quinoline/cancer mamar

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Synthesis of new cis-fused tetrahydrochromeno[4,3-b]quinolines and their antiproliferative activity studies against MDA-MB-231 and MCF-7 breast cancer cell lines.

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New cis-fused tetrahydrochromeno[4,3-b]quinolines have been synthesized by intramolecular [4+2] imino-Diels-Alder reactions of 2-azadienes derived in situ from aromatic amines and 7-O-prenyl derivatives of 8-formyl-2,3-disubstituted chromenones in the presence of 20mol% Yb(OTf)(3) in acetonitrile

A novel quinoline molecular probe and the derived functionalized gold nanoparticles: sensing properties and cytotoxicity studies in MCF-7 human breast cancer cells.

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A highly selective quinoline-based fluorescent sensor L was designed, prepared and used to monitor zinc ions in Goldfish (Carassius auratus) as model of vertebrate organism. Modified gold nanoparticles having functional quinoline molecules (GNPs@L) were also synthesized and their sensing properties

Synthesis of 1H-1,2,3-Triazole-Linked Quinoline-Isatin Molecular Hybrids as Anti-Breast Cancer and Anti-Methicillin-Resistant Staphylococcus aureus (MRSA) Agents

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Background: The persistence of breast cancer as the leading cause of mortality among women, coupled with drug resistance to tamoxifen, the standard endocrine therapy for the disease, exacts fixated attention. To this effect, molecular

PQ1, a quinoline derivative, induces apoptosis in T47D breast cancer cells through activation of caspase-8 and caspase-9.

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Apoptosis, a programmed cell death, is an important control mechanism of cell homeostasis. Deficiency in apoptosis is one of the key features of cancer cells, allowing cells to escape from death. Activation of apoptotic signaling pathway has been a target of anti-cancer drugs in an induction of

Anti-breast cancer agents, quinolines, targeting gap junction.

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Cancer cells exhibit many defects in cell communication that contribute to the loss of tissue homeostasis (excess cell proliferation, invasion, and metastasis). The process of cancer formation causes a disruption in cell homeostasis, affecting the ability to respond to extracellular signals, as well

Second-generation substituted quinolines as anticancer drugs for breast cancer.

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Cancer cells have reduced capacity for gap junctional inter-cellular communication (GJIC). One feasible approach to reduce growth of cancer cells is to enhance GJIC. This report shows that a second-generation substituted quinoline, PQ7, has anti-tumor effect. Scrape load/dye transfer and colony

Anti-breast cancer activity of some novel quinoline derivatives.

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To discover new bioactive lead compounds for medicinal purposes, 2-cyano-3-(4-substituted)-N-(quinolin-3-yl) acrylamide derivatives 2-24, chromenes 25, 26 and benzochromenes 27, 28 were synthesized. The structures of the newly synthesized compounds were confirmed by elemental analyses, IR, 1H NMR

Synthesis and anti-breast cancer activities of substituted quinolines.

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Promising anti-breast cancer agents derived from substituted quinolines were discovered. The quinolines were readily synthesized in a large scale from a sequence of reactions starting from 4-acetamidoanisole. The Michael addition product was isolated as the reaction intermediate in the ring closing

Quinoline‑ and Benzoselenazole-Derived Unsymmetrical Squaraine Cyanine Dyes: Design, Synthesis, Photophysicochemical Features and Light-Triggerable Antiproliferative Effects against Breast Cancer Cell Lines

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Photodynamic therapy is an innovative treatment approach broadly directed towards oncological diseases. Its applicability and efficiency are closely related to the interaction of three main components, namely a photosensitizer, light and molecular triplet oxygen, which should drive cell death.

Differentiation-inducing quinolines as experimental breast cancer agents in the MCF-7 human breast cancer cell model.

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The purpose of this work is to develop agents for cancer differentiation therapy. We showed that five antiproliferative quinoline compounds in the National Cancer Institute database stimulated cell differentiation at growth inhibitory concentrations (3-14 microM) in MCF-7 human breast tumor cells in

Design, Synthesis and Biological Evaluation of4-(Imidazolylmethyl)-2-(4-methylsulfonyl phenyl)-Quinoline Derivatives as Selective COX-2 Inhibitors and In-vitro Anti-breast Cancer Agents.

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A new group of 4-(Imidazolylmethyl)quinoline derivatives possessing a methylsulfonyl COX-2 pharmacophore at the para position of the C-2 phenyl ring were designed and synthesized as selective COX-2 inhibitors and in-vitroanti breast cancer agents. In-vitro COX-1 and COX-2 inhibition studies showed

Synthesis and in vivo evaluation of the putative breast cancer resistance protein inhibitor [11C]methyl 4-((4-(2-(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-2-yl)ethyl)phenyl)amino-carbonyl)-2-(quinoline-2-carbonylamino)benzoate.

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BACKGROUND The multidrug efflux transporter breast cancer resistance protein (BCRP) is highly expressed in the blood-brain barrier (BBB), where it limits brain entry of a broad range of endogenous and exogenous substrates. Methyl is a recently discovered BCRP-selective inhibitor, which is

Design and synthesis of 4-piperazinyl quinoline derived urea/thioureas for anti-breast cancer activity by a hybrid pharmacophore approach.

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In an attempt to improve anti-breast cancer activity, a new series of 4-piperazinylquinoline derivatives based on the urea/thiourea scaffold were designed and synthesised by a pharmacophore hybrid approach. We then examined for their antiproliferative effects on three human breast tumor cell lines,

Synthesis and Biological Evaluation of 4-Anilino-quinazolines and -quinolines as Inhibitors of Breast Cancer Resistance Protein (ABCG2).

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Chemotherapeutic treatment of cancer often fails due to overexpression of the ATP-binding cassette (ABC) transport proteins, like ABCG2, triggering active efflux of various structurally unrelated drugs. This so-called multidrug resistance (MDR) may be reversed by selective, potent, and nontoxic

HHQ-4, a quinoline derivate, preferentially inhibits proliferation of glucose-deprived breast cancer cells as a GRP78 down-regulator.

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As a central regulator for endoplasmic reticulum (ER) stress, glucose-regulated protein 78 (GRP78), controls the activation of ER-transmembrane signaling mechanisms by inducing unfolded protein response (UPR) in response to ER stress. Although limited glucose availability often occurs in poorly

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