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  • Title: Effects of Monascus-fermented rice extract on malignant cell-associated neovascularization and intravasation determined using the chicken embryo chorioallantoic membrane model.
    Author: Ho BY, Wu YM, Hsu YW, Hsu LC, Kuo YH, Chang KJ, Pan TM.
    Journal: Integr Cancer Ther; 2010 Jun; 9(2):204-12. PubMed ID: 20356949.
    Abstract:
    The traditional Chinese medicine, Hong-Qu, also called red mold rice in the United States and Europe, is used for treating blood stasis, a disorder related to hyperlipidemia and atherosclerosis. In addition to improving metabolic syndrome, extracts from Monascus-fermented rice inhibit the proliferation of various cancer cells in vitro and in vivo. The objective was to examine the effect of red mold rice ethanol extract (RMRE) on angiogenesis, invasion, and metastasis during tumor progression. RMRE significantly inhibited the proliferation of SW480 and SW620 human colorectal carcinoma cells in a dose- and time-dependent manner by using the MTT assay. A capillary-like network morphology was observed after the addition of 20 ng/mL vascular endothelial growth factor or SW620 culture-conditional medium, which was not seen after RMRE treatment. Moreover, spontaneous intravasation into Matrigel grafts of SW620 cells from the upper to the lower layers in the chick embryo chorioallantoic membrane (CAM) model was detected by the polymerase chain reaction (PCR) amplification of human Alu genomic DNA from the lower CAMs in the RMRE-untreated group. Neovascularization increased to 75.3% +/- 11.6% by SW620 cells onplant with Matrigel grafts in the CAM model. However, RMRE significantly reduced CAM neovascularization in a dose-dependent manner. Finally, RMRE effectively decreased the activity of matrix metalloproteinase (MMP)-7 as determined by reverse transcription PCR (RT-PCR), Western blotting, and casein zymography assays. In summary, Monascus-fermented products exert a potent effect on tumor growth and activation, suggesting that they may serve as supplementary agents in adjuvant cancer therapy.
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