Tumor-growth inhibitory activity of the terpene compound isolated from Buna-shimeji [Hypsizigus marmoreus] mushroom

• Published in: Nihon Shokuhin Kagaku Kōgaku kaishi Vol. 53; no. 1
• Main Authors: Mizutani, S.(Takara Bio Inc., Otsu (Japan)), Kawai, T, Enoki, T, Sagawa, H, Shimanaka, K, Sakai, T, Kato, I
• Format: Journal Article
• Language: Japanese
• Published: 01.01.2006
• Subjects: CARCINOMA; CARCINOME; CHAMPIGNON COMESTIBLE; EDIBLE FUNGI; INHIBICION; INHIBITION; ONCOGENICIDAD; ONCOGENICITE; ONCOGENICITY; SETAS COMESTIBLES; TERPENOIDE; TERPENOIDOS; TERPENOIDS
• ISSN: 1341-027X
• DOI: 10.3136/nskkk.53.55

We have observed that dose-dependent tumor-growth inhibitory activity of Buna-shimeji mushroom, Hypsizigus marmoreus, against murine Sarcoma-180 (S-180) was observed by the administration of 5% and 10% powdered fruiting body-mixed feed (dose of fruiting body, ca. 16mg/kg/day). Moreover, we have found that ethyl acetate-extract from the powdered fruiting body also exhibited tumor-growth inhibitory activity. Approximately 3g of the active substance (acetone-eluting fraction) was obtained from 250g of powdered fruiting body by the silica gel fractionation. Following the administration of the acetone fraction (ca. 250mg/kg/day), equivalent to the dose present in 10% powdered fruiting body-mixed feed, the tumor volume of solid S-180 was 41.5% compared to that of control mice that were fed only CE-2. The acetone fraction also exhibited similar inhibitory activity against syngeneic IMC carcinoma. The main active substance of the acetone fraction was subsequently identified as the tandem-type polyterpene (C45H86O7) by NMR and MS analysis. In addition to the murine tumor cells, S-180 and IMC, we have found that this terpene fraction exhibits cytotoxicity against various human tumor cells. U937, MKN45 and HL-60. Moreover, the purified active substance (C45H86O7) was observed to induce apoptosis in HL-60 cells, and it was suggested that this activity might also exhibit the tumor-growth inhibitory activity.