Anticancer effects of geopropolis produced by stingless bees on canine osteosarcoma cells in vitro

• Autor(a) principal: Cinegaglia, Naiara Costa [UNESP]
• Data de Publicação: 2013
• Outros Autores: Bersano, Paulo Ricardo Oliveira [UNESP], Araújo, Maria José Abigail Mendes [UNESP], Búfalo, Michelle Cristiane [UNESP], Sforcin, José Mauricio [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1155/2013/737386; http://hdl.handle.net/11449/75387
• topic: alcohol; antineoplastic agent; carboplatin; crystal violet; geopropolis; propolis; solvent; unclassified drug; animal cell; animal experiment; animal model; animal tissue; antineoplastic activity; bee; bone cancer; cancer cell; cancer cell culture; cell structure; cell viability; controlled study; dog disease; drug cytotoxicity; in vitro study; in vivo study; nonhuman; osteosarcoma; priority journal

Geopropolis is produced by indigenous stingless bees from the resinous material of plants, adding soil or clay. Its biological properties have not been investigated, such as propolis, and herein its cytotoxic action on canine osteosarcoma (OSA) cells was evaluated. OSA is a primary bone neoplasm diagnosed in dogs being an excellent model in vivo to study human OSA. spOS-2 primary cultures were isolated from the tumor of a dog with osteosarcoma and incubated with geopropolis, 70% ethanol (geopropolis solvent), and carboplatin after 6, 24, 48, and 72 hours. Cell viability was analyzed by the crystal violet method. Geopropolis was efficient against canine OSA cells in a dose- and time-dependent way, leading to a distinct morphology compared to control. Geopropolis cytotoxic action was exclusively due to its constituents since 70% ethanol (its solvent) had no effect on cell viability. Carboplatin had no effect on OSA cells. Geopropolis exerted a cytotoxic effect on canine osteosarcoma, and its introduction as a possible therapeutic agent in vivo could be investigated, providing a new contribution to OSA treatment. © 2013 Naiara Costa Cinegaglia et al.