Cited by 116Microtubule and mitosis dynamicsNeurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology Research

The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.

Depletion of a Microtubule-Associated Motor Protein Induces the Loss of Dendritic Identity

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Abstract

Dendrites are short stout tapering processes that are rich in ribosomes and Golgi elements, whereas axons are long thin processes of uniform diameter that are deficient in these organelles. It has been hypothesized that the unique morphological and compositional features of axons and dendrites result from their distinct patterns of microtubule polarity orientation. The microtubules within axons are uniformly oriented with their plus ends distal to the cell body, whereas microtubules within dendrites are nonuniformly oriented. The minus-end-distal microtubules are thought to arise via their specific transport into dendrites by the motor protein known as CHO1/MKLP1. According to this model, CHO1/MKLP1 transports microtubules with their minus ends leading into dendrites by generating forces against the plus-end-distal microtubules, thus creating drag on the plus-end-distal microtubules. Here we show that depletion of CHO1/MKLP1 from cultured neurons causes a rapid redistribution of microtubules within dendrites such that minus-end-distal microtubules are chased back to the cell body while plus-end-distal microtubules are redistributed forward. The dendrite grows significantly longer and thinner, loses its taper, and acquires a progressively more axon-like organelle composition. These results suggest that the forces generated by CHO1/MKLP1 are necessary for maintaining the minus-end-distal microtubules in the dendrite, for antagonizing the anterograde transport of the plus-end-distal microtubules, and for sustaining a pattern of microtubule organization necessary for the maintenance of dendritic morphology and composition. Thus, we would conclude that dendritic identity is dependent on forces generated by CHO1/MKLP1.

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Crossref · 10.1523/jneurosci.20-15-05782.2000

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Research works printed but not linked: 2

  1. Higgins D Lein PJ Osterhout DJ Johnson MI (1991) Tissue culture of mammalian autonomic neurons. in Culturing nerve cells, eds Banker G Goslin K (MIT, Cambridge, MA).
  2. Matus A (1994) MAP2 in Microtubules (Hyams JS, Lloyd CW, eds), pp 156–166. (Wiley-Liss, New York).

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Metadata

Authors
Yu, W., Cook, C., Sauter, C., Kuriyama, R., Kaplan, P. L., & Baas, P. W.
Affiliations
  • University of Wisconsin–Madison (US)
  • University of Minnesota (US)
Venue
The Journal of Neuroscience
Published
2000-08-01
Volume
20
Issue
15
Pages
5782-5791
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1583142746
Cited by
116
References
23
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 6 · 2021: 4 · 2020: 6 · 2019: 3 · 2018: 1 · 2017: 6 · 2016: 4 · 2015: 4 · 2014: 4 · 2013: 2 · 2012: 9
FWCI
2.45
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
dendritic morphology, microtubule polarity, microtubule transport, microtubule motor proteins, dendritic microtubules, ribosome distribution, anterograde transport
MeSH terms
Animals, Axons, Cells, Cultured, Dendrites, Fluorescent Dyes, Isoquinolines, Microscopy, Electron, Microtubule-Associated Proteins, Microtubules, Neurons, Oligonucleotides, Antisense, Neurofilament Proteins, Superior Cervical Ganglion, Molecular Motor Proteins, Cell Size, Rats

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