4-Hydroxynonenal Contributes to Angiogenesis through a Redox-Dependent Sphingolipid Pathway: Prevention by Hydralazine Derivatives
Joint Authors
Nègre-Salvayre, Anne
Camaré, Caroline
Vanucci-Bacqué, Corinne
Augé, Nathalie
Pucelle, Mélanie
Bernis, Corinne
Swiader, Audrey
Baltas, Michel
Bedos-Belval, Florence
Salvayre, Robert
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-05
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The neovascularization of atherosclerotic lesions is involved in plaque development and may contribute to intraplaque hemorrhage and plaque fragilization and rupture.
Among the various proangiogenic agents involved in the neovascularization process, proatherogenic oxidized LDLs (oxLDLs) contribute to the formation of tubes via the generation of sphingosine 1-phosphate (S1P), a major mitogenic and proangiogenic sphingolipid mediator.
In this study, we investigated whether 4-hydroxynonenal (4-HNE), an aldehydic lipid oxidation product abundantly present in oxLDLs, contributes to their proangiogenic properties.
Immunofluorescence analysis of human atherosclerotic lesions from carotid endarterectomy showed the colocalization of HNE-adducts with CD31, a marker of endothelial cells, suggesting a close relationship between 4-HNE and neovessel formation.
In vitro, low 4-HNE concentration (0.5–1 µM) elicited the formation of tubes by human microvascular endothelial cells (HMEC-1), whereas higher concentrations were not angiogenic.
The formation of tubes by 4-HNE involved the generation of reactive oxygen species and the activation of the sphingolipid pathway, namely, the neutral type 2 sphingomyelinase and sphingosine kinase-1 (nSMase2/SK-1) pathway, indicating a role for S1P in the angiogenic signaling of 4-HNE.
Carbonyl scavengers hydralazine and bisvanillyl-hydralazone inhibited the nSMase2/SK1 pathway activation and the formation of tubes on Matrigel® evoked by 4-HNE.
Altogether, these results emphasize the role of 4-HNE in the angiogenic effect of oxLDLs and point out the potential interest of pharmacological carbonyl scavengers to prevent the neovascularization process.
American Psychological Association (APA)
Camaré, Caroline& Vanucci-Bacqué, Corinne& Augé, Nathalie& Pucelle, Mélanie& Bernis, Corinne& Swiader, Audrey…[et al.]. 2017. 4-Hydroxynonenal Contributes to Angiogenesis through a Redox-Dependent Sphingolipid Pathway: Prevention by Hydralazine Derivatives. Oxidative Medicine and Cellular Longevity،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1196366
Modern Language Association (MLA)
Camaré, Caroline…[et al.]. 4-Hydroxynonenal Contributes to Angiogenesis through a Redox-Dependent Sphingolipid Pathway: Prevention by Hydralazine Derivatives. Oxidative Medicine and Cellular Longevity No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1196366
American Medical Association (AMA)
Camaré, Caroline& Vanucci-Bacqué, Corinne& Augé, Nathalie& Pucelle, Mélanie& Bernis, Corinne& Swiader, Audrey…[et al.]. 4-Hydroxynonenal Contributes to Angiogenesis through a Redox-Dependent Sphingolipid Pathway: Prevention by Hydralazine Derivatives. Oxidative Medicine and Cellular Longevity. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1196366
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1196366