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Abstract Title:

Inhibition of tumor growth and angiogenesis by water extract of Gac fruit (Momordica cochinchinensis Spreng).

Abstract Source:

Int J Oncol. 2005 Apr;26(4):881-9. PMID: 15753981

Abstract Author(s):

Pham Gia Tien, Fujio Kayama, Fumio Konishi, Hiroyuki Tamemoto, Keizo Kasono, Nguyen Thi Kim Hung, Masatoshi Kuroki, San-E Ishikawa, Chuyen Nguyen Van, Masanobu Kawakami

Article Affiliation:

Department of Integrated Medicine 1, Jichi Medical School, Omiya Medical Center, 1-847 Amanuma-cho, Saitama 330-8503, Japan.

Abstract:

The antitumor activity of the crude water extract from Gac fruit (Momordica cochinchinensis) was investigated in vivo and in vitro. A water extract prepared from 0.75 and 0.25 mg dry weight of Gac fruit per gram body weight was given daily to Balb/c mice (n=15/group). The water extract inhibited the growth of the colon 26-20 adenocarcinoma cell line, transplanted in Balb/c mice, reducing wet tumor weight by 23.6%. Histological and immunohistochemical results indicated that Gac water extract reduced the density of blood vessels around the carcinoma. The water extract also produced a marked suppression of cell proliferation in colon 26-20 and HepG2 cells. Cell cycle analysis demonstrated a significant accumulation of cells in the S phase by water extract. Immunoblotting showed that cyclin A, Cdk2, p27waf1/Kip1 were down-regulated, whereas the protein level of p21waf1/Cip1 was not decreased. Treatment of colon 26-20 cells with Gac extract induced necrosis rather than apoptosis. The antitumor component was confirmed as a protein with molecular weight of 35 kDa, retained in the water-soluble high molecular weight fraction. Thus, the bioactive antitumor compound in Gac extract is a protein, which is distinct from lycopene, another compound in Gac fruit with potential antitumor activity.

Study Type : Animal Study

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Sayer Ji
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