The necroptosis-inducing kinase RIPK3 dampens adipose tissue inflammation and glucose intolerance

Jeremie Gautheron, Mihael Vucur, Anne T. Schneider, Ilenia Severi, Christoph Roderburg, Sanchari Roy, Matthias Bartneck, Peter Schrammen, Mauricio Berriel Diaz, Josef Ehling, Felix Gremse, Felix Heymann, Christiane Koppe, Twan Lammers, Fabian Kiessling, Niels Van Best, Oliver Pabst, Gilles Courtois, Andreas Linkermann, Stefan KrautwaldUlf P. Neumann, Frank Tacke, Christian Trautwein, Douglas R. Green, Thomas Longerich, Norbert Frey, Mark Luedde, Matthias Bluher, Stephan Herzig, Mathias Heikenwalder, Tom Luedde*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

39 Citations (Web of Science)

Abstract

Receptor-interacting protein kinase 3 (RIPK3) mediates necroptosis, a form of programmed cell death that promotes inflammation in various pathological conditions, suggesting that it might be a privileged pharmacological target. However, its function in glucose homeostasis and obesity has been unknown. Here we show that RIPK3 is over expressed in the white adipose tissue (WAT) of obese mice fed with a choline-deficient high-fat diet. Genetic inactivation of Ripk3 promotes increased Caspase-8-dependent adipocyte apoptosis and WAT inflammation, associated with impaired insulin signalling in WAT as the basis for glucose intolerance. Similarly to mice, in visceral WAT of obese humans, RIPK3 is overexpressed and correlates with the body mass index and metabolic serum markers. Together, these findings provide evidence that RIPK3 in WAT maintains tissue homeostasis and suppresses inflammation and adipocyte apoptosis, suggesting that systemic targeting of necroptosis might be associated with the risk of promoting insulin resistance in obese patients.
Original languageEnglish
Article number11869
JournalNature Communications
Volume7
DOIs
Publication statusPublished - Jun 2016

Cite this