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Creation and testing of a new, local microtubule-disruption tool based on the microtubule-severing enzyme, katanin p60

机译:基于微管切割酶,Katanin P60的新局部微管破坏工具的创建和测试

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摘要

Current methods to disrupt the microtubule cytoskeleton do not easily provide rapid, local control with standard cell manipulation reagents. Here, we develop a new microtubule-disruption tool based on katanin p60 severing activity and demonstrate proof-of-principle by targeting it to kinetochores in Drosophila melanogaster S2 cells. Specifically, we show that human katanin p60 can remove microtubule polymer mass in S2 cells and an increase in misaligned chromosomes when globally overexpressed. When katanin p60 was targeted to the kinetochores via Mis12, we were able to recapitulate the misalignment only when using a phosphorylation-resistant mutant katanin p60. Our results demonstrate that targeting an active version of katanin p60 to the kinetochore can reduce the fidelity of achieving full chromosome alignment in metaphase and could serve as a microtubule disruption tool for the future.
机译:目前破坏微管细胞骨架的方法不容易提供用标准细胞操纵试剂的快速,局部对照。 在这里,我们通过基于Katanin P60切断活动的新微管破坏工具,并通过靶向德罗斯科唑唑唑类细胞S2细胞中的Kinetochores来证明原则上的原则。 具体而言,我们表明人类Katanin P60可以在S2细胞中除去微管聚合物质量,并且在全球过度表达时增加未对准的染色体。 当Katanin P60通过MIS12靶向KINetochores时,我们只能在使用耐磷酸化抗突变体Katanin P60时重新对流程。 我们的结果表明,靶向Katanin P60至Kinetochore的活跃版可以降低在中期实现全染色体对准的保真度,并可作为未来的微管中断工具。

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