lanosterol/cáncer

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Second generation analogues of the cancer drug clinical candidate tipifarnib for anti-Chagas disease drug discovery.

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We previously reported that the cancer drug clinical candidate tipifarnib kills the causative agent of Chagas disease, Trypanosoma cruzi, by blocking ergosterol biosynthesis at the level of inhibition of lanosterol 14alpha-demethylase. Tipifarnib is an inhibitor of human protein farnesyltransferase.

Altered membrane rigidity via enhanced endogenous cholesterol synthesis drives cancer cell resistance to destruxins.

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Destruxins, secondary metabolites of entomopathogenic fungi, exert a wide variety of interesting characteristics ranging from antiviral to anticancer effects. Although their mode of action was evaluated previously, the molecular mechanisms of resistance development are unknown. Hence, we have

Structure determination of inonotsuoxides A and B and in vivo anti-tumor promoting activity of inotodiol from the sclerotia of Inonotus obliquus.

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Two new lanostane-type triterpenoids, inonotsuoxides A (1) and B (2) along with three known lanostane-type triterpenoids, inotodiol (3), trametenolic acid (4), and lanosterol (5), were isolated from the sclerotia of Inonotus obliquus (Pers.: Fr.) (Japanese name: Kabanoanakake) (Russian name: Chaga).

Chemopreventive effect of farnesol and lanosterol on colon carcinogenesis.

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Cholesterol metabolites play a several critical roles in regulating cell growth and function. 3-Hydroxy-3-methylglutaryl CoA (HMG-CoA) reductase, the rate-limiting enzyme for this pathway, is down regulated by feedback mechanisms due to increased levels of cholesterol and its premetabolites. Several

Anticancer activity of subfractions containing pure compounds of Chaga mushroom (Inonotus obliquus) extract in human cancer cells and in Balbc/c mice bearing Sarcoma-180 cells.

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The Chaga mushroom (Inonotus obliquus) has been used in folk medicine to treat cancers. However, limited information exists on the underlying anticancer effects of the major component of I. obliquusin vivo. We hypothesize that the pure compounds (3beta-hydroxy-lanosta-8,24-dien-21-al, inotodiol and

Target identification reveals lanosterol synthase as a vulnerability in glioma.

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Diffuse intrinsic pontine glioma (DIPG) remains an incurable childhood brain tumor for which novel therapeutic approaches are desperately needed. Previous studies have shown that the menin inhibitor MI-2 exhibits promising activity in preclinical DIPG and adult glioma models, although the mechanism

In vitro bioassay guided anti-dermatophyte and cytotoxic activities from Piper umbellatum L. Miq. led to 4-nerolidylcatechol.

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Dermatophytosis is a dermic disease caused by fungi. The aim of this study was to search anti-dermatophyte bioactive compounds in Piper umbellatum leaves. Cytotoxicity evaluation was performed against MRC-5 and HepG2 as a selectivity parameter. Crude ethanol extract presented MIC value of 39.1 μg/mL

Pharmacogenomics of Chemically Distinct Classes of Keap1-Nrf2 Activators Identify Common and Unique Gene, Protein, and Pathway Responses In Vivo.

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The Kelch-like erythroid-associated protein 1 (Keap1)-NF-E2-related factor 2 (Nrf2) signaling pathway is the subject of several clinical trials evaluating the effects of Nrf2 activation on the prevention of cancer and diabetes and the treatment of chronic kidney disease and multiple sclerosis.

Human carcinogenic risk assessment based on hormonal effects in a carcinogenicity study in rats with the antifungal agent, fluconazole.

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Fluconazole is an orally active bis-triazole antifungal agent that acts by selective inhibition of lanosterol 14 alpha-demethylase, a key enzyme for maintenance of the fungal cell wall. It is not genotoxic. In a 2 year carcinogenicity study in Sprague-Dawley rats, fluconazole decreased mammary

Ketoconazole inhibits cortisol secretion of an adrenal adenoma in vivo and in vitro.

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Ketoconazole (Nizoral), an oral broad spectrum antifungal agent, inhibits ergosterol synthesis in fungi and cholesterol synthesis in mammalian cells by inhibition of the 14-demethylation of lanosterol. After a blunted cortisol response to ACTH in normal men after ketoconazole has been shown by

Phytochemical characteristics and hypoglycaemic activity of fraction from mushroom Inonotus obliquus.

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BACKGROUND Inonotus obliquus is a medicinal mushroom that has been used as an effective agent to treat various diseases such as diabetes, tuberculosis and cancer. In order to elucidate the active fraction and its constituents, the effects of ethyl acetate fraction from I. obliquus (EAFI) on

Inhibition of human CYP19 by azoles used as antifungal agents and aromatase inhibitors, using a new LC-MS/MS method for the analysis of estradiol product formation.

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Azoles are used as fungicides in agriculture or antifungal drugs in medicine. Their therapeutic activity is based on the inhibition of fungal lanosterol-14alpha-demethylase (CYP51). Azoles are also used for the treatment of estrogen-dependent diseases, e.g. in breast cancer therapy. Inhibition of

In vitro antitumor activity and structure characterization of ethanol extracts from wild and cultivated Chaga medicinal mushroom, Inonotus obliquus (Pers.:Fr.) Pilát (Aphyllophoromycetideae).

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Inonotus obliquus (Pers.:Fr.) Pilát has been traditionally used as a folk remedy for treatment of cancers, cardiovascular disease and diabetes in Russia, Poland, and most of the Baltic countries, but natural reserves of this fungus have nearly been exhausted. This study was designed to investigate

Lanostanoids from fungi: a group of potential anticancer compounds.

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Lanostanes are a group of tetracyclic triterpenoids derived from lanosterol. They have relevant biological and pharmacological properties, such as their cytotoxic effects via induction of apoptosis. This review compiles the most relevant lanostanoids studied from 2000 to 2011, principally those

Effect of geraniol on fatty-acid and mevalonate metabolism in the human hepatoma cell line Hep G2.

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Monoterpenes have multiple pharmacological effects on the metabolism of mevalonate. Geraniol, a dietary monoterpene, has in vitro and in vivo anti-tumor activity against several cell lines. We have studied the effects of geraniol on growth, fatty-acid metabolism, and mevalonate metabolism in the

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