ETHNOPHARMACOLOGICAL RELEVANCE: Antrodia cinnamomea is a popular medicinal mushroom in Taiwan that has been widely used for treatment of various cancers and liver diseases. AIM OF THE STUDY: This study aimed to investigate the immunomodulatory effect on angiogenesis of polysaccharides from mycelia of Antrodia cinnamomea (PMAC). MATERIALS AND METHODS: PMAC were extracted in boiling water, precipitated with 95% ethanol, and separated into four different molecular weights (<5, 5-30, 30-100, > 100 kDa). Tube formation and chorioallantoic membrane (CAM) assay were used to determine the in vitro and ex vivo anti-angiogenic effects. RESULTS: Only the PMAC-mononuclear cells (MNCs)-conditioned medium (CM) with MW > 100 kDa significantly and concentration-dependently decreased the secretion of vascular endothelial growth factor in human leukemia cells and inhibited the matrigel tube formation in human umbilical vein endothelial cells. Similarly only the PMAC-MNC-CM with MW > 100 kDa significantly and concentration-dependently increased the levels of interleukin (IL)-12 and interferon-gamma (IFN-gamma). In addition, the ex vivo CAM assay revealed that only the PMAC with MW>100 kDa significantly and dose-dependently inhibited neovascularization. CONCLUSIONS: PMAC with MW > 100 kDa are anti-angiogenic in vitro and ex vivo, and the effects are likely through immunomodulation.
ETHNOPHARMACOLOGICAL RELEVANCE: Antrodia cinnamomea is a popular medicinal mushroom in Taiwan that has been widely used for treatment of various cancers and liver diseases. AIM OF THE STUDY: This study aimed to investigate the immunomodulatory effect on angiogenesis of polysaccharides from mycelia of Antrodia cinnamomea (PMAC). MATERIALS AND METHODS:PMAC were extracted in boiling water, precipitated with 95% ethanol, and separated into four different molecular weights (<5, 5-30, 30-100, > 100 kDa). Tube formation and chorioallantoic membrane (CAM) assay were used to determine the in vitro and ex vivo anti-angiogenic effects. RESULTS: Only the PMAC-mononuclear cells (MNCs)-conditioned medium (CM) with MW > 100 kDa significantly and concentration-dependently decreased the secretion of vascular endothelial growth factor in humanleukemia cells and inhibited the matrigel tube formation in human umbilical vein endothelial cells. Similarly only the PMAC-MNC-CM with MW > 100 kDa significantly and concentration-dependently increased the levels of interleukin (IL)-12 and interferon-gamma (IFN-gamma). In addition, the ex vivo CAM assay revealed that only the PMAC with MW>100 kDa significantly and dose-dependently inhibited neovascularization. CONCLUSIONS:PMAC with MW > 100 kDa are anti-angiogenic in vitro and ex vivo, and the effects are likely through immunomodulation.
Authors: Yen-Ju Chen; Mike W C Thang; Yu-Tzu Chan; Yu-Feng Huang; Nianhan Ma; Alice L Yu; Chung-Yi Wu; Miao-Lin Hu; Kuo Ping Chiu Journal: PLoS One Date: 2013-12-17 Impact factor: 3.240