Abstract
Control of cellular survival and proliferation is dependent on extracellular signals and is a prerequisite for ordered tissue development and maintenance. Activation of the cAMP responsive element binding protein (CREB) by phosphorylation has been implicated in the survival of mammalian cells. To define its roles in the mouse central nervous system, we disrupted Creb1 in brain of developing and adult mice using the Cre/loxP system. Mice with a Crem−/− background and lacking Creb in the central nervous system during development show extensive apoptosis of postmitotic neurons. By contrast, mice in which both Creb1 and Crem are disrupted in the postnatal forebrain show progressive neurodegeneration in the hippocampus and in the dorsolateral striatum. The striatal phenotype is reminiscent of Huntington disease and is consistent with the postulated role of CREB-mediated signaling in polyglutamine-triggered diseases.
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Acknowledgements
We thank B. Stride, E. Greiner and K. Unsicker for critical reading of the manuscript; E. Schmid, S. Ridder, A. Klewe-Nebenius, H. Glaser, S. Fehsenfeld, K. Anlag and T. Panek for expert technical assistance and N. Pollet, I. del Barco Barrantes and E. Casanova for stimulating discussions. This work was supported by grants from the European Community and the Deutsches Forschungsgemeinschaft and Forschergruppe (to G.S.). T.L. was supported by fellowships from the Human Frontier Science Program Organization and the Swiss National Science Foundation.
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Mantamadiotis, T., Lemberger, T., Bleckmann, S. et al. Disruption of CREB function in brain leads to neurodegeneration. Nat Genet 31, 47–54 (2002). https://doi.org/10.1038/ng882
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DOI: https://doi.org/10.1038/ng882
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