Document Detail


Elimination of hypoxic protection by 5-thio-D-glucose in multicell spheroids.
MedLine Citation:
PMID:  719634     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of 5-thio-D-glucose on oxic and hypoxic V79-171 Chinese hamster cells was studied in vitro with single cells and multicell spheroids. At concentrations that were not toxic to oxic cells, this compound killed hypoxic cells with a D0 of 1 hr with a 5 mM concentration and more rapidly at 10 mM beginning 2 hr after incubation at 37 degrees. 5-Thio-D-glucose also sensitized hypoxic cells to radiation and protected oxic cells from radiation damage. Multicell spheroids irradiated after incubation with the compound demonstrated increased radiosensitivity, although the relative contribution of cytotoxicity and hypoxic cell sensitization could not be evaluated. Spheroid reoxygenation by decreased cell respiration was determined not to be a contributing factor, suggesting that the spheroid-sensitizing effect was due to drug effects on hypoxic cells. The dramatic increase in multicell spheroid radiosensitivity that resulted from treatment with 5-thio-D-glucose suggests that this compound may be used to increase the effectiveness of radiotherapy by eliminating hypoxic protection.
Authors:
C W Song; J J Clement; S H Levitt
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Cancer research     Volume:  38     ISSN:  0008-5472     ISO Abbreviation:  Cancer Res.     Publication Date:  1978 Dec 
Date Detail:
Created Date:  1979-02-12     Completed Date:  1979-02-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2984705R     Medline TA:  Cancer Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  4499-503     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Anoxia*
Cell Survival / drug effects*,  radiation effects
Cells, Cultured
Glucose / analogs & derivatives*,  pharmacology
Oxygen*
Oxygen Consumption / drug effects
Radiation-Sensitizing Agents
Chemical
Reg. No./Substance:
0/Radiation-Sensitizing Agents; 50-99-7/Glucose; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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