Telomere length regulation in mice is linked to a novel chromosome locus

Lingxiang Zhu, Karen S. Hathcock, Prakash Hande, Peter M. Lansdorp, Michael F Seldin, Richard J. Hodes

Research output: Contribution to journalArticle

112 Scopus citations

Abstract

Little is known about the mechanisms that regulate species-specific telomere length, particularly in mammalian species. The genetic regulation of telomere length was therefore investigated by using two inter-fertile species of mice, which differ in their telomere length. Mus musculus (telomere length > 25 kb) and Mus spretus (telomere length 5-15 kb) were used to generate F1 crosses and reciprocal backcrosses, which were then analyzed for regulation of telomere length. This analysis indicated that a dominant and trans-acting mechanism exists capable of extensive elongation of telomeres in somatic cells after fusion of parental germline cells with discrepant telomere lengths. A genome wide screen of interspecific crosses, using M. spretus as the recurrent parent, identified a 5-centimorgan region on distal chromosome 2 that predominantly controls the observed species-specific telomere length regulation. This locus is distinct from candidate genes encoding known telomere-binding proteins or telomerase components. These results demonstrate that an unidentified gene(s) mapped to distal chromosome 2 regulates telomere length in the mouse.

Original languageEnglish (US)
Pages (from-to)8648-8653
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume95
Issue number15
DOIs
StatePublished - Jul 21 1998

ASJC Scopus subject areas

  • Genetics
  • General

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