The influence of Shc proteins on life span in mice

Jon J. Ramsey, Dianna Tran, Marco Giorgio, Stephen M. Griffey, Amanda Koehne, Steven T. Laing, Sandra L. Taylor, Kyoungmi Kim, Gino A. Cortopassi, K. C Kent Lloyd, Kevork Hagopian, Alexey A. Tomilov, Enrica Migliaccio, Pier Giuseppe Pelicci, Roger B. McDonald

Research output: Contribution to journalArticlepeer-review


The signaling molecule p66Shc is often described as a longevity protein. This conclusion is based on a single life span study that used a small number of mice. The purpose of the present studies was to measure life span in a sufficient number of mice to determine if longevity is altered in mice with decreased Shc levels (ShcKO). Studies were completed at UC Davis and the European Institute of Oncology (EIO). At UC Davis, male C57BL/6J WT and ShcKO mice were fed 5% or 40% calorie-restricted (CR) diets. In the 5% CR group, there was no difference in survival curves between genotypes. There was also no difference between genotypes in prevalence of neoplasms or other measures of end-of-life pathology. At 40% calorie restriction group, 70th percentile survival was increased in ShcKO, while there were no differences between genotypes in median or subsequent life span measures. At EIO, there was no increase in life span in ShcKO male or female mice on C57BL/6J, 129Sv, or hybrid C57BL/6J-129Sv backgrounds. These studies indicate that p66Shc is not a longevity protein. However, additional studies are needed to determine the extent to which Shc proteins may influence the onset and severity of specific age-related diseases.

Original languageEnglish
Pages (from-to)1177-1185
Number of pages9
JournalJournals of Gerontology - Series A Biological Sciences and Medical Sciences
Issue number10
Publication statusPublished - 2014


  • Aging
  • Longevity
  • Pathology
  • Shc

ASJC Scopus subject areas

  • Ageing
  • Geriatrics and Gerontology
  • Medicine(all)


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