Matrix Metalloproteinase-14 (MTi-MMP)-Mediated Endoglin Shedding Inhibits Tumor Angiogenesis

Endoglin is a transforming growth factor-beta coreceptor with a crucial role in angiogenesis. A soluble form of endoglin is present in the circulation, but the role of soluble endoglin (sEndoglin) is poorly understood. In addition, the endoglin shedding mechanism is not known. Therefore, we examined...

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Veröffentlicht in:Cancer research (Chicago, Ill.) Ill.), 2010-05, Vol.70 (10), p.4141-4150
Hauptverfasser: HAWINKELS, Lukas J. A. C, KUIPER, Patricia, WIERCINSKA, Eliza, VERSPAGET, Hein W, ZHEN LIU, PARDALI, Evangelia, SIE, Cornelis F. M, TEN DIJKE, Peter
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container_end_page 4150
container_issue 10
container_start_page 4141
container_title Cancer research (Chicago, Ill.)
container_volume 70
creator HAWINKELS, Lukas J. A. C
KUIPER, Patricia
WIERCINSKA, Eliza
VERSPAGET, Hein W
ZHEN LIU
PARDALI, Evangelia
SIE, Cornelis F. M
TEN DIJKE, Peter
description Endoglin is a transforming growth factor-beta coreceptor with a crucial role in angiogenesis. A soluble form of endoglin is present in the circulation, but the role of soluble endoglin (sEndoglin) is poorly understood. In addition, the endoglin shedding mechanism is not known. Therefore, we examined the role of sEndoglin in tumor angiogenesis and the mechanism by which the extracellular domain of endoglin is released from the membrane.In colorectal cancer specimens, we observed high endothelial endoglin protein expression, accompanied with slightly lower sEndoglin levels in the circulation, compared with healthy controls. In vitro analysis using endothelial sprouting assays revealed that sEndoglin reduced spontaneous and vascular endothelial growth factor-induced endothelial sprouting. Human umbilical vascular endothelial cells were found to secrete high levels of sEndoglin. Endoglin shedding was inhibited by matrix metalloproteinase (MMP) inhibitors and MMP-14 short hairpin RNA, indicating MMP-14 as the major endoglin shedding protease. Coexpression of endoglin and membrane-bound MMP-14 led to a strong increase in sEndoglin levels. Endoglin shedding required a direct interaction between endoglin and membrane-localized MMP-14. Using cleavage site mutants, we determined that MMP-14 cleaved endoglin at a site in close proximity to the transmembrane domain. Taken together, this study shows that MMP-14 mediates endoglin shedding, which may regulate the angiogenic potential of endothelial cells in the (colorectal) tumor microenvironment.
doi_str_mv 10.1158/0008-5472.can-09-4466
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A. C ; KUIPER, Patricia ; WIERCINSKA, Eliza ; VERSPAGET, Hein W ; ZHEN LIU ; PARDALI, Evangelia ; SIE, Cornelis F. M ; TEN DIJKE, Peter</creator><creatorcontrib>HAWINKELS, Lukas J. A. C ; KUIPER, Patricia ; WIERCINSKA, Eliza ; VERSPAGET, Hein W ; ZHEN LIU ; PARDALI, Evangelia ; SIE, Cornelis F. M ; TEN DIJKE, Peter</creatorcontrib><description>Endoglin is a transforming growth factor-beta coreceptor with a crucial role in angiogenesis. A soluble form of endoglin is present in the circulation, but the role of soluble endoglin (sEndoglin) is poorly understood. In addition, the endoglin shedding mechanism is not known. Therefore, we examined the role of sEndoglin in tumor angiogenesis and the mechanism by which the extracellular domain of endoglin is released from the membrane.In colorectal cancer specimens, we observed high endothelial endoglin protein expression, accompanied with slightly lower sEndoglin levels in the circulation, compared with healthy controls. 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subjects Adenoma - blood supply
Adenoma - metabolism
Adenoma - prevention & control
Animals
Antigens, CD - genetics
Antigens, CD - metabolism
Antineoplastic agents
Biological and medical sciences
Cell Membrane - metabolism
Cells, Cultured
Cercopithecus aethiops
Colon - cytology
Colon - metabolism
Colorectal Neoplasms - blood supply
Colorectal Neoplasms - metabolism
Colorectal Neoplasms - prevention & control
COS Cells
Endoglin
Endothelium, Vascular - cytology
Endothelium, Vascular - metabolism
Enzyme-Linked Immunosorbent Assay
Humans
Immunoenzyme Techniques
Matrix Metalloproteinase 14 - genetics
Matrix Metalloproteinase 14 - metabolism
Matrix Metalloproteinase Inhibitors
Medical sciences
Neovascularization, Pathologic - prevention & control
Pharmacology. Drug treatments
Receptors, Cell Surface - genetics
Receptors, Cell Surface - metabolism
Rectum - cytology
Rectum - metabolism
Reverse Transcriptase Polymerase Chain Reaction
RNA, Messenger - genetics
RNA, Messenger - metabolism
RNA, Small Interfering - pharmacology
Tumors
Umbilical Veins - cytology
Umbilical Veins - metabolism
title Matrix Metalloproteinase-14 (MTi-MMP)-Mediated Endoglin Shedding Inhibits Tumor Angiogenesis
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