| Literature DB >> 26258640 |
Joseph R Burgoyne1, Olena Rudyk1, Hyun-Ju Cho1, Oleksandra Prysyazhna1, Natasha Hathaway1, Amanda Weeks2, Rachel Evans3, Tony Ng3, Katrin Schröder4, Ralf P Brandes4, Ajay M Shah5, Philip Eaton1.
Abstract
Angiogenesis is essential for tissue development, wound healing and tissue perfusion, with its dysregulation linked to tumorigenesis, rheumatoid arthritis and heart disease. Here we show that pro-angiogenic stimuli couple to NADPH oxidase-dependent generation of oxidants that catalyse an activating intermolecular-disulphide between regulatory-RIα subunits of protein kinase A (PKA), which stimulates PKA-dependent ERK signalling. This is crucial to blood vessel growth as 'redox-dead' Cys17Ser RIα knock-in mice fully resistant to PKA disulphide-activation have deficient angiogenesis in models of hind limb ischaemia and tumour-implant growth. Disulphide-activation of PKA represents a new therapeutic target in diseases with aberrant angiogenesis.Entities:
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Year: 2015 PMID: 26258640 DOI: 10.1038/ncomms8920
Source DB: PubMed Journal: Nat Commun ISSN: 2041-1723 Impact factor: 14.919