Wwp2 is essential for palatogenesis mediated by the interaction between Sox9 and mediator subunit 25.

Wwp2 is essential for palatogenesis mediated by the interaction between Sox9 and mediator subunit 25.
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DOI:
10.1038/ncomms1242
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发表时间:
2011
影响因子:
16.6
通讯作者:
Akiyama, Haruhiko
Akiyama, Haruhiko
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Nakamura, Yukio;Yamamoto, Koji;He, Xinjun;Otsuki, Bungo;Kim, Youngwoo;Murao, Hiroki;Soeda, Tsunemitsu;Tsumaki, Noriyuki;Deng, Jian Min;Zhang, Zhaoping;Behringer, Richard R.;de Crombrugghe, Benoit;Postlethwait, John H.;Warman, Matthew L.;Nakamura, Takashi;Akiyama, Haruhiko

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Sox9 是软骨特异性细胞外基质基因的直接转录激活剂,在软骨形成中具有重要作用。 SOX9 基因内或周围的突变会导致 Campomelic 发育不良或 Pierre Robin 序列。然而,软骨形成中依赖于 Sox9 的转录控制仍然很大程度上未知。在这里,我们将 Wwp2 确定为 Sox9 的直接目标。 Wwp2 与 Sox9 发生物理相互作用,并通过其核易位与 Sox9 转录活性相关。使用 cDNA 文库进行的酵母双杂交筛选表明,Wwp2 与 Med25(介体复合物的一个组成部分)相互作用。 Wwp2 对 Sox9 转录活性的正向调节是通过 Sox9 和 Med25 之间的结合介导的。在斑马鱼中,吗啉介导的 wwp2 或 med25 敲低会诱导腭畸形,这与 sox9 突变体中的情况相当。这些结果提供了证据,证明 Sox9、Wwp2 和 Med25 之间的调节相互作用定义了形成腭中软骨形成的 Sox9 转录机制。
Sox9 is a direct transcriptional activator of cartilage-specific extracellular matrix genes and has essential roles in chondrogenesis. Mutations in or around the SOX9 gene cause campomelic dysplasia or Pierre Robin Sequence. However, Sox9-dependent transcriptional control in chondrogenesis remains largely unknown. Here we identify Wwp2 as a direct target of Sox9. Wwp2 interacts physically with Sox9 and is associated with Sox9 transcriptional activity via its nuclear translocation. A yeast two-hybrid screen using a cDNA library reveals that Wwp2 interacts with Med25, a component of the Mediator complex. The positive regulation of Sox9 transcriptional activity by Wwp2 is mediated by the binding between Sox9 and Med25. In zebrafish, morpholino-mediated knockdown of either wwp2 or med25 induces palatal malformation, which is comparable to that in sox9 mutants. These results provide evidence that the regulatory interaction between Sox9, Wwp2 and Med25 defines the Sox9 transcriptional mechanisms of chondrogenesis in the forming palate.
DOI: 10.1083/jcb.200408155
发表时间: 2005-01-03
期刊: The Journal of cell biology
影响因子: --
作者:
Martin-Serrano J;Eastman SW;Chung W;Bieniasz PD
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发表时间: 1998-10-01
期刊: EMBO JOURNAL
影响因子: 11.4
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影响因子: 5.3
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发表时间: 2005-10-11
影响因子: 11.1
作者:
Akiyama, H;Kim, JE;de Crombrugghe, B
通讯作者: de Crombrugghe, B