首页> 外文期刊>Genes to cells : >Caenorhabditis elegans T-box genes tbx-9 and tbx-8 are required for formation of hypodermis and body-wall muscle in embryogenesis.
【24h】

Caenorhabditis elegans T-box genes tbx-9 and tbx-8 are required for formation of hypodermis and body-wall muscle in embryogenesis.

机译:秀丽隐杆线虫T-box基因tbx-9和tbx-8是胚胎发生中皮下组织和体壁肌肉形成的必需条件。

获取原文
获取原文并翻译 | 示例
           

摘要

Transcription factors containing the DNA binding motif, T-box, play an important role in the embryonic development of metazoans. There are 20 T-box genes in the nematode Caenorhabditis elegans, three of which reportedly have postembryonic functions. We characterized two T-box genes, tbx-9 and tbx-8, that are phylogenetically related to each other. tbx-9 is expressed in a subset of embryonic cells that are precursors of the intestine, body-wall muscle, and hypodermis. The expression pattern of tbx-8 is markedly similar to that of tbx-9. Both tbx-9 mutants and tbx-8 mutants show incomplete penetrant morphogenetic defects in embryogenesis, but the malformations of the tbx-9 and tbx-8 mutants are observed in different parts of their bodies. In embryos with both tbx-9 and tbx-8 inactivated, the body structure is severely disorganized, more so than the sum of the separate mutant phenotypes. Further analysis shows that the hypodermis and body-wall muscle show abnormalities at the site of morphogenetic defectsof these mutants. Together, these data indicate that tbx-9 and tbx-8 do not only contribute individually to formation of the hypodermis and body-wall muscle, but also suggests functional redundancy between tbx-9 and tbx-8 in embryonic morphogenesis.
机译:含有DNA结合基序T-box的转录因子在后生动物的胚胎发育中起重要作用。线虫秀丽隐杆线虫中有20个T-box基因,据报道其中三个具有胚后功能。我们表征了两个T-box基因,tbx-9和tbx-8,它们在系统发育上相互关联。 tbx-9在一部分胚胎细胞中表达,这些细胞是肠,体壁肌肉和皮下组织的前体。 tbx-8的表达模式与tbx-9相似。 tbx-9突变体和tbx-8突变体在胚胎发生中均显示出不完全的渗透性形态发生缺陷,但在其身体的不同部位观察到了tbx-9和tbx-8突变体的畸形。在tbx-9和tbx-8均失活的胚胎中,其身体结构严重紊乱,比单独的突变表型的总和严重。进一步的分析表明,在这些突变体的形态发生缺陷部位,皮下组织和体壁肌肉显示出异常。总之,这些数据表明tbx-9和tbx-8不仅单独有助于皮下组织和体壁肌肉的形成,而且还暗示了tbx-9和tbx-8在胚胎形态发生中的功能冗余。

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