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High frequency of p 16 promoter methylation in non-small cell lung carcinomas from Chile Biol. Res.
GUZMAN,LEDA M; KORIYAMA,CHIHAYA; AKIBA,SUMINORI; EIZURU,YOSHITO; CASTILLO,DARWINS; CORVALAN,ALEJANDRO; AGUAYO,FRANCISCO R.
The inactivation of tumour suppressor genes by aberrant methylation of promoter regions has been described as a frequent event in neoplasia development, including lung cancer. The p16 gene is a tumour suppressor gene involved in the regulation of cell cycle progression that has been reported to be inactivated by promoter methylation in lung carcinomas at variable frequencies around the world in a smoking habit dependent manner. The purpose of this study was to investigate the methylation status of the promoter region of the p16 gene in 74 non-small cell lung carcinomas from Chile. The frequency of p16 gene inactivation by promoter methylation was determined as 79.7% (59/74). When we considered histological type, we observed that p16 promoter methylation...
Tipo: Journal article Palavras-chave: Lung carcinoma; Methylation; Promoter region.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000400011
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Identification of a pore-forming protein from sea anemone Anthopleura dowii Verrill (1869) venom by mass spectrometry J. Venom. Anim. Toxins incl. Trop. Dis.
Ramírez-Carreto,Santos; Pérez-García,Erick I.; Salazar-García,Sandra I.; Bernáldez-Sarabia,Johanna; Licea-Navarro,Alexei; Rudiño-Piñera,Enrique; Pérez-Martínez,Leonor; Pedraza-Alva,Gustavo; Rodríguez-Almazán,Claudia.
Abstract Background: Pore-forming proteins (PFP) are a class of toxins abundant in the venom of sea anemones. Owing to their ability to recognize and permeabilize cell membranes, pore-forming proteins have medical potential in cancer therapy or as biosensors. In the present study, we showed the partial purification and sequencing of a pore-forming protein from Anthopleura dowii Verrill (1869). 17. Methods: Cytolytic activity of A. dowii Verrill (1869) venom was determined via hemolysis assay in the erythrocytes of four mammals (sheep, goat, human and rabbit). The cytotoxic activity was analyzed in the human adherent lung carcinoma epithelial cells (A549) by the cytosolic lactate dehydrogenase (LDH) assay, and trypan blue staining. The venom was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthopleura; Pore-forming protein; Venom; Lung carcinoma; Sea anemone.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992019000100301
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