The opposing roles of Wnt-5a in cancer.

The opposing roles of Wnt-5a in cancer.
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DOI:
10.1038/sj.bjc.6605174
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发表时间:
2009-07-21
影响因子:
8.8
通讯作者:
--
中科院分区:
医学1区
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WNT-5a是研究最多的非典范WNT之一,几乎涉及到非典范WNT信号的所有方面。在癌症的发展方面,直到最近,WNT-5a一直生活在其特征更好的亲戚的阴影下。这在很大程度上是因为它显然无法通过典型的β-连环蛋白途径转换细胞或信号,而这一途径在癌症,特别是结直肠癌中非常重要。最近在广泛的人类肿瘤中的研究表明,WNT-5a在恶性进展中发挥了关键作用,但WNT-5a是否具有促进肿瘤或抑制肿瘤的作用存在相互矛盾的证据。新出现的证据表明,WNT-5a的功能可以根据关键受体的可用性而发生巨大变化。因此,这些受体的存在或缺失可能在某种程度上解释了WNT-5a在不同癌症中的相互冲突的作用。该综述总结了我们目前对WNT-5a与癌症的认识。
Wnt-5a is one of the most highly investigated non-canonical Wnts and has been implicated in almost all aspects of non-canonical Wnt signalling. In terms of cancer development, Wnt-5a has, until recently, lived in the shadow of its better-characterised relatives. This was largely because of its apparent inability to transform cells or signal through the canonical β-catenin pathway that is so important in cancer, particularly colorectal cancer. Recent work in a wide range of human tumours has pointed to a critical role for Wnt-5a in malignant progression, but there is conflicting evidence whether Wnt-5a has a tumour-promoting or -suppressing role. Emerging evidence suggests that the functions of Wnt-5a can be drastically altered depending on the availability of key receptors. Hence, the presence or absence of these receptors may go some way to explain the conflicting role of Wnt-5a in different cancers. This review summarises our current understanding of Wnt-5a and cancer.
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