BRAF 和 RAF1 融合介导的信号转导
中文名称
通路描述
除了更普遍的点突变外,BRAF 和 RAF1 还因发生转位事件导致截短或融合产物而受到激活(Jones 等人,2008;Cin 等人,2011;Palanisamy 等人,2010;Ciampi 等人,2005;Stransky 等人,2014;Hutchinson 等人,2013;Zhang 等人,2013;Lee 等人,2012;Ricarte-Filho 等人,2013;综述 Lavoie 和 Therrien 等人,2015)。总体而言,这些事件将 BRAF 或 RAF1 的 C 端激酶域置于来自伴侣蛋白的 N 端序列下游。这消除了 RAF 蛋白 N 端区域的自抑制作用。此外,一些但并非所有融合伴侣蛋白已被证明含有螺旋 - 螺旋或二聚化结构域。综上所述,融合蛋白被认为以恒常性二聚化并激活下游信号转导(Jones 等人,2008;Lee 等人,2012;Hutchinson 等人,2013;Ciampi 等人,2005;Cin 等人,2011;Stransky 等人,2014)。
英文描述
Signaling by BRAF and RAF1 fusions In addition to the more prevalent point mutations, BRAF and RAF1 are also subject to activation as a result of translocation events that yield truncated or fusion products (Jones et al, 2008; Cin et al, 2011; Palanisamy et al, 2010; Ciampi et al, 2005; Stransky et al, 2014; Hutchinson et al, 2013; Zhang et al, 2013; Lee et al, 2012; Ricarte-Filho et al, 2013; reviewed in Lavoie and Therrien et al, 2015). In general these events put the C-terminal kinase domain of BRAF or RAF1 downstream of an N-terminal sequence provided by a partner protein. This removes the N-terminal region of the RAF protein, relieving the autoinhibition imposed by this region of the protein. In addition, some but not all of the fusion partner proteins have been shown to contain coiled-coil or other dimerization domains. Taken together, the fusion proteins are thought to dimerize constitutively and activate downstream signaling (Jones et al, 2008; Lee et al, 2012; Hutchinson et al, 2013; Ciampi et al, 2005; Cin et al, 2011; Stransky et al, 2014).
所含基因
38 个基因