4.7 Article

The Antiangiogenic Compound Aeroplysinin-1 Induces Apoptosis in Endothelial Cells by Activating the Mitochondrial Pathway

Journal

MARINE DRUGS
Volume 10, Issue 9, Pages 2033-2046

Publisher

MDPI
DOI: 10.3390/md10092033

Keywords

aeroplysinin-1; angiogenesis; apoptosis; caspases

Funding

  1. Spanish Ministry of Science and Innovation [PS09/02216, PET2008-0145]
  2. ISCIII [PS09/02216, PET2008-0145]
  3. FEDER [PS09/02216, PET2008-0145]
  4. Andalusian Government [PIE P08-CTS-3759]

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Aeroplysinin-1 is a brominated metabolite extracted from the marine sponge Aplysina aerophoba that has been previously characterized by our group as a potent antiangiogenic compound in vitro and in vivo. In this work, we provide evidence of a selective induction of apoptosis by aeroplysinin-1 in endothelial cells. Studies on the nuclear morphology of treated cells revealed that aeroplysinin-1 induces chromatin condensation and nuclear fragmentation, and it increases the percentage of cells with sub-diploid DNA content in endothelial, but not in HCT-116, human colon carcinoma and HT-1080 human fibrosarcoma cells. Treatment of endothelial cells with aeroplysinin-1 induces activation of caspases-2, -3, -8 and -9, as well as the cleavage of apoptotic substrates, such as poly (ADP-ribose) polymerase and lamin-A in a caspase-dependent mechanism. Our data indicate a relevant role of the mitochondria in the apoptogenic activity of this compound. The observation that aeroplysinin-1 prevents the phosphorylation of Bad relates to the mitochondria-mediated induction of apoptosis by this compound.

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