Evidence map›Paper›PMID 28705936›Full record

ArticleThe Journal of biological chemistry2017

CD14 is a key mediator of both lysophosphatidic acid and lipopolysaccharide induction of foam cell formation.

Dong An, Feng Hao, Fuqiang Zhang, Wei Kong, Jerold Chun, Xuemin Xu, Mei-Zhen Cui

Open access · hybridAbstract readComparative Study
In one paragraph

Article in The Journal of biological chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

20 citing papers in PubMed, 31 citations in OpenAlex.

  1. Review
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  6. Review
  7. New insights into macrophage subsets in atherosclerosis.Journal of molecular medicine (Berlin, Germany) · 2022
    Review
  8. Article
  9. Article
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  13. Review
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  16. Vascular Endothelial Cells and Innate Immunity.Arteriosclerosis, thrombosis, and vascular biology · 2020
    Review
  17. Article
  18. Article
  19. Review
  20. Article
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

7 authors at 3 institutions in 2 countries.

Dong AnFrom the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996.
Feng HaoFrom the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996.
Fuqiang ZhangFrom the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996.
Wei KongCollege of Life Sciences and.
Jerold ChunSanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037.
Xuemin XuFrom the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996.
Mei-Zhen CuiFrom the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996, cuim@utk.edu.
University of Tennessee at Knoxville · USChangchun University · CNDiscovery Institute · US

Funding

Novel mechanism mediating LPA-induced smooth muscle cell and vascular responsesR01HL107466 · NHLBI · UNIVERSITY OF TEXAS OF THE PERMIAN BASIN · PI CUI, MEI-ZHEN · 2011 to 2020
$3.3M
Pathogenic ROle of the Novel Mitochondrial Apoptotic PSAP in ALSR21NS095256 · NINDS · UNIVERSITY OF TEXAS OF THE PERMIAN BASIN · PI CUI, MEI-ZHEN · 2016 to 2017
$404k
NHLBI NIH HHS R01 HL107466NINDS NIH HHS R21 NS095256
6 · The paper itself

Abstract

Macrophage uptake of oxidized low-density lipoprotein (oxLDL) plays an important role in foam cell formation and the pathogenesis of atherosclerosis. We report here that lysophosphatidic acid (LPA) enhances lipopolysaccharide (LPS)-induced oxLDL uptake in macrophages. Our data revealed that both LPA and LPS highly induce the CD14 expression at messenger RNA and protein levels in macrophages. The role of CD14, one component of the LPS receptor cluster, in LPA-induced biological functions has been unknown. We took several steps to examine the role of CD14 in LPA signaling pathways. Knockdown of CD14 expression nearly completely blocked LPA/LPS-induced oxLDL uptake in macrophages, demonstrating for the first time that CD14 is a key mediator responsible for both LPA- and LPS-induced oxLDL uptake/foam cell formation. To determine the molecular mechanism mediating CD14 function, we demonstrated that both LPA and LPS significantly induce the expression of scavenger receptor class A type I (SR-AI), which has been implicated in lipid uptake process, and depletion of CD14 levels blocked LPA/LPS-induced SR-AI expression. We further showed that the SR-AI-specific antibody, which quenches SR-AI function, blocked LPA- and LPS-induced foam cell formation. Thus, SR-AI is the downstream mediator of CD14 in regulating LPA-, LPS-, and LPA/LPS-induced foam cell formation. Taken together, our results provide the first experimental evidence that CD14 is a novel connecting molecule linking both LPA and LPS pathways and is a key mediator responsible for LPA/LPS-induced foam cell formation. The LPA/LPS-CD14-SR-AI nexus might be the new convergent pathway, contributing to the worsening of atherosclerosis.

Indexed as

Absorption, PhysiologicalAnimalsBiomarkersBone Marrow CellsCells, CulturedFoam CellsGene Expression RegulationHumansIsoxazolesLipopolysaccharide ReceptorsLipopolysaccharidesLipoproteins, LDLLysophospholipidsMacrophagesMice, Inbred C57BLMice, Knockout3-(4-(4-((1-(2-chlorophenyl)ethoxy)carbonyl amino)-3-methyl-5-isoxazolyl) benzylsulfanyl) propanoic acidBiomarkersIsoxazolesLipopolysaccharide ReceptorsLipopolysaccharidesLipoproteins, LDLlysophosphatidic acidLysophospholipidsMsr1 protein, mouseoxidized low density lipoproteinPropionatesReceptors, Lysophosphatidic AcidScavenger Receptors, Class ACD14gene regulationlipid signalingmacrophagesignal transductionvascular biology

Identifiers

PMID28705936
PMCPMC5582834
OpenAlexW2736033135

What OpenQuestion holds

Textmetadata
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.