Genetically engineered mouse models to evaluate the role of Wnt secretion in bone development and homeostasis

American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
Bart O Williams

Abstract

Alterations in components of the Wnt signaling pathway are associated with altered bone development and homeostasis in several human diseases. We created genetically engineered mouse models (GEMMs) that mimic the cellular defect associated with the Porcupine mutations in patients with Goltz Syndrome/Focal Dermal Hypoplasia. These GEMMs were established by utilizing mice containing a conditionally inactivatable allele of Wntless/GPR177 (a gene encoding a protein required for the transport of Porcupine-modified ligand to the plasma membrane for secretion). We crossed this strain to another which drives cre-mediated gene deletion in mature osteoblasts (Osteocalcin-cre) resulted in mice lacking the ability to secrete Wnt ligands in this cell type. These mice displayed severely reduced bone mass and provide a model to understand the effects of disrupting the ability to secrete Wnt ligands on the skeletal system.

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Citations

Nov 7, 2017·Toxicologic Pathology·Whitney A Bullock, Alexander G Robling
Mar 8, 2021·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Karmani ShahBhumika Patel
Nov 9, 2018·Science Translational Medicine·Julia LutherJean-Pierre David

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