Insights into the micromechanical properties of the metaphase spindle

Yuta Shimamoto, Yusuke T. Maeda, Shin'Ichi Ishiwata, Albert J. Libchaber, Tarun M. Kapoor

研究成果: ジャーナルへの寄稿学術誌査読

76 被引用数 (Scopus)

抄録

The microtubule-based metaphase spindle is subjected to forces that act in diverse orientations and over a wide range of timescales. Currently, we cannot explain how this dynamic structure generates and responds to forces while maintaining overall stability, as we have a poor understanding of its micromechanical properties. Here, we combine the use of force-calibrated needles, high-resolution microscopy, and biochemical perturbations to analyze the vertebrate metaphase spindle's timescale- and orientation-dependent viscoelastic properties. We find that spindle viscosity depends on microtubule crosslinking and density. Spindle elasticity can be linked to kinetochore and nonkinetochore microtubule rigidity, and also to spindle pole organization by kinesin-5 and dynein. These data suggest a quantitative model for the micromechanics of this cytoskeletal architecture and provide insight into how structural and functional stability is maintained in the face of forces, such as those that control spindle size and position, and can result from deformations associated with chromosome movement. PaperFlick:

本文言語英語
ページ(範囲)1062-1074
ページ数13
ジャーナルCell
145
7
DOI
出版ステータス出版済み - 6月 24 2011
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 生化学、遺伝学、分子生物学(全般)

フィンガープリント

「Insights into the micromechanical properties of the metaphase spindle」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル