Dscam is associated with axonal and dendritic features of neuronal cells

Agarwala, Kishan Lal ; Ganesh, Subramaniam ; Suzuki, Toshimitsu ; Akagi, Takumi ; Kaneko, Kumi ; Amano, Kenji ; Tsutsumi, Yukie ; Yamaguchi, Kazuhiko ; Hashikawa, Tsutomu ; Yamakawa, Kazuhiro (2001) Dscam is associated with axonal and dendritic features of neuronal cells Journal of Neuroscience Research, 66 (3). pp. 337-346. ISSN 0360-4012

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/jnr.122...

Related URL: http://dx.doi.org/10.1002/jnr.1226


Dscam, a novel cell-adhesion molecule belonging to the Ig-superfamily mediates homophilic intercellular adhesion and is expressed abundantly in the nervous system during development. To gain better understanding on the role of Dscam in neuronal differentiation, we raised an antibody and characterized its protein product. Anti-Dscam antibody detected an ∼200-kDa protein band in human and mouse brain lysates. Immunohistochemical studies showed that during embryonic development of mice, mouse Dscam is expressed throughout the neuronal tissues and also in nonneuronal tissues such as lung, liver, and limb buds. In adult brain Dscam expression is predominant in the cerebellum, hippocampus, and olfactory bulb. Immunofluorescence double labeling of hippocampal and cerebellar primary cultures revealed that Dscam is associated with axonal and dendritic processes. In view of its cellular localization and spatiotemporal expression pattern, we suggest that Dscam is involved in cell–cell interactions during axonal-dendritic development, and maintenance of functional neuronal networks.

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