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Cell fate analysis in fetal mouse lung reveals distinct pathways for TI and Til cell development

机译:胎儿小鼠肺中的细胞命运分析显示了Ti和TIL细胞发育的明显途径

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To study cell lineage directly by fate mapping, we developed new [ransgenic mouse models in which rtTA is driven either by the rat podoplanin or the mouse Sftpc gene to mark cells irreversibly in development. Using these models, we found two distinct lineage pathways. One pathway, evident as early as E12-15, is devoted almost exclusively to TI cell development; a second pathway gives rise predominantly to TII cells but also a subpopulation of TI cells. We have defined the molecular phenotypes of these distinct progenitor populations and have identified potential regulatory factors in TI and TII cell differentiation. By analyzing gene pathways in mature TI and TII cells, we identified potential novel functions of each cell type. These results provide novel insights into lung development and suggest a basis for testing strategies to promote alveolar differentiation and repair, including potential transplantation of lineage-specific progenitor cells.
机译:为了通过命运映射直接学习细胞谱系,我们开发了新的[ranscenic小鼠模型,其中rtta由大鼠码孔蛋白或小鼠sftpc基因驱动,以标记细胞不可逆转地开发。 使用这些模型,我们发现了两个不同的谱系途径。 一直是一直作为E12-15的途径,几乎专注于Ti细胞开发; 第二个途径主要引起TII细胞,但也产生了Ti细胞的亚群。 我们已经确定了这些不同的祖细胞群的分子表型,并鉴定了Ti和TiI细胞分化中的潜在调节因子。 通过分析成熟Ti和TiI细胞中的基因途径,我们确定了每种细胞类型的潜在新功能。 这些结果提供了对肺部发展的新颖见解,并表明了促进肺泡分化和修复的测试策略的基础,包括潜在地移植谱系特异性祖细胞。

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