Mutant Fibroblast Growth Factor Receptor 3 Induces Intracellular Signaling and Cellular Transformation in a Cell Type- and Mutation-Specific Manner
[Paper-level Aggregated] PMCID: PMC2789045
Evidence Type(s): Functional
Summary: Mutation: S249C | Summary: The S249C mutation in FGFR3 alters molecular function by inducing phosphorylation of FRS2alpha and ERK1/2, leading to increased proliferation, viability, and cell cycle alterations in urothelial cells. It is associated with ligand-independent dimerization, strong constitutive phosphorylation, and increased phosphorylation of PLCgamma1, indicating a significant change in molecular function.
Evidence Type: Functional Mutation: Y375C | Summary: The Y375C mutation in FGFR3 alters molecular function by inducing phosphorylation of FRS2alpha and ERK1/2, resulting in increased proliferation, viability, and changes in cell morphology. It exhibits an intermediate cell cycle profile and shows increased phosphorylation of PLCgamma1, indicating a functional impact on cell cycle-related proteins and signaling pathways.
Evidence Type: Functional Mutation: K652E | Summary: The K652E mutation in FGFR3 alters molecular function by resulting in high levels of constitutive receptor phosphorylation and activating downstream signaling pathways. It is associated with changes in cell morphology and behavior, but does not induce the same proliferative effects as S249C and Y375C. The mutation shows a lack of constitutive PLCgamma1 phosphorylation and reduced viability and saturation density in TERT-NHUC cells, indicating a distinct functional impact compared to other mutants.
Gene→Variant (gene-first): FGFR3(2261):S249C FGFR3(2261):Y375C FGFR3(2261):K652E
Genes: FGFR3(2261)
Variants: S249C Y375C K652E