Journal article
Expression of the mitotic motor protein CHO1/MKLP1 in postmitotic neurons
The European journal of neuroscience, v 10(4), pp 1383-1393
Apr 1998
PMID: 9749792
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The kinesin‐related motor protein CHO1/MKLP1 was initially thought to be expressed only in mitotic cells, where it presumably transports oppositely oriented microtubules relative to one another in the spindle mid‐zone. We have recently shown that CHO1/MKLP1 is also expressed in cultured neuronal cells, where it is enriched in developing dendrites (Sharp et al. 1997a) J. Cell Biol., 138, 833–843]. The putative function of CHO1/MKLP1 in these postmitotic cells is to intercalate minus‐end‐distal microtubules among oppositely oriented microtubules within developing dendrites, thereby establishing their non‐uniform microtubule polarity pattern. Here we used in situ hybridization to determine whether CHO1/MKLP1 is expressed in a variety of rodent neurons both in vivo and in vitro. These analyses revealed that CHO1/MKLP1 is expressed within various neuronal populations of the brain including those in the cerebral cortex, hippocampus, olfactory bulb and cerebellum. The messenger ribonucleic acid (mRNA) levels are high within these neurons well after the completion of their terminal mitotic division and throughout the development of their dendrites. After this, the levels decrease and are relatively low within the adult brain. Parallel analyses on developing hippocampal neurons in culture indicate that the levels of expression increase dramatically just prior to dendritic development, and then decrease somewhat after the dendrites have differentiated. Dorsal root ganglion neurons, which generate axons but not dendrites, express significantly lower levels of mRNA for CHO1/MKLP1 than hippocampal or sympathetic neurons. These results are consistent with the proposed role of CHO1/MKLP1 in establishing the dendritic microtubule array.
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Details
- Title
- Expression of the mitotic motor protein CHO1/MKLP1 in postmitotic neurons
- Creators
- Lotfi FerhatRyoko KuriyamaGary E LyonsBruce MicalesPeter W Baas
- Publication Details
- The European journal of neuroscience, v 10(4), pp 1383-1393
- Publisher
- Blackwell Science, Ltd; Oxford, UK
- Number of pages
- 11
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Neurobiology and Anatomy
- Web of Science ID
- WOS:000072862100017
- Scopus ID
- 2-s2.0-0031870960
- Other Identifier
- 991014878264804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Neurosciences