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The Pharmaceutical Society of Korea (대한약학회)
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Chemopreventive Effect of Protein Extract of Asterina pectinifera in HT-29 Human Colon Adenocarcinoma Cells

  • Shon Yun-Hee (Department of Pharmacology, College of Medicine and Intractable Disease Research Center, Dongguk University) ;
  • Nam Kyung-Soo (Department of Pharmacology, College of Medicine and Intractable Disease Research Center, Dongguk University)
  • Published : 2006.03.01
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Abstract

We investigated the effect of protein extract of Asterina pectinifera on the activity of 4 enzymes that may playa role in adenocarcinoma of the colon: quinone reductase (QR), glutathione Stransferase (GST), ornithine decarboxylase (ODC), and cyclooxygenase (COX)-2. QR and GST activity increased in HT-29 human colon adenocarcinoma cells increased that had been exposed to 4 concentrations of the protein extract (80, 160, 200, and $240{\mu}g/mL$). Additionally, 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ODC activity decreased significantly in cells exposed to the extract in concentrations of $160{\mu}g/mL$ (p<0.05), $200{\mu}g/mL$ (p<0.005), and $240{\mu}g/mL$ (p<0.005). TPA-induced COX-2 activity also decreased in cells exposed to extract concentrations of 10, 20, 40, and $60{\mu}g/mL$. COX-2 expression was also inhibited in cells exposed to this extract. These results suggest that this protein extract of A pectinifera has chemopreventive activity in HT-29 human colon adenocarcinoma cells, and therefore, may have the potential to function as a chemopreventive agent in human colorectal cancer.

Keywords

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