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紫杉醇诱导非洲爪蟾卵有丝分裂提取物中的微管星状体:对磷酸化因子和胞质动力蛋白的需求

Taxol-induced microtubule asters in mitotic extracts of Xenopus eggs: requirement for phosphorylated factors and cytoplasmic dynein.

作者信息

Verde F, Berrez J M, Antony C, Karsenti E

机构信息

European Molecular Biology Laboratory, Cell Biology Programme, Heidelberg, Germany.

出版信息

J Cell Biol. 1991 Mar;112(6):1177-87. doi: 10.1083/jcb.112.6.1177.

DOI:10.1083/jcb.112.6.1177
PMID:1671864
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2288889/
Abstract

Taxol, a microtubule stabilizing drug, induces the formation of numerous microtubule asters in the cytoplasm of mitotic cells (De Brabander, M., G. Geuens, R. Nuydens, R. Willebrords, J. DeMey. 1981. Proc. Natl. Acad. Sci. USA. 78:5608-5612). The center of these asters share with spindle poles some characteristics such as the presence of centrosomal material and calmodulin. We have recently reproduced the assembly of taxol asters in a cell-free system (Buendia, B., C. Antony, F. Verde, M. Bornens, and E. Karsenti. 1990. J. Cell Sci. 97:259-271) using extracts of Xenopus eggs. In this paper, we show that taxol aster assembly requires phosphorylation, and that they do not grow from preformed centers, but rather by a reorganization of microtubules first crosslinked into bundles. This process seems to involve sliding of microtubules along each other and we show that cytoplasmic dynein is required for taxol aster assembly. This result provides a possible functional basis to the recent findings, that dynein is present in the spindle and enriched near spindle poles (Pfarr, C. M., M. Cove, P. M. Grissom, T. S. Hays, M. E. Porter, and J. R. McIntosh. 1990. Nature (Lond.). 345:263-265; Steuer, E. R., L. Wordeman, T. A. Schroer, and M. P. Sheetz. 1990. Nature (Lond.). 345:266-268).

摘要

紫杉醇是一种微管稳定药物,可诱导有丝分裂细胞的细胞质中形成大量微管星状体(德·布拉班德,M.,G. 格恩斯,R. 努伊登斯,R. 维勒布罗德,J. 德梅伊。1981年。美国国家科学院院刊。78:5608 - 5612)。这些星状体的中心与纺锤体极具有一些共同特征,如存在中心体物质和钙调蛋白。我们最近利用非洲爪蟾卵提取物在无细胞体系中重现了紫杉醇星状体的组装(布恩迪亚,B.,C. 安东尼,F. 韦尔代,M. 博尔嫩斯,和E. 卡尔森蒂。1990年。细胞科学杂志。97:259 - 271)。在本文中,我们表明紫杉醇星状体的组装需要磷酸化,而且它们并非从预先形成的中心生长而来,而是通过首先交联成束的微管的重新组织形成。这个过程似乎涉及微管彼此之间的滑动,并且我们表明胞质动力蛋白是紫杉醇星状体组装所必需的。这一结果为最近的发现提供了一个可能的功能基础,即动力蛋白存在于纺锤体中且在纺锤体极附近富集(普法尔,C. M.,M. 科夫,P. M. 格里森,T. S. 海斯,M. E. 波特,和J. R. 麦金托什。1990年。自然(伦敦)。345:263 - 265;施图尔,E. R.,L. 沃德曼,T. A. 施罗尔,和M. P. 希茨。1990年。自然(伦敦)。345:266 - 268)。

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Taxol-induced microtubule asters in mitotic extracts of Xenopus eggs: requirement for phosphorylated factors and cytoplasmic dynein.紫杉醇诱导非洲爪蟾卵有丝分裂提取物中的微管星状体:对磷酸化因子和胞质动力蛋白的需求
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本文引用的文献

1
Interconversion of metaphase and interphase microtubule arrays, as studied by the injection of centrosomes and nuclei into Xenopus eggs.通过将中心体和细胞核注入非洲爪蟾卵来研究中期和间期微管阵列的相互转化。
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Phosphoproteins are components of mitotic microtubule organizing centers.磷蛋白是有丝分裂微管组织中心的组成部分。
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Centriole distribution during tripolar mitosis in Chinese hamster ovary cells.中国仓鼠卵巢细胞三极有丝分裂过程中的中心粒分布
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4
Taxol induces the assembly of free microtubules in living cells and blocks the organizing capacity of the centrosomes and kinetochores.紫杉醇可诱导活细胞中游离微管的组装,并阻断中心体和动粒的组织能力。
Proc Natl Acad Sci U S A. 1981 Sep;78(9):5608-612. doi: 10.1073/pnas.78.9.5608.
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The effect of taxol on living eggs of Xenopus laevis.紫杉醇对非洲爪蟾活卵的影响。
Dev Biol. 1980 Dec;80(2):489-94. doi: 10.1016/0012-1606(80)90421-2.
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Taxol stabilizes microtubules in mouse fibroblast cells.紫杉醇可使小鼠成纤维细胞中的微管稳定。
Proc Natl Acad Sci U S A. 1980 Mar;77(3):1561-5. doi: 10.1073/pnas.77.3.1561.
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Plant antitumor agents. VI. The isolation and structure of taxol, a novel antileukemic and antitumor agent from Taxus brevifolia.植物抗肿瘤剂。VI. 紫杉醇的分离与结构,一种从短叶红豆杉中提取的新型抗白血病和抗肿瘤剂。
J Am Chem Soc. 1971 May 5;93(9):2325-7. doi: 10.1021/ja00738a045.
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Protoplasma. 1969;68(1):1-22. doi: 10.1007/BF01247894.
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Ultrastructural analysis of the initiation and development of cytasters in sea-urchin eggs.海胆卵中星体的起始与发育的超微结构分析
J Cell Sci. 1985 Feb;73:261-78. doi: 10.1242/jcs.73.1.261.
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Influence of the centrosome on the structure of nucleated microtubules.中心体对有核微管结构的影响。
J Cell Biol. 1985 Apr;100(4):1185-91. doi: 10.1083/jcb.100.4.1185.