Cited by 298Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionGenetics, Aging, and Longevity in Model Organisms

Deletion of p66 shc Gene Protects Against Age-Related Endothelial Dysfunction

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Francia, Pietro, delli Gatti, Chiara, Bachschmid, Markus, Martin-Padura, Ines, Savoia, Carmine, Migliaccio, Enrica, Pelicci, Pier Giuseppe, Schiavoni, Marzia +3 more·2004·Circulation

Abstract

Background— Enhanced production of reactive oxygen species (ROS) has been recognized as the major determinant of age-related endothelial dysfunction. The p66 shc protein controls cellular responses to oxidative stress. Mice lacking p66 shc (p66 shc−/− ) have increased resistance to ROS and a 30% prolonged life span. The present study investigates age-dependent changes of endothelial function in this model. Methods and Results— Aortic rings from young and old p66 shc−/− or wild-type (WT) mice were suspended for isometric tension recording. Nitric oxide (NO) release was measured by a porphyrinic microsensor. Expression of endothelial NO synthase (eNOS), inducible NOS (iNOS), superoxide dismutase, and nitrotyrosine-containing proteins was assessed by Western blotting. Nitrotyrosine residues were also identified by immunohistochemistry. Superoxide (O 2 − ) production was determined by coelenterazine-enhanced chemiluminescence. Endothelium-dependent relaxation in response to acetylcholine was age-dependently impaired in WT mice but not in p66 shc−/− mice. Accordingly, an age-related decline of NO release was found in WT but not in p66 shc−/− mice. The expression of eNOS and manganese superoxide dismutase was not affected by aging either in WT or in p66 shc−/− mice, whereas iNOS was upregulated only in old WT mice. It is interesting that old WT mice displayed a significant increase of O 2 − production as well as of nitrotyrosine expression compared with young animals. Such age-dependent changes were not found in p66 shc−/− mice. Conclusions— We report that inactivation of the p66 shc gene protects against age-dependent, ROS-mediated endothelial dysfunction. These findings suggest that the p66 shc is part of a signal transduction pathway also relevant to endothelial integrity and may represent a novel target to prevent vascular aging.

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  • p66Shc−/− mice have reduced age-dependent endothelial dysfunction.

    “Mutant p66Shc−/− mice have been reported to be resistant to oxidative stress and to have an increased lifespan185, as well as reduced age-dependent endothelial dysfunction186.”
  • Mitochondrial dysfunction may play an important role in large elastic artery stiffening and endothelial dysfunction with aging via modulation of oxidative stress.

    “recent evidence suggests that mitochondrial dysfunction may play an important role in large elastic artery stiffening and endothelial dysfunction with aging via modulation of oxidative stress (33, 35, 56, 198).”

    From Inorganic nitrite supplementation for healthy arterial aging (2014) · cites this paper as [56]

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  1. 10.1161/hyp.30.4.817 · DOI
  2. 10.1161/res.83.3.279 · DOI
  3. 10.1161/circ.97.1.108 · DOI
  4. 1995, Am J Physiol, 268, L699
  5. 1997, Am J Physiol, 273, H1941
  6. 10.1161/hyp.38.2.274 · DOI
  7. 10.1161/hyp.37.2.529 · DOI
  8. 10.1161/atvb.19.12.2854 · DOI

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Authors
Francia, P., delli Gatti, C., Bachschmid, M., Martin-Padura, I., Savoia, C., Migliaccio, E., Pelicci, P. G., Schiavoni, M., Lüscher, T. F., Volpe, M., & Cosentino, F.
Affiliations
  • University of Konstanz (DE)
  • From Cardiovascular Research & Cardiology, Institute of Physiology, Zürich, Irchel and University Hospital, Zürich, Switzerland (P.F., C.D.G., M.S., T.F.L., F.C.); Division of Cardiology, 2nd Faculty of Medicine, University “La Sapienza,” Rome, and IRCCS Neuromed, Pozzilli (IS), Italy (P.F., C.S., M.V., F.C.); Department of Biology, University of Konstanz, Germany (M.B.); and Department of Experimental Oncology of the European Institute of Oncology, Milan, Italy (I.M.-P., E.M., P.G.P.).
Venue
Circulation
Published
2004-11-02
Volume
110
Issue
18
Pages
2889-2895
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2101209889
Cited by
298
References
29
Citations by year
2026: 4 · 2025: 13 · 2024: 6 · 2023: 6 · 2022: 9 · 2021: 13 · 2020: 15 · 2019: 13 · 2018: 14 · 2017: 11 · 2016: 14 · 2015: 10 · 2014: 17 · 2013: 20 · 2012: 18
FWCI
8.76
Type
journal article
Language
en
Open access
Licence
public-domain
Locations
  • Circulation (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
Funders
  • National Research Foundation
  • Schweizerische Herzstiftung
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
p66Shc, endothelial dysfunction, vascular aging, reactive oxygen species, oxidative stress, nitric oxide, nitrotyrosine, superoxide production, endothelial nitric oxide synthase, inducible nitric oxide synthase, superoxide dismutase, acetylcholine-induced relaxation, knockout mice
MeSH terms
Src Homology 2 Domain-Containing, Transforming Protein 1, Aging, Animals, Aorta, Endothelium, Vascular, Isometric Contraction, Longevity, Male, Nitric Oxide, Proteins, Superoxide Dismutase, Tyrosine, Vasoconstriction, Reactive Oxygen Species, Mice, Knockout, Oxidative Stress, Nitric Oxide Synthase, Adaptor Proteins, Signal Transducing, Mice, Nitric Oxide Synthase Type II, Nitric Oxide Synthase Type III, Shc Signaling Adaptor Proteins

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