Tyrosine kinase expression profiles of chicken erythro-progenitor cells and oncogene-transformed erythroblasts.

Tyrosine kinase expression profiles of chicken erythro-progenitor cells and oncogene-transformed erythroblasts.
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鸡红细胞祖细胞和癌基因转化的成红细胞的酪氨酸激酶表达谱。

DOI:
10.1007/bf02258362
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发表时间:
1998
影响因子:
11
通讯作者:
Kung,HJ
Kung,HJ
中科院分区:
医学1区
文献类型:
--
作者:
Robinson,D;Chen,HC;Li,D;Yustein,JT;He,F;Lin,WC;Hayman,MJ;Kung,HJ

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酪氨酸激酶参与红系细胞的生长和分化。已知某些酪氨酸激酶如erbB和sea的异常表达和结构改变可引发红细胞白血病的发展。为了更好地理解参与红细胞分化和白血病转化的信号转导途径,我们应用了最近开发的酪氨酸激酶谱技术来鉴定正常鸡红细胞祖细胞中表达的酪氨酸激酶和一些新的丝氨酸/苏氨酸激酶,这些酪氨酸激酶响应TGFα (TGFα- eb),以及被编码v-erbB (v-erbB- eb)和v-sea (v-sea- eb)的病毒转化的红母细胞。我们的研究结果表明,非受体酪氨酸激酶Abl、Fyn、Lyn、Btk和Csk在所有三种细胞类型中均有表达。Btk(一种与布鲁顿综合征有关的酪氨酸激酶)在携带v-erbB的禽成红细胞病病毒(AEV-ES4)转化的类红细胞系6C2中表达水平异常高。我们还发现了一种新的与ste -20相关的丝氨酸/苏氨酸激酶KFC,它在tgf α刺激的红系祖细胞和v-sea转化的红母细胞中都大量表达。基于激酶结构域的序列同源性,KFC似乎是ste -20样激酶新亚家族的第一个成员。
Tyrosine kinases are implicated in the growth and differentiation of erythroid cells. Aberrant expression and structural alterations of certain tyrosine kinases, such as erbB and sea, are known to trigger erythroleukemia development. To facilitate our understanding of the signal transduction pathways involved in erythroid differentiation and leukemic transformation, we have applied a recently developed tyrosine kinase profile technique to identify the tyrosine kinases and some novel serine/threonine kinases expressed in normal chicken erythroid progenitor cells that respond to TGFα (TGFα-EB), and erythroblasts transformed by viruses encoding v-erbB (v-erbB-EB) and v-sea (v-sea-EB). Our results reveal that the non-receptor tyrosine kinases, Abl, Fyn, Lyn, Btk and Csk, are expressed in all three cell types. The expression level of Btk, a tyrosine kinase implicated in Bruton's syndrome, is exceptionally high in the erythroblastoid cell line 6C2, transformed by the v-erbB carrying avian erythroblastosis virus, AEV-ES4. We have also uncovered a new STE-20-related serine/threonine kinase, KFC, which is abundantly expressed in both the TGFα-stimulated erythroid progenitor cells and v-sea-transformed erythroblasts. Based on sequence homology of the kinase domain, KFC appears to be the first member of a new subfamily of STE-20-like kinases.
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