Irradiation induces upregulation of CD31 in human endothelial cells.

2.50
Hdl Handle:
http://hdl.handle.net/10541/87934
Title:
Irradiation induces upregulation of CD31 in human endothelial cells.
Authors:
Quarmby, Steven L; Kumar, Patricia; Wang, Ji Min; Macro, Janet A; Hutchinson, Jerry J; Hunter, Robin D; Kumar, Shant
Abstract:
Radiation-induced vascular injury is believed to be a major factor contributing to parenchymal atrophy, fibrosis and necrosis in normal tissue after radiotherapy. In this study irradiation of human umbilical vein endothelial cells (HUVECs) significantly increased adherence of U-937 cells in a time-dependent manner. Given the potential multifunctional role of CD31 in the vasculature we have examined the possible effects of irradiation on levels of CD31 expression in HUVECs. Irradiation upregulated CD31 expression on HUVECs, independently of initial plating density and radiation-induced changes such as cell number, cell cycle stage, or cell size. CD31 mRNA levels were raised in irradiated HUVECs relative to controls. Both CD31 mRNA and surface protein showed similar changes, suggesting that the increase in mRNA in irradiated HUVECs is responsible for the elevation in cell surface protein. A semi-quantitative study of tissue specimens from patients who had received radiotherapy indicated that CD31 staining in the blood vessels from irradiated tissues was increased compared with controls. Endothelial CD31 is important in the transmigration of leukocytes. We have demonstrated that the incorporation of monoclonal antibody to CD31 significantly inhibited the transmigration of human peripheral blood leukocytes through a monolayer of irradiated HUVECs. Taken together these data strongly suggest that irradiation induces a marked increase in CD31 expression on endothelial cells as part of a general response to irradiation. Its upregulation may play an important role in the development of radiation-induced normal tissue damage and thus is a possible target for therapeutic intervention.
Affiliation:
Department of Pathological Sciences, University of Manchester, Christie Hospital, Metropolitan University of Manchester, Manchester, UK.
Citation:
Irradiation induces upregulation of CD31 in human endothelial cells. 1999, 19 (3):588-97 Arterioscler. Thromb. Vasc. Biol.
Journal:
Arteriosclerosis, Thrombosis, and Vascular biology
Issue Date:
Mar-1999
URI:
http://hdl.handle.net/10541/87934
PubMed ID:
10073961
Type:
Article
Language:
en
ISSN:
1079-5642
Appears in Collections:
All Christie Publications

Full metadata record

DC FieldValue Language
dc.contributor.authorQuarmby, Steven Len
dc.contributor.authorKumar, Patriciaen
dc.contributor.authorWang, Ji Minen
dc.contributor.authorMacro, Janet Aen
dc.contributor.authorHutchinson, Jerry Jen
dc.contributor.authorHunter, Robin Den
dc.contributor.authorKumar, Shanten
dc.date.accessioned2009-12-14T17:13:54Z-
dc.date.available2009-12-14T17:13:54Z-
dc.date.issued1999-03-
dc.identifier.citationIrradiation induces upregulation of CD31 in human endothelial cells. 1999, 19 (3):588-97 Arterioscler. Thromb. Vasc. Biol.en
dc.identifier.issn1079-5642-
dc.identifier.pmid10073961-
dc.identifier.urihttp://hdl.handle.net/10541/87934-
dc.description.abstractRadiation-induced vascular injury is believed to be a major factor contributing to parenchymal atrophy, fibrosis and necrosis in normal tissue after radiotherapy. In this study irradiation of human umbilical vein endothelial cells (HUVECs) significantly increased adherence of U-937 cells in a time-dependent manner. Given the potential multifunctional role of CD31 in the vasculature we have examined the possible effects of irradiation on levels of CD31 expression in HUVECs. Irradiation upregulated CD31 expression on HUVECs, independently of initial plating density and radiation-induced changes such as cell number, cell cycle stage, or cell size. CD31 mRNA levels were raised in irradiated HUVECs relative to controls. Both CD31 mRNA and surface protein showed similar changes, suggesting that the increase in mRNA in irradiated HUVECs is responsible for the elevation in cell surface protein. A semi-quantitative study of tissue specimens from patients who had received radiotherapy indicated that CD31 staining in the blood vessels from irradiated tissues was increased compared with controls. Endothelial CD31 is important in the transmigration of leukocytes. We have demonstrated that the incorporation of monoclonal antibody to CD31 significantly inhibited the transmigration of human peripheral blood leukocytes through a monolayer of irradiated HUVECs. Taken together these data strongly suggest that irradiation induces a marked increase in CD31 expression on endothelial cells as part of a general response to irradiation. Its upregulation may play an important role in the development of radiation-induced normal tissue damage and thus is a possible target for therapeutic intervention.en
dc.language.isoenen
dc.subject.meshAlternative Splicing-
dc.subject.meshAntibodies, Monoclonal-
dc.subject.meshAntigens, CD31-
dc.subject.meshBlotting, Northern-
dc.subject.meshBlotting, Southern-
dc.subject.meshCell Adhesion-
dc.subject.meshCell Cycle-
dc.subject.meshCell Movement-
dc.subject.meshCell Size-
dc.subject.meshEndothelium, Vascular-
dc.subject.meshFibrosis-
dc.subject.meshFlow Cytometry-
dc.subject.meshGene Expression Regulation-
dc.subject.meshHumans-
dc.subject.meshLeukocytes-
dc.subject.meshRNA, Messenger-
dc.subject.meshReverse Transcriptase Polymerase Chain Reaction-
dc.subject.meshU937 Cells-
dc.subject.meshUmbilical Veins-
dc.subject.meshUp-Regulation-
dc.titleIrradiation induces upregulation of CD31 in human endothelial cells.en
dc.typeArticleen
dc.contributor.departmentDepartment of Pathological Sciences, University of Manchester, Christie Hospital, Metropolitan University of Manchester, Manchester, UK.en
dc.identifier.journalArteriosclerosis, Thrombosis, and Vascular biologyen
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