Journal article
The nuclear/mitotic apparatus protein NuMA is a component of the somatodendritic microtubule arrays of the neuron
Journal of neurocytology, v 27(12), pp 887-899
Dec 1998
PMID: 10659681
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Neurons are terminally post-mitotic cells that utilize their microrubule arrays for the growth and maintenance of axons and dendrites rather than for the formation of mitotic spindles. Recent studies from our laboratory suggest that the mechanisms that organize the axonal and dendritic microtubule arrays may be variations on the same mechanisms that organize the mitotic spindle in dividing cells. In particular, we have identified molecular motor proteins that serve analogous functions in the establishment of these seemingly very different microtubule arrays. In the present study, we have sought to determine whether a non-motor protein termed NuMA is also a component of both systems. NuMA is a ~230 kDa structural protein that is present exclusively in the nucleus during interphase. During mitosis, NuMA forms aggregates that interact with microtubules and certain motor proteins. As a result of these interactions, NuMA is thought to draw together the minus-ends of microtubules, thereby helping to organize them into a bipolar spindle. In contrast to mitotic cells, post-mitotic neurons display NuMA both in the nucleus and in the cytoplasm. NuMA appears as multiple small particles within the somatodendritic compartment of the neuron, where its levels increase during early dendritic differentation. A partial but not complete colocalization with minus-ends of microtubules is suggested by the distribution of the particles during development and during drug treatments that alter the microtubule array. These observations provide an initial set of clues regarding a potentially important function of NuMA in the organization of microtubules within the somatodendritic compartment of the neuron.
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Details
- Title
- The nuclear/mitotic apparatus protein NuMA is a component of the somatodendritic microtubule arrays of the neuron
- Creators
- Lotfi Ferhat - Department of Anatomy The University of Wisconsin Medical School Madison WI 53706Crist Cook - Department of Anatomy The University of Wisconsin Medical School Madison WI 53706Ryoko Kuriyama - Department of Cell Biology and Neuroanatomy The University of Minnesota Medical School Minneapolis MN 55455Peter Baas - Department of Anatomy The University of Wisconsin Medical School Madison WI 53706
- Publication Details
- Journal of neurocytology, v 27(12), pp 887-899
- Publisher
- Kluwer Academic Publishers; Boston
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Neurobiology and Anatomy
- Web of Science ID
- WOS:000083347100003
- Scopus ID
- 2-s2.0-0032296607
- Other Identifier
- 991014877991904721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Cell Biology
- Neurosciences