LOS PACIENTES AVANZANDO EN INVESTIGACIÓN
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Sci Transl Med 18 September 2013:
Vol. 5, Issue 203, p. 203ra124
Sci. Transl. Med. DOI: 10.1126/scitranslmed.3006247
Vol. 5, Issue 203, p. 203ra124
Sci. Transl. Med. DOI: 10.1126/scitranslmed.3006247
- Research Article
Postnatal Soluble FGFR3 Therapy Rescues Achondroplasia Symptoms and Restores Bone Growth in Mice
- Stéphanie Garcia1,2,3,
- Béatrice Dirat1,3,
- Thomas Tognacci1,3,
- Nathalie Rochet4,
- Xavier Mouska4,
- Stéphanie Bonnafous1,3,5,
- Stéphanie Patouraux1,3,6,
- Albert Tran1,3,5,
- Philippe Gual1,3,5,
- Yannick Le Marchand-Brustel1,3,
- Isabelle Gennero7 and
- Elvire Gouze1,3,*
+ Author Affiliations
- ↵*Corresponding author. E-mail: elvire.gouze@inserm.fr
Abstract
Achondroplasia is a rare genetic disease characterized by abnormal bone development, resulting in short stature. It is caused by a single point mutation in the gene coding for fibroblast growth factor receptor 3 (FGFR3), which leads to prolonged activation upon ligand binding. To prevent excessive intracellular signaling and rescue the symptoms of achondroplasia, we have developed a recombinant protein therapeutic approach using a soluble form of human FGFR3 (sFGFR3), which acts as a decoy receptor and prevents FGF from binding to mutant FGFR3. sFGFR3 was injected subcutaneously to newborn Fgfr3ach/+ mice—the mouse model of achondroplasia—twice per week throughout the growth period during 3 weeks. Effective maturation of growth plate chondrocytes was restored in bones of treated mice, with a dose-dependent enhancement of skeletal growth in Fgfr3ach/+ mice. This resulted in normal stature and a significant decrease in mortality and associated complications, without any evidence of toxicity. These results describe a new approach for restoring bone growth and suggest that sFGFR3 could be a potential therapy for children with achondroplasia and related disorders.
- Copyright © 2013, American Association for the Advancement of Science
Citation: Postnatal Soluble FGFR3 Therapy Rescues Achondroplasia Symptoms and Restores Bone Growth in Mice. Sci. Transl. Med. 5, 203ra124 (2013).
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