C-erbB and the epidermal growth-factor receptor: a molecule with dual identity.
C-erbB and the epidermal growth-factor receptor: a molecule with dual identity.
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C-erbB 和表皮生长因子受体:具有双重身份的分子。
DOI:
10.1016/0304-419x(89)90003-6
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发表时间:
1989
期刊:
影响因子:
--
通讯作者:
Kung,HJ
中科院分区:
文献类型:
--
作者:
Maihle,NJ;Kung,HJ
During the late 1970s and early 1980s, it became apparent that'the genetic sequences of acutely transforming retroviruses responsible for cellular transformation (viral oncogenes, v-onc) were actually normal cellular sequences pirated via a process known as transduction [1, 2]. The evolution of this concept quickly gave rise to the identification of a fairly large number of cellular'proto-oncogenic'sequences, ie, cellular sequences homologous to the oncogenes of the acutely transforming viruses (cf. Refs. 3 and 4 for reviews), c-erbB was, therefore, originally identified as the cellular homolog of the retroviral transforming gene, o-erbB [5]. Two acutely transforming retroviruses, AEV-ES4 and AEV-R, which have been studied since the early part of this century, were the original source of viral erbB sequences [6-8]. These two avian erythroblastosis viruses probably represent independent isolates of a virtually identical viral strain. Both of these viruses express two viral oncogenes: v-erbA and v-erbB. These two'oncogenes' were apparently captured during independent recombination events, v-erbA is not (structurally linked or) related to v-erbB, and is not oncogenic when expressed independently, although it can augment v-erbB-mediated transformation events [9-13]. Although the contribution of the o-erbA product to the transformed phenotype is poorly understood at this time, it is clear that the cellular homolog of this oncogene is a member of the steroid hormone receptor family and the avian c-erbA product appears to be functionally equivalent to the human T 3 receptor [14, 15]. In contrast, expression of the v-erbB product is sufficient to transform both erythroblasts and fibroblasts in vitro, and to induce erythroleukemia and fibrosarcomas, in vivo [9, 16, 17]. Identification of the cellular homolog of v-erbB has revealed a large gene spanning greater than 20 kb of genomic sequence [18]. Identification of the normal cellular erbB homolog was rapidly followed by the observation of structural homology between the viral erbB product and a portion of the human epidermal growth-factor receptor [19]. Further structural analyses have revealed that the normal avian c-erbB product and the human epidermal growth-factor receptor are structurally homologous (Refs. 20-22; and unpublished data), and the avian c-erbB product may represent a functional equivalent of this growthfactor receptor.In this study, we compare the structural and functional properties of the oncogenic products to the properties of the normal receptor. Since the properties of the human EGF receptor have been reviewed extensively [23-25] in this report, we emphasize the properties of the avian oncogenic products. We also critically examine the molecular mechanisms involved in activating the oncogenic potential of this growth-factor receptor, and finally, consider the possible modes of action involved in relaying both the normal and aberrant mitogenic signals propagated by these molecules.
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DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Russell,DS;Gherzi,R;Johnson,EL;Chou,CK;Rosen,OM
通讯作者:
Rosen,OM
影响因子:
4.4
作者:
S. Hughes;E. Kosik;A. Fadly;D. Salter;L. Crittenden
通讯作者:
L. Crittenden
影响因子:
4.8
作者:
S. Cohen;R. Fava
通讯作者:
R. Fava
DOI:
10.1016/s0021-9258(17)38602-7
发表时间:
1985
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Downward;M. Waterfield;P. Parker
通讯作者:
P. Parker
影响因子:
11.4
作者:
A. Sergeant;S. Saule;D. Leprince;A. Begue;C. Rommens;D. Stéhelin
通讯作者:
D. Stéhelin