Characterization of physiological defects in adult SIRT6-/- mice

PLoS One

Eyal Banin¹  Alexey Obolensky¹  Fredrick W. Alt²  Yariv Kanfi³  Victoria Peshti³  Moran Rathaus³  Simon Tinman³  Liat Nahum³  Maytal Avraham³  Haim Y. Cohen³ 

[1] Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel;Harvard University Medical School, Boston, Massachusetts, United States of America;The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel

关键词: Mouse models;    Glucose;    Insulin;    Glucose metabolism;    Cornea;    Body weight;    Eyes;    Histology;   

DOI  :  10.1371/journal.pone.0176371

学科分类：医学（综合）

来源: Public Library of Science

【 摘 要 】

The NAD+-dependent SIRT6 deacetylase was shown to be a major regulator of lifespan and healthspan. Mice deficient for SIRT6 develop a premature aging phenotype and metabolic defects, and die before four weeks of age. Thus, the effect of SIRT6 deficiency in adult mice is unknown. Here we show that SIRT6-/- mice in mixed 129/SvJ/BALB/c background reach adulthood, allowing examination of SIRT6-related metabolic and developmental phenotypes in adult mice. In this mixed background, at 200 days of age, more than 80% of the female knock-out mice were alive whereas only 10% of male knock-out mice survived. In comparison to their wild-type littermates, SIRT6 deficient mice have reduced body weight, increased glucose uptake and exhibit an age-dependent progressive impairment of retinal function accompanied by thinning of retinal layers. Together, these results demonstrate a role for SIRT6 in metabolism and age-related ocular changes in adult mice and suggest a gender specific regulation of lifespan by SIRT6.

【 授权许可】

CC BY