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Mutations in the Drosophila gene encoding ribosomal protein S6 cause tissue overgrowth.

机译:果蝇基因编码核糖体蛋白S6的突变导致组织过度生长。

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We have characterized two P-element-induced, lethal mutations in Drosophila melanogaster which affect the larval hemocytes, mediators of the insect immune response. Each mutant displays larval melanotic tumors characteristic of mutations affecting the insect cellular immune system, and the moribund animals develop grossly hypertrophied hematopoietic organs because of increased cell proliferation and extra rounds of endoreduplication in some hematopoietic cells. Surprisingly, these mutations are due to P element insertions in the 5' regulatory region of the Drosophila gene encoding ribosomal protein S6 and cause a reduction of S6 transcript abundance in mutant larvae.
机译:我们已经表征了果蝇黑腹果蝇中两个P元素诱导的致死突变,这些突变影响幼虫血细胞,昆虫免疫反应的介体。每个突变体均表现出幼虫性黑色素瘤肿瘤,其特征在于影响昆虫细胞免疫系统的突变,并且垂死的动物由于某些细胞中增殖的增加和核内复制的增加而发展出肥大的造血器官。令人惊讶地,这些突变是由于在果蝇编码核糖体蛋白S6的基因的5'调节区中的P元件插入而引起的,在突变体幼虫中S6转录物丰度的降低。

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