Gfi1 functions downstream of Math1 to control intestinal secretory cell subtype allocation and differentiation

Gfi1 functions downstream of Math1 to control intestinal secretory cell subtype allocation and differentiation
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DOI:
10.1101/gad.1353905
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发表时间:
2005-10-15
影响因子:
10.5
通讯作者:
Zoghbi, HY
Zoghbi, HY
中科院分区:
生物学1区
文献类型:
--
作者:
Shroyer, NF;Wallis, D;Zoghbi, HY

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Gfi1 是一种转录抑制因子,与淋巴瘤发生、中性粒细胞减少症、造血发育以及耳和肺发育有关。在这里,我们证明 Gfi1 在肠道分泌谱系分化中发挥 Math1 下游的作用。 Gfi1(-/-)小鼠缺乏潘氏细胞,杯状细胞较少,且有多余的肠内分泌细胞。 Gfi1(-/-) 小鼠表现出与细胞分配改变一致的基因表达变化。这些数据表明 Gfi1 的功能是选择杯状/潘氏细胞与肠内分泌祖细胞。我们提出了一种肠细胞命运选择模型,其中 β-catenin 和 Cdx 在 Math1 上游发挥作用,而谱系特异性基因(如 Ngn3)在 Gfi1 下游发挥作用。
Gfi1 is a transcriptional repressor implicated in lymphomagenesis, neutropenia, and hematopoietic development, as well as ear and lung development. Here, we demonstrate that Gfi1 functions downstream of Math1 in intestinal secretory lineage differentiation. Gfi1(-/-) mice lack Paneth cells, have fewer goblet cells, and supernumerary enteroendocrine cells. Gfi1(-/-) mice show gene expression changes consistent with this altered cell allocation. These data suggest that Gfi1 functions to select goblet/Paneth versus enteroendocrine progenitors. We propose a model of intestinal cell fate choice in which beta-catenin and Cdx function upstream of Math1, and lineage-specific genes such as Ngn3 act downstream of Gfi1.