Ergosterol peroxide glucoside
Ergosterol peroxide exhibits anti-cancer, amoebicidal, anticomplementary, antibacterial, antiviral, anti-oxdiant, and anti-melanogenic activities. Ergosterol peroxide could as an anti-atherosclerosis agent, it exhibits hACAT-1 and Lp-PLA2 inhibitory effects, with inhibitory values of 51.6 +/- 0.9 and 51.7 +/- 1.2%, at a treatment concentration of 0.23 mM. Ergosterol peroxide has osteoclastogenesis inhibitory effect, it shows an inhibitory effect in a dose-dependent manner and an inhibition rate of up to 62% with low cytotoxicity, even at a concentration as low as 1.0 microg/mL.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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ACS Omega2020, 5,33,20825-20830
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Int. J. Med. Mushrooms, 2009, 11(3):249-57.
Ergosterol Peroxide and 9,11-Dehydroergosterol Peroxide from Ling Zhi or Reishi Medicinal Mushroom, Ganoderma lucidum (W. Curt.: Fr.) P. Karst. (Aphyllophoromycetideae) Mycelia Inhibit the Growth of Human Breast Adenocarcinoma MCF-7 Cells[Reference:
WebLink]
METHODS AND RESULTS:
Two fungal steroids, namely, ergosterol peroxide (EP) and (9,11-dehydroergosterol peroxide (9(11)-DHEP), were isolated and identified from the mycelia of Ling Zhi or Reishi medicinal mushroom, Ganoderma lucidum, grown under submerged culture. Both EP and 9(11)-DHEP exhibited inhibitory effects on human breast adenocarcinoma MCF-7 cells. The nontumorigenic human breast MCF-10-2A cells were less susceptible to these two compounds.
CONCLUSIONS:
Flow cytometric analyses suggested that these two fungal steroids inhibited the growth of MCF-7 cells by inducing cell apoptosis.
Arch Pharm Res. 2005 May;28(5):541-5.
Ergosterol peroxide from flowers of Erigeron annuus L. as an anti-atherosclerosis agent.[Pubmed:
15974439]
METHODS AND RESULTS:
Flowers of Erigeron annuus L. were extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH, and H2O. Repeated silica gel and ODS column chromatography of the EtOAc fraction led to the isolation of a sterol, through activity-guided fractionation, using ACAT inhibitory activity measurements. From the physico-chemical data, including NMR, MS, and IR, the chemical structure of the compound was determined to be an ergosterol peroxide (1), which has been isolated for the first time from this plant.
CONCLUSIONS:
This compound exhibited hACAT-1 and Lp-PLA2 inhibitory effects, with inhibitory values of 51.6 +/- 0.9 and 51.7 +/- 1.2%, at a treatment concentration of 0.23 mM.
Br J Pharmacol. 2007 Jan;150(2):209-19.
Ergosterol peroxide from an edible mushroom suppresses inflammatory responses in RAW264.7 macrophages and growth of HT29 colon adenocarcinoma cells.[Pubmed:
17160010]
5alpha,8alpha-Epidioxy-22E-ergosta-6, 22-dien-3beta-ol (ergosterol peroxide) is a major antitumour sterol produced by edible or medicinal mushrooms. However, its molecular mechanism of action has yet to be determined. Here, we examine the anticancer and anti-inflammatory effects of ergosterol peroxide.
METHODS AND RESULTS:
After treating RAW264.7 macrophages with LPS and purified ergosterol peroxide or ergosterol, we determined LPS-induced inflammatory cytokines, nuclear DNA binding activity of transcription factors and phosphorylation of MAP kinases (MAPKs). HT29 colorectal adenocarcinoma cells were treated with ergosterol peroxide for 5 days. To investigate the antitumour properties of ergosterol peroxide, we performed DNA microarray and RT-PCR analyses and determined the reactive oxygen species (ROS) in HT29 cells.
Ergosterol peroxide suppressed LPS-induced TNF-alpha secretion and IL-1alpha/beta expression in RAW264.7 cells. Ergosterol peroxide and ergosterol suppressed LPS-induced DNA binding activity of NF-kappaB and C/EBPbeta, and inhibited the phosphorylation of p38, JNK and ERK MAPKs. Ergosterol peroxide down-regulated the expression of low-density lipoprotein receptor (LDLR) regulated by C/EBP, and HMG-CoA reductase (HMGCR) in RAW264.7 cells. In addition, ergosterol peroxide showed cytostatic effects on HT29 cells and increased intracellular ROS. Furthermore, ergosterol peroxide induced the expression of oxidative stress-inducible genes, and the cyclin-dependent kinase inhibitor CDKN1A, and suppressed STAT1 and interferon-inducible genes.
CONCLUSIONS:
Our results suggest that ergosterol peroxide and ergosterol suppress LPS-induced inflammatory responses through inhibition of NF-kappaB and C/EBPbeta transcriptional activity, and phosphorylation of MAPKs. Moreover, ergosterol peroxide appears to suppress cell growth and STAT1 mediated inflammatory responses by altering the redox state in HT29 cells.
