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Stran 1 iz 40 rezultatov
A novel curcumin-like dienone induces apoptosis in triple-negative breast cancer cells.
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Prijava / prijava
OBJECTIVE
According to the World Health Organization (WHO), breast cancer is the most common cancer affecting women worldwide. In the USA ~12.3 % of all women are expected to be diagnosed with various types of breast cancer, exhibiting varying degrees of therapeutic response rates. Therefore, the
Oridonin ring A-based diverse constructions of enone functionality: identification of novel dienone analogues effective for highly aggressive breast cancer by inducing apoptosis.
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Prijava / prijava
Oridonin (1) has attracted considerable attention in recent years because of its unique and safe anticancer pharmacological profile. Nevertheless, it exhibits moderate to poor effects against highly aggressive cancers including triple-negative and drug-resistant breast cancer cells. Herein, we
Tumor-selective cytotoxicity of a novel pentadiene analogue on human leukemia/ lymphoma cells.
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BACKGROUND
A novel series of structurally divergent 1,5-diaryl-3-oxo-1,4-pentadiene analogues 1-10 displayed marked cytotoxic potencies towards a number of human leukemia/lymphoma cells.
OBJECTIVE
To identify novel selective cytotoxic compounds that induce apoptosis.
METHODS
The Differential Nuclear
Isolation, structure elucidation and total synthesis of a cytotoxic dienone from Echinacea pallida.
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The isolation and structure characterization of a dienone from the roots of Echinacea pallida, namely (8Z,11Z)-pentadeca-8,11-dien-2-one, are described here. To assess the configuration of this secondary metabolite, the stereoselective total synthesis of the two isomeric forms, (8Z,11Z)- and
Responses of tumorigenic and non-tumorigenic mouse lung epithelial cell lines to electrophilic metabolites of the tumor promoter butylated hydroxytoluene.
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Prijava / prijava
A model system to investigate the promotion phase of pulmonary carcinogenesis involves chronic exposure of carcinogen-initiated mice to the food additive, butylated hydroxytoluene (BHT). Previous studies strongly suggested that this activity is due to the cytochrome p450-catalyzed formation of
Antitumour properties of fluorinated benzothiazole-substituted hydroxycyclohexa-2,5-dienones ('quinols').
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The synthesis and in vitro antitumour evaluation of a new series of fluorinated benzothiazole-substituted 4-hydroxycyclohexa-2,5-dienones ('quinols') is described. The new compounds were found to be of comparable activity compared to the non-fluorinated precursor PMX 464, in terms of
Curcumin analog cytotoxicity against breast cancer cells: exploitation of a redox-dependent mechanism.
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Prijava / prijava
A series of novel curcumin analogs, symmetrical dienones, were previously shown to possess cytotoxic, anti-angiogenic and anti-tumor activities. Analogs 1 (EF24) and 2 (EF31) share the dienone scaffold and serve as Michael acceptors. We propose that the anti-cancer effects of 1 and 2 are mediated in
Potent prostaglandin A1 analogs that suppress tumor cell growth through induction of p21 and reduction of cyclin E.
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Although the cyclopentenone prostaglandin A1 (PGA1) is known to arrest the cell cycle at the G1 phase in vitro and to suppress tumor growth in vivo, its relatively weak activity limits its usefulness in cancer chemotherapy. In an attempt to develop antitumor drugs of greater potency and conspicuous
Solid-phase synthesis and biological activity of a combinatorial cross-conjugated dienone library.
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The solid-phase synthesis of a combinatorial cross-conjugated dienone library based on the structure of clavulones and their biological activity are reported. Clavulones are a family of marine prostanoids, and are composed of a cross-conjugated dienone system bearing two alkyl side-chains. The
Monocillin II inhibits human breast cancer growth partially by inhibiting MAPK pathways and CDK2 Thr160 phosphorylation.
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Twenty-two β-resorcylic acid lactones (RALs) were evaluated for cytotoxicity against human breast cancer cells to find their structure-activity relationship (SAR). Monocillin II, a trans-enone RAL without epoxy and conjugated dienone, was found to have higher activity in inhibiting tumor cell growth
Inhibitors and promoters of tubulin polymerization: synthesis and biological evaluation of chalcones and related dienones as potential anticancer agents.
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A series of dihalogenated chalcones and structurally related dienones were synthesized and evaluated for their antiproliferative activity in 10 different cancer cell lines and for their effect on microtubule assembly. All compounds showed cytotoxic activity, with IC(50) values in the 5-280 μM range
Cyclopentenone prostaglandins with dienone structure promote cross-linking of the chemoresistance-inducing enzyme glutathione transferase P1-1.
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Prijava / prijava
Glutathione transferase P1-1 (GSTP1-1) plays crucial roles in cancer chemoprevention and chemoresistance and is a key target for anticancer drug development. Oxidative stress or inhibitor-induced GSTP1-1 oligomerization leads to the activation of stress cascades and apoptosis in various tumor cells.
Design, synthesis, and biological evaluation of angiogenesis inhibitors: aromatic enone and dienone analogues of curcumin.
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Prijava / prijava
The quest to find new antitumor compounds is an ongoing research endeavor in many laboratories around the world. The use of small-molecule angiogenesis inhibitors promises to be a potentially effective method for cancer treatment and possible prevention. Many antiangiogenic compounds are in various
Recent advances in the chemistry and pharmacological activity of new steroidal antiandrogens and 5 alpha-reductase inhibitors.
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The object of this paper is to summarize for the past two years the most recent development in the field of prostate cancer and 5 alpha-reductase inhibitors. In addition we are also including some results on the synthesis and pharmacological evaluation of new steroidal compounds developed in our
Exploration of the Electrophilic Reactivity of the Cytotoxic Marine Alkaloid Discorhabdin C and Subsequent Discovery of a New Dimeric C-1/N-13-Linked Discorhabdin Natural Product
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Prijava / prijava
The cytotoxic marine natural product discorhabdin C contains a 2,6-dibromo-cyclohexa-2,5-diene moiety, previously proposed to be a critical feature required for biological activity. We have determined that the dienone-ring of discorhabdin C is indeed electrophilic, reacting with thiol and amine
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