Molecular origin of cancer: Catechol estrogen-3,4-quinones as endogenous tumor initiators

Ercole Cavalieri, D. E. Stack, P. D. Devanesan, R. Todorovic, I. Dwivedy, S. Higginbotham, S. L. Johansson, K. D. Patil, M. L. Gross, J. K. Gooden, R. Ramanathan, Ronald Cerny, Eleanor G Rogan

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Abstract

Cancer is a disease that begins with mutation of critical genes: oncogenes and tumor suppressor genes. Our research on carcinogenic aromatic hydrocarbons indicates that depurinating hydrocarbon-DNA adducts generate oncogenic mutations found in mouse skin papillomas (Proc. Natl. Acad. Sci. USA 92:10422,1995). These mutations arise by mis-replication of unrepaired apurinic sites derived from the loss of depurinating adducts. This relationship led us to postulate that oxidation of the carcinogenic 4- hydroxy catechol estrogens (CE) of estrone (E1) and estradiol (E2) to catechol estrogen-3,4-quinones (CE-3, 4-Q) results in electrophilic intermediates that covalently bind to DNA to form depurinating adducts. The resultant apurinic sites in critical genes can generate mutations that may initiate various human cancers. The noncarcinogenic 2-hydroxy CE are oxidized to CE-2,3-Q and form only stable DNA adducts. As reported here, the CE-3,4-Q were bound to DNA in vitro to form the depurinating adduct 4-OHE1(E2)- 1(α,β)-N7Gua at 59-213 μmol/mol DNA-phosphate whereas the level of stable adducts was 0.1 μmol/mol DNA-phosphate. In female Sprague-Dawley rats treated by intramammillary injection of E2-3,4-Q (200 nmol) at four mammary glands, the mammary tissue contained 2.3 μmol 4-OHE2-1(αβ)-N7Gua/molDNA- phosphate. When 4-OHE1 (E2) were activated by horseradish peroxidase, lactoperoxidase, or cytochrome P450, 87-440 μmol of 4-OHE1(E2)-1(α,β)- N7Gua was formed. After treatment with 4-OHE2, rat mammary tissue contained 1.4 μmol of adduct/mol DNA-phosphate. In each case, the level of stable adducts was negligible. These results, complemented by other data, strongly support the hypothesis that CE-3,4-Q are endogenous tumor initiators.

Original languageEnglish (US)
Pages (from-to)10937-10942
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume94
Issue number20
DOIs
StatePublished - Sep 30 1997

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Catechol Estrogens
Carcinogens
DNA Adducts
Phosphates
Neoplasms
Mutation
DNA
Breast
Lactoperoxidase
Aromatic Hydrocarbons
Estrone
Papilloma
Horseradish Peroxidase
Human Mammary Glands
Hydrocarbons
Tumor Suppressor Genes
Oncogenes
Cytochrome P-450 Enzyme System
Genes
Sprague Dawley Rats

ASJC Scopus subject areas

  • General

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Molecular origin of cancer : Catechol estrogen-3,4-quinones as endogenous tumor initiators. / Cavalieri, Ercole; Stack, D. E.; Devanesan, P. D.; Todorovic, R.; Dwivedy, I.; Higginbotham, S.; Johansson, S. L.; Patil, K. D.; Gross, M. L.; Gooden, J. K.; Ramanathan, R.; Cerny, Ronald; Rogan, Eleanor G.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 94, No. 20, 30.09.1997, p. 10937-10942.

Research output: Contribution to journalArticle

Cavalieri, E, Stack, DE, Devanesan, PD, Todorovic, R, Dwivedy, I, Higginbotham, S, Johansson, SL, Patil, KD, Gross, ML, Gooden, JK, Ramanathan, R, Cerny, R & Rogan, EG 1997, 'Molecular origin of cancer: Catechol estrogen-3,4-quinones as endogenous tumor initiators', Proceedings of the National Academy of Sciences of the United States of America, vol. 94, no. 20, pp. 10937-10942. https://doi.org/10.1073/pnas.94.20.10937
Cavalieri, Ercole ; Stack, D. E. ; Devanesan, P. D. ; Todorovic, R. ; Dwivedy, I. ; Higginbotham, S. ; Johansson, S. L. ; Patil, K. D. ; Gross, M. L. ; Gooden, J. K. ; Ramanathan, R. ; Cerny, Ronald ; Rogan, Eleanor G. / Molecular origin of cancer : Catechol estrogen-3,4-quinones as endogenous tumor initiators. In: Proceedings of the National Academy of Sciences of the United States of America. 1997 ; Vol. 94, No. 20. pp. 10937-10942.
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