Immunocytochemical localization of a novel radial glial intermediate filament protein

被引:25
作者
Cole, GJ [1 ]
Lee, JA [1 ]
机构
[1] OHIO STATE UNIV, DEPT CELL BIOL NEUROBIOL & ANAT, COLUMBUS, OH 43210 USA
来源
DEVELOPMENTAL BRAIN RESEARCH | 1997年 / 101卷 / 1-2期
关键词
midline radial glia; astrocyte; glial fibrillary acidic protein; vimentin; transition;
D O I
10.1016/S0165-3806(97)00068-0
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We have examined by immunocytochemistry the subcellular localization of a chick radial glial protein, named transitin, that by molecular cloning has been shown to be a novel member of the intermediate filament protein superfamily. In astrocytes cultured from E10 chick brain, transitin is localized to the intermediate filament network in accordance with its structural properties. Using confocal microscopy we examined the expression of transitin, vimentin and glial fibrillary acidic protein (GFAP) in cultured astrocytes, and show that transitin co-distributes with these other glial intermediate filament proteins. The expression of transitin, vimentin and GFAP was also compared in embryonic chick spinal cord and brain radial glia, with these studies showing that these intermediate filament proteins display distinct expression patterns during CNS development. Of particular note is the absence of vimentin and GFAP in spinal cord midline radial glia that express transitin protein, and a transient expression of transitin in brain midline radial glia that continue to express vimentin. Our studies presented here therefore indicate that transitin, a novel radial glial intermediate filament protein, may have functions that are unrelated to GFAP or vimentin during CNS development, since transitin is localized to the processes of midline radial glia and is transiently expressed during chick CNS development. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:225 / 238
页数:14
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