Human Genetics

, Volume 80, Issue 3, pp 247–252 | Cite as

Chromosome localization of the human insulin gene in transgenic mouse lines

  • Kyra Michalova
  • Danielle Bucchini
  • Marie-Anne Ripoche
  • Raymond Pictet
  • Jacques Jami
Original Investigations

Summary

Three transgenic mouse lines, Tg 74, Tg 174, and Tg 171, were obtained by microinjection of an 11-kb human DNA fragment carrying the insulin gene into pronuclei of fertilized mouse eggs. The human insulin gene was expressed in all three transgenic mouse lines as shown by the presence of human C peptide in serum and urine and of human insulin transcripts in RNA prepared from pancreas. Several copies of the human DNA fragment arranged in head-to-tail arrays were present in each line. The human DNA insert was transmitted to the progeny as a single genetic locus. The chromosomal integration of the human insulin transgene was directly demonstrated by in situ hybridization to metaphase chromosomes of mitotic cells prepared from spleen and bone marrow. The insert appeared unique and located on a different chromosome in each line, namely 7 for Tg 74, 13 for Tg 174, and 18 for TG 171. Separation of DNA fragments larger than 20 kb by pulse-field electrophoresis showed that several insertion sites were present in each chromosome locus. This is the first direct evidence in transgenic mice that a gene located at various chromosome loci can be correctly expressed.

Keywords

Peptide Bone Marrow Transgenic Mouse Chromosome Locus Insertion Site 

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Kyra Michalova
    • 1
  • Danielle Bucchini
    • 1
  • Marie-Anne Ripoche
    • 1
  • Raymond Pictet
    • 1
  • Jacques Jami
    • 1
  1. 1.Institut Jacques Monod, Centre National de la Recherche Scientifique, Unité 257 de l'Institut National de la Santé et de la Recherche MédicaleUniversité Paris VIIParis Cédex 05France

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