Cited by 233Caveolin-1 and cellular processesLipid Membrane Structure and BehaviorNitric Oxide and Endothelin Effects

Distinction between signaling mechanisms in lipid rafts vs. caveolae

Open access
Sowa, Grzegorz, Pypaert, Marc, Sessa, William C.·2001·Proceedings of the National Academy of Sciences

Abstract

The relative importance of lipid rafts vs. specialized rafts termed caveolae to influence signal transduction is not known. Here we show that in cells lacking caveolae, the dually acylated protein, endothelial nitric oxide synthase (eNOS), localizes to cholesterol-rich lipid raft domains of the plasma membrane. In these cells, expression of caveolin-1 (cav-1) stimulates caveolae biogenesis, promotes the interaction of cav-1 with eNOS, and the inhibition of NO release from cells. Interestingly, in cells where cav-1 does not drive caveolae assembly, despite equal levels of cav-1 and eNOS and localization of both proteins to raft domains of the plasmalemma, the physical interaction of eNOS with cav-1 is dramatically less resulting in less inhibition of NO release. Thus, cav-1 concentrated in caveolae, not in rafts, is in closer proximity to eNOS and is necessary for negative regulation of eNOS function, thereby providing the first clear example of spatial regulation of signaling in this organelle that is distinct from raft domains.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.241409998

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • NOX2 expression has been reported in other cell types including endothelial cells and adventitial fibroblasts.

    “NOX2 expression has been also reported in other cell types including endothelial cells and adventitial fibroblasts (376, 382, 657, 714, 715, 736, 876) (FIGURE 9, Table 5).”
  • Macrophage NOX2 is more detrimental in the development of cardiovascular disease.

    “The current paradigm indicates that macrophage NOX2 is more detrimental in the development of cardiovascular disease (395, 876), with endothelial NOX2 probably involved in the initiation, but not so much in the development of the disease, and a subsequent progress of the atherosclerotic lesion dependent on immune cells (243, 573, 976).”
  • NOX4 is the most abundant isoform in ECs, and it is also present in VSMCs and adventitial fibroblasts.

    “NOX4 is the most abundant isoform in ECs, and it is also present in VSMCs and adventitial fibroblasts (10, 265, 736, 832, 876, 1036).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Sowa, G., Pypaert, M., & Sessa, W. C.
Affiliations
Yale University (US)
Corresponding author
Sessa, William C.
Venue
Proceedings of the National Academy of Sciences
Published
2001-11-13
Volume
98
Issue
24
Pages
14072-14077
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2076606695
Cited by
233
References
31
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 7 · 2020: 8 · 2019: 5 · 2018: 4 · 2017: 7 · 2016: 4 · 2015: 7 · 2014: 4 · 2013: 3 · 2012: 13
FWCI
6.89
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Heart, Lung, and Blood Institute (HL-61371, HL-64793, R01HL064793, R01HL057665, R01HL061371, R37HL061371)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Caveolin-1 and cellular processes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
lipid rafts, caveolae, caveolin-1, endothelial nitric oxide synthase, signal transduction, cholesterol, protein-protein interaction, nitric oxide release, plasma membrane, spatial regulation of signaling
MeSH terms
Animals, Cells, Cultured, Cholesterol, Humans, Nitric Oxide, Rats, Inbred F344, Thyroid Gland, Signal Transduction, Nitric Oxide Synthase, Caveolae, Membrane Microdomains, Caveolins, Caveolin 1, Rats, Nitric Oxide Synthase Type III

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review