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Regulation of cell proliferation and wing development by Drosophila SIN3 and String

机译:果蝇SIN3和String对细胞增殖和机翼发育的调节

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The transcriptional corepressor SIN3 is an essential gene in metazoans. In cell culture experiments, loss of SIN3 leads to defects in cell proliferation. Whether and how SIN3 may regulate the cell cycle during development has not been explored. To gain insight into this relationship, we have generated conditional knock down of Drosophila SIN3 and analyzed effects on growth and development in the wing imaginal disc. We find that loss of SIN3 affects normal cell growth and leads to down regulation of expression of the cell cycle regulator gene String (STG). A SIN3 knock down phenotype can be suppressed by overexpression either of STG or of Cdk1, the target of STG phosphatase. These data link SIN3 and STG in a genetic pathway that affects cell cycle progression in a developing tissue.
机译:转录共抑制因子SIN3是后生动物的必需基因。在细胞培养实验中,SIN3的丢失会导致细胞增殖缺陷。 SIN3是否以及如何在发育过程中调节细胞周期尚未探讨。为了深入了解这种关系,我们产生了果蝇SIN3的条件性敲除,并分析了对机翼假想盘中生长和发育的影响。我们发现,SIN3的缺失会影响正常细胞的生长,并导致细胞周期调节基因String(STG)的表达下调。可以通过STG或STd磷酸酶的靶标Cdk1的过表达抑制SIN3敲除表型。这些数据在影响发育组织中细胞周期进程的遗传途径中链接了SIN3和STG。

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