The Effect of Ascorbic Acid (Vitamin C) on Two Tumor Cell Lines in Culture

Oncology ◽  
1978 ◽  
Vol 35 (4) ◽  
pp. 160-162 ◽  
Author(s):  
N. Bishun ◽  
T.K. Basu ◽  
S. Metcalfe ◽  
D.C. Williams
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Tumor Cell ◽  
Cell Lines ◽  
Tumor Cell Lines

Interaction of Human Tumor Cells with Human Platelets and the Coagulation System

1983 ◽  
Vol 50 (03) ◽  
pp. 726-730 ◽  
Author(s):  
Hamid Al-Mondhiry ◽  
Virginia McGarvey ◽  
Kim Leitzel
Keyword(s):  
Tumor Cell ◽  
Tumor Cells ◽  
Cell Lines ◽  
Human Tumor ◽  
Human Platelets ◽  
Factor Vii ◽  
Coagulation System ◽  
Breast Adenocarcinoma ◽  
Activate Factor ◽  
Tumor Cell Lines

SummaryThis paper reports studies on the interaction between human platelets, the plasma coagulation system, and two human tumor cell lines grown in tissue culture: Melanoma and breast adenocarcinoma. The interaction was monitored through the use of 125I- labelled fibrinogen, which measures both thrombin activity generated by cell-plasma interaction and fibrin/fibrinogen binding to platelets and tumor cells. Each tumor cell line activates both the platelets and the coagulation system simultaneously resulting in the generation of thrombin or thrombin-like activity. The melanoma cells activate the coagulation system through “the extrinsic pathway” with a tissue factor-like effect on factor VII, but the breast tumor seems to activate factor X directly. Both tumor cell lines activate platelets to “make available” a platelet- derived procoagulant material necessary for the conversion of prothrombin to thrombin. The tumor-derived procoagulant activity and the platelet aggregating potential of cells do not seem to be inter-related, and they are not specific to malignant cells.

Differential Increases in Glutathione S-Transferase Activities in a Range of Multidrug-Resistant Human Tumor Cell Lines

1989 ◽  
Vol 1 (6) ◽  
pp. 359-365 ◽  
Author(s):  
Richard D. H. Whelan ◽  
Louise K. Hosking ◽  
Alan J. Townsend ◽  
Kenneth H. Cowan ◽  
Bridget T. Hill
Keyword(s):  
Tumor Cell ◽  
Cell Lines ◽  
Human Tumor ◽  
Multidrug Resistant ◽  
Tumor Cell Lines ◽  
Glutathione S Transferase ◽  
Human Tumor Cell ◽  
Human Tumor Cell Lines

Cytotoxic Activities of Red Algae Collected from Jeju Island Against Four Tumor Cell Lines

2006 ◽  
Vol 11 (3) ◽  
pp. 177-183 ◽  
Author(s):  
Kil-Nam Kim ◽  
Ki-Wan Lee ◽  
Choon-Bok Song ◽  
Chang-Bum Ahn ◽  
You-Jin Jeon
Keyword(s):  
Tumor Cell ◽  
Cell Lines ◽  
Red Algae ◽  
Jeju Island ◽  
Cytotoxic Activities ◽  
Tumor Cell Lines

Synthesis and Cytotoxicity of New Mannich Bases of 6-[3-(3,4,5-Trimetoxyphenyl)-2- propenoyl]-2(3H)-Benzoxazolone

2020 ◽  
Vol 17 (4) ◽  
pp. 512-517
Author(s):  
Ognyan Ivanov Petrov ◽  
Yordanka Borisova Ivanova ◽  
Mariana Stefanova Gerova ◽  
Georgi Tsvetanov Momekov
Keyword(s):  
Tumor Cell ◽  
Cell Lines ◽  
Biological Activities ◽  
Human Tumor ◽  
Mannich Bases ◽  
In Vitro Cytotoxicity ◽  
Tumor Cell Lines ◽  
Human Tumor Cell ◽  
Human Tumor Cell Lines

Background: Chemotherapy is one of the mainstays of cancer treatment, despite the serious side effects of the clinically available anticancer drugs. In recent years increasing attention has been directed towards novel agents with improved efficacy and selectivity. Compounds with chalcone backbone have been reported to possess various biological activities such as anticancer, antimicrobial, anti-inflammatory, analgesic, antioxidant, etc. It was reported that aminomethylation of hydroxy chalcones to the corresponding Mannich bases increased their cytotoxicity. In this context, our interest has been focused on the design and synthesis of the so-called multi-target molecules, containing two or more pharmacophore fragments. Methods: A series of Mannich bases were synthesized by the reaction between 6-[3-(3,4,5- trimethoxyphenyl)-2-propenoyl]-2(3Н)-benzoxazolone, formaldehyde, and a secondary amine. The structures of the compounds were confirmed by elemental analysis, IR and NMR spectra. The new Mannich bases were evaluated for their in vitro cytotoxicity against a panel of human tumor cell lines, including BV-173, SKW-3, K-562, HL-60, HD-MY-Z and MDA-MB-231. The effects of selected compounds on the cellular levels of glutathione (GSH) were determined. Results: The new compounds 4a-e exhibited concentration-dependent cytotoxic effects at micromolar concentrations in MTT-dye reduction assay against a panel of human tumor cell lines, similar to those of starting chalcone 3. The tested agents led to concentration - dependent depletion of cellular GSH levels, whereby the effects of the chalcone prototype 3 and its Mannich base-derivatives were comparable. Conclusion: The highest chemosensitivity to the tested compounds was observed in BV- 173followed by SKW-3 and HL-60 cell lines.

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