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Sida 1 från 107 resultat
Identification of ether à go-go and calcium-activated potassium channels in human melanoma cells.
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Ion channels and intracellular Ca2+ are thought to be involved in cell proliferation and may play a role in tumor development. We therefore characterized Ca(2+)-regulated potassium channels in the human melanoma cell lines IGR1, IPC298, and IGR39 using electrophysiological and molecular biological
Molecular proximity of Kv1.3 voltage-gated potassium channels and beta(1)-integrins on the plasma membrane of melanoma cells: effects of cell adherence and channel blockers.
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Tumor cell membranes have multiple components that participate in the process of metastasis. The present study investigates the physical association of beta1-integrins and Kv1.3 voltage-gated potassium channels in melanoma cell membranes using resonance energy transfer (RET) techniques. RET between
Antimetastatic action and hematological toxicity of p-(3,3-dimethyl-1-triazeno)benzoic acid potassium salt and 5-(3,3-dimethyl-1-triazeno)imidazole-4-carboxamide used as prophylactic adjuvants to surgical tumor removal in mice bearing B16 melanoma.
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The treatment of mice bearing i.m. B16 melanoma with equitoxic dosages of the clinically used 5-(3,3-dimethyl-1-triazeno)-imidazole-4-carboxamide (DTIC) and of its benzenoid water-soluble analogue p-(3,3-dimethyl-1-triazeno)benzoic acid potassium salt (DM-COOK) prior to surgical tumor removal
General Sensitization of melanoma cells for TRAIL-induced apoptosis by the potassium channel inhibitor TRAM-34 depends on release of SMAC.
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The death ligand TRAIL represents a promising therapeutic strategy for metastatic melanoma, however prevalent and inducible resistance limit its applicability. A new approach is presented here for sensitization to TRAIL. It is based on inhibition of the membrane potassium channel KCa3.1 (IK1), which
Evaluation of a KTP (potassium-titanyl-phosphate) 532 nm laser for endovaporization of choroidal melanomas.
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OBJECTIVE
The purpose of this in vitro study is to evaluate the use of the KTP (potassium-titanyl-phosphate) 532 nm laser for future use in endovaporization of large choroidal melanomas.
METHODS
A KTP 532 nm green laser coupled to a 0.3 mm fiberoptic probe was used to perform in vitro studies on
Potassium Ascorbate with Ribose: Promising Therapeutic Approach for Melanoma Treatment.
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While surgery is the definitive treatment for early-stage melanoma, the current therapies against advanced melanoma do not yet provide an effective, long-lasting control of the lesions and a satisfactory impact on patient survival. Thus, research is also focused on novel treatments that could
Properties of a potassium-selective ion channel in human melanoma cells.
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Currents through ion channels were measured from cells of a human melanin-producing melanoma cell line (IRG 1) with the patch clamp technique. In these cells the most frequently observed channel is a potassium channel. The channel activates slowly at depolarizing voltage steps but does not
Potassium channels and regulation of proliferation of human melanoma cells.
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1. Ion channels and their possible relation to cell proliferation have been studied in a human melanoma cell line (IGR 1). Membrane currents were recorded by the patch-clamp technique using the cell-attached, cell-free and whole-cell mode. Cell growth was monitored by counting the number of cells at
Expression and significance of HERG (KCNH2) potassium channels in the regulation of MDA-MB-435S melanoma cell proliferation and migration.
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The human ether-a-go-go related gene (HERG) potassium channel has elicited intense scientific interest due to its role in cardiac repolarization and its association with arrhythmia and sudden cardiac death. Increasing evidence indicates the involvement of HERG channels in the pathophysiology of
Critical role of reactive oxygen species (ROS) for synergistic enhancement of apoptosis by vemurafenib and the potassium channel inhibitor TRAM-34 in melanoma cells.
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Inhibition of MAP kinase pathways by selective BRAF inhibitors, such as vemurafenib and dabrafenib, have evolved as key therapies of BRAF-mutated melanoma. However, tumor relapse and therapy resistance have remained as major problems, which may be addressed by combination with other pathway
Migration-associated secretion of melanoma inhibitory activity at the cell rear is supported by KCa3.1 potassium channels.
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Malignant melanoma, characterized by invasive local growth and early formation of metastases, is the most aggressive type of skin cancer. Melanoma inhibitory activity (MIA), secreted by malignant melanoma cells, interacts with the cell adhesion receptors, integrins α(4)β(1) and α(5)β(1),
Silencing the KCNK9 potassium channel (TASK-3) gene disturbs mitochondrial function, causes mitochondrial depolarization, and induces apoptosis of human melanoma cells.
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TASK-3 (KCNK9 or K2P9.1) channels are thought to promote proliferation and/or survival of malignantly transformed cells, most likely by increasing their hypoxia tolerance. Based on our previous results that suggested mitochondrial expression of TASK-3 channels, we hypothesized that TASK-3 channels
Inhibition of leukocyte adherence by a 3 M potassium chloride extracts of human malignant melanoma.
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The tube leukocyte adherence inhibition (LAI) assay was performed using 3 M KCl extracts of malignant melanoma materials and leukocytes taken from 24 malignant melanoma patients. Of these patients, 21 participated in sequential studies which employed a minimum of 3 time points. An increasing
[Serum concentrations of magnesium, potassium, calcium and sodium in patients with malignant melanoma ].
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Single-channel potassium currents in human melanoma cells.
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