Transient metabolic improvement in obese mice treated with navitoclax or dasatinib/quercetin

Aging (Albany NY). 2020 Jun 25;12(12):11337-11348. doi: 10.18632/aging.103607. Epub 2020 Jun 25.

Abstract

Senescent cells accumulate with obesity in the white adipose tissue of mice and humans. These senescent cells enhance the pro-inflammatory environment that, with time, contributes to the onset of glucose intolerance and type 2 diabetes. Glucose intolerance in mouse models of obesity has been successfully reversed by the elimination of senescent cells with the senolytic compounds navitoclax or the combination of dasatinib and quercetin (D/Q). In this work, we generated obese mice by high-fat diet feeding, and treated them with five consecutive cycles of navitoclax or D/Q during 16 weeks. We observed an efficient reduction in the white adipose tissue of the senescence markers senescence-associated β-galactosidase activity, Cdkn2a-p16 and Cdkn2a-p19 at the end of the 5 cycles. Mice treated with both navitoclax and D/Q showed an improvement of their insulin sensitivity and glucose tolerance during a short period of time (cycles 3 and 4), that disappeared at the fifth cycle. Also, these mice tended to increase the expression at their adipose tissue of the adipogenic genes Pparg and, Cebpa, as well as their plasma adiponectin levels. Together, our work shows that two different senolytic treatments, acting through independent pathways, are transiently effective in the treatment of obesity-induced metabolic disorders.

Keywords: diabetes; mouse model; obesity; senescence; senolytic.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adipogenesis / drug effects
  • Adiponectin / blood
  • Adiponectin / metabolism
  • Adipose Tissue, White / cytology
  • Adipose Tissue, White / drug effects
  • Adipose Tissue, White / metabolism
  • Aniline Compounds / administration & dosage*
  • Animals
  • CCAAT-Enhancer-Binding Proteins / metabolism
  • Cellular Senescence / drug effects*
  • Cellular Senescence / physiology
  • Dasatinib / administration & dosage*
  • Diet, High-Fat / adverse effects
  • Disease Models, Animal
  • Drug Administration Schedule
  • Drug Combinations
  • Glucose Intolerance / blood
  • Glucose Intolerance / drug therapy
  • Glucose Intolerance / etiology
  • Glucose Intolerance / metabolism
  • Humans
  • Insulin Resistance
  • Male
  • Mice
  • Mice, Obese
  • Obesity / blood
  • Obesity / drug therapy*
  • Obesity / etiology
  • Obesity / metabolism
  • PPAR gamma / metabolism
  • Quercetin / administration & dosage*
  • Sulfonamides / administration & dosage*

Substances

  • Adiponectin
  • Aniline Compounds
  • CCAAT-Enhancer-Binding Proteins
  • CEBPA protein, mouse
  • Drug Combinations
  • PPAR gamma
  • Pparg protein, mouse
  • Sulfonamides
  • Quercetin
  • Dasatinib
  • navitoclax