Characterization of isotype-specific regions of five classes of canine beta-tubulin and their expression in several tissues and cell culture.

Characterization of isotype-specific regions of five classes of canine beta-tubulin and their expression in several tissues and cell culture.
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五类犬β-微管蛋白同种型特异性区域的表征及其在几种组织和细胞培养物中的表达。

DOI:
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发表时间:
2001
影响因子:
1.2
通讯作者:
H. Matsuda
H. Matsuda
中科院分区:
农林科学4区
文献类型:
--
作者:
K. Arai;K. Maruo;K. Ara;K. Uehara;H. Matsuda

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用3 '-RACE技术对犬β-微管蛋白1、II、III、IVa和IVb类基因型特异性区域的结构进行了表征,并用核糖核酸酶保护试验(RPA)检测了这些基因型在犬组织中的表达。此外,建立了恶性乳腺肿瘤衍生的骨肉瘤样细胞系,并分析了紫杉醇耐药亚系中β-微管蛋白同种型表达的改变。在对应于I类,II类和IVb类的同种型特异性区域中的推导的氨基酸序列与人类和小鼠的相同,但在III类和IVa类中的氨基酸序列在物种间略有差异。RPA显示I类和IVb类广泛分布,但II类、III类和IVa类仅限于大脑。由于RPA可以清楚地区分Ⅳ a类和Ⅳ b类的表达,因此被认为比北方印迹法更适用于β-微管蛋白同种型表达的分析。在体外,紫杉醇耐药的亚系表现出显着增加,在类IVa相比,紫杉醇敏感的细胞,这表明类IVa的表达改变与紫杉醇耐药在这些细胞系。
The structure of isotype-specific regions of classes 1, II, III, IVa and IVb of canine beta-tubulin was characterized by 3'-RACE and the expression of these isotypes in canine tissues was examined by ribonuclease protection assay (RPA). Furthermore, a malignant mammary tumor-derived osteosarcoma-like cell line was established and the altered expression of beta-tubulin isotypes in taxol-resistant sublines was analyzed. The deduced amino acid sequences in isotype-specific regions corresponding to classes I, II and IVb were identical to those of humans and mice, but those in classes III and IVa showed slight differences among species. RPA revealed that classes I and IVb were widely distributed, but classes II, III and IVa were restricted to the brain. Because RPA could clearly distinguish the expression of class IVa from that of class IVb, it was thought to be more useful than northern blot for analysis of beta-tubulin isotype expression. In vitro, taxol-resistant sublines displayed a significant increase in class IVa as compared with taxol-sensitive cells, suggesting that altered expression of class IVa was associated with taxol resistance in these cell lines.
由于雌莫司汀耐药,人前列腺癌细胞中 β(III)- 和 β(IVa)-微管蛋白同位素增加。
DOI: --
发表时间: 1996
期刊: Cancer research.
影响因子: --
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通讯作者: Hudes,GR
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发表时间: 1998
影响因子: 2
作者:
S. Steingold;N. Sharp;M. Mcgahan;C. S. Hughes;S. Dunn;R. Page
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DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Banerjee,A;Roach,MC;Trcka,P;Luduena,RF
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从牛脑中纯化的β-微管蛋白同种型具有不同的相对稳定性。
DOI: 10.1021/bi972763d
发表时间: 1998
期刊: Biochemistry
影响因子: 2.9
作者:
Schwarz,PM;Liggins,JR;Ludueña,RF
通讯作者: Ludueña,RF