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  • Title: Metal-inducible activities of metallothionein promoters in fish cells and fry.
    Author: Inoue K, Akita N, Shiba T, Satake M, Yamashita S.
    Journal: Biochem Biophys Res Commun; 1992 Jun 30; 185(3):1108-14. PubMed ID: 1627132.
    Abstract:
    Activities of trout metallothionein-A promoter and mouse metallothionein-I promoter in fish cells and fry were examined using the chloramphenicol acetyltransferase (CAT) gene as a reporter. Transfection and transient CAT assays on a trout liver cell line indicated that both promoters were inducible by metals, including zinc. In vivo activities of both promoters were examined using microinjection system into medaka eggs. Some of the hatched fry were exposed to zinc and their CAT activities were assayed. Both promoters revealed considerable activities after exposure to zinc while only weak activities were detected in unexposed fry.
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