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DOI QR Code

Inhibitory Effects of Phenolic Alkaloids of Menispermum Dauricum on Gastric Cancer in Vivo

  • Zhang, Hong-Feng (Department of Gastrointestinal Surgery, Harbin Medical University Cancer Hospital) ;
  • Wu, Di (Department of Gastrointestinal Surgery, Harbin Medical University Cancer Hospital) ;
  • Du, Jian-Kuo (Department of Gastrointestinal Surgery, Harbin Medical University Cancer Hospital) ;
  • Zhang, Yan (Department of Pharmacology, School Basic Medical Sciences of Heilongjiang University of Chinese Medicine) ;
  • Su, Yun-Ming (Department of Pharmacology, School Basic Medical Sciences of Heilongjiang University of Chinese Medicine)
  • Published : 2015.01.22

Abstract

The present study was conducted to investigate effects and mechanisms of action of phenolic alkaloids of Menispermum dauricum (PAMD) on gastric cancer in vivo. In vitro, cell apoptosis of human gastric cancer cell line SGC-7901 was observed using fluorescence staining. In vivo, a mice model was constructed to observe tumor growth with different doses. Cell apoptosis was examined using flow cytometry and K-RAS protein expression using Western blotting. The mRNA expression of P53, BCL-2, BAX, CASPASE-3, K-RAS was examined by real-time PCR. PAMD significantly suppressed tumor growth in the xenograft model of gastric cancer in a dose-dependent manner (p<0.01). Functionally, PAMD promoted cell apoptosis of the SGC-7901 cells and significantly increased the rate of cell apoptosis of gastric tumor cells (p<0.05). Mechanically, PAMD inhibited the expression of oncogenic K-RAS both at the mRNA and protein levels. In addition, PAMD affected the mRNA expression of the cell apoptosis-related genes (P53, BCL-2, BAX, CASPASE-3). PAMD could suppress gastric tumor growth in vivo, possibly through inhibiting oncogenic K-RAS, and induce cell apoptosis possibly by targeting the cell apoptosis-related genes of P53, BCL-2, BAX, CASPASE-3.

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