CREB regulates hepatic gluconeogenesis through the coactivator PGC-1

Stephan Herzig, Fanxin Long, Ulupi S. Jhala, Susan Hedrick, Rebecca Quinn, Anton Bauer, Dorothea Rudolph, Gunther Schutz, Cliff Yoon, Pere Puigserver, Bruce Spiegelman and Marc Montminy ()
Additional contact information
Stephan Herzig: Peptide Biology Laboratories, Salk Institute for Biological Studies
Fanxin Long: Peptide Biology Laboratories, Salk Institute for Biological Studies
Ulupi S. Jhala: Peptide Biology Laboratories, Salk Institute for Biological Studies
Susan Hedrick: Peptide Biology Laboratories, Salk Institute for Biological Studies
Rebecca Quinn: Joslin Diabetes Center
Anton Bauer: Molecular Biology of the Cell I, Deutsches Krebsforschungszentrum Im Neuenheimerfeld 280
Dorothea Rudolph: Molecular Biology of the Cell I, Deutsches Krebsforschungszentrum Im Neuenheimerfeld 280
Gunther Schutz: Molecular Biology of the Cell I, Deutsches Krebsforschungszentrum Im Neuenheimerfeld 280
Cliff Yoon: Dana-Farber Cancer Center, Harvard Medical School
Pere Puigserver: Dana-Farber Cancer Center, Harvard Medical School
Bruce Spiegelman: Dana-Farber Cancer Center, Harvard Medical School
Marc Montminy: Peptide Biology Laboratories, Salk Institute for Biological Studies

Nature, 2001, vol. 413, issue 6852, 179-183

Abstract: Abstract When mammals fast, glucose homeostasis is achieved by triggering expression of gluconeogenic genes in response to glucagon and glucocorticoids. The pathways act synergistically to induce gluconeogenesis (glucose synthesis), although the underlying mechanism has not been determined1,2,3,4. Here we show that mice carrying a targeted disruption of the cyclic AMP (cAMP) response element binding (CREB) protein gene, or overexpressing a dominant-negative CREB inhibitor, exhibit fasting hypoglycaemia and reduced expression of gluconeogenic enzymes. CREB was found to induce expression of the gluconeogenic programme through the nuclear receptor coactivator PGC-1, which is shown here to be a direct target for CREB regulation in vivo. Overexpression of PGC-1 in CREB-deficient mice restored glucose homeostasis and rescued expression of gluconeogenic genes. In transient assays, PGC-1 potentiated glucocorticoid induction of the gene for phosphoenolpyruvate carboxykinase (PEPCK), the rate-limiting enzyme in gluconeogenesis. PGC-1 promotes cooperativity between cyclic AMP and glucocorticoid signalling pathways during hepatic gluconeogenesis. Fasting hyperglycaemia* is strongly correlated with type II diabetes, so our results suggest that the activation of PGC-1 by CREB in liver contributes importantly to the pathogenesis of this disease.

Date: 2001
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DOI: 10.1038/35093131

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