resorcinol/breast neoplasms

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Targeting multiple cannabinoid anti-tumour pathways with a resorcinol derivative leads to inhibition of advanced stages of breast cancer.

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OBJECTIVE The psychoactive cannabinoid Δ(9) -tetrahydrocannabinol (THC) and the non-psychoactive cannabinoid cannabidiol (CBD) can both reduce cancer progression, each through distinct anti-tumour pathways. Our goal was to discover a compound that could efficiently target both cannabinoid

Circulating gangliosides of breast-cancer patients.

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Gangliosides were isolated from the sera of recently diagnosed breast-cancer patients and from individuals who were apparently free of disease. Quantificative and qualitative analyses were carried out by 2-dimensional high-performance thin-layer chromatography and gas chromatography. The locations

Synthesis of novel chromeno-annulated cis-fused pyrano[3,4-c]benzopyran and naphtho pyran derivatives via domino aldol-type/hetero Diels-Alder reaction and their cytotoxicity evaluation.

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New chromeno-annulated cis-fused pyrano[3,4-c]benzopyran and naphtho pyran derivatives have been synthesized by domino aldol-type reaction/hetero Diels-Alder reaction generated from o-quinone methide in situ from 7-O-prenyl derivatives of 8-formyl-2,3-disubstituted chromenones with

Radanamycin, a macrocyclic chimera of radicicol and geldanamycin.

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Radicicol and geldanamycin are potent inhibitors of the Hsp90 protein folding machinery, which is an emerging target for the development of cancer chemotherapeutics. However, radicicol is inactive in vivo and geldanamycin suffers from its redox-active behavior that produces toxicity unrelated to

Plasma lipid-bound sialic acid and carcinoembryonic antigen in cancer patients.

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We evaluated lipid-bound sialic acid as a "marker" in cancer patients and assessed the individual and combined value of lipid-bound sialic acid and carcinoembryonic antigen determinations in these patients. Plasma was sampled from 62 normal subjects and 125 cancer patients. Lipid-bound sialic acid

Combined measurement and significance of lipid-bound sialic acid and carcinoembryonic antigen in detection of human cancer.

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We evaluated the clinical usefulness of lipid-bound sialic acid (LSA) as a "tumor marker" and assessed individual and carcinoembryonic antigen (CEA) in cancer patients. Serum LSA and CEA concentrations were measured by the resorcinol method after total lipid extraction and isolation of the

Evaluation of lipid-bound sialic acid (LSA) as a tumor marker.

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The objective of this study is the evaluation of serum levels of lipid-bound sialic acid (LSA) as a of marker cancer. This is a case-control study, and the levels of LSA were determined with blinded duplicates of cases and controls. Histologic verification of all cancer cases was used to confirm the

Synthesis and in vitro cytotoxic activity of novel chalcone-like agents.

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OBJECTIVE Chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. Therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues. METHODS The reaction of resorcinol

Comparative nuclease and anti-cancer properties of the naturally occurring malabaricones.

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The nuclease activities of the malabaricones have been studied so as to establish a structure-activity correlation and deduce the mechanistic pathway of the process. The inactivity of malabaricone A and malabaricone D revealed that the resorcinol moiety, present in the malabaricones did not

Drug design, synthesis and in vitro evaluation of substituted benzofurans as Hsp90 inhibitors.

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BACKGROUND Heat shock protein 90 is a molecular chaperone required for the stability and function of several client proteins that promote cancer cell growth and/or survival. Discovery of Hsp90 inhibitors has emerged as an attractive target of research in cancer therapeutics. Natural products like

Design, synthesis and pharmacological evaluation of N-(5-chloro-2,4-dihydroxybenzoyl)-(R)-N-arylmethyl-1,2,3,4-tetrahydro-3-isoquinolinecarboxamides as potent Hsp90 inhibitors.

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Using diverse arylmethyl groups to replace the benzyl moiety of the lead Hsp90 inhibitor 1 (N-(5-chloro-2,4-dihydroxybenzoyl)-(R)-N-benzyl-1,2,3,4-tetrahydro-3-iso quinolinecarboxamide), thirty four derivatives (10-43) were developed, and exhibited improved Hsp90 inhibitory and antiproliferative

Radester, a novel inhibitor of the Hsp90 protein folding machinery.

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[reaction: see text]. The antitumor antibiotics radicicol and geldanamycin are potent inhibitors of the Hsp90 protein folding machinery. Radester is a hybrid composed of radicicol's resorcinol ring and geldanamycin's quinone through an isopropyl ester. Radester was prepared, and the cytotoxicity of

Aminoglycoside-derived amphiphilic nanoparticles for molecular delivery.

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The development of effective drug carriers can lead to improved outcomes in a variety of disease conditions. Aminoglycosides have been used as antibacterial therapeutics, and are attractive as monomers for the development of polymeric materials in various applications. Here, we describe the

Structure-based design and synthesis of (5-arylamino-2H-pyrazol-3-yl)-biphenyl-2',4'-diols as novel and potent human CHK1 inhibitors.

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The cocrystal structure of a library hit was used to design a novel series of CHK1 inhibitors. The new series retained the critical hydrogen-bonding groups of the resorcinol moiety for binding but lacked the phenolic anilide moiety. The newly designed compounds exhibited similar enzymatic activity,

Development of non-electrophoretic assay method for DNA ligases and its application to screening of chemical inhibitors of DNA ligase I.

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A new rapid assay method for DNA ligases has been developed, which allows direct quantification of enzyme activity without using the traditional polyacrylamide gel electrophoretic technique. In this method, the 5'-biotinylated nicked duplex was used as a substrate for the ligase reaction, in which

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