Mammalian cDNA and prokaryotic reporter sequences silence adjacent transgenes in transgenic mice.

Clark AJ, Harold G, Yull FE
Nucleic Acids Res. 1997 25 (5): 1009-14

PMID: 9023112 · PMCID: PMC146529 · DOI:10.1093/nar/25.5.1009

The ovine beta-lactoglobulin gene is expressed efficiently and at high levels in the mammary gland of transgenic mice. In contrast, when this gene is linked to a second gene construct comprising a mammalian cDNA or a CAT reporter sequence it fails to be expressed in the majority of transgenic lines generated. We suggest that mammalian cDNAs and prokaryotic reporter sequences can serve as active foci for gene silencing in the mammalian genome.

MeSH Terms (18)

Animals Chloramphenicol O-Acetyltransferase DNA, Complementary Factor IX Female Gene Expression Regulation Genes, Reporter Humans Lactoglobulins Male Mammals Mammary Glands, Animal Mice Mice, Inbred C57BL Mice, Inbred CBA Mice, Transgenic Prokaryotic Cells Transgenes

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