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Rat gene mapping using PCR-analyzed microsatellites.

T Serikawa1, T Kuramoto, P Hilbert

  • 1Institute of Laboratory Animals, Faculty of Medicine, Kyoto University, Japan.

Genetics
|July 1, 1992
PubMed
Summary
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Researchers developed sequence-tagged microsatellite sites (STMSs) for rat genetic mapping. This created a comprehensive rat gene map, aiding comparative genomics with mouse and human gene locations.

Area of Science:

  • Genetics
  • Genomics
  • Comparative Genomics

Background:

  • Microsatellite regions are crucial for genetic variation and mapping.
  • Public databases contain numerous rat loci with short tandem repeat sequences.

Purpose of the Study:

  • To develop PCR-formatted sequence-tagged microsatellite sites (STMSs) for rat genetic analysis.
  • To construct a comprehensive genetic map of the rat genome.
  • To facilitate comparative mapping with mouse and human genomes.

Main Methods:

  • Extracted rat loci with short tandem repeats from GenBank/EMBL.
  • Designed primers for polymerase chain reaction (PCR) amplification of microsatellite regions.
  • Assigned loci to chromosomes using rat x mouse somatic cell hybrid clones.

Related Experiment Videos

  • Analyzed STMS length variation across inbred rat strains.
  • Constructed a genetic map using polymorphic markers in backcross and F2 crosses.

    • Main Results:

    • 134 STMSs for 118 loci were characterized.
    • Length variation was observed in 79.4% of examined loci across 8 rat strains.
    • A genetic map with 24 linkage groups was constructed and assigned to specific chromosomes.
    • The rat genetic map aligns with a gene map due to STMSs' association with coding sequences.

    Conclusions:

    • The developed STMSs are valuable tools for rat genetic mapping.
    • The integrated genetic and gene map provides a foundation for comparative genomics.
    • This resource aids in understanding genome organization and evolution across species.