An autonomous BMP2 regulatory element in mesenchymal cells.

An autonomous BMP2 regulatory element in mesenchymal cells.
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DOI:
10.1002/jcb.22975
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发表时间:
2011-02
影响因子:
4
通讯作者:
Rogers, Melissa B.
Rogers, Melissa B.
中科院分区:
生物学2区
文献类型:
--
作者:
Kruithof, Boudewijn P. T.;Fritz, David T.;Liu, Yijun;Garsetti, Diane E.;Frank, David B.;Pregizer, Steven K.;Gaussin, Vinciane;Mortlock, Douglas P.;Rogers, Melissa B.

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BMP 2是控制间充质细胞分化和行为的形态发生素。例如,BMP 2浓度控制间充质前体向肌细胞、脂肪细胞、软骨细胞和成骨细胞的分化。Bmp 2 mRNA的3′非翻译区(UTR)内的序列介导蛋白质合成的转录后阻断。细胞和发育阶段特异性反式调节因子与3′UTR的相互作用是调节不同细胞类型中这种有效形态原的灵活和通用机制。我们发现,在原代和永生化组织培养细胞和转基因小鼠中,3′UTR中的超保守序列独立于启动子、编码区和3′UTR环境发挥功能。我们的研究结果表明,超保守序列是一个自主功能的转录后元件,可用于调节BMP 2和其他蛋白质的水平,同时保留组织特异性调控元件。
BMP2 is a morphogen that controls mesenchymal cell differentiation and behavior. For example, BMP2 concentration controls the differentiation of mesenchymal precursors into myocytes, adipocytes, chondrocytes, and osteoblasts. Sequences within the 3′untranslated region (UTR) of the Bmp2 mRNA mediate a post-transcriptional block of protein synthesis. Interaction of cell and developmental stage-specific trans-regulatory factors with the 3′UTR is a nimble and versatile mechanism for modulating this potent morphogen in different cell types. We show here, that an ultra-conserved sequence in the 3′UTR functions independently of promoter, coding region, and 3′UTR context in primary and immortalized tissue culture cells and in transgenic mice. Our findings indicate that the ultra-conserved sequence is an autonomously functioning post-transcriptional element that may be used to modulate the level of BMP2 and other proteins while retaining tissue specific regulatory elements.
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