Estrone Sulfatase and Its Inhibitors

ISSN: 1875-5992 (Online)
ISSN: 1871-5206 (Print)

Volume 17, 14 Issues, 2017

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Anti-Cancer Agents in Medicinal Chemistry

Formerly: Current Medicinal Chemistry - Anti-Cancer Agents

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Michelle Prudhomme
Institut de Chimie de Clermont-Ferrand
Université Clermont Auvergne

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Estrone Sulfatase and Its Inhibitors

Anti-Cancer Agents in Medicinal Chemistry, 9(6): 599-612.

Author(s): Kwabina Aidoo-Gyamfi, Tim Cartledge, Kruti Shah and Sabbir Ahmed.

Affiliation: Department of Pharmacy, School of Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey, KT1 2EE, UK.


A high proportion (∼40%) of breast cancers are hormone-dependent and it is the female hormone estradiol (E2) that is believed to play a key role in the initiation, promotion and progression of this disease. In the fight against this disease, compounds which are potent inhibitors of the cytochrome P-450 enzyme aromatase (AR) (which catalyses the conversion of the C19 androgens to the C18 estrogens) have been the major target. However, the administration of AR inhibitors alone does not prevent the localised biosynthesis of estrone (E1) (and therefore the subsequent synthesis of E2) within breast tumour cells via alternative non-AR routes. This has therefore been the major impetus for the development of steroid sulfatase (E1STS) inhibitors. The E1STS enzyme regulates the formation of E1 from estrone sulfate (E1S), a steroid conjugate present in high concentrations in tissue and blood in women with breast cancer. The STS enzyme has also been shown to catalyse the formation of dehydroepiandrosterone (DHEA) from DHEA-sulfate (DHEAS). This is important since DHEA can be converted to 5-androstene-3β,17β-diol, which has been shown to possess weak estrogenic properties, however, due to the high concentration of this steroid, it is able to stimulate the growth of breast cancer cells in vitro and in vivo. Considerable progress has been made in recent years in the development of a number of potent E1STS inhibitors, as such both steroidal and non-steroidal compounds have been considered and a number of highly potent inhibitors have been produced and evaluated against what is now considered a crucial enzyme in the fight against hormone-dependent breast cancer. The review therefore summarises the work that has been undertaken todate.

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Article Details

Volume: 9
Issue Number: 6
First Page: 599
Last Page: 612
Page Count: 14
DOI: 10.2174/187152009788679985
Price: $58
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