Genetic typing of the Senescence-Accelerated Mouse (SAM) strains with microsatellite markers

Chen Xia, Keiichi Higuchi*, Motoyuki Shimizu, Takatoshi Matsushita, Kumiko Kogishi, Jing Wang, Takuya Chiba, Michael F.W. Festing, Masanori Hosokawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The Senescence-Accelerated Mouse (SAM) strains constitute a murine model of accelerated senescence originating from the ancestral AKR/J strains and consist of nine senescence-prone (SAMP) strains and four senescence-resistant (SAMR) strains. The chromosomes (Chrs) of the SAM strains were typed with 581 microsatellite markers amplified by PCR, and the fundamental genetic information of the SAM strains was obtained. One-third of the examined markers displayed polymorphism among the strains, and only two alleles were detected in almost all loci among the SAM and AKR/J strains. However, in 12 loci (5.6% of total 215 polymorphic markers), the third allele was detected among the SAM strains. The genetic typing and developmental history suggested that the SAM strains were related inbred strains developed by the accidental crossing between the AKR/J strain and other unknown strain(s). Comparison of the distribution of the loci in the SAMP and the SAMR series revealed notable differences in the four regions on Chrs 4, 14, 16, and 17. This indicated that some of these chromosomal sites might contain the genes responsible for accelerated senescence in the SAMP series.

Original languageEnglish
Pages (from-to)235-238
Number of pages4
JournalMammalian Genome
Issue number3
Publication statusPublished - 1999 Aug 26
Externally publishedYes

ASJC Scopus subject areas

  • Genetics


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