ellipticine/kanser

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Topoisomerase II-mediated DNA cleavage activity induced by ellipticines on the human tumor cell line N417.

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Ellipticine derivatives have been shown to induce DNA strand breaks by trapping DNA-topoisomerase II (Topo II) in an intermediary covalent complex between Topo II and DNA which could be related to their cytotoxic effects. We report here that Celiptium and Detalliptinium, two ellipticine derivatives

The collective nuclear migration of p53 and phosphorylated S473 of Akt during ellipticine-mediated apoptosis in human lung epithelial cancer cells.

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Topoisomerase II inhibitor ellipticine effectively suppressed the growth of human non-small-cell-lung-cancer (NSCLC) epithelial cells. Previously, we reported the drug activity was consummated through parallel nucleus migration of p53 and Akt in A549 cells. While inducing cell death, the drug

Thermotropic phase behavior of DPPC liposome systems in the presence of the anti-cancer agent 'Ellipticine'.

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This letter presents our first results on the structural changes in DPPC multilamellar vesicles dispersed in water in the presence of the anti-cancer agent Ellipticine. The thermotropic phase transitions of the lamellar packing inside lipid vesicles were characterized in situ by small angle X ray

Ellipticine derivatives with an affinity to the estrogen receptor, an approach to develop intercalating drugs with a specific effect on the hormone-dependent breast cancer.

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In order to obtain breast tumor directed agents, we have prepared mixed compounds using estradiol or (E)-clomiphene as specific vectors of the breast tissue and a DNA intercalator from the ellipticine series as the cytotoxic agent. Among the newly synthesized ellipticine derivatives, only the

Cellular uptake as a determinant of cytotoxicity of quaternized ellipticines to human brain tumor cells.

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The quaternized ellipticine derivative, 9-methoxy-N2-methylellipticinium acetate (MMEA), is representative of a group of ellipticinium compounds found preferentially cytotoxic to human brain tumor cell lines comprising a subpanel of the U.S. National Cancer Institute (NCI)'s in vitro

Mining the National Cancer Institute Anticancer Drug Discovery Database: cluster analysis of ellipticine analogs with p53-inverse and central nervous system-selective patterns of activity.

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The United States National Cancer Institute conducts an anticancer drug discovery program in which approximately 10,000 compounds are screened every year in vitro against a panel of 60 human cancer cell lines from different organs. To date, approximately 62,000 compounds have been tested in the

Ellipticine-induced apoptosis depends on Akt translocation and signaling in lung epithelial cancer cells.

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Ellipticine and its analogues were reported as topoisomerase II inhibitors and promising antitumor agents. In this work, we showed that the growth of human non-small-cell-lung-cancer (NSCLC) epithelial cells A549 can be inhibited by ellipticine. The inhibitory effect was reverted by PI3K inhibitors.

Cytochrome P450- and peroxidase-mediated oxidation of anticancer alkaloid ellipticine dictates its anti-tumor efficiency.

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An antineoplastic alkaloid ellipticine is a prodrug, whose pharmacological efficiency is dependent on its cytochrome P450 (CYP)- and/or peroxidase-mediated activation in target tissues. The aim of this review was to summarize our knowledge on the molecular mechanisms of ellipticine action in the

Synthesis and evaluation of novel ellipticines as potential anti-cancer agents.

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Drugs that inhibit DNA topoisomerase I and DNA topoisomerase II have been widely used in cancer chemotherapy. We report herein the results of a focused medicinal chemistry effort around novel ellipticinium salts which target topoisomerase I and II enzymes with improved solubility. The salts were

Multi-responsive polymer micelles as ellipticine delivery carriers for cancer therapy.

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In the present study, we describe the synthesis and physicochemical properties of a novel pH- and thermoresponsive micellar drug delivery system for an anticancer ellipticinium derivative based on the triblock copolymer poly(ethylene

N-methylcarbamate derivatives of ellipticine and olivacine with cytotoxic activity against four human lung cancer cell lines.

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A series of analogues of the antitumor alkaloids ellipticine and olivacine were tested for cytotoxicity against four human lung cancer cell lines: H69, N417, H460, and H358. Adriamycin (doxorubicin), ellipticine, olivacine, and celiptinium were used as standards. Adriamycin was cytotoxic at 2 microM

Cytotoxicity of and DNA adduct formation by ellipticine in human U87MG glioblastoma cancer cells.

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OBJECTIVE Ellipticine is a potent antineoplastic agent exhibiting multiple mechanisms of action with promising brain tumor specificity. This anticancer agent should be considered a pro-drug, whose pharmacological efficiency and/or genotoxic side effects are dependent on its cytochrome P450 (CYP) -

Effects of ellipticine on ALDH1A1-expressing breast cancer stem cells--an in vitro and in silico study.

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Targeting breast cancer stem cells (BCSCs) offers a promising strategy for breast cancer treatment. We examined the plant alkaloid ellipticine for its efficacy to inhibit the expression of aldehyde dehydrogenase 1 class A1 (ALDH1A1)-positive BCSCs by in vitro and in silico methods. At 3 mM

[2 N methyl 9 hydroxy-ellipticine in treatment of metastatic breast cancers (author's transl)].

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A phase II trial was conducted in 57 patients with advanced metastatic breast cancer given 2-N-methyl 9-hydroxy-ellipticine (NMHE) as 100 mg/m2 weekly. Evaluation of response, after at least 4 injections, was possible in 46 patients. Two complete regressions (of 3 and 12 months) and 7 regressions of

Ellipticine induces apoptosis in human endometrial cancer cells: the potential involvement of reactive oxygen species and mitogen-activated protein kinases.

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Ellipticine, an alkaloid isolated from Apocyanaceae plants, has been shown to exhibit antitumor activity in several human malignant tissues including breast, thyroid, and ovarian cancers. The antitumor activity of ellipticine is thought to be primarily mediated by the induction of DNA damage through

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Herbal & Natural Medicine

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