The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
Differential αv integrin–mediated Ras-ERK signaling during two pathways of angiogenesis
Open accessAbstract
Antagonists of αvβ3 and αvβ5 disrupt angiogenesis in response to bFGF and VEGF, respectively. Here, we show that these αv integrins differentially contribute to sustained Ras-extracellular signal–related kinase (Ras-ERK) signaling in blood vessels, a requirement for endothelial cell survival and angiogenesis. Inhibition of FAK or αvβ5 disrupted VEGF-mediated Ras and c-Raf activity on the chick chorioallantoic membrane, whereas blockade of FAK or integrin αvβ3 had no effect on bFGF-mediated Ras activity, but did suppress c-Raf activation. Furthermore, retroviral delivery of active Ras or c-Raf promoted ERK activity and angiogenesis, which anti-αvβ5 blocked upstream of Ras, whereas anti-αvβ3 blocked downstream of Ras, but upstream of c-Raf. The activation of c-Raf by bFGF/αvβ3 not only depended on FAK, but also required p21-activated kinase-dependent phosphorylation of serine 338 on c-Raf, whereas VEGF-mediated c-Raf phosphorylation/activation depended on Src, but not Pak. Thus, integrins αvβ3 and αvβ5 differentially regulate the Ras-ERK pathway, accounting for distinct vascular responses during two pathways of angiogenesis.
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Cites
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Metadata
- Authors
- Hood, J. D., Frausto, R., Kiosses, W. B., Schwartz, M. A., & Cheresh, D. A.
- Venue
- The Journal of Cell Biology
- Publisher
- Rockefeller University Press
- Published
- 2003-09-01
- Volume
- 162
- Issue
- 5
- Pages
- 933-943
- ISSN
- 0021-9525 (ISSN-L)
- 1540-8140
- OpenAlex
- W2088037057
- Cited by
- 262
- References
- 55
- FWCI
- 8.69
- Type
- journal article
- Language
- en
- Open access
- bronze
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