Epithelial plasticity in the mammary gland.

Epithelial plasticity in the mammary gland.
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DOI:
10.1016/j.ceb.2017.11.012
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发表时间:
2017-12
影响因子:
7.5
通讯作者:
Macara IG
Macara IG
中科院分区:
生物学2区
文献类型:
--
作者:
Seldin L;Le Guelte A;Macara IG

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许多上皮组织依赖于多能干细胞来正常发育和维持其不同的细胞谱系。然而,在过去的十年里,乳腺内多能干细胞群的鉴定一直是争论的焦点。在这篇综述中,我们提供了一个关键的概述的各种谱系追踪研究,以解决这个问题,并得出结论,虽然多能干细胞存在于胚胎乳腺基板,出生后的乳腺,而不是包含不同的单能祖细胞群体,有助于特定阶段的发展和稳态。这就引出了为什么分化的乳腺上皮细胞可以在培养中表现出干细胞行为的问题,我们推测这种重编程潜力在正常条件下原位被抑制,但在体外被发现,并可能推动乳腺癌的发展。
Many epithelial tissues rely on multipotent stem cells for the proper development and maintenance of their diverse cell lineages. Nevertheless, the identification of multipotent stem cell populations within the mammary gland has been a point of contention over the past decade. In this review, we provide a critical overview of the various lineage-tracing studies performed to address this issue and conclude that although multipotent stem cells exist in the embryonic mammary placode, the postnatal mammary gland instead contains distinct unipotent progenitor populations that contribute to stage-specific development and homeostasis. This begs the question of why differentiated mammary epithelial cells can exhibit stem cell behavior in culture, and we speculate that such reprogramming potential is repressed in situ under normal conditions but revealed in vitro and might drive breast cancer development.
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