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首页> 外文期刊>Developmental cell >The Alternative Splicing Regulator Nova2 Constrains Vascular Erk Signaling to Limit Specification of the Lymphatic Lineage
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The Alternative Splicing Regulator Nova2 Constrains Vascular Erk Signaling to Limit Specification of the Lymphatic Lineage

机译:替代剪接调节器Nova2将血管ERK信号传导限制为限制淋巴谱的规格

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摘要

The correct assignment of cell fate within fields of multipotent progenitors is essential for accurate tissue diversification. The first lymphatic vessels arise from pre-existing veins after venous endothelial cells become specified as lymphatic progenitors. Prox1 specifies lymphatic fate and labels these progenitors; however, the mechanisms restricting Prox1 expression and limiting the progenitor pool remain unknown. We identified a zebrafish mutant that displayed premature, expanded, and prolonged lymphatic specification. The gene responsible encodes the regulator of alternative splicing, Nova2. In zebrafish and human endothelial cells, Nova2 selectively regulates pre-mRNA splicing for components of signaling pathways and phosphoproteins. Nova2-deficient endothelial cells display increased Mapk/Erk signaling, and Prox1 expression is dynamically controlled by Erk signaling. We identify a mechanism whereby Nova2-regulated splicing constrains Erk signaling, thus limiting lymphatic progenitor cell specification. This identifies the capacity of a factor that tunes mRNA splicing to control assignment of cell fate during vascular differentiation.
机译:在多电祖细胞祖的字段内正确分配细胞命运对于准确的组织多样化至关重要。在静脉内皮细胞被指定为淋巴祖细胞之后,第一淋巴管由预先存在的静脉产生。 Prox1指定淋巴命运并标记这些祖细胞;然而,限制Prox1表达和限制祖池的机制仍然未知。我们鉴定了斑马鱼突变体,显示出过早,扩大和延长的淋巴原型。该基因负责编码替代剪接的调节器,Nova2。在斑马鱼和人类内皮细胞中,Nova2选择性地调节信号传导途径和磷蛋白的组分的前mRNA剪接。 Nova2缺陷的内皮细胞显示增加的MAPK / ERK信令,并且通过ERK信号动态控制Prox1表达式。我们识别Nova2调节剪接约束ERK信号的机制,从而限制淋巴祖细胞规格。这鉴定了调节mRNA剪接以在血管分化期间控制细胞命运的分配的因素的能力。

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  • 来源
    《Developmental cell》 |2019年第2期|共19页
  • 作者单位

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Cell Biol &

    Mol Med Brisbane Qld 4073 Australia;

    Univ South Australia Ctr Canc Biol Adelaide SA Australia;

    Univ South Australia Ctr Canc Biol Adelaide SA Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ South Australia Ctr Canc Biol Adelaide SA Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Cell Biol &

    Mol Med Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

    Univ South Australia Ctr Canc Biol Adelaide SA Australia;

    Univ Queensland Inst Mol Biosci Div Genom Dev &

    Dis Brisbane Qld 4073 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

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