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Maier B, Ogihara T, Trace AP, Tersey SA, Robbins RD, Chakrabarti SK, Nunemaker CS, Stull ND, Taylor CA, Thompson JE, Dondero RS, Lewis EC, Dinarello CA, Nadler JL, Mirmira RG. The unique hypusine modification of eIF5A promotes islet beta cell inflammation and dysfunction in mice. J Clin Invest 2010; 120:2156-70. [PMID: 20501948 PMCID: PMC2877928 DOI: 10.1172/jci38924] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 03/10/2010] [Indexed: 12/15/2022] Open
Abstract
In both type 1 and type 2 diabetes, pancreatic islet dysfunction results in part from cytokine-mediated inflammation. The ubiquitous eukaryotic translation initiation factor 5A (eIF5A), which is the only protein to contain the amino acid hypusine, contributes to the production of proinflammatory cytokines. We therefore investigated whether eIF5A participates in the inflammatory cascade leading to islet dysfunction during the development of diabetes. As described herein, we found that eIF5A regulates iNOS levels and that eIF5A depletion as well as the inhibition of hypusination protects against glucose intolerance in inflammatory mouse models of diabetes. We observed that following knockdown of eIF5A expression, mice were resistant to beta cell loss and the development of hyperglycemia in the low-dose streptozotocin model of diabetes. The depletion of eIF5A led to impaired translation of iNOS-encoding mRNA within the islet. A role for the hypusine residue of eIF5A in islet inflammatory responses was suggested by the observation that inhibition of hypusine synthesis reduced translation of iNOS-encoding mRNA in rodent beta cells and human islets and protected mice against the development of glucose intolerance the low-dose streptozotocin model of diabetes. Further analysis revealed that hypusine is required in part for nuclear export of iNOS-encoding mRNA, a process that involved the export protein exportin1. These observations identify the hypusine modification of eIF5A as a potential therapeutic target for preserving islet function under inflammatory conditions.
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Affiliation(s)
- Bernhard Maier
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Takeshi Ogihara
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Anthony P. Trace
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Sarah A. Tersey
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Reiesha D. Robbins
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Swarup K. Chakrabarti
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Craig S. Nunemaker
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Natalie D. Stull
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Catherine A. Taylor
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - John E. Thompson
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Richard S. Dondero
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Eli C. Lewis
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Charles A. Dinarello
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jerry L. Nadler
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Raghavendra G. Mirmira
- Department of Pediatrics and Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Department of Biochemistry and Molecular Genetics and
Department of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Department of Medicine and Strelitz Diabetes Center, Eastern Virginia Medical School, Norfolk, Virginia, USA.
Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
Senesco Technologies Inc., New Brunswick, New Jersey, USA.
Department of Medicine, University of Colorado, Aurora, Colorado, USA.
Department of Medicine and Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
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