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l canavanine/rak
Veza se sprema u međuspremnik
Stranica 1 iz 22 rezultatima
L-Canavanine as a radiosensitization agent for human pancreatic cancer cells.
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This study evaluated the in vitro effect of L-canavanine on cell cycle progression in the two human pancreatic cancer cells lines PANC-1 and MIA PaCa-2. After 72 h of exposure to L-canavanine, the percentage of cells in the radiosensitive G2/M phase of the cell cycle increased 6-fold in PANC-1 cells
Growth inhibitory effect of L-canavanine against MIA PaCa-2 pancreatic cancer cells is not due to conversion to its toxic metabolite canaline.
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L-Canavanine (CAV) is an arginine (ARG) analog isolated from the jack bean, Canavalia ensiformis. CAV becomes incorporated into cellular proteins of MIA PaCa-2 human pancreatic cancer cells and the aberrant, canavanyl proteins are not preferentially degraded. Hydrolytic cleavage of CAV to canaline
Enhancement of human tumor cell killing by L-canavanine in combination with gamma-radiation.
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On the basis of several physiological properties of L-canavanine, we have tested the prediction that this analogue of arginine would enhance the cytotoxic effects of gamma-rays in mammalian cells. Using the human colonic tumor cell line, HT-29, time-dose studies were performed with log-phase
Reappraisal of L-canavanine as an anti-tumour agent.
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L-canavanine, an analogue of L-arginine, is known to have a toxic effect on pathogens. In experiments performed on a specialised epithelial-like cell system which is conditionally transformable, L-canavanine appeared to exhibit (1) a reversible 'static' effect on exponentially growing cells at
L-Canavanine modulates cellular growth, chemosensitivity and P-glycoprotein substrate accumulation in cultured human tumor cell lines.
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L-Canavanine (L-CAV) is a naturally occurring L-arginine analog that induces the formation of non-functional proteins in a variety of organisms. Previous studies have shown that L-CAV is cytotoxic for several human tumor cell lines. In this study, we have evaluated the cytotoxicity of L-CAV for both
Inhibition of the growth of human pancreatic cancer cells by the arginine antimetabolite L-canavanine.
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L-Canavanine (CAV), the L-2-amino-4-guanidinooxy structural analogue of L-arginine (ARG), is a potent ARG antagonist which occurs in the jack bean, Canavalia ensiformis. This ARG antimetabolite is active against L1210 murine leukemia and a solid colonic tumor in the rat. Our initial studies using a
Cytotoxic potentiation of vinblastine and paclitaxel by L-canavanine in human cervical cancer and hepatocellular carcinoma cells.
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BACKGROUND
The non-protein amino acid L-canavanine (L-CAV), found in several plants of the family Fabaceae is an antimetabolite which shows anticancer activity due to its ability to be incorporated into protein in the place of its analogue, L-arginine (L-ARG), leading to the alteration of the 3D
L-Canavanine Potentiates Cytotoxicity of Chemotherapeutic Drugs in Human Breast Cancer Cells.
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BACKGROUND
Due to the high level of argininosuccinate synthase (ASS), a key enzyme for the formation of arginine from citrulline, human breast cancers are often resistant to arginine deprivation therapy. An antimetabolite, Lcanavanine (L-CAV), can be incorporated into proteins in the place of
Selective cytotoxicity of L-canavanine in tumorigenic Madin-Darby canine kidney T1 cells.
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L-canavanine, an analog of L-arginine, was examined for toxicity in a normal canine kidney epithelial cell line, Madin-Darby canine kidney (MDCK), and in its chemically transformed derivative MDCK-T1. Under conditions where the analog reversibly arrested growth of MDCK cells, more than 90% of the
Stress response, survival and enhancement of heat sensitivity in a human melanoma cell line treated with L-canavanine.
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L-Canavanine, like other aminoacid analogs, induces the synthesis of heat shock proteins (HPSs) but, unlike heat or other stressing agents, it fails to induce thermotolerance. We have studied the synthesis and the intracellular distribution of HSPs induced by canavanine, the effects of this analog
Effects of L-canavanine and ozone on vascular reactivity in septicemic rats.
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Septicemia leads to oxidative stress with overproduction of reactive-oxygen species (ROS) and consumption of endogenous antioxidant enzymes. We tested a twofold hypothesis: (1) does oxidative stress (OxS) induced by sepsis acting alone or in concert with augmented inflammatory processes contributes
The natural abundance of L-canavanine, an active anticancer agent, in alfalfa, medicago sativa (L.).
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L-Canavanine, a potentially toxic antimetabolite of L-arginine that is stored by many leguminous plants, has demonstrative antineoplastic activity against a number of animal-bearing carcinomas and cancer cell lines. This investigation evaluated the natural abundance of this anti-cancer compound in
Combination therapy with 5-fluorouracil and L-canavanine: in vitro and in vivo studies.
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L-Canavanine (CAV) is a potent L-arginine antagonist, produced by legumes such as the jack bean, Canavalia ensiformis. CAV is cytotoxic to MIA PaCa-2 human pancreatic cancer cells. We sought to determine whether CAV's efficacy as an anticancer agent might be increased in combination with
Arginine antimetabolite L-canavanine induces apoptotic cell death in human Jurkat T cells via caspase-3 activation regulated by Bcl-2 or Bcl-xL.
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L-Canavanine, a natural L-arginine analog, is known to possess cytotoxicity to tumor cells in culture and experimental tumors in vivo. In this study, we first show that apoptotic cell death is associated with antitumor activity of L-canavanine against human acute leukemia Jurkat T cells. When Jurkat
Antitumor activity of L-canavanine against L1210 murine leukemia.
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We have made a preliminary assessment of the antitumor activity of the arginine analog, L-canavanine, in leukemic mice. This analog is known to substitute for arginine in protein biosynthesis in many prokaryotic and eukaryotic systems. Previous studies with cells grown in vitro indicated that
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