7-Oxo-ganoderic acid Z2

[Anti-tumor target prediction and activity verification of Ganoderma lucidum triterpenoids].[Pubmed:28952258]

Zhongguo Zhong Yao Za Zhi. 2017 Feb;42(3):517-522.

It has reported that Ganoderma lucidum triterpenoids had anti-tumor activity. However, the anti-tumor target is still unclear. The present study was designed to investigate the anti-tumor activity of G. lucidum triterpenoids on different tumor cells, and predict their potential targets by virtual screening. In this experiment, molecular docking was used to simulate the interactions of 26 triterpenoids isolated from G. lucidum and 11 target proteins by LibDock module of Discovery Studio2016 software, then the anti-tumor targets of triterpenoids were predicted. In addition, the in vitro anti-tumor effects of triterpenoids were evaluated by MTT assay by determining the inhibition of proliferation in 5 tumor cell lines. The docking results showed that the poses were greater than five, and Libdock Scores higher than 100, which can be used to determine whether compounds were activity. Eight triterpenoids might have anti-tumor activity as a result of good docking, five of which had multiple targets. MTT experiments demonstrated that the ganoderic acid Y had a certain inhibitory activity on lung cancer cell H460, with IC(5)(0) of 22.4 mumol*L (-)(1), followed by 7-Oxo-ganoderic acid Z2, with IC(5)(0) of 43.1 mumol*L (-)(1). However, the other triterpenoids had no anti-tumor activity in the detected tumor cell lines. Taking together, molecular docking approach established here can be used for preliminary screening of anti-tumor activity of G.lucidum ingredients. Through this screening method, combined with the MTT assay, we can conclude that ganoderic acid Y had antitumor activity, especially anti-lung cancer, and 7-Oxo-ganoderic acid Z2 as well as ganoderon B, to a certain extent, had anti-tumor activity. These findings can provide basis for the development of anti-tumor drugs. However, the anti-tumor mechanisms need to be further studied.

[Triterpenoids from Ganoderma theaecolum].[Pubmed:28875673]

Zhongguo Zhong Yao Za Zhi. 2016 Mar;41(6):1075-1080.

Fifteenlanostane triterpenoids were isolated from the ethanol extract of Ganoderma theaecolum by means of preparative HPLC,column chromatography over silica gel,ODS and were identified as lucidone C(1),lucidone D(2),7-Oxo-ganoderic acid Z2(3),7-oxo-ganoderic acid Z(4),ganoderenicacid H(5),ganoderenic acid B(6),3beta,7beta-dihydroyl-11,15,23-trioxo-lanost-8,16-dien-26-oic acid(7),3beta,7beta-dihydroyl-11,15,23-trioxo-lanost-8,16-dien-26-oic acid methyl ester(8),ganolucidic acid B(9),ganolucidate F(10),methyl ganoderate C2(11),ganoderic acid zeta(12),ganoderic acid AP3(13),methyl ganoderate B(14),and ganoderol B(15). Compounds 1-15 were isolated from this specie for the first time.

Protective effects of triterpenoids from Ganoderma resinaceum on H(2)O(2)-induced toxicity in HepG2 cells.[Pubmed:23790868]

Food Chem. 2013 Nov 15;141(2):920-6.

Ganoderma resinaceum Boud. (Polyporeseae) has long been used for antioxidant, immunoregulation and liver protection. From the fruiting bodies of G. resinaceum, eight new lanostanoids, lucidones D-G (1-4), 7-Oxo-ganoderic acid Z2 (5), 7-oxo-ganoderic acid Z3 (6), ganoderesin A (7), and ganoderesin B (8), together with six known lanostanoids (9-14) were isolated. The structures of new compounds were elucidated through extensive spectroscopic analysis. In an in vitro model, ganoderesin B (8), ganoderol B (10) and lucidone A (11) showed inhibitory effects against the increase of ALT and AST levels in HepG2 cells induced by H2O2 compared to a control group in the range of their maximum non-toxic concentration (MNTC). However, compounds 8, 10 and 11 displayed no anti-oxidant activities by DPPH assay. Meanwhile, activation for PXR (Pregnane X Receptor) of ganoderesin B (8), ganoderol B (10) and lucidone A (11) was evaluated; ganoderol (10) exhibited a vital activation for PXR-induced CYP3A4 expression. These results suggested that GTs (Ganoderma triterpenoids) exhibited hepatoprotective activities by lowering ALT and AST levels.