强大技术,无需事先了解感兴趣的基因。我们对源自人皮肤活检标本的纯化角质形成细胞进行了SAGE分析,得出了人表皮的部分转录组。我们从15131个收集的SAGE标签(从大约3x10(6)表皮细胞中获得)定量信息中识别了7645个唯一SAGE标签。该目录包含以前未知由人表皮表达的大量基因。通过与所有已知人类SAGE标签的数据库进行比较,我们可以识别出许多推测与先前未知基因相对应的角质形成细胞特异性标签。出人意料的是,人体内表皮角质形成细胞在体内显示出通常与表皮分化相关的基因的表达水平相对较低,而管家基因的表达水平明显高于培养的角质形成细胞。这项研究为人类表皮的转录组迈出了第一步,因此,它拥有大量信息来鉴定涉及皮肤功能的基因以及遗传性皮肤疾病的候选基因。 (c)2002 Elsevier Science(美国)。

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