CREB-binding protein (CBP) regulates beta-adrenoceptor (beta-AR) - mediated apoptosis
Details
Publication Year 2013-07, Volume 20, Issue #7, Page 941-952
Journal Title
CELL DEATH AND DIFFERENTIATION
Publication Type
Journal Article
Abstract
Catecholamines regulate the beta-adrenoceptor/cyclic AMP-regulated protein kinase A (cAMP/PKA) pathway. Deregulation of this pathway can cause apoptotic cell death and is implicated in a range of human diseases, such as neuronal loss during aging, cardiomyopathy and septic shock. The molecular mechanism of this process is, however, only poorly understood. Here we demonstrate that the beta-adrenoceptor/cAMP/PKA pathway triggers apoptosis through the transcriptional induction of the pro-apoptotic BH3-only Bcl-2 family member Bim in tissues such as the thymus and the heart. In these cell types, the catecholamine-mediated apoptosis is abrogated by loss of Bim. Induction of Bim is driven by the transcriptional co-activator CBP (CREB-binding protein) together with the proto-oncogene c-Myc. Association of CBP with c-Myc leads to altered histone acetylation and methylation pattern at the Bim promoter site. Our findings have implications for understanding pathophysiology associated with a deregulated neuroendocrine system and for developing novel therapeutic strategies for these diseases.
Publisher
NATURE PUBLISHING GROUP
Keywords
FAMILY-MEMBER BIM; KINASE-A; CYCLIC-AMP; BETA(2)-ADRENERGIC RECEPTORS; HEART-FAILURE; CELL LYMPHOMA; B-CELLS; STRESS; ACTIVATION; EXPRESSION
WEHI Research Division(s)
Molecular Genetics Of Cancer
Rights Notice
© 2013 ADMC Associazione Differenziamento e Morte Cellulare


Creation Date: 2013-07-01 12:00:00
Last Modified: 0001-01-01 12:00:00
An error has occurred. This application may no longer respond until reloaded. Reload 🗙