Scanning electron microscopy and transmission electron microscopy aspects of synergistic antitumor activity of vitamin C - vitamin K3 combinations against human prostatic carcinoma cells.

Title

Scanning electron microscopy and transmission electron microscopy aspects of synergistic antitumor activity of vitamin C - vitamin K3 combinations against human prostatic carcinoma cells.

Creator

Gilloteaux J; Jamison J M; Venugopal M; Giammar D; Summers J L

Publisher

Scanning microscopy

Date

1995
1995-03

Description

A MTT/formazan assay was used to evaluate the antitumor activity of vitamin C (Vit C), vitamin K3 (Vit K3), or vitamin C:vitamin K3 combinations against a human prostatic carcinoma cell line (DU145). Both Vit C and Vit K3 alone exhibited antitumor activity, but only at elevated doses. When Vit C and Vit K3 were combined at a C:K3 ratio of 100:1 and administered to the carcinoma cells, the 50% cytotoxic concentrations (CD50) of the vitamins decreased 10- to 60-fold. Subsequently, the DU145 cells were examined with transmission and scanning electron microscopy (TEM and SEM) following a 1 hour treatment with Vit C, Vit K3, or Vit C/K3 combined at their 50% cytotoxic dose. Our morphological data suggest that vitamin treatment with individual vitamins affects the cytoskeleton, the mitochondria, and other membranous components of the cell. Treatment with the vitamin combination appears to potentiate the effects of the individual vitamin treatment. Specifically, there are abundant necrotic cells. The surviving cells display morphological defects characteristic of cell injury.

Subject

Humans; Male; Antineoplastic Agents/*pharmacology; Drug Synergism; Coloring Agents; Ascorbic Acid/*pharmacology; Carcinoma/*drug therapy/pathology; Cell Membrane/drug effects/ultrastructure; Cytoskeleton/drug effects/ultrastructure; Mitochondria/drug effects/ultrastructure; Prostatic Neoplasms/*drug therapy/pathology; Tetrazolium Salts; Thiazoles; Vitamin K/*pharmacology; Microscopy; Electron; Cultured; Scanning; Tumor Cells; Drug Therapy; Combination

Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

159–173

Issue

1

Volume

9

Citation

Gilloteaux J; Jamison J M; Venugopal M; Giammar D; Summers J L, “Scanning electron microscopy and transmission electron microscopy aspects of synergistic antitumor activity of vitamin C - vitamin K3 combinations against human prostatic carcinoma cells.,” NEOMED Bibliography Database, accessed May 18, 2021, https://neomed.omeka.net/items/show/5440.

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