title: [Unexpected transgene expression of a mammary-specific growth hormone gene construct in Bergmann glial cells of the mouse].
abstract: Pronuclear microinjection was used to produce transgenic mice harboring gene constructs, in which 110 base pairs (WAP1) or 2.4 kilobases (WAP2) of the 5' flanking sequences of the whey acidic protein (WAP) gene were fused to human growth hormone (hGH)-coding sequences. Female WAP-hGH transgenic mice expressed the transgenes in the mammary gland, the expression of the WAP2-hGH transgene mirroring that of the endogenous WAP gene. When other organs were examined, high level expression of hGH was observed in the brains of WAP2-hGH transgenic mice. Using in situ hybridization and immunohistochemistry, hGH expression from the transgene was seen to occur specifically in Bergmann glia cells. While normally neither WAP nor hGH is expressed in this type of cell, it appears that a combination of the regulatory region of the WAP gene and the hGH structural gene results in a novel tissue specificity in Bergmann glia cells.
authors.affiliation: Lehrstuhl für Molekulare Tierzucht am Institut für Tierzucht und Tierhygiene, Ludwig-Maximilians-Universität München.
authors.forename: G
authors.initials: G
authors.lastname: Brem
authors.forename: B
authors.initials: B
authors.lastname: Brenig
authors.forename: B
authors.initials: B
authors.lastname: Salmons
authors.forename: E
authors.initials: E
authors.lastname: Wolf
authors.forename: M
authors.initials: M
authors.lastname: Müller
authors.forename: V
authors.initials: V
authors.lastname: Erfle
authors.forename: W H
authors.initials: WH
authors.lastname: Günzburg
authors.forename: E
authors.initials: E
authors.lastname: Dahme
mesh_terms: D000818:Animals; D015152:Blotting, Northern; D001921:Brain / Q000502:physiology; D005260:Female; D005786:Gene Expression Regulation; D013006:Growth Hormone / Q000235:genetics*; D008321:Mammary Glands, Animal / Q000502:physiology*; D051379:Mice; D008822:Mice, Transgenic / Q000235:genetics*; D008845:Microinjections / Q000662:veterinary; D008894:Milk Proteins / Q000235:genetics; D009457:Neuroglia / Q000502:physiology*; D009693:Nucleic Acid Hybridization; D012333:RNA, Messenger / Q000032:analysis
chemical_list: D008894:Milk Proteins; D012333:RNA, Messenger; C024471:whey acidic proteins; D013006:Growth Hormone
vernacular_title: Unerwartete transgene Expression eines gesäugespezifischen Wachstumshormon-Genkonstruktes in den Bergmann-Gliazellen der Maus.