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Start Over Author "Goetz, Regina" Journal journal of biological chemistry
5 results on '"Goetz, Regina"'

2. Crystal Structure of a Fibroblast Growth Factor Homologous Factor (FHF) Defines a Conserved Surface on FHFs for Binding and Modulation of Voltage-gated Sodium Channels

Author

Goetz, Regina, primary, Dover, Katarzyna, additional, Laezza, Fernanda, additional, Shtraizent, Nataly, additional, Huang, Xiao, additional, Tchetchik, Dafna, additional, Eliseenkova, Anna V., additional, Xu, Chong-Feng, additional, Neubert, Thomas A., additional, Ornitz, David M., additional, Goldfarb, Mitchell, additional, and Mohammadi, Moosa, additional

Published
2009
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5. Tissue-specific expression of betaKlotho and fibroblast growth factor (FGF) receptor isoforms determines metabolic activity of FGF19 and FGF21.

Author

Kurosu H, Choi M, Ogawa Y, Dickson AS, Goetz R, Eliseenkova AV, Mohammadi M, Rosenblatt KP, Kliewer SA, and Kuro-O M

Subjects
3T3-L1 Cells, Adipocytes metabolism, Animals, Cholesterol 7-alpha-Hydroxylase genetics, Extracellular Signal-Regulated MAP Kinases metabolism, Fibroblast Growth Factor-23, Hepatocytes metabolism, Humans, Klotho Proteins, Mice, Organ Specificity, Phosphorylation, Protein Isoforms, Rats, Signal Transduction, ErbB Receptors physiology, Fibroblast Growth Factors pharmacology, Membrane Proteins physiology
Abstract

The fibroblast growth factor (FGF) 19 subfamily of ligands, FGF19, FGF21, and FGF23, function as hormones that regulate bile acid, fatty acid, glucose, and phosphate metabolism in target organs through activating FGF receptors (FGFR1-4). We demonstrated that Klotho and betaKlotho, homologous single-pass transmembrane proteins that bind to FGFRs, are required for metabolic activity of FGF23 and FGF21, respectively. Here we show that, like FGF21, FGF19 also requires betaKlotho. Both FGF19 and FGF21 can signal through FGFR1-3 bound by betaKlotho and increase glucose uptake in adipocytes expressing FGFR1. Additionally, both FGF19 and FGF21 bind to the betaKlotho-FGFR4 complex; however, only FGF19 signals efficiently through FGFR4. Accordingly, FGF19, but not FGF21, activates FGF signaling in hepatocytes that primarily express FGFR4 and reduces transcription of CYP7A1 that encodes the rate-limiting enzyme for bile acid synthesis. We conclude that the expression of betaKlotho, in combination with particular FGFR isoforms, determines the tissue-specific metabolic activities of FGF19 and FGF21.

Published
2007
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