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首页> 外文期刊>Investigational New Drugs >Effect of the Antitumor Drug Vinblastine on Nuclear βII-tubulin in Cultured Rat Kidney Mesangial Cells
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Effect of the Antitumor Drug Vinblastine on Nuclear βII-tubulin in Cultured Rat Kidney Mesangial Cells

机译:抗肿瘤药长春碱对大鼠肾肾小球系膜细胞核βII-微管蛋白的影响

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摘要

Tubulin, the main component of microtubules, is a major target for antitumor drugs such as vinblastine. We have recently discovered that the βII isotype of tubulin is present in the nuclei of cultured rat kidney mesangial cells, smooth-muscle-like cells present in the renal glomerular mesangium (Walss C, Kreisberg JI, Ludueña RF: Cell Motil Cytoskeleton 42: 274–284, 1999). Here, we have investigated the effect of vinblastine on nuclear βII-tubulin in these cells. We have found that, at concentrations of 15 nM and higher, vinblastine caused a reversible loss of βII-tubulin from the nucleus. Our results raise the possibility that nuclear βII-tubulin constitutes a population of tubulin that could be a novel target for antitumor drugs such as vinblastine.
机译:微管的主要成分微管蛋白是长春碱等抗肿瘤药物的主要靶标。我们最近发现,培养的大鼠肾小球系膜细胞的核中存在微管蛋白的βII同种型,肾小球肾小球系膜中存在平滑肌样细胞(Walss C,Kreisberg JI,LudueñaRF:Cell Motil Cytoskeleton 42:274–284,1999)。在这里,我们研究了长春碱对这些细胞核βII-微管蛋白的作用。我们发现,在浓度为15 nM或更高的情况下,长春碱会引起细胞核中βII-subtubulin的可逆损失。我们的结果增加了核βII微管蛋白构成微管蛋白种群的可能性,这些微管蛋白可能成为抗肿瘤药物如长春碱的新靶标。

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