Publication details

Statins do not inhibit the FGFR signaling in chondrocytes

Authors

FAFÍLEK Bohumil HAMPL Marek ŘIČÁNKOVÁ Nikola VESELA I. BÁLEK Lukáš BOSÁKOVÁ Michaela GUDERNOVÁ Iva VAŘECHA Miroslav BUCHTOVÁ marcela KREJČÍ Pavel

Type Article in Periodical
Magazine / Source Osteoarthritis and Cartilage
MU Faculty or unit

Faculty of Medicine

Citation
Doi http://dx.doi.org/10.1016/j.joca.2017.05.014
Field Traumatology and orthopaedic surgery
Keywords Achondroplasia; Chondrocytes; FGF signaling; Statins
Description Objective Statins are widely used drugs for cholesterol lowering, which were recently found to counteract the effects of aberrant fibroblast growth factor receptor (FGFR3) signaling in cell and animal models of FGFR3-related chondrodysplasia. This opened an intriguing therapeutic possibility for human dwarfing conditions caused by gain-of-function mutations in FGFR3, although the mechanism of statin action on FGFR3 remains unclear. Here, we determine the effect of statins on FGFR signaling in chondrocytes. Design Cultured chondrocyte cell lines, mouse embryonic tibia cultures and limb bud micromasses were treated with FGF2 to activate FGFR signaling. The effects of atorvastatin, fluvastatin, lovastatin and pravastatin on FGFR3 protein stability and on FGFR-mediated chondrocyte growth-arrest, loss of extracellular matrix (ECM), induction of premature senescence and hypertrophic differentiation were evaluated. Results Statins did not alter the level of FGFR3 protein expression nor produce any effect on FGFR-mediated inhibition of chondrocyte proliferation and hypertrophic differentiation in cultured chondrocyte cell lines, mouse tibia cultures or limb bud micromasses. Conclusion We conclude that statins do not inhibit the FGFR signaling in chondrocytes. Therefore the statin-mediated rescue of FGFR3-related chondrodysplasia, described before, is likely not intrinsic to the growth plate cartilage.
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