Mouse Incisor Stem Cell Niche and Myb Transcription Factors

Mouse Incisor Stem Cell Niche and Myb Transcription Factors
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小鼠门牙干细胞生态位和 Myb 转录因子

DOI:
10.1111/ahe.12145
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发表时间:
2014
期刊:
Anatomia
影响因子:
--
通讯作者:
R.J. And Matalova
R.J. And Matalova
中科院分区:
--
文献类型:
--
作者:
Svandova;Vesela;Smarda;Radlanski;R.J. And Matalova

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牙齿硬组织主要由成牙本质细胞(牙本质)和成釉细胞(牙釉质)形成。虽然经常观察到牙本质的修复,但大多数物种的牙釉质不会再生。然而,在小鼠门牙中,颈环中的一群体细胞干细胞负责门牙再生。因此,了解这些细胞的特异性对基础研究和再生疗法很有意义。 Myb 转录因子参与重要的细胞过程。 B-Myb 通常与干细胞表型相关,c-Myb 表达标志着未分化和增殖的细胞,例如干细胞。在本研究中,通过免疫组织化学方法,B-Myb 和 c-Myb 蛋白的时空表达与小鼠切牙颈环中假定的体干细胞的定位相关。 B-Myb 表达主要集中在转运扩增细胞区域,c-Myb 在内釉质上皮、周围间质和分化细胞中发现。总而言之,B-Myb 和 c-Myb 都不专门存在于门牙干细胞生态位区域,也不是大量存在的。然而,它们的分布支持最近报道的 c-Myb 在硬组织细胞分化中的新功能。
Dental hard tissues are formed particularly by odontoblasts (dentin) and ameloblasts (enamel). Whereas the reparation of dentin is often observed, enamel does not regenerate in most species. However, in mouse incisor, a population of somatic stem cells in the cervical loop is responsible for the incisor regeneration. Understanding of the specificities of these cells is therefore of an interest in basic research as well as regenerative therapies. The Myb transcription factors are involved in essential cellular processes. B‐Myb is often linked to the stem cell phenotype, and c‐Myb expression marks undifferentiated and proliferating cells such as the stem cells. In the presented study, temporo‐spatial expression of B‐Myb and c‐Myb proteins was correlated with localisation of putative somatic stem cells in the mouse incisor cervical loop by immunohistochemistry. B‐Myb expression was localised mostly in the zone of transit‐amplifying cells, and c‐Myb was found in the inner enamel epithelium, the surrounding mesenchyme and in differentiated cells. Taken together, neither B‐Myb nor c‐Myb was exclusively present or abundant in the area of the incisor stem cell niche. Their distribution, however, supports recently reported novel functions of c‐Myb in differentiation of hard tissue cells.
出生后磨牙和牙槽骨发育过程中 c-MYB 在分化细胞中的定位。
DOI: --
发表时间: 2012
影响因子: 1.9
作者:
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发表时间: 1999
期刊: The International journal of developmental biology
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发表时间: 2013-11
期刊: STEM CELL RESEARCH
影响因子: 1.2
作者:
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DOI: --
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期刊: Development, Growth and Differentiation
影响因子: --
作者:
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DOI: 10.1016/j.devcel.2012.05.012
发表时间: 2012-08-14
期刊: DEVELOPMENTAL CELL
影响因子: 11.8
作者:
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