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. 2004 May 1;379(Pt 3):739–747. doi: 10.1042/BJ20031842

Location of promoter elements necessary and sufficient to direct testis-specific expression of the Hst70/Hsp70.2 gene.

Dorota Scieglińska 1, Natallia Vydra 1, Zdzisław Krawczyk 1, Wiesława Widłak 1
PMCID: PMC1224129  PMID: 14766014

Abstract

The rat Hst70 gene and its mouse counterpart Hsp70.2 are expressed specifically in pachytene primary spermatocytes and spermatids. Here we demonstrate that a 165 bp fragment of the Hst70 gene promoter, containing the T1 transcription start site region, entire exon 1 and 42 bp 5' region of the intron, is sufficient to drive testis-specific expression of the chloramphenicol acetyltransferase reporter gene in transgenic mice with the same developmentally regulated pattern as the endogenous Hsp70.2 gene. We show further that high-level tissue-specific gene expression requires additional sequences localized upstream of the T2 transcription start site. Electrophoretic mobility-shift assay analysis revealed that only testes of juvenile rats, when Hst70 gene expression is repressed, contain proteins that specifically bind to the Oct (octamer) sequence localized directly downstream of the T1 site.

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Selected References

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