ophiobolin a/kanceri

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Incorporation of ophiobolin a into novel chemoembolization particles for cancer cell treatment.

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OBJECTIVE To design and synthesize chemoembolization particles for the delivery of Ophiobolin A (OphA), a promising fungal-derived chemotherapeutic, directly at the tumour location. To investigate cell death mechanism of OphA on a Rhabdomyosarcoma cancer (RD) cell line. Rhabdomyosarcoma is the most

Anticancer activity of Ophiobolin A, isolated from the endophytic fungus Bipolaris setariae.

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The present work describes the anticancer activity of Ophiobolin A isolated from the endophytic fungus Bipolaris setariae. Ophiobolin A was isolated using preparative HPLC and its structure was confirmed by HRMS, (1)H NMR, (13)C NMR, COSY, DEPT, HSQC and HMBC. It inhibited solid and haematological

Pharmacophore-Directed Retrosynthesis Applied to Ophiobolin A: Simplified Bicyclic Derivatives Displaying Anticancer Activity

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Pharmacophore-directed retrosynthesis applied to ophiobolin A led to bicyclic derivatives that were synthesized and display anticancer activity. Key features of the ultimate defensive synthetic strategy include a Michael addition/facially selective protonation sequence to set the critical C6

Fusicoccin-A selectively induces apoptosis in tumor cells after interferon-alpha priming.

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Active small molecules have a high potential for the development into new anti-cancer drugs. Here we analysed the effect of the natural occurring fusicoccanes, Fusicoccin-A (FC), Ophiobolin-A (OPH-A) and Ophiobolin-I (OPH-I) on various tumor cell lines. Both FC and OPH-A inhibit tumor cell growth

Ophiobolin A, a sesterterpenoid fungal phytotoxin, displays higher in vitro growth-inhibitory effects in mammalian than in plant cells and displays in vivo antitumor activity.

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Ophiobolin A, a sesterterpenoid produced by plant pathogenic fungi, was purified from the culture extract of Drechslera gigantea and tested for its growth-inhibitory activity in both plant and mammalian cells. Ophiobolin A induced cell death in Nicotiana tabacum L. cv. Bright Yellow 2 (TBY-2) cells

Fungal metabolite ophiobolin A as a promising anti-glioma agent: In vivo evaluation, structure-activity relationship and unique pyrrolylation of primary amines.

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Glioblastoma, the most common form of malignant primary brain tumor, is characterized by resistance to apoptosis, which is largely responsible for the low effectiveness of the classical chemotherapeutic approaches based on apoptosis induction in cancer cells. Previously, a fungal secondary

The anticancer natural product ophiobolin A induces cytotoxicity by covalent modification of phosphatidylethanolamine.

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Phenotypic screens allow the identification of small molecules with promising anticancer activity, but the difficulty in characterizing the mechanism of action of these compounds in human cells often undermines their value as drug leads. Here, we used a loss-of-function genetic screen in human

Paraptosis in the anti-cancer arsenal of natural products.

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Given the problems with malignant cancer cells showing innate and acquired resistance to apoptosis, we need alternative means to induce cell death in cancer. Paraptosis is a type of programmed cell death that is characterized by dilation of the endoplasmic reticulum (ER) and/or mitochondria.

Ophiobolin A induces paraptosis-like cell death in human glioblastoma cells by decreasing BKCa channel activity.

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Glioblastoma multiforme (GBM) is the most lethal and common malignant human brain tumor. The intrinsic resistance of highly invasive GBM cells to radiation- and chemotherapy-induced apoptosis accounts for the generally dismal treatment outcomes. This study investigated ophiobolin A (OP-A), a fungal

Chemistry and biology of ophiobolin A and its congeners.

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Ophiobolin A is a fungal secondary metabolite that was found to have significant activity against apoptosis-resistant glioblastoma cells through the induction of a non-apoptotic cell death, offering an innovative strategy to combat this aggressive cancer. The current article aims to make the bridge

Ophiobolin A Induces Autophagy and Activates the Mitochondrial Pathway of Apoptosis in Human Melanoma Cells.

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Ophiobolin A, a fungal toxin from Bipolaris species known to affect different cellular processes in plants, has recently been shown to have anti-cancer activity in mammalian cells. In the present study, we investigated the anti-proliferative effect of Ophiobolin A on human melanoma A375 and CHL-1

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