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The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

High resistance to cisplatin in human ovarian cancer cell lines is associated with marked increase of glutathione synthesis.

Open access
Godwin, A K, Meister, A, O'Dwyer, P J, Huang, C S, Hamilton, T C, Anderson, M E·1992·Proceedings of the National Academy of Sciences

Abstract

Exposure of human ovarian tumor cell lines to cisplatin led to development of cell lines that exhibited increasing degrees of drug resistance, which were closely correlated with increase of the levels of cellular glutathione. Cell lines were obtained that showed 30- to 1000-fold increases in resistance; these cells also had strikingly increased (13- to 50-fold) levels of glutathione as compared with the drug-sensitive cells of origin. These levels of resistance to cisplatin and the cellular glutathione levels are substantially greater than previously reported. Very high cisplatin resistance was associated with enhanced expression of mRNAs for gamma-glutamylcysteine synthetase and gamma-glutamyl transpeptidase; immunoblots showed increase of gamma-glutamylcysteine synthetase but not of glutathione synthetase. Glutathione S-transferase activity was unaffected, as determined with chlorodinitrobenzene as a substrate. These studies suggest the potential value of examining regulation of glutathione synthesis as an indicator of clinical prognosis. The highly resistant cell lines are proving useful for studying the multiple mechanisms by which tumor cells acquire drug- and radiation-resistance.

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Metadata

Authors
Godwin, A. K., Meister, A., O'Dwyer, P. J., Huang, C. S., Hamilton, T. C., & Anderson, M. E.
Venue
Proceedings of the National Academy of Sciences
Published
1992-04
Volume
89
Issue
7
Pages
3070-3074
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2071756286
Cited by
925
References
5
FWCI
9.42
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: High resistance to cisplatin in human ovarian cancer cell lines is associated with marked increase of glutathione synthesis. https://app.cochat.ai/papers/10.1073/pnas.89.7.3070
The paper
Godwin, A. K., Meister, A., O'Dwyer, P. J., Huang, C. S., Hamilton, T. C., & Anderson, M. E. (1992). High resistance to cisplatin in human ovarian cancer cell lines is associated with marked increase of glutathione synthesis. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.89.7.3070

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