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Pagina 1 a partire dal 16 risultati
The combination of tephrosin with 2-deoxy-D-glucose enhances the cytotoxicity via accelerating ATP depletion and blunting autophagy in human cancer cells.
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2-Deoxy-D-glucose (2-DG), a synthetic glucose analog that acts as a glycolytic inhibitor, is currently under clinical evaluation for targeting tumor cells. Tephrosin (TSN), a plant rotenoid, is known as an anticancer agent. In this study, we describe that the addition of TSN to 2-DG enhanced the
Tephrosin induces internalization and degradation of EGFR and ErbB2 in HT-29 human colon cancer cells.
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Inactivation of epidermal growth factor receptor (EGFR) family members are prime targets for cancer therapy. Here, we show that tephrosin, a natural rotenoid which has potent antitumor activities, induced internalization of EGFR and ErbB2, and thereby induced degradation of the receptors. Treatment
Tephrosin-induced autophagic cell death in A549 non-small cell lung cancer cells.
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Anticancer effect of tephrosin (1) has been documented; however, the molecular mechanisms underlying the cytotoxicity of tephrosin in cancer cells remain unclear. In the present paper, the proliferation inhibition rate of several cancer cells was tested using the MTT assay; cell cycle, reactive
Pierreiones A-D, solid tumor selective pyranoisoflavones and other cytotoxic constituents from Antheroporum pierrei.
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Bioassay-guided fractionation of a solid tumor selective extract of the leaves and twigs of Antheroporum pierrei acquired from the U.S. National Cancer Institute extract repository afforded four new pyranoisoflavones, pierreiones A-D (1-4), together with rotenone (5), 12a-hydroxyrotenone (6), and
Studies on inhibitors of skin tumor promotion, XII. Rotenoids from Amorpha fruticosa.
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As a part of screening studies for chemopreventive agents (anti-tumor-promoters), six North American plants belonging to the Amorpha genus were tested using an in vitro assay system. Of these plants, Amorpha fruticosa exhibited strong inhibitory effects on Epstein-Barr virus early antigen (EBA-EA)
Stereocontrolled semi-syntheses of deguelin and tephrosin.
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We describe stereocontrolled semi-syntheses of deguelin and tephrosin, anti-cancer rotenoids isolated from Tephrosia vogelii. Firstly, we present a new two-step transformation of rotenone into rot-2'-enonic acid via a zinc-mediated ring opening of rotenone hydrobromide. Secondly, following
Enhancing the Therapeutic Efficacy of Daunorubicin and Mitoxantrone with Bavachinin, Candidone, and Tephrosin.
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The capability of flavonoids in sensitizing cancer cells was demonstrated in numerous works to chemotherapy and converse multidrug resistance by modulating efflux pumps and apoptosis mechanisms. Three flavonoids, namely, bavachinin, tephrosin, and candidone, have been recently introduced to cancer
Cytotoxic compounds from Mundulea chapelieri from the Madagascar Rainforest.
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Bioassay-guided fractionation of methanolic extracts of Mundulea chapelieri resulted in the isolation of two new flavonoids, isomundulinol (1) and 3-deoxy-MS-II (2), in addition to the eight known flavonoids 8-(3,3-dimethylallyl)-5,7-dimethoxyflavanone, MS-II, mundulinol, mundulone, munetone,
Phenolic constituents of Amorpha fruticosa that inhibit NF-kappaB activation and related gene expression.
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NF-kappaB is known to play a crucial role in the regulation of genes controlling the immune system, apoptosis, tumor cell growth, and tissue differentiation. Bioassay-guided fractionation of the n-hexane-soluble fraction of a methanol extract of Amorpha fruticosa afforded four new compounds, 5, 7,
Analysis of bioactive constituents from the leaves of Amorpha fruticosa L.
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Amorpha fruticosa L. is a Chinese folk medicine and rich in polyphenols. Fifteen known compounds were isolated and identified from the leaves of A. fruticosa L. They are tephrosin (1), 6a,12a-dehydrodeguelin (2), vitexin (3), afrormosin-7-O-β-d-glucopyranoside (4), 2″-O-α-l-rhamnopyranosyl
Cubé resin insecticide: identification and biological activity of 29 rotenoid constituents.
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Cubé resin, the root extract from Lonchocarpus utilis and urucu, is an important insecticide, acaricide, and piscicide. The four major active ingredients are rotenone, deguelin, rotenolone, and tephrosin, totaling 77 wt %. As a commercial pesticide, the minor constituents are also of chemical
A comprehensive review on ethnomedicine, phytochemistry, pharmacology, and toxicity of Tephrosia purpurea (L.) Pers.
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Tephrosia purpurea (L.) Pers. is a well-known plant in Ayurveda and named "Sarwa wranvishapaka" for its property to heal wounds. Traditionally, it is practiced for impotency, asthma, dyspepsia, hemorrhoids, syphilis gonorrhea, rheumatism, enlargement of kidney and spleen. It is an
Antitumor agents, 138. Rotenoids and isoflavones as cytotoxic constitutents from Amorpha fruticosa.
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Eight cytotoxic compounds have been isolated from the CHCl3 extract of Amorpha fruticosa. One compound, 6'-O-D-beta-glucopyranosyldalpanol [10], is a new cytotoxic rotenoid. Another known rotenoid, 12 alpha beta-hydroxyamorphigenin [6], was first shown to exhibit extremely potent cytotoxicity (ED50
Anticancer action of cubé insecticide: correlation for rotenoid constituents between inhibition of NADH:ubiquinone oxidoreductase and induced ornithine decarboxylase activities.
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Rotenone and rotenoid-containing botanicals, important insecticides and fish poisons, are reported to have anticancer activity in rats and mice. The toxic action of rotenone is attributed to inhibition of NADH:ubiquinone oxidoreductase activity and the purported cancer chemopreventive effect of
Isoflavones from the seedpods of Tephrosia vogelii and pyrazoisopongaflavone with anti-inflammatory effects
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Phytochemical investigation of Tephrosia vogelii seedpods led to the isolation of twelve compounds: vogelisoflavone A (1), vogelisoflavone B (2), isopongaflavone (3), onogenin, luteolin, 4',7-dihydroxy-3'-methoxyflavanone, trans-p-hydroxycinnamic acid, tephrosin, 2-methoxygliricidol,
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