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PLoS One. 2017 Apr 27;12(4):e0176371. doi: 10.1371/journal.pone.0176371. eCollection 2017.

Characterization of physiological defects in adult SIRT6-/- mice.

Author information

1
The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel.
2
Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
3
Harvard University Medical School, Boston, Massachusetts, United States of America.

Abstract

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.

PMID:
28448551
PMCID:
PMC5407791
DOI:
10.1371/journal.pone.0176371
[Indexed for MEDLINE]
Free PMC Article

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