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Tse-2: a trans-dominant extinguisher of albumin gene expression in hepatoma hybrid cells.

机译:Tse-2:肝癌杂交细胞中白蛋白基因表达的反式灭火剂。

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Serum albumin gene expression is generally extinguished in hepatoma x fibroblast hybrids. To define the genetic basis of this phenomenon, we screened a panel of hepatoma hybrids retaining different fibroblast chromosomes for albumin production by immunofluorescence. We report that albumin extinction in these clones was strictly correlated with the retention of mouse chromosome 1. Furthermore, albumin was systematically reexpressed in chromosome 1 segregants. These data define a tissue-specific extinguisher locus (Tse-2) that affects albumin gene expression in trans. Two other liver genes, those encoding liver alcohol dehydrogenase and liv-10, were coordinately extinguished with albumin in monochromosomal hybrids that specifically retained mouse chromosome 1.
机译:血清白蛋白基因表达通常在肝癌x成纤维细胞杂种中消失。为了定义这种现象的遗传基础,我们筛选了一组保留不同成纤维细胞染色体的肝癌杂种,用于通过免疫荧光产生白蛋白。我们报告说,这些克隆中白蛋白的灭绝与小鼠1号染色体的保留密切相关。此外,白蛋白在1号染色体的分离子中被系统地重新表达。这些数据定义了一个组织特异性灭火剂基因座(Tse-2),它影响反式白蛋白基因的表达。其他两个肝脏基因,即编码肝脏酒精脱氢酶和liv-10的基因,与白蛋白在特异性保留小鼠染色体1的单染色体杂交体中被协调熄灭。

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