Evidence map›Paper›PMID 27029009›Full record

ArticleJournal of vascular research2015

R-Ras Inhibits VEGF-Induced p38MAPK Activation and HSP27 Phosphorylation in Endothelial Cells.

Junko Sawada, Fangfei Li, Masanobu Komatsu

Open access · bronzeAbstract read
In one paragraph

Article in Journal of vascular research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Role of Non-Coding RNAs in Pathogenesis, Diagnosis, and Therapy of Legg-Calvé-Perthes Disease: A Systematic Review.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Junko SawadaCardiovascular Metabolism Program and Tumor Microenvironment and Cancer Immunology Program, Sanford-Burnham-Prebys Medical Discovery Institute at Lake Nona, Orlando, Fla., USA.
Fangfei Li
Masanobu Komatsu
Discovery Institute · US

Funding

Normalization of tumor vasculature by R-RasR01CA125255 · NCI · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI KOMATSU, MASANOBU · 2008 to 2018
$4.2M
NCI NIH HHS CA125255NCI NIH HHS R01 CA125255
6 · The paper itself

Abstract

R-Ras is a Ras family small GTPase that is highly expressed in mature functional blood vessels in normal tissues. It inhibits pathological angiogenesis and promotes vessel maturation and stabilization. Previous studies suggest that R-Ras affects cellular signaling in endothelial cells, pericytes and smooth-muscle cells to regulate vessel formation and remodeling in adult tissues. R-Ras suppresses VEGF-induced endothelial permeability and vessel sprouting while promoting normalization of pathologically developing vessels in mice. It attenuates VEGF receptor-2 (VEGFR2) activation by inhibiting internalization of the receptor upon VEGF ligand binding, leading to significant reduction of VEGFR2 autophosphorylation. Here, we show that R-Ras strongly suppresses the VEGF-dependent activation of stress-activated protein kinase-2/p38 mitogen-activated protein kinase (SAPK2/p38MAPK) and the phosphorylation of downstream heat-shock protein 27 (HSP27), a regulator of actin cytoskeleton organization, in endothelial cells. The suppression of p38MAPK activation and HSP27 phosphorylation by R-Ras concurred with altered actin cytoskeleton architecture, reduced membrane protrusion and inhibition of endothelial cell migration toward VEGF. Silencing of endogenous R-Ras by RNA interference increased membrane protrusion and cell migration stimulated by VEGF, and these effects were offset by p38MAPK inhibitor SB203580. These results suggest that R-Ras regulates angiogenic activities of endothelial cells in part via inhibition of the p38MAPK-HSP27 axis of VEGF signaling.

Indexed as

Actin CytoskeletonCell MovementCells, CulturedEnzyme ActivationHeat-Shock ProteinsHSP27 Heat-Shock ProteinsHumansHuman Umbilical Vein Endothelial CellsMitogen-Activated Protein Kinase 11Molecular ChaperonesNeovascularization, PhysiologicPhosphorylationProtein Kinase Inhibitorsras ProteinsRNA InterferenceSignal TransductionHeat-Shock ProteinsHSP27 Heat-Shock ProteinsHSPB1 protein, humanMitogen-Activated Protein Kinase 11Molecular ChaperonesProtein Kinase Inhibitorsras ProteinsRRAS protein, humanVascular Endothelial Growth Factor AVEGFA protein, human

Identifiers

PMID27029009
PMCPMC4842017
OpenAlexW2335242161

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.