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Strana 1 z 20 Výsledek
Farnesylpyridinium, an analog of isoprenoid farnesol, induces apoptosis but suppresses apoptotic body formation in human promyelocytic leukemia cells.
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Přihlášení Registrace
1-Farnesylpyridinium (FPy), an analog of isoprenoid farnesol, initially induced morphological changes similar to those of typical apoptosis in human leukemia HL-60 cells but FPy-treated cells were characterized by the absolute absence of final apoptotic events such as fragmentation into apoptotic
Human leukemia CEM C-1 cells possess a high affinity binding site for farnesol.
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Binding of 15-carbon isoprenoid farnesol in human acute leukemia CEM C-1 cells has been studied by addition of radio-labeled isoprenoid to cell growth medium. Significant time-dependent accumulation of the cell-associated radioactivity was detected at 37 degrees C. When experiments were carried out
Growth inhibition of leukemia cell line CEM-C1 by farnesol: effects of phosphatidylcholine and diacylglycerol.
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Acute leukemia cells of the established line CEM-C1 were treated during growth in serum-free medium with various concentrations of trans-trans farnesol. At concentrations ranging from 9.0 to 31.5 microM, farnesol inhibited growth of these cells without causing cell lysis. This effect was preceded by
Farnesol activates the intrinsic pathway of apoptosis and the ATF4-ATF3-CHOP cascade of ER stress in human T lymphoblastic leukemia Molt4 cells.
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In this study, we demonstrate that treatment of T lymphoblastic leukemic Molt4 cells with farnesol activates the apoptosome via the intrinsic pathway of apoptosis. This induction was associated with changes in the level of intracellular potassium and calcium, the dissipation of the mitochondrial and
Dehalogenation Activity of Selected Fungi Toward δ-Iodo-γ-Lactone Derived from trans,trans-Farnesol.
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Time-course of biotransformation of racemic trans-4-((E)-4',8'-dimethylnona-3',7'-dien-1-yl)-5-iodomethyl-4-methyldihydrofuran-2-one (1) in fungal and yeast cultures was investigated. In these conditions, the substrate 1 was enantioselectively dehalogenated yielding
Vitamin K2 and its derivatives induce apoptosis in leukemia cells and enhance the effect of all-trans retinoic acid.
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Geranylgeraniol, a polyprenylalcohol composing the side chain of vitamin K2 (VK2), was previously reported to be a potent inducer of apoptosis in tumor cell lines (Ohzumi H et al, J Biochem 1995; 117: 11-13). We examined the apoptosis-inducing ability of VK2 (menaquinone 3 (MK3), MK4 and MK5) and
Mechanism of farnesol cytotoxicity: further evidence for the role of PKC-dependent signal transduction in farnesol-induced apoptotic cell death.
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Mechanism of the inhibitory effect of isoprenoid farnesol on cell proliferation has been studied in human acute leukemia CEM-C1 cells. Farnesol (20 microM) reduced the rate of radioactive label incorporation into cellular diacylglycerol (DAG) and phosphocholine, the products of degradation of
Effects of farnesol on the thermotropic behavior of dimyristoylphosphatidylcholine.
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Differential scanning calorimetry (DSC) and DPH fluorescence anisotropy have been used to investigate the effects of trans-trans farnesol on the physical properties of model membranes and extracted cell lipids. Farnesol was shown to have a significant effect on the gel to liquid-crystal phase
Preferential induction of apoptosis of leukaemic cells by farnesol.
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Farnesol preferentially inhibits proliferation and induces apoptosis of tumour-derived but not non-transformed cell lines. We investigated whether farnesol induces apoptosis of blasts from patients with acute myeloid leukaemia (AML) and leukaemic cell lines, as compared with normal, human primary
Directed cell killing (apoptosis) in human lymphoblastoid cells incubated in the presence of farnesol: effect of phosphatidylcholine.
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Previously reported observations have shown that trans-trans farnesol inhibits incorporation of choline into phosphatidylcholine and reduces the growth rate of the human acute leukemia CEM-C1 cell line (Melnykovych, G., Haug, J.S. and Goldner, C.M. (1992) Biochem. Biophys. Res. Commun. 186,
Terpenic fraction of Pterodon pubescens inhibits nuclear factor kappa B and extracellular signal-regulated protein kinase 1/2 activation and deregulates gene expression in leukemia cells.
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BACKGROUND
Plant derived compounds have been shown to be important sources of several anti-cancer agents. As cell cycle deregulation and tumor growth are intimately linked, the discovery of new substances targeting events in this biochemical pathway would be of great value. The anti-leukemic effect
Farnesyl-O-acetylhydroquinone and geranyl-O-acetylhydroquinone suppress the proliferation of murine B16 melanoma cells, human prostate and colon adenocarcinoma cells, human lung carcinoma cells, and human leukemia cells.
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Farnesyl-O-acetylhydroquinone (IC(50)=2.5 microM/l) suppressed the proliferation of murine B16F10 melanoma cells with a potency much greater than those of farnesol (IC(50)=45 microM/l) and farnesyl anthranilate (IC(50)=46 microM/l), its alcohol, and ester counterparts with proven anti-tumor
Inhibition of the mevalonate pathway by simvastatin interferes with mast cell degranulation by disrupting the interaction between Rab27a and double C2 alpha proteins.
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Statins are well-known inhibitors of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, which block the mevalonate pathway. The activity of statins not only decreases cholesterol levels but also ameliorates inflammation and modulates the immune system. In this study, we investigated the
Selected Compounds Structurally Related to Acyclic Sesquiterpenoids and Their Antibacterial and Cytotoxic Activity.
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By implementing a common and industrially used method, 30 compounds which are structurally related to geranyl acetone, nerolidol, farnesal, farnesol and farnesyl acetate were obtained. Their antimicrobial activity against Staphylococcus aureus, Enterococcus faecalis, Enterococcus faecium,
Protein-linked isoprenoid lipids in dexamethasone-treated human lymphoid lines in culture.
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Accumulation of isoprenoids was studied in two cell lines derived from acute T-cell leukemia: CEM-C7 cells, whose growth is inhibited by the glucocorticoid dexamethasone, and CEM-C1 cells, which are resistant to this steroid. Isoprenoids were measured by growing the cells in serum-free medium in the
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