Interleukin-1 receptor activation aggravates autosomal dominant polycystic kidney disease by modulating regulated necrosis

Am J Physiol Renal Physiol. 2019 Aug 1;317(2):F221-F228. doi: 10.1152/ajprenal.00104.2019. Epub 2019 May 29.

Abstract

Autosomal dominant polycystic kidney disease (ADPKD) is associated with increased chemokines, cytokines, and growth factors in the diseased kidney. We found that both isoforms of IL-1, IL-1α and IL-1β, were upregulated in ADPKD tissues. Here, we used a unique murine ADPKD model with selective deletion of polycystin-1 (pkd1) in the kidney (KPKD1) to study the role of IL-1 signaling in ADPKD progression. In KPKD mice, genetic deletion of the IL-1 receptor [IL-1 receptor (IL-1R) knockout (KO)] prolongs survival and attenuates cyst volume. Compared with IL-1R wild-type KPKD1 kidneys, IL-1R KO KPKD1 kidneys have upregulated TNF-α gene expression, with consequent elevations in markers for TNF-dependent regulated necrosis. We further observed that regulated necrosis was increased in ADPKD tissues from both humans and mice. To confirm that enhanced necroptosis is protective in ADPKD, we treated KPKD1 mice with an inhibitor of regulated necrosis (Nec-1). Regulated necrosis suppression augments kidney weights, suggesting that regulated necrosis is required to limit kidney growth in ADPKD. Thus, IL-1R activation drives ADPKD progression by paradoxically limiting regulated necrosis.

Keywords: autosomal dominant polycystic kidney disease; interleukin-1; necroptosis; tumor necrosis factor-α.

Publication types

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

MeSH terms

  • Animals
  • Cells, Cultured
  • Disease Models, Animal
  • Humans
  • Interleukin-1 / genetics
  • Interleukin-1 / metabolism
  • Kidney / metabolism*
  • Kidney / pathology
  • Mice, Knockout
  • Necroptosis
  • Necrosis
  • Polycystic Kidney, Autosomal Dominant / genetics
  • Polycystic Kidney, Autosomal Dominant / metabolism*
  • Polycystic Kidney, Autosomal Dominant / pathology
  • Receptors, Interleukin-1 Type I / deficiency
  • Receptors, Interleukin-1 Type I / genetics
  • Receptors, Interleukin-1 Type I / metabolism*
  • Signal Transduction
  • TRPP Cation Channels / genetics
  • TRPP Cation Channels / metabolism
  • Tumor Necrosis Factor-alpha / genetics
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • IL1R1 protein, mouse
  • Interleukin-1
  • Receptors, Interleukin-1 Type I
  • TRPP Cation Channels
  • Tnf protein, mouse
  • Tumor Necrosis Factor-alpha
  • polycystic kidney disease 1 protein