Drosophila neuroblasts retain the daughter centrosome.

Drosophila neuroblasts retain the daughter centrosome.
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DOI:
10.1038/ncomms1245
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发表时间:
2011
影响因子:
16.6
通讯作者:
Gonzalez, Cayetano
Gonzalez, Cayetano
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Januschke, Jens;Llamazares, Salud;Reina, Jose;Gonzalez, Cayetano

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在不对称的有丝分裂过程中,无论是在雄性果蝇生殖干细胞和小鼠胚胎神经祖细胞,母亲的中心体被保留的自我更新的细胞,因此表明,母亲的中心体遗传可能有助于干。我们测试这一假设在果蝇成神经细胞(NB)跟踪光转换中心粒和子中心粒特异性标记克隆果蝇同源的人Centrobin。在这里,我们表明,在不对称有丝分裂,母亲中心体是由正在分化的子细胞继承。我们的研究结果表明,成熟依赖的中心体的命运在果蝇NBs和这些细胞的干属性是没有链接到母亲中心体遗传。 在果蝇神经母细胞中已经报道了中心体的不对称分裂,但是这种类型的分裂是否对干细胞的自我更新有影响还不清楚。在这项研究中,作者表明中心体的不对称分裂与细胞的不对称命运相关,并且子中心体被成神经细胞保留。
During asymmetric mitosis, both in male Drosophila germline stem cells and in mouse embryo neural progenitors, the mother centrosome is retained by the self-renewed cell; hence suggesting that mother centrosome inheritance might contribute to stemness. We test this hypothesis in Drosophila neuroblasts (NBs) tracing photo converted centrioles and a daughter-centriole-specific marker generated by cloning the Drosophila homologue of human Centrobin. Here we show that upon asymmetric mitosis, the mother centrosome is inherited by the differentiating daughter cell. Our results demonstrate maturation-dependent centrosome fate in Drosophila NBs and that the stemness properties of these cells are not linked to mother centrosome inheritance. Asymmetric partitioning of centrosomes has been reported in Drosophila neuroblasts, but whether this type of division has implications for stem cell self-renewal is unclear. In this study, the authors show that the asymmetric division of the centrosomes correlates with the asymmetric fate of the cells and that the daughter centrosome is retained by the neuroblast.
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