Inhibition of vascular endothelial cells by 1,4-phenylenebis (methylene)selenocyanate--a novel chemopreventive organoselenium compound

Organoselenium compound 1,4-phenylenebis(methylene)selenocyanate (p-XSC) was investigated for its effects on endothelial cell proliferation in vitro and angiogenesis in vivo. The organoselenium compound, p-XSC, has been shown to prevent carcinogen-induced tumorigenesis in murine model systems with l...

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Bibliographic Details
Published inAnticancer research Vol. 21; no. 3B; p. 1945
Main Authors Schumacher, J J, Upadhyaya, P, Ramakrishnan, S
Format Journal Article
LanguageEnglish
Published Greece 01.05.2001
Subjects
Animals
Anticarcinogenic Agents - pharmacology
Apoptosis
Cell Survival
Chick Embryo
Collagen - metabolism
Dose-Response Relationship, Drug
Drug Combinations
Endothelium, Vascular - cytology
Endothelium, Vascular - drug effects
Humans
In Situ Nick-End Labeling
Laminin - metabolism
Organoselenium Compounds - pharmacology
Proteoglycans - metabolism
Time Factors
Umbilical Veins - cytology
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Summary:Organoselenium compound 1,4-phenylenebis(methylene)selenocyanate (p-XSC) was investigated for its effects on endothelial cell proliferation in vitro and angiogenesis in vivo. The organoselenium compound, p-XSC, has been shown to prevent carcinogen-induced tumorigenesis in murine model systems with low toxicity. Since tumor growth and metastasis are dependent on angiogenesis, we investigated the effects of the organoselenium compound on this process. Human umbilical vein endothelial cells treated with p-XSC showed concentration dependent inhibition of protein synthesis and cell viability in vitro with a TCID50 value of 6 microM. Subsequently, we studied the effects of p-XSC on experimental angiogenesis. Addition of p-XSC to three-dimensional cultures inhibited endothelial cell tube formation. Furthermore, p-XSC treatment inhibited growth factor induced angiogenesis in chick chorioallantoic membrane assays and i.p. administration of p-XSC inhibited neovascularization induced by tumor cells implanted subcutaneously into athymic mice. These studies suggest that vascular endothelium is an additional target for the chemopreventive organoselenium compound p-XSC.
ISSN:0250-7005