PAF and EZH2 induce Wnt/β-catenin signaling hyperactivation.
PAF and EZH2 induce Wnt/β-catenin signaling hyperactivation.
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DOI:
10.1016/j.molcel.2013.08.028
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发表时间:
2013-10-24
期刊:
影响因子:
16
通讯作者:
Park, Jae-Il
中科院分区:
文献类型:
--
作者:
Jung, Hae-Yun;Jun, Sohee;Lee, Moonsup;Kim, Han-Cheon;Wang, Xin;Ji, Hong;McCrea, Pierre D.;Park, Jae-Il
Fine-control of Wnt signaling is essential for various cellular and developmental decision making processes. However, deregulation of Wnt signaling leads to pathological consequences including cancer. Here, we identify a novel function of PAF, a component of translesion DNA synthesis, in modulating Wnt signaling. PAF is specifically overexpressed in colon cancer cells and intestinal stem cells, and required for colon cancer cell proliferation. In Xenopus laevis, ventrovegetal expression of PAF hyperactivates Wnt signaling, developing secondary axis with β-catenin target gene upregulation. Upon Wnt signaling activation, PAF is dissociated from PCNA, and directly binds to β-catenin. Then, PAF recruits EZH2 to β-catenin transcriptional complex, and specifically enhances Wnt target gene transactivation, independently of EZH2's methyltransferase activity. In mouse, conditional expression of PAF induces intestinal neoplasia via Wnt signaling hyperactivation. Our studies reveal an unexpected role of PAF in regulating Wnt signaling, and propose a novel regulatory mechanism of Wnt signaling during tumorigenesis.
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影响因子:
50.3
作者:
Chang CJ;Yang JY;Xia W;Chen CT;Xie X;Chao CH;Woodward WA;Hsu JM;Hortobagyi GN;Hung MC
通讯作者:
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DOI:
10.1073/pnas.0409875102
发表时间:
2005-02-08
影响因子:
11.1
作者:
Kuzmichev, A;Margueron, R;Reinberg, D
通讯作者:
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DOI:
10.1073/pnas.1106136108
发表时间:
2011-06-14
影响因子:
11.1
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影响因子:
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影响因子:
3.7
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