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Molecular Pharmacology

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Research ArticleArticle

A Cannabinoid Quinone Inhibits Angiogenesis by Targeting Vascular Endothelial Cells

Natalya M. Kogan, Cristina Blázquez, Luis Álvarez, Ruth Gallily, Michael Schlesinger, Manuel Guzmán and Raphael Mechoulam
Molecular Pharmacology July 2006, 70 (1) 51-59; DOI: https://doi.org/10.1124/mol.105.021089
Natalya M. Kogan
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Cristina Blázquez
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Luis Álvarez
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Ruth Gallily
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Michael Schlesinger
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Manuel Guzmán
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Raphael Mechoulam
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Abstract

Recent findings on the inhibition of angiogenesis and vascular endothelial cell proliferation by anthracycline antibiotics, which contain a quinone moiety, make this type of compound a very promising lead in cancer research/therapy. We have reported that a new cannabinoid anticancer quinone, cannabidiol hydroxyquinone (HU-331), is highly effective against tumor xenografts in nude mice. For evaluation of the antiangiogenic action of cannabinoid quinones, collagen-embedded rat aortic ring assay was used. The ability of cannabinoids to cause endothelial cell apoptosis was assayed by TUNEL staining and flow cytometry analysis. To examine the genes and pathways targeted by HU-331 in vascular endothelial cells, human cDNA microarrays and polymerase chain reaction were used. Immunostaining with anti-CD31 of tumors grown in nude mice served to indicate inhibition of tumor angiogenesis. HU-331 was found to be strongly antiangiogenic, significantly inhibiting angiogenesis at concentrations as low as 300 nM. HU-331 inhibited angiogenesis by directly inducing apoptosis of vascular endothelial cells without changing the expression of pro- and antiangiogenic cytokines and their receptors. A significant decrease in the total area occupied by vessels in HU-331-treated tumors was also observed. These data lead us to consider HU-331 to have high potential as a new antiangiogenic and anticancer drug.

  • Received November 23, 2005.
  • Accepted March 21, 2006.
  • The American Society for Pharmacology and Experimental Therapeutics
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Molecular Pharmacology: 70 (1)
Molecular Pharmacology
Vol. 70, Issue 1
1 Jul 2006
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Research ArticleArticle

A Cannabinoid Quinone Inhibits Angiogenesis by Targeting Vascular Endothelial Cells

Natalya M. Kogan, Cristina Blázquez, Luis Álvarez, Ruth Gallily, Michael Schlesinger, Manuel Guzmán and Raphael Mechoulam
Molecular Pharmacology July 1, 2006, 70 (1) 51-59; DOI: https://doi.org/10.1124/mol.105.021089

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Research ArticleArticle

A Cannabinoid Quinone Inhibits Angiogenesis by Targeting Vascular Endothelial Cells

Natalya M. Kogan, Cristina Blázquez, Luis Álvarez, Ruth Gallily, Michael Schlesinger, Manuel Guzmán and Raphael Mechoulam
Molecular Pharmacology July 1, 2006, 70 (1) 51-59; DOI: https://doi.org/10.1124/mol.105.021089
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