Adipocyte-Derived Microvesicles Are Associated with Multiple Angiogenic Factors and Induce Angiogenesis in Vivo and in Vitro

We previously reported that 3T3-L1 and rat primary adipocytes secreted microvesicles, known as adipocyte-derived microvesicles (ADMs). In the present study, we further characterized the 3T3-L1 ADMs and found that they exhibited angiogenic activity in vivo. Antibody arrays and gelatin zymography anal...

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Veröffentlicht in:Endocrinology (Philadelphia) 2010-06, Vol.151 (6), p.2567-2576
Hauptverfasser: Aoki, Naohito, Yokoyama, Rumi, Asai, Noriyuki, Ohki, Makiko, Ohki, Yuichi, Kusubata, Kaori, Heissig, Beate, Hattori, Koichi, Nakagawa, Yoshimi, Matsuda, Tsukasa
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container_issue 6
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container_title Endocrinology (Philadelphia)
container_volume 151
creator Aoki, Naohito
Yokoyama, Rumi
Asai, Noriyuki
Ohki, Makiko
Ohki, Yuichi
Kusubata, Kaori
Heissig, Beate
Hattori, Koichi
Nakagawa, Yoshimi
Matsuda, Tsukasa
description We previously reported that 3T3-L1 and rat primary adipocytes secreted microvesicles, known as adipocyte-derived microvesicles (ADMs). In the present study, we further characterized the 3T3-L1 ADMs and found that they exhibited angiogenic activity in vivo. Antibody arrays and gelatin zymography analyses revealed that several angiogenic and antiangiogenic proteins, including leptin, TNFα, acidic fibroblast growth factor (FGFa), interferon-γ, and matrix metalloprotease (MMP)-2 and MMP-9, were present in the ADMs. Gene expression of most of these angiogenic factors was induced in the adipose tissue of diet-induced obese mice. Furthermore, leptin, TNFα, and MMP-2 were up-regulated at the protein level in the adipocyte fractions prepared from epididymal adipose tissues of high-fat-diet-induced obese mice. ADMs induced cell migration and tube formation of human umbilical vein endothelial cells, which were partially suppressed by neutralizing antibodies to leptin, TNFα, or FGFa but not to interferon-γ. Supporting these data, a mixture of leptin, TNFα, and FGFa induced tube formation. ADMs also promoted cell invasion of human umbilical vein endothelial cells through Matrigel, which was suppressed by the addition of the MMP inhibitor 1,10′-phenanthroline and a neutralizing antibody to MMP-2 but not to MMP-9. These results suggest that ADMs are associated with multiple angiogenic factors and play a role in angiogenesis in adipose tissue. Adipocyte-derived microvesicles are associated with multiple angiogenic factors and exhibit angiogenic activity in vivo and in vitro.
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Adipocyte-derived microvesicles are associated with multiple angiogenic factors and exhibit angiogenic activity in vivo and in vitro.</description><subject>3T3-L1 Cells</subject><subject>Adipocytes</subject><subject>Adipocytes - metabolism</subject><subject>Adipose tissue</subject><subject>Angiogenesis</subject><subject>Angiogenesis inhibitors</subject><subject>Animals</subject><subject>Antibodies</subject><subject>Biological and medical sciences</subject><subject>Body fat</subject><subject>Cell Line</subject><subject>Cell migration</subject><subject>Cell Movement - physiology</subject><subject>Cell-Derived Microparticles - metabolism</subject><subject>Diet</subject><subject>Electrophoresis, Polyacrylamide Gel</subject><subject>Endothelial cells</subject><subject>Endothelial Cells - cytology</subject><subject>Fibroblast growth factor 1</subject><subject>Fibroblast Growth Factors - metabolism</subject><subject>Fractions</subject><subject>Fundamental and applied biological sciences. 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In the present study, we further characterized the 3T3-L1 ADMs and found that they exhibited angiogenic activity in vivo. Antibody arrays and gelatin zymography analyses revealed that several angiogenic and antiangiogenic proteins, including leptin, TNFα, acidic fibroblast growth factor (FGFa), interferon-γ, and matrix metalloprotease (MMP)-2 and MMP-9, were present in the ADMs. Gene expression of most of these angiogenic factors was induced in the adipose tissue of diet-induced obese mice. Furthermore, leptin, TNFα, and MMP-2 were up-regulated at the protein level in the adipocyte fractions prepared from epididymal adipose tissues of high-fat-diet-induced obese mice. ADMs induced cell migration and tube formation of human umbilical vein endothelial cells, which were partially suppressed by neutralizing antibodies to leptin, TNFα, or FGFa but not to interferon-γ. Supporting these data, a mixture of leptin, TNFα, and FGFa induced tube formation. ADMs also promoted cell invasion of human umbilical vein endothelial cells through Matrigel, which was suppressed by the addition of the MMP inhibitor 1,10′-phenanthroline and a neutralizing antibody to MMP-2 but not to MMP-9. These results suggest that ADMs are associated with multiple angiogenic factors and play a role in angiogenesis in adipose tissue. Adipocyte-derived microvesicles are associated with multiple angiogenic factors and exhibit angiogenic activity in vivo and in vitro.</abstract><cop>Chevy Chase, MD</cop><pub>Endocrine Society</pub><pmid>20382694</pmid><doi>10.1210/en.2009-1023</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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subjects 3T3-L1 Cells
Adipocytes
Adipocytes - metabolism
Adipose tissue
Angiogenesis
Angiogenesis inhibitors
Animals
Antibodies
Biological and medical sciences
Body fat
Cell Line
Cell migration
Cell Movement - physiology
Cell-Derived Microparticles - metabolism
Diet
Electrophoresis, Polyacrylamide Gel
Endothelial cells
Endothelial Cells - cytology
Fibroblast growth factor 1
Fibroblast Growth Factors - metabolism
Fractions
Fundamental and applied biological sciences. Psychology
Gelatin
Gelatinase A
Gelatinase B
Gene expression
Growth factors
High fat diet
High protein diet
Humans
Immunoblotting
In vivo methods and tests
Interferon
Interferon-gamma - metabolism
Leptin
Leptin - metabolism
Male
Matrix metalloproteinase
Matrix Metalloproteinase 2 - metabolism
Mice
Mice, Inbred C57BL
Neovascularization, Physiologic - physiology
Neutralizing
Polymerase Chain Reaction
Proteins
Tumor Necrosis Factor-alpha - metabolism
Tumor necrosis factor-α
Umbilical vein
Umbilical Veins - cytology
Vertebrates: endocrinology
γ-Interferon
title Adipocyte-Derived Microvesicles Are Associated with Multiple Angiogenic Factors and Induce Angiogenesis in Vivo and in Vitro
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