Title | Role of soluble adenylyl cyclase in the heart. |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Chen J, Levin LR, Buck J |
Journal | Am J Physiol Heart Circ Physiol |
Volume | 302 |
Issue | 3 |
Pagination | H538-43 |
Date Published | 2012 Feb 01 |
ISSN | 1522-1539 |
Keywords | Adenylyl Cyclases, Animals, Humans, Myocardium, Myocytes, Cardiac, Signal Transduction, Solubility |
Abstract | This review discusses the potential place of soluble adenylyl cyclase (sAC) in the framework of signaling in the cardiovascular system. cAMP has been studied as a critical and pleiotropic second messenger in cardiomyocytes, endothelial cells, and smooth muscle vascular cells for many years. It is involved in the transduction of signaling by catecholamines, prostaglandins, adenosine, and glucagon, just to name a few. These hormones can act via cAMP by binding to a G protein-coupled receptor on the plasma membrane with subsequent activation of a heterotrimeric G protein and its downstream effector, transmembrane adenylyl cyclase. This has long been the canonical standard for cAMP production in a cell. However, the relatively recent discovery of a unique source of cAMP, sAC, creates the potential for a shift in this signaling paradigm. In fact, sAC has been shown to play a role in apoptosis in coronary endothelial cells and cardiomyocytes. Additionally, it links nutrient utilization with ATP production in the liver and brain, which suggests one of many potential roles for sAC in cardiac function. The possibility of producing cAMP from a source distal to the plasma membrane provides a critical new building block for reconstructing the cellular signaling infrastructure. |
DOI | 10.1152/ajpheart.00701.2011 |
Alternate Journal | Am. J. Physiol. Heart Circ. Physiol. |
PubMed ID | 22058150 |
PubMed Central ID | PMC3353791 |
Grant List | GM-07739 / GM / NIGMS NIH HHS / United States R01 HD038722 / HD / NICHD NIH HHS / United States R01 GM062328 / GM / NIGMS NIH HHS / United States R01 NS055255 / NS / NINDS NIH HHS / United States GM-62328 / GM / NIGMS NIH HHS / United States R01 HD059913 / HD / NICHD NIH HHS / United States T32 GM007739 / GM / NIGMS NIH HHS / United States HD-059913 / HD / NICHD NIH HHS / United States |