This chapter describes in summary form some of the most important research on chromosome segregation, from the discovery and naming of mitosis in the nineteenth century until around 1990. It gives both historical and scientific background for the nine chapters that follow, each of which provides an up-to-date review of a specific aspect of mitotic mechanism. Here, we trace the fruits of each new technology that allowed a deeper understanding of mitosis and its underlying mechanisms. We describe how light microscopy, including phase, polarization, and fluorescence optics, provided descriptive information about mitotic events and also enabled important experimentation on mitotic functions, such as the dynamics of spindle fibers and the forces generated for chromosome movement. We describe studies by electron microscopy, including quantitative work with serial section reconstructions. We review early results from spindle biochemistry and genetics, coupled to molecular biology, as these methods allowed scholars to identify key molecular components of mitotic mechanisms. We also review hypotheses about mitotic mechanisms whose testing led to a deeper understanding of this fundamental biological event. Our goal is to provide modern scientists with an appreciation of the work that has laid the foundations for their current work and interests.
Bibliographical noteFunding Information:
The structural work from the lab of J. Richard McIntosh was supported by numerous grants from the NIH and the ACS. Thomas Hays also acknowledges his NIH, ACS, AHA and Pew Foundation support for related research on mitosis and motor proteins. The authors thank Edward Salmon, Robert Margolis, and the reviewers for their critical readings of the manuscript and many helpful suggestions. We also thank Manfred Schliwa for help in understanding the contributions of early scholars of mitosis who wrote in German.
© 2016 by the authors; licensee MDPI, Basel, Switzerland.
- Mitotic spindle
- Motor enzyme
- Tubulin dynamics