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Hyaluronan Receptor LYVE-1-Expressing Macrophages Maintain Arterial Tone through Hyaluronan-Mediated Regulation of Smooth Muscle Cell Collagen.

Immunity | 2018

The maintenance of appropriate arterial tone is critically important for normal physiological arterial function. However, the cellular and molecular mechanisms remain poorly defined. Here, we have shown that in the mouse aorta, resident macrophages prevented arterial stiffness and collagen deposition in the steady state. Using phenotyping, transcriptional profiling, and targeted deletion of Csf1r, we have demonstrated that these macrophages-which are a feature of blood vessels invested with smooth muscle cells (SMCs) in both mouse and human tissues-expressed the hyaluronan (HA) receptor LYVE-l. Furthermore, we have shown they possessed the unique ability to modulate collagen expression in SMCs by matrix metalloproteinase MMP-9-dependent proteolysis through engagement of LYVE-1 with the HA pericellular matrix of SMCs. Our study has unveiled a hitherto unknown homeostatic contribution of arterial LYVE-1+ macrophages through the control of collagen production by SMCs and has identified a function of LYVE-1 in leukocytes.

Pubmed ID: 30054204 RIS Download

Additional research tools detected in this publication

Antibodies used in this publication

Associated grants

  • Agency: Medical Research Council, United Kingdom
    Id: MC_UU_00008/2

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This is a list of tools and resources that we have found mentioned in this publication.


Subread (tool)

RRID:SCR_009803

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GENCODE (tool)

RRID:SCR_014966

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CD31 (PECAM-1) (antibody)

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Rabbit Anti-MMP9 Polyclonal Antibody, Unconjugated (antibody)

RRID:AB_776512

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Anti-Green Fluorescent Protein Antibody (antibody)

RRID:AB_10000240

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RAT ANTI MOUSE CD206 (antibody)

RRID:AB_324622

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CD68 antibody | FA-11 (antibody)

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Rabbit Anti-LYVE1 Polyclonal Antibody, Unconjugated (antibody)

RRID:AB_301509

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RRID:AB_11154598

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RRID:AB_398532

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APC/Cyanine7 anti-mouse Ly-6C (antibody)

RRID:AB_10640120

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CD64 a and b Alloantigens (antibody)

RRID:AB_647241

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edgeR (software resource)

RRID:SCR_012802

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Bioconductor (software resource)

RRID:SCR_006442

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RRID:SCR_001905

Software environment and programming language for statistical computing and graphics. R is integrated suite of software facilities for data manipulation, calculation and graphical display. Can be extended via packages. Some packages are supplied with the R distribution and more are available through CRAN family.It compiles and runs on wide variety of UNIX platforms, Windows and MacOS.

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Imaris (software resource)

RRID:SCR_007370

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GraphPad Prism (software resource)

RRID:SCR_002798

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FlowJo (software resource)

RRID:SCR_008520

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ImageJ (software resource)

RRID:SCR_003070

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CD31 (PECAM-1) (antibody)

RRID:AB_2252087

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RRID:AB_2252087

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