Failure of 5-thio-D-glucose to alter cell survival in irradiated or unirradiated EMT6 tumors.
The antineoplastic effects of the glucose analog 5-thio-D-glucose (5TG) were tested using EMT6 mouse mammary tumors in vivo and EMT6 cells in cell culture. In vitro, 5TG selectively killed hypoxic EMT6 cells. However, administration of 5TG to mice bearing EMT6 tumors produced no significant toxicity to the cells of unirradiated tumors and did not alter the survival of cells in irradiated tumors. Fasting the mice to lower blood glucose concentrations before administration of 5TG increased the toxicity of the drug to the mice, but did not allow more efficacious treatment of the tumors. The data provided no evidence that 5-thio-D-glucose can be used effectively for the treatment of solid tumors, either as a cytotoxic agent or as a radiosensitizer.[1]References
- Failure of 5-thio-D-glucose to alter cell survival in irradiated or unirradiated EMT6 tumors. Rockwell, S., Schulz, R.J. Radiat. Res. (1984) [Pubmed]
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