Endocrine disruptors induce perturbations in endoplasmic reticulum and mitochondria of human pluripotent stem cell derivatives

Nat Commun. 2017 Aug 9;8(1):219. doi: 10.1038/s41467-017-00254-8.

Abstract

Persistent exposure to man-made endocrine disrupting chemicals during fetal endocrine development may lead to disruption of metabolic homeostasis contributing to childhood obesity. Limited cellular platforms exist to test endocrine disrupting chemical-induced developmental abnormalities in human endocrine tissues. Here we use an human-induced pluripotent stem cell-based platform to demonstrate adverse impacts of obesogenic endocrine disrupting chemicals in the developing endocrine system. We delineate the effects upon physiological low-dose exposure to ubiquitous endocrine disrupting chemicals including, perfluoro-octanoic acid, tributyltin, and butylhydroxytoluene, in endocrine-active human-induced pluripotent stem cell-derived foregut epithelial cells and hypothalamic neurons. Endocrine disrupting chemicals induce endoplasmic reticulum stress, perturb NF-κB, and p53 signaling, and diminish mitochondrial respiratory gene expression, spare respiratory capacity, and ATP levels. As a result, normal production and secretion of appetite control hormones, PYY, α-MSH, and CART, are hampered. Blocking NF-κB rescues endocrine disrupting chemical-induced aberrant mitochondrial phenotypes and endocrine dysregulation, but not ER-stress and p53-phosphorylation changes.Harmful chemicals that disrupt the endocrine system and hormone regulation have been associated with obesity. Here the authors apply a human pluripotent stem cell-based platform to study the effects of such compounds on developing gut endocrine and neuroendocrine systems.

Publication types

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

MeSH terms

  • Adenosine Triphosphate / metabolism
  • Endocrine Disruptors / toxicity*
  • Endoplasmic Reticulum Stress / drug effects*
  • Hormones / metabolism
  • Humans
  • Induced Pluripotent Stem Cells
  • Intestinal Mucosa / drug effects
  • Mitochondria / drug effects
  • NF-kappa B / metabolism*
  • Stress, Physiological / drug effects*
  • Tumor Suppressor Protein p53 / metabolism*

Substances

  • Endocrine Disruptors
  • Hormones
  • NF-kappa B
  • Tumor Suppressor Protein p53
  • Adenosine Triphosphate