A variant in IL6ST with a selective IL-11 signaling defect in human and mouse
Tobias Schwerd , Freia Krause , Stephen R. F. Twigg , Dominik Aschenbrenner , Yin-Huai Chen , Uwe Borgmeyer , Miryam Müller , Santiago Manrique , Neele Schumacher , Steven A. Wall , Jonathan Jung , Timo Damm , Claus-Christian Glüer , Jürgen Scheller , Stefan Rose-John , E. Yvonne Jones , Arian Laurence , Andrew O. M. Wilkie , Dirk Schmidt-Arras , Holm H. Uhlig
Bone Research ›› 2020, Vol. 8 ›› Issue (1) : 24
A variant in IL6ST with a selective IL-11 signaling defect in human and mouse
The GP130 cytokine receptor subunit encoded by IL6ST is the shared receptor for ten cytokines of the IL-6 family. We describe a homozygous non-synonymous variant in IL6ST (p.R281Q) in a patient with craniosynostosis and retained deciduous teeth. We characterize the impact of the variant on cytokine signaling in vitro using transfected cell lines as well as primary patient-derived cells and support these findings using a mouse model with the corresponding genome-edited variant Il6st p.R279Q. We show that human GP130 p.R281Q is associated with selective loss of IL-11 signaling without affecting IL-6, IL-27, OSM, LIF, CT1, CLC, and CNTF signaling. In mice Il6st p.R279Q lowers litter size and causes facial synostosis and teeth abnormalities. The effect on IL-11 signaling caused by the GP130 variant shows incomplete penetrance but phenocopies aspects of IL11RA deficiency in humans and mice. Our data show that a genetic variant in a pleiotropic cytokine receptor can have remarkably selective defects.
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Crohn's and Colitis UK (Crohn's & Colitis UK)
Leona M. and Harry B. Helmsley Charitable Trust (Helmsley Charitable Trust)
Deutsche Forschungsgemeinschaft (German Research Foundation)(SCHW1730/1-1)
Wellcome Trust (Wellcome)(093329)
Exzellenzclusters Entzündungsforschung (Excellence Cluster "Inflammation at Interfaces")
RCUK | Medical Research Council (MRC)(G9900061)
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