Journal
CELLULAR SIGNALLING
Volume 15, Issue 9, Pages 813-827Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0898-6568(03)00058-5
Keywords
G protein-coupled receptor; adenosine; protein phosphorylation; cAMP; mitogen-activated protein kinases; ERK1/2; MAPK; JNK; p38; SAPK
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The purine nucleoside adenosine acts via four distinct adenosine receptor subtypes: the adenosine A(1), A(2A), A(2B), and A(3) receptor. They are all G protein-coupled receptors (GPCR) coupling to classical second messenger pathways such as modulation of cAMP production or the phospholipase C (PLC) pathway. In addition, they couple to mitogen-activated protein kinases (MAPK), which could give them a role in cell growth, survival, death and differentiation. Although each of the adenosine receptors can activate one or more of the MAPKs, the mechanisms appear to differ substantially, both between receptor subtypes in the same cell type and between the same receptor in different cell types. (C) 2003 Elsevier Science Inc. All rights reserved.
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