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Growth arrest-inducing genes are activated in Dbl-transformed mouse fibroblasts.

机译:诱导生长停滞的基因在Dbl转化的小鼠成纤维细胞中被激活。

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The Dbl oncogene is a guanine nucleotide exchange factor for Rho GTPases and its activity has been linked to the regulation of gene transcription. Dbl oncogene expression in NIH3T3 cells leads to changes in morphological and proliferative properties of these cells, inducing a highly transformed phenotype. To gain insights into Dbl oncogene-induced transformation we compared gene expression profiles between Dbl oncogene-transformed and parental NIH3T3 cells by cDNA microarray. We found that Dbl oncogene expression is associated with gene expression modulation involving upregulation of 51 genes and downregulation of 49 genes. Five of the overexpressed genes identified are known to exert antiproliferative functions. Our observations suggest that the expression of Dbl oncogene in NIH3T3 may lead to the induction of genes associated with cell cycle arrest, possibly through the activation of stress-induced kinases.
机译:Dbl癌基因是Rho GTPases的鸟嘌呤核苷酸交换因子,其活性与基因转录的调控有关。 NIH3T3细胞中Dbl癌基因表达导致这些细胞的形态和增殖特性发生变化,从而诱导高度转化的表型。为了深入了解Dbl癌基因诱导的转化,我们通过cDNA微阵列比较了Dbl癌基因转化的和亲代NIH3T3细胞之间的基因表达谱。我们发现Dbl癌基因表达与基因表达调控有关,涉及51个基因的上调和49个基因的下调。已知鉴定出的过表达的基因中有五个具有抗增殖功能。我们的观察结果表明,NIH3T3中Dbl癌基因的表达可能导致与细胞周期停滞有关的基因的诱导,可能是通过激活应激诱导的激酶引起的。

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