Evidence map›Paper›PMID 24030402›Full record

ArticleCirculation2013

KLF4 regulates abdominal aortic aneurysm morphology and deletion attenuates aneurysm formation.

Morgan Salmon, William F Johnston, Andrew Woo, Nicolas H Pope, Gang Su, Gilbert R Upchurch, Gary K Owens, Gorav Ailawadi

Open access · greenAbstract read
In one paragraph

Article in Circulation, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

80 citing papers in PubMed, 130 citations in OpenAlex.

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20 more citing papers are in PubMed but not listed here.

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

8 authors at 1 institution in 1 country.

Morgan SalmonDepartment of Surgery (M.S., W.F.J., A.W., N.H.P., G.S., G.R.U., G.A.) and The Robert M. Berne Cardiovascular Research Center (G.R.U., G.K.O., G.A.), University of Virginia School of Medicine, Charlottesville, VA.
William F Johnston
Andrew Woo
Nicolas H Pope
Gang Su
Gilbert R Upchurch
Gary K Owens
Gorav Ailawadi
University of Virginia · US

Funding

BASIC CARDIOVASCULAR RESEARCH TRAINING GRANTT32HL007284 · NHLBI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Brant E Isakson, Gary K Owens · 1985 to 2026
$19.6M
Cardiovascular Surgery Training ProgramT32HL007849 · NHLBI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI KRON, IRVING L., LAUBACH, VICTOR E · 1998 to 2025
$7.0M
Gender Differences in Experimental Aortic AneurysmsR01HL081629 · NHLBI · UNIVERSITY OF VIRGINIA · PI UPCHURCH, GILBERT RIVERS · 2007 to 2017
$4.1M
Role of OxPLs and Oct4 in SMC Phenotypic Switching in AtherosclerosisR01HL087867 · NHLBI · UNIVERSITY OF VIRGINIA · PI OWENS, GARY K · 2008 to 2016
$3.5M
Epigenetic Control of Smooth Muscle Cell Lineage and Phenotypic SwitchingR01HL057353 · NHLBI · UNIVERSITY OF VIRGINIA · PI OWENS, GARY K · 2008 to 2016
$3.5M
Role of IL1b in Regulating SMC and Macrophage Differentiation in AtherosclerosisR01HL121008 · NHLBI · UNIVERSITY OF VIRGINIA · PI OWENS, GARY K · 2014 to 2017
$2.2M
The Effects of KLF4 in experimental aortic aneurysm formationK08HL098560 · NHLBI · UNIVERSITY OF VIRGINIA · PI AILAWADI, GORAV · 2010 to 2014
$656k
NHLBI NIH HHS 08HL098560NHLBI NIH HHS K08 HL098560NHLBI NIH HHS R01 HL057353NHLBI NIH HHS R01 HL081629NHLBI NIH HHS R01 HL087867NHLBI NIH HHS R01 HL121008NHLBI NIH HHS T32 HL007284NHLBI NIH HHS T32 HL007849NHLBI NIH HHS T32HL007849
6 · The paper itself

Abstract

backgroundKLF4 mediates inflammatory responses after vascular injury/disease; however, the role of KLF4 in abdominal aortic aneurysms (AAAs) remains unknown. The goals of the present study were to (1) determine the role of KLF4 in experimental AAA; and (2) determine the effect of KLF4 on smooth muscle (SM) cells in AAAs. METHODS AND

resultsKLF4 expression progressively increased at days 3, 7, and 14 after aortic elastase perfusion in C57BL/6 mice. Separately, loss of a KLF4 allele conferred AAA protection using ERTCre+ KLF4 flx/wt mice in the elastase AAA model. In a third set of experiments, SM-specific loss of 1 and 2 KLF4 alleles resulted in progressively greater protection using novel transgenic mice (MYHCre+ flx/flx, flx/wt, and wt/wt) in the elastase AAA model compared with control. Elastin degradation, MAC2, and cytokine production (MCP1, tumor necrosis factor-α, and interleukin-23) were significantly attenuated, whereas α-actin staining was increased in KLF4 knockout mice versus controls. Results were verified in global KLF4 and SM-specific knockout mice using an angiotensin II model of aneurysm formation. KLF4 inhibition with siRNA attenuated downregulation of SM gene expression in vitro, whereas in vivo studies demonstrated that KLF4 binds to promoters of SM genes by chromatin immunoprecipitation analysis. Finally, human aortic aneurysms demonstrated significantly higher KLF4 expression that was localized to SM cells.

conclusionsKLF4 plays a critical role in aortic aneurysm formation via effects on SM cells. These results suggest that KLF4 regulates SM cell phenotypic switching and could be a potential therapeutic target for AAA disease.

Indexed as

Gene DeletionAnimalsAortic Aneurysm, AbdominalHumansKruppel-Like Factor 4Kruppel-Like Transcription FactorsMaleMiceMice, Inbred C57BLMice, KnockoutMice, TransgenicMyocytes, Smooth MuscleKLF4 protein, humanKlf4 protein, mouseKruppel-Like Factor 4Kruppel-Like Transcription FactorsaneurysmKLF4myocytes, smooth muscletranscription factorsvascular biology

Identifiers

PMID24030402
PMCPMC3922284
OpenAlexW1984662275

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.