JaLCDOI 10.18926/AMO/53999
FullText URL 70_1_13.pdf
Author Arum Tri Wahyuningsih| Shen, Lianhua| Kobayashi, Kazuko| Sasaki, Takanori| Takenaka, Fumiaki| Hanada, Takahisa| Akehi, Masaru| Akahoshi, Akiya| Ozeki, Eiichi| Ando, Eiji| Matsuura, Eiji|
Abstract Intact β2-glycoprotein I (iβ2GPI) is a glycoprotein that regulates coagulation and fibrinolysis. Nicked β2GPI (nβ2GPI) possesses an angiogenic property at a relatively low concentration, and an antiangiogenic property at a high concentration. Here we investigated the functions of βi 2GPI and nβ2GPI in vascular endothelial growth factor (VEGF)-A-induced endothelial cell proliferation and tube formation. We used noninvasive PET imaging to analyze the in vivo distribution of intravenously injected β2GPI variants in tumor lesions in mice. iβ2GPI was incubated with plasmin to obtain nβ2GPI, and its N-terminal sequence was analyzed. nβ2GPI had at least one other cleavage site upstream of the β2GPIʼs domain V, whereas the former plasmin-cleavage site locates between K317 and T318. Both of intact and nicked β2GPI significantly inhibited the VEGF-A-induced cell proliferation and the tube formation of human umbilical vein endothelial cells (HUVECs). PET imaging visualized considerably distributed intensities of all tested β2GPI variants in tumor lesions of pancreatic tumor cell-xenografts. These results indicate that β2GPI may be physiologically and pathophysiologically important in the regulation of not only coagulation and fibrinolysis, but also angiogenesis.
Keywords β2-glycoprotein I (β2GPI) angiogenesis vascular endothelial growth factor-A (VEGF-A) positron emission tomography (PET) imaging
Amo Type Original Article
Published Date 2016-02
Publication Title Acta Medica Okayama
Volume volume70
Issue issue1
Publisher Okayama University Medical School
Start Page 13
End Page 24
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2016 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 26899605
Web of Sience KeyUT 000371288700002
Author Matsuura, Eiji|
Published Date 2013-04-01
Publication Title 岡山医学会雑誌
Volume volume125
Issue issue1
Content Type Journal Article
Author Matsuura, Eiji| Igarashi, Yoshiko| Yasuda, Tatsuji| Triplett, Douglas A.| Koike, Takao|
Published Date 1994-02-01
Publication Title Journal of Experimental Medicine
Volume volume179
Issue issue2
Content Type Journal Article
JaLCDOI 10.18926/AMO/32848
FullText URL fulltext.pdf
Author Huang, Zhenyu| Liu, Qingping| Li, Wenzhe| Wang, Renjun| Wang, Dan| Zhang, Yingbiao| Zhang, Fan| Chi, Yan| Liu, Zhe| Matsuura, Eiji| Liu, Zibo| Zhang, Qiming|
Abstract <p>We investigated the molecular mechanisms responsible for the induction of apoptosis in mouse monocytic macrophage cell line J774A.1 stimulated by 7-ketocholesterol (7-KC). Cell apoptosis was detected by Annexin V-propidium iodide (PI) staining. The DNA-binding activity of nuclear factor kappa B (NF-kappaB) was assessed by electrophoretic mobility shift assay (EMSA). Results showed that 7-KC-stimulation in J774A.1 cells activated NF-kappaB, which is involved in cell apoptosis, in a time- and dose-dependent manners. 7-KC was also found to increase the binding activity of NF-kappaB to specific DNA binding sites, a possible mechanism for the induction of the cell apoptosis. Moreover, these effects were partially inhibited by pyrrolidine dithiocarbamate (PDTC), an NF-kappaB inhibitor. Taken together, 7-KC may be an important factor in atherosclerosis due to the ability of 7-KC to induce cell apoptosis, which is at least partially mediated through the activation of NF-kappaB.</p>
Keywords 7-KC NF-?B apoptosis atherosclerosis
Amo Type Original Article
Published Date 2010-04
Publication Title Acta Medica Okayama
Volume volume64
Issue issue2
Publisher Okayama University Medical School
Start Page 85
End Page 93
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 20424663
Web of Sience KeyUT 000276996900002
Author 松浦 栄次|
Published Date 2002-05-30
Publication Title 岡山医学会雑誌
Volume volume114
Issue issue1
Content Type Journal Article
Author Matsuura, Eiji|
Published Date 1994-03-25
Publication Title
Content Type Thesis or Dissertation