Abstract
The interaction between cell surface heparan sulphate and diffusible ligands such as FGFs is of vital importance for downstream signaling, however, there are few techniques that can be used to investigate this binding event. The ligand and carbohydrate engagement (LACE) assay is a powerful tool which can be used to probe the molecular interaction between heparan sulphate and diffusible ligands and can detect changes in binding that may occur following genetic or pharmacological intervention. In this protocol we describe an FGF17:FGFR1 LACE assay performed on embryonic mouse brain tissue. We also describe the method we have used to quantify changes in fluorescent LACE signal in response to altered HS sulphation.
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