v-erbA oncogene activation entails the loss of hormone-dependent regulator activity of c-erbA

v-erbA oncogene activation entails the loss of hormone-dependent regulator activity of c-erbA
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v-erbA 癌基因激活导致 c-erbA 激素依赖性调节活性丧失

DOI:
10.1016/0092-8674(90)90068-p
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发表时间:
1990
期刊:
影响因子:
64.5
通讯作者:
H. Beug
H. Beug
中科院分区:
生物学1区
文献类型:
--
作者:
M. Zenke;A. Muñoz;J. Sap;B. Vennström;H. Beug

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v-erbA癌基因是阿夫兰成红细胞增多症病毒的两个癌基因之一,有效地阻断红细胞分化并抑制红细胞特异性基因转录。在这里,我们表明,过表达的甲状腺激素受体c-erbll有效地调节红细胞分化和红细胞特异性基因表达的T3依赖的方式,当引入到红细胞通过一个tetrovirus。与此相反,内源性甲状腺激素受体不会影响红细胞分化。对一系列嵌合v-lc-erbA蛋白的分析表明,v-erbA癌蛋白丧失了一种类型的甲状腺激素受体功能(响应于Ta调节红细胞基因转录),但结构性地显示另一种功能:在缺乏T3的情况下抑制转录。负责v-erbA的酶依赖性调节活性丧失的区域已经被定位到c-erbA的C-末端,包含一簇高度保守的氨基酸残基,其具有形成两亲性α-螺旋的潜力。
The v-erbA oncogene, one of the two oncogenes of the avlan erythroblastosis virus, efficiently blocks erythroid differentiation and suppresses erythrocyte-specific gene transcription. Here we show that the overexpressed thyroid hormone receptor c-erbll effectively modulates erythroid differentiatlon and erythrocytespecific gene expression in a T3-dependent fashion, when introduced into erythroid cells via a tetrovirus. In contrast, the endogenous thyroid hormone receptor does not detectably affect erythroid differentiation. The analysis of a series of chimeric v-lc-erbA proteins suggests that the v-erbA oncoprotein has lost one type of thyroid hormone receptor function (regulating erythrocyte gene transcription in response to Ta), but constltutively displays another function: it represses transcription in the absence of T3. The region responsible for the loss of hormone-dependent regulator activity of v-erbA has been mapped to the very C-terminus of c-erbA, encompassing a cluster of highly conserved amino acid residues wfth the potential to form an amphipathic a-helix.
S13,一种快速致癌的复制缺陷型禽逆转录病毒。
DOI: 10.1016/0042-6822(85)90209-0
发表时间: 1985
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影响因子: 3.7
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发表时间: 1986
期刊: Blood
影响因子: 20.3
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env-sea 癌基因产物的异常糖基化会抑制其蛋白水解并阻断其转化能力。
DOI: --
发表时间: 1988
期刊: Oncogene
影响因子: 8
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