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Heterogeneity in the Expression Pattern of Two Ganglioside Synthase Genes During Mouse Brain Development
Author(s) -
Yamamoto Akihito,
Haraguchi Masashi,
Yamashiro Shuji,
Fukumoto Satoshi,
Furukawa Keiko,
Takamiya Kogo,
Atsuta Mitsuru,
Shiku Hiroshi,
Furukawa Koichi
Publication year - 1996
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1046/j.1471-4159.1996.66010026.x
Subject(s) - ganglioside , atp synthase , biology , glycosyltransferase , gene , gene expression , in situ hybridization , complementary dna , microbiology and biotechnology , isozyme , biochemistry , enzyme
Gangliosides are synthesized by sequential catalytic reaction of multiple glycosyltransferases. GM2/GD2 synthase and GD3 synthase are key enzymes for ganglioside synthesis, because their relative activities regulate the main profiles of ganglioside expression. Mouse GD3 synthase (EC 2.4.99.8) cDNA was cloned by eukaryotic expression cloning, and its mRNA expression as well as that of GM2/GD2 synthase gene during the development of the mouse CNS was analyzed by using northern blotting, reverse transcription‐polymerase chain reaction, and in situ hybridization. When brain tissue was analyzed as a whole mass, a typical pattern corresponding to the reported findings obtained by biochemical analyses was observed, i.e., high expression of GD3 synthase gene in the early stage and gradual increase of GM2/GD2 synthase gene expression in the late stage of the development. However, the results of in situ hybridization of these two genes revealed that the expression kinetics of these two genes were heterogeneous among various sites in the brain under development. These findings suggest that various expression patterns of the two genes reflect differences in the course of the development of individual sites, and also different ganglioside components are required in individual portions of the brain for development and maintenance of the function.