Caenorhabditis elegans respond to high-glucose diets through a network of stress-responsive transcription factors

PLoS One. 2018 Jul 10;13(7):e0199888. doi: 10.1371/journal.pone.0199888. eCollection 2018.

Abstract

High-glycemic-index diets, as well as a sedentary lifestyle are considered as determinant factors for the development of obesity, type 2 diabetes, and cardiovascular diseases in humans. These diets have been shown to shorten the life span of C. elegans in a manner that is dependent on insulin signaling, but the participation of other signaling pathways have not been addressed. In this study, we have determined that worms fed with high-glucose diets show alterations in glucose content and uptake, triglyceride content, body size, number of eggs laid, egg-laying defects, and signs of oxidative stress and accelerated aging. Additionally, we analyzed the participation of different key regulators of carbohydrate and lipid metabolism, oxidative stress and longevity such as SKN-1/NRF2, HIF-1/HIF1α, SBP-1/SREBP, CRH-1/CREB, CEP-1/p53, and DAF-16/FOXO, in the reduction of lifespan in glucose-fed worms.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aging / metabolism
  • Animals
  • Caenorhabditis elegans / genetics
  • Caenorhabditis elegans / growth & development
  • Caenorhabditis elegans / metabolism*
  • Caenorhabditis elegans Proteins / genetics
  • Caenorhabditis elegans Proteins / metabolism*
  • Diet, Carbohydrate Loading / adverse effects*
  • Glucose / administration & dosage
  • Glucose / metabolism*
  • Oviparity
  • Oxidative Stress
  • Stress, Physiological*
  • Transcription Factors / genetics
  • Transcription Factors / metabolism*
  • Triglycerides / metabolism

Substances

  • Caenorhabditis elegans Proteins
  • Transcription Factors
  • Triglycerides
  • Glucose