Lymphocyte aging in allophenic mice.
Allophenic mice are chimeras which are produced from the aggregation of two genotypically distinct embryos. In this study, embryos from the C57BL/6J and A/J strains were used to produce C57BL/6J----A/J allophenic mice. These strains were chosen because of their markedly different lifespans, their different glucose phosphate isomerase (GPI) isozymes, and their different H-2 haplotypes [C57BL/6J: long-lived, Gpi-1b, H-2b; A/J: short-lived, Gpi-1a, H-2a]. The mice were bled at two month intervals and the composition of their peripheral blood lymphocytes determined at each point from analysis of GPI isozymes and H-2 antigens. It was found that the proportion of long-lived (C57BL/6J) lymphocytes tended to increase with age. Moreover, the total lifespan of the allophenic mice was directly related to the percentage of long-lived lymphocytes in their peripheral blood.
D000375:Aging; D000818:Animals; D002470:Cell Survival; D002678:Chimera; D005260:Female; D005819:Genetic Markers; D005956:Glucose-6-Phosphate Isomerase / Q000032:analysis / Q000235:genetics; D006183:H-2 Antigens / Q000032:analysis; D008136:Longevity; D008214:Lymphocytes / Q000201:enzymology / Q000276:immunology / Q000502:physiology*; D008297:Male; D051379:Mice; D008805:Mice, Inbred A / Q000235:genetics / Q000276:immunology / Q000502:physiology*; D008810:Mice, Inbred C57BL / Q000235:genetics / Q000276:immunology / Q000502:physiology*
D005819:Genetic Markers; D006183:H-2 Antigens; D005956:Glucose-6-Phosphate Isomerase