Abstract
The fibroblast growth factor receptor 4 (FGFR4)-R388 single-nucleotide polymorphism has been associated with cancer risk and prognosis. Here we show that the FGFR4-R388 allele yields a receptor variant that preferentially promotes STAT3/5 signaling. This STAT activation transcriptionally induces Grb14 in pancreatic endocrine cells to promote insulin secretion. Knockin mice with the FGFR4 variant allele develop pancreatic islets that secrete more insulin, a feature that is reversed through Grb14 deletion and enhanced with FGF19 administration. We also show in humans that the FGFR4-R388 allele enhances islet function and may protect against type 2 diabetes. These data support a common genetic link underlying cancer and hyperinsulinemia.
Copyright © 2013 Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Retracted Publication
MeSH terms
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Adaptor Proteins, Signal Transducing
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Animals
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Cells, Cultured
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Diabetes Mellitus, Type 2 / genetics
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Diabetes Mellitus, Type 2 / metabolism
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Diabetes Mellitus, Type 2 / prevention & control
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Gene Expression Profiling
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Gene Knock-In Techniques
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Humans
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Hyperinsulinism
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Insulin / biosynthesis
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Insulin / metabolism*
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Insulin Secretion
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Mice
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Mice, Knockout
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Neoplasms / genetics
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Neoplasms / metabolism
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Pancreas / metabolism
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Polymorphism, Single Nucleotide
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Proteins / genetics
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Proteins / metabolism*
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RNA Interference
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RNA, Small Interfering
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Rats
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Receptor, Fibroblast Growth Factor, Type 4 / genetics
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Receptor, Fibroblast Growth Factor, Type 4 / metabolism*
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Receptor, Insulin / metabolism
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STAT3 Transcription Factor / metabolism*
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STAT5 Transcription Factor / metabolism*
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Signal Transduction / genetics
Substances
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Adaptor Proteins, Signal Transducing
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Grb14 protein, mouse
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Insulin
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Proteins
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RNA, Small Interfering
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STAT3 Transcription Factor
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STAT5 Transcription Factor
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Stat3 protein, mouse
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Fgfr4 protein, mouse
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Receptor, Fibroblast Growth Factor, Type 4
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Receptor, Insulin