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linum/antineoplàstic
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Pàgina 1 des de 41 resultats
Production of podophyllotoxin in Linum linearifolium in vitro cultures.
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For the first time, callus and suspension cultures of Linum linearifolium were initiated. Podophyllotoxin (PTOX), a strong antitumor precursor, was isolated from the calli and suspension, as a main lignan besides smaller amount of 6-methoxypodophyllotoxin (6MPTOX). L. linearifolium is now the third
Potential anticancer agents II: antitumor and cytotoxic lignans from Linum album (Linaceae).
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A phytochemical study of Linum album (Linaceae), guided by bioassay with the 9KB cell culture, resulted in the isolation of podophyllotoxin and a new lignan, 3'-demethylpodophyllotoxin; alpha-and beta-peltatins were identified by comparative TLC.
Optimization of podophyllotoxin extraction method from Linum album cell cultures.
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BACKGROUND
Suspension cultures of Linum album Kotschy ex Boiss. (Linaceae) accumulate podophyllotoxin (an anticancer agent) and could therefore serve as an alternative source of this important aryltetralin lactone lignan.
OBJECTIVE
The present work compared four podophyllotoxin extraction methods
Dirigent-mediated podophyllotoxin biosynthesis in Linum flavum and Podophyllum peltatum.
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Given the importance of the antitumor/antiviral lignans, podophyllotoxin and 5-methoxypodophyllotoxin, as biotechnological targets, their biosynthetic pathways were investigated in Podophyllum peltatum and Linum flavum. Entry into their pathways was established to occur via dirigent mediated
A review on Pharmacological and clinical aspects of Linum usitatissimum L.
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BACKGROUND
Linum usitatissimum L., known as common Flax or linseed, from the family Linnaceae, has long been cultivated in different nations due to its applications in medicine and industry. The present study aims to collect nearly all available information about chemical constituents of Flax, as
Cytotoxic activity of a podophyllotoxin-like lignan from Linum tauricum Willd.
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The present study describes the preliminary evaluation of the cytotoxic activity of a podophyllotoxin-like compound 4'-demethyl-6-methoxypodophyllotoxin (4'-DM-6-Mptox), isolated as one of the main lignans of Linum tauricum Willd. ssp. tauricum. The cytotoxic effects 4'-DM-6-Mptox were assessed by
Investigation of Linum flavum (L.) Hairy Root Cultures for the Production of Anticancer Aryltetralin Lignans.
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Linum flavum hairy root lines were established from hypocotyl pieces using Agrobacterium rhizogenes strains LBA 9402 and ATCC 15834. Both strains were effective for transformation but induction of hairy root phenotype was more stable with strain ATCC 15834. Whereas similar accumulation patterns were
Effect of aeration on production of anticancer lignans by cell suspension cultures of Linum album.
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The effects of aeration within the range of 0.2-0.5 vvm on transformed and high yielding cell cultures of Linum album were investigated in a 5-L stirred tank bioreactor equipped with low shear Setric impeller. The kinetics of cell growth, substrate utilization, and production of lignans, namely,
Linum narbonense: A new valuable tool for biotechnological production of a potent anticancer lignan Justicidine B.
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BACKGROUND
Arylnaphthalene lignan Justicidin B is a lead compound in the management of bone cancer and osteoclastogenesis. The compound is the main cytotoxic principle of rare medicinal plant Linum narbonense L. (Linaceae). However, there have been no reports on the bioreactor production of
Kinetics of glucosylated and non-glucosylated aryltetralin lignans in Linum hairy root cultures.
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Due to their pronounced cytotoxic activity, a number of aryltetralin lignans (ATLs), such as podophyllotoxin (PTOX), are used as antitumor compounds. The production of such molecules from entire plants or plant cell-tissue-organ cultures is thus of interest to the pharmaceutical industry. Hairy root
Root cultures of linum species section Syllinum as rich sources of 6-methoxypodophyllotoxin.
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Linum spp. from section Syllinum are promising for the production of aryltetralin lignans like podophyllotoxin (PTOX) and 6-methoxypodophyllotoxin (MPTOX). MPTOX is a PTOX congener that has cytotoxic activity comparable with PTOX. In this study root cultures of Linum Bungei from section Dasyllinum,
Induction of apoptosis in leukemia cell lines by Linum persicum and Euphorbia cheiradenia.
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OBJECTIVE
In the present study two medicinal herbs Linum persicum and Euphorbia cheiradenia that are native to Iran were tested for their possible anticancer effect and induction of apoptosis on human tumor cell lines including leukemia cell lines.
METHODS
The effect of methanolic extracts of the
Effects of phytoestrogen extracts from Linum usitatissimum on the Jeg3 human trophoblast tumour cell line.
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Phytoestrogens are a diverse group of nonsteroidal plant compounds which have similar effects to endogenous estrogens in humans and have been ascribed potential anticarcinogenic activities. We tested the effects of phytoestrogen extracts from different plant organs of flax, Linum
The effect of light on gene expression and podophyllotoxin biosynthesis in Linum album cell culture.
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Podophyllotoxin (PTOX) is a naturally occurring phenolic compound isolated as an active anti-tumor agent. The stimulatory influence of light on the formation of phenolic compounds has been reported, but the molecular mechanism underlying the effect of light on the expression of genes involved in
Lignans from linseed ( Linum usitatissimum L.) and its allied species: Retrospect, introspect and prospect
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Lignans are complex diphenolic compounds representing phytoestrogens and occur widely across the plant kingdom. Formed by the coupling of two coniferyl alcohol residues, lignans constitute major plant "specialized metabolites" with exceptional biological attributes that aid in plant defence and
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