%0 Journal Article
%T Beaver and Naked Mole Rat Genomes Reveal Common Paths to Longevity.
%A Zhou X
%A Dou Q
%A Fan G
%A Zhang Q
%A Sanderford M
%A Kaya A
%A Johnson J
%A Karlsson EK
%A Tian X
%A Mikhalchenko A
%A Kumar S
%A Seluanov A
%A Zhang ZD
%A Gorbunova V
%A Liu X
%A Gladyshev VN
%J Cell Rep
%V 32
%N 4
%D 07 2020 28
%M 32726638
暂无%R 10.1016/j.celrep.2020.107949
%X Long-lived rodents have become an attractive model for the studies on aging. To understand evolutionary paths to long life, we prepare chromosome-level genome assemblies of the two longest-lived rodents, Canadian beaver (Castor canadensis) and naked mole rat (NMR, Heterocephalus glaber), which were scaffolded with in vitro proximity ligation and chromosome conformation capture data and complemented with long-read sequencing. Our comparative genomic analyses reveal that amino acid substitutions at "disease-causing" sites are widespread in the rodent genomes and that identical substitutions in long-lived rodents are associated with common adaptive phenotypes, e.g., enhanced resistance to DNA damage and cellular stress. By employing a newly developed substitution model and likelihood ratio test, we find that energy and fatty acid metabolism pathways are enriched for signals of positive selection in both long-lived rodents. Thus, the high-quality genome resource of long-lived rodents can assist in the discovery of genetic factors that control longevity and adaptive evolution.