Ascl3 marks adult progenitor cells of the mouse salivary gland.

Ascl3 marks adult progenitor cells of the mouse salivary gland.
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DOI:
10.1016/j.scr.2012.01.002
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发表时间:
2012-05
期刊:
影响因子:
1.2
通讯作者:
Ovitt, Catherine E.
Ovitt, Catherine E.
中科院分区:
医学4区
文献类型:
--
作者:
Rugel-Stahl, Anastasia;Elliott, Marilyn E.;Ovitt, Catherine E.

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Ascl3 转录因子标记了小鼠三个主要唾液腺中存在的唾液腺导管细胞的子集。在体内,这些细胞产生导管细胞和分泌腺泡细胞后代。在这里,我们分析了表达 Ascl3 的细胞是否在成体腺体中保留了这种多能谱系潜力。从小鼠唾液腺中分离的细胞在体外培养为非贴壁球体。对球体内表达 Ascl3 的细胞进行谱系追踪表明,从成体腺体中分离出的 Ascl3+ 细胞仍然具有多能性,可在体外产生导管细胞和腺泡细胞类型。此外,我们证明以角蛋白 5 表达为特征的祖细胞是独立于 Ascl3+ 祖细胞的群体。我们得出结论,Ascl3+ 细胞是成人唾液腺的中间谱系限制性祖细胞。
The Ascl3 transcription factor marks a subset of salivary gland duct cells present in the three major salivary glands of the mouse. In vivo, these cells generate both duct and secretory acinar cell descendants. Here, we have analyzed whether Ascl3-expressing cells retain this multipotent lineage potential in adult glands. Cells isolated from mouse salivary glands were cultured in vitro as non-adherent spheres. Lineage tracing of the Ascl3-expressing cells within the spheres demonstrates that Ascl3+ cells isolated from adult glands remain multipotent, generating both duct and acinar cell types in vitro. Furthermore, we demonstrate that the progenitor cells characterized by Keratin 5 expression are an independent population from Ascl3+ progenitor cells. We conclude that the Ascl3+ cells are intermediate lineage-restricted progenitor cells of the adult salivary glands.
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