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gibberellin/cancro
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Synthesis of gibberellin derivatives with anti-tumor bioactivities.
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A series of gibberellin based molecules were designed and synthesized. Gibberellin derivatives bearing two alpha,beta-unsaturated ketone units showed strong anticancer activities in MTT assay towards a number of human cancer cell lines including HT29, A549, HepG2 and MKN28. The most potent
Gibberellin derivative GA-13315 sensitizes multidrug-resistant cancer cells by antagonizing ABCB1 while agonizes ABCC1.
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GA-13315 is a gibberellin derivative that reveals antitumor and antineoplastic effects both in vitro and in vivo. In the present study, the chemosensitizing effects of GA-13315 in multidrug-resistant cell lines were examined and the underlying mechanisms were investigated.
Cytotoxicity and
Anti-tumor effects and mechanism of GA-13315, a novel gibberellin derivative, in human lung adenocarcinoma: an in vitro and in vivo study.
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Identification and characterization of a gibberellin-regulated protein, which is ASR5, in the basal region of rice leaf sheaths.
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Gibberellins (GAs) regulate growth and development in higher plants. To identify GA-regulated proteins during rice leaf sheath elongation, a proteomic approach was used. Proteins from the basal region of leaf sheath in rice seedling treated with GA(3) were analyzed by fluorescence two-dimensional
Effect of gibberellic Acid on crown gall tumor induction in aging primary pinto bean leaves.
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Gibberellic acid was tested for its effect on tumor induction by Agrobacterium tumefaciens in primary pinto bean (Phaseolus vulgaris) leaves in various stages of development. The hormone was found to promote tumor induction in partially aged leaves but did not effect tumor induction in very young
Bioassay and attributes of a growth factor associated with crown gall tumors.
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An improved bioassay is described for a factor that promotes tumor growth which was first obtained from extracts of pinto bean leaves with crown gall tumors. Sixteen primary pinto bean leaves per sample are inoculated with sufficient Agrobacterium tumefaciens to initiate about 5 to 10 tumors per
The gibberellin 13-oxidase that specifically converts gibberellin A9 to A20 in Tripterygium wilfordii is a 2-oxoglutarate-dependent dioxygenase.
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A novel GA13-oxidase ofTripterygium wilfordii, TwGA13ox, is a 2-oxoglutarate-dependent dioxygenase. It specifically catalyzes the conversion of GA9to GA20, but not GA4to GA1. Gibberellins (GAs) play essential roles in plant growth and development. Previous
Antitumor and antiangiogenic effects of GA-13315, a gibberellin derivative.
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This study showed that 13-chlorine-3,15-dioxy-gibberellic acid methyl ester (GA-13315), a gibberellin derivative, possessed high antitumor and antiangiogenic activity in vitro and in vivo. Cytotoxicity assays showed that GA-13315 was a potential and efficient antitumor compound, with inhibitory
TRIM67 promotes NF‑κB pathway and cell apoptosis in GA‑13315‑treated lung cancer cells.
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13‑Chlorine‑3,15‑dioxy‑gibberellic acid methyl ester (GA‑13315), a gibberellin derivative, possesses strong anti‑tumor activity in vitro and in vivo. The present study aimed to investigate the underlying mechanisms of GA‑13315‑induced apoptosis in human non‑small cell lung cancer cell lines. Lung
Maize host requirements for Ustilago maydis tumor induction.
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The biotrophic pathogen Ustilago maydis causes tumors by redirecting vegetative and floral development in maize (Zea mays L.). After fungal injection into immature tassels, tumors were found in all floral organs, with a progression of organ susceptibility that mirrors the sequential location of foci
Expression characteristics and function of CAS and a new beta-amyrin synthase in triterpenoid synthesis in birch (Betula platyphylla Suk.).
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Triterpenoids produced by the secondary metabolism of Betula platyphylla Suk. exhibit important pharmacological activities, such as tumor inhibition, anti-HIV, and defense against pathogens, but the yield of natural synthesis is low, which is insufficient to meet people's needs. In this study, we
Transcription Factor OpWRKY3 Is Involved in the Development and Biosynthesis of Camptothecin and Its Precursors in Ophiorrhiza pumila Hairy Roots.
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The plant Ophiorrhiza pumila produces camptothecin (CPT), a kind of terpene indole alkaloid (TIAs) that has been widely used in treatment of cancer. Tryptophan-arginine-lysine-tyrosine (WRKY) transcription factors have been reported to play important roles in plant metabolism and development.
Diterpene synthases facilitating production of the kaurane skeleton of eriocalyxin B in the medicinal plant Isodon eriocalyx.
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The Isodon plants (Lamiaceae) have been used in traditional Chinese medicine to alleviate sufferings from inflammations and cancers. This feature has been attributed to the presence of pharmacologically active ent-kaurane diterpenoids such as eriocalyxin B and oridonin. The Isodon eriocalyx (Dunn)
Inhibition of the nuclear factor kappa B (NF-kappa B) pathway by tetracyclic kaurene diterpenes in macrophages. Specific effects on NF-kappa B-inducing kinase activity and on the coordinate activation of ERK and p38 MAPK.
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The anti-inflammatory action of most terpenes has been explained in terms of the inhibition of nuclear factor kappaB (NF-kappaB) activity. Ent-kaurene diterpenes are intermediates of the synthesis of gibberellins and inhibit the expression of NO synthase-2 and the release of tumor necrosis
Morphogenic responses of debudded tobacco plants to gibberellic Acid and indole-3-acetic Acid.
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Stem applications of indole-3-acetic acid (IAA) or gibberellic acid (GA) did not prevent or alter tumor or teratoma formation in debudded tobacco plants (Nicotiana tabacum L., var. One Sucker). The materials produced intense (in case of GA) and moderate (in case of IAA) stem proliferations when
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