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Analysis of the spatial, temporal and tissue‐specific transcription of γ‐sarcoglycan gene using a transgenic mouse
Author(s) -
Noguchi Satoru,
Wakabayashi-Takai Eriko,
Sasaoka Toshikuni,
Ozawa Eijiro
Publication year - 2001
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(01)02368-7
Subject(s) - reporter gene , biology , microbiology and biotechnology , transgene , gene , exon , gene expression , endogeny , genetically modified mouse , promoter , green fluorescent protein , regulation of gene expression , transcriptional regulation , transcription (linguistics) , regulatory sequence , genetics , biochemistry , linguistics , philosophy
To evaluate the promoter function of the 5′‐flanking sequence of mouse γ‐sarcoglycan ( γ‐SG ) gene in vivo, we generated transgenic mice harboring this sequence fused with enhanced green fluorescent protein reporter gene. The reporter expression was restricted in striated muscles and particularly strong in all myofibers in skeletal muscles. Using these mice, we examine the spatial and temporal transcriptional patterns of the γ‐SG gene during mouse skeletal muscle development. The expression of basic helix loop helix transcriptional factors preceded that of the reporter. Differences between the expression of reporter and endogenous γ‐SG genes in non‐muscle tissues suggested the existence of additional promoter elements in the endogenous gene, and the analysis of endogenous mRNAs demonstrated the existence of a novel upstream exon and promoter active in non‐muscle tissues.