ophiorrhiza japonica/protirakovinné

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ČlánkyKlinické testyPatenty

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Co-overexpression of geraniol-10-hydroxylase and strictosidine synthase improves anti-cancer drug camptothecin accumulation in Ophiorrhiza pumila.

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Přihlášení Registrace

Camptothecin (CPT) belongs to a group of monoterpenoidindole alkaloids (TIAs) and its derivatives such as irinothecan and topothecan have been widely used worldwide for the treatment of cancer, giving rise to rapidly increasing market demands. Genes from Catharanthus roseus encoding strictosidine

Mutations in topoisomerase I as a self-resistance mechanism coevolved with the production of the anticancer alkaloid camptothecin in plants.

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Přihlášení Registrace

Plants produce a variety of toxic compounds, which are often used as anticancer drugs. The self-resistance mechanism to these toxic metabolites in the producing plants, however, remains unclear. The plant-derived anticancer alkaloid camptothecin (CPT) induces cell death by targeting DNA

Coupling deep transcriptome analysis with untargeted metabolic profiling in Ophiorrhiza pumila to further the understanding of the biosynthesis of the anti-cancer alkaloid camptothecin and anthraquinones.

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Přihlášení Registrace

The Rubiaceae species, Ophiorrhiza pumila, accumulates camptothecin, an anti-cancer alkaloid with a potent DNA topoisomerase I inhibitory activity, as well as anthraquinones that are derived from the combination of the isochorismate and hemiterpenoid pathways. The biosynthesis of these secondary

Asymmetric Total Synthesis and Evaluation of Antitumor Activity of Ophiorrhisine A and Its Derivatives.

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Přihlášení Registrace

The first asymmetric total synthesis of ophiorrhisine A (1), a new cyclic tetrapeptide isolated from Ophiorrhiza nutans, was accomplished via an intramolecular aromatic nucleophilic substitution reaction (IMSNAr) of a linear tripeptide to construct a 14-membered paracyclophane ring, resulting in

Antitumor activities of an anthraquinone fraction isolated from in vitro cultures of Ophiorrhiza rugosa var decumbens.

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Přihlášení Registrace

The biological effects of the anthraquinone fraction (AQf) isolated from in vitro cultures of Ophiorrhiza rugosa Wall. var decumbens (Rubiaceae) were evaluated. AQf showed differential activity on reactive oxygen species; it mediated the generation of superoxide radical and inhibited hydroxyl

Biosynthesis of camptothecin. In silico and in vivo tracer study from [1-13C]glucose.

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Přihlášení Registrace

Camptothecin derivatives are clinically used antitumor alkaloids that belong to monoterpenoid indole alkaloids. In this study, we investigated the biosynthetic pathway of camptothecin from [1-13C]glucose (Glc) by in silico and in vivo studies. The in silico study measured the incorporation of Glc

Camptothecin: therapeutic potential and biotechnology.

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Přihlášení Registrace

Camptothecin (CPT) and its derivatives have been received considerable attention recently. Two semi-synthetic derivatives, topotecan and irinotecan, are currently prescribed as anticancer drugs. Several more are now in clinical trial. CPT is produced in many plants belonging to unrelated orders of

Transcriptome-wide identification, characterization and phylogenomic analysis of cytochrome P450s from Nothapodytes nimmoniana reveal candidate genes involved in camptothecin biosynthetic pathway

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Přihlášení Registrace

The plant Nothapodytes nimmoniana is a source of important anticancer compound camptothecin (CPT) which is being used in the treatment of colorectal, lung and ovarian cancers. Camptothecin is biosynthesized by the combination of seco-iridoid and indole pathway in plants. Majority of the biosynthetic

Comparative studies on the camptothecin content from Nothapodytes foetida and Ophiorrhiza species.

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Přihlášení Registrace

Camptothecin is an anticancer quinoline alkaloid effective against colon cancer. It acts by inhibition of the enzyme DNA topoisomerase I. A comparative study of camptothecin from the indigenous plants namely Nothapodytes foetida, Ophiorrhiza mungos and Ophiorrhiza rugosa indicated highest yields of

Metabolite profiling of alkaloids and strictosidine synthase activity in camptothecin producing plants.

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Přihlášení Registrace

Camptothecin derivatives are clinically used anti-neoplastic alkaloids that biogenetically belong to monoterpenoid indole alkaloids. Camptothecin-related alkaloids from the methanol extracts of Ophiorrhiza pumila, Camptotheca acuminata and Nothapodytes foetida plants were profiled and identified

Suppression of camptothecin biosynthetic genes results in metabolic modification of secondary products in hairy roots of Ophiorrhiza pumila.

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Přihlášení Registrace

Camptothecin is a monoterpenoid indole alkaloid that exhibits anti-tumor activity. In Ophiorrhiza pumila, production of camptothecin and its related alkaloids was high in the hairy roots, but not in the cell suspension culture derived from hairy roots. To identify the intermediates in camptothecin

Multiple shoot cultures of Ophiorrhiza rugosa var. decumbens Deb and Mondal--a viable renewable source for the continuous production of bioactive Camptotheca alkaloids apart from stems of the parent plant of Nothapodytes foetida (Wight) Sleumer.

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Přihlášení Registrace

Camptotheca alkaloids were isolated from multiple shoot cultures of O. decumbens (0.056% dry weight) and stems of N. foetida. The cytotoxicity of the extracts and products were tested in a panel of five cell lines. Crude extract from O. decumbens (Cr-Od) and N. foetida (Cr-Nf) showed more potent

Micropropagation and production of Camptothecin from in vitro plants of Ophiorrhiza rugosa var. decumbens.

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Přihlášení Registrace

Camptothecin and its derivatives are used as anticancer alkaloids. At present, they are obtained by the extraction from the Chinese tree Camptotheca acuminata and the indigenous tree Nothapodytes foetida. Identification of alternate species of plants like Ophiorrhiza species and development of

Camptothecin biosynthetic genes in hairy roots of Ophiorrhiza pumila: cloning, characterization and differential expression in tissues and by stress compounds.

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Přihlášení Registrace

Camptothecin derivatives are clinically used anti-tumor compounds that biogenetically belong to a group of monoterpenoid indole alkaloids (TIA). We have already established a hairy root culture of Ophiorrhiza pumila (Rubiaceae) that produces camptothecin. The present study describes the cloning and

Effects of Concentration and Temperature of Nutrient Solution on Growth and Camptothecin Accumulation of Ophiorrhiza pumila

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Přihlášení Registrace

The medicinal plant, Ophiorrhiza pumila, naturally grows on the floors of humid inland forests in subtropical areas. It accumulates camptothecin (CPT), which is used as an anti-tumor agent, in all organs. We investigated the optimal hydroponic root-zone environments for growth and CPT

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