首页> 外文期刊>International journal of sheep and wool science >The germline stem cells of Drosophila melanogaster partition DNA non-randomly.
【24h】

The germline stem cells of Drosophila melanogaster partition DNA non-randomly.

机译:果蝇的生殖干细胞非随机分配DNA。

获取原文
获取原文并翻译 | 示例
           

摘要

The Immortal Strand Hypothesis proposes that asymmetrically dividing stem cells cosegregate chromatids to retain ancestral DNA templates. Using both pulse-chase and label retention assays, we show that non-random partitioning of DNA occurs in germline stem cells (GSCs) in the Drosophila ovary as these divide asymmetrically to generate a new GSC and a differentiating cystoblast. This process is disrupted when GSCs are forced to differentiate through the overexpression of Bag of Marbles, a factor that impels the terminal differentiation of cystoblasts. When Decapentaplegic, a ligand which maintains the undifferentiated state of GSCs, is expressed ectopically the non-random partitioning of DNA is similarly disrupted. Our data suggest asymmetric chromatid segregation is coupled to mechanisms specifying cellular differentiation via asymmetric stem cell division.
机译:永生链假说提出,不对称分裂的干细胞共分离染色单体以保留祖先的DNA模板。使用脉冲追踪和标记保留分析,我们显示果蝇卵巢的种系干细胞(GSC)中发生DNA的非随机分配,因为它们不对称分裂以生成新的GSC和分化的成胚细胞。当GSC被迫通过大理石袋的过表达来分化时,这一过程被破坏,这是促使成囊细胞最终分化的一个因素。当十足瘫痪时,异位表达维持GSCs未分化状态的配体,同样破坏DNA的非随机分配。我们的数据表明不对称染色单体分离与通过不对称干细胞分裂指定细胞分化的机制相结合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号