An oncogenic role for alternative NF-κB signaling in DLBCL revealed upon deregulated BCL6 expression.

An oncogenic role for alternative NF-κB signaling in DLBCL revealed upon deregulated BCL6 expression.
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DOI:
10.1016/j.celrep.2015.03.059
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发表时间:
2015-05-05
期刊:
影响因子:
8.8
通讯作者:
Rajewsky K
Rajewsky K
中科院分区:
生物学1区
文献类型:
--
作者:
Zhang B;Calado DP;Wang Z;Fröhler S;Köchert K;Qian Y;Koralov SB;Schmidt-Supprian M;Sasaki Y;Unitt C;Rodig S;Chen W;Dalla-Favera R;Alt FW;Pasqualucci L;Rajewsky K

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弥漫性大B细胞淋巴瘤(DLBCL)是一种复杂的疾病,包括多种亚型和基因谱。可能由于激活典型NF-κB活性的遗传改变的普遍存在,致癌病变激活NF-κB替代途径在DLBCL中的作用仍然难以捉摸。在这里,我们发现TRAF3的缺失/突变(可选NF-κB通路的负调节因子)发生在约15%的dlbcl中,并且它通常与BCL6易位共存,从而阻止末端B细胞分化。因此,在小鼠模型中,可选择的NF-κB通路的构成性激活与BCL6的失调在DLBCL的发展中协同作用。这项工作证明了NF-κB通路在DLBCL发展中的关键致癌作用。
Diffuse large B cell lymphoma (DLBCL) is a complex disease comprising diverse subtypes and genetic profiles. Possibly due to the prevalence of genetic alterations activating canonical NF-κB activity, a role for oncogenic lesions that activate the alternative NF-κB pathway in DLBCL has remained elusive. Here we show that deletion/mutation of TRAF3, a negative regulator of the alternative NF-κB pathway, occurs in ∼15% of DLBCLs, and that it often coexists with BCL6 translocation, which prevents terminal B cell differentiation. Accordingly, in a mouse model constitutive activation of the alternative NF-κB pathway cooperates with BCL6 deregulation in DLBCL development. This work demonstrates a key oncogenic role for the alternative NF-κB pathway in DLBCL development.
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