Cited by 137Estrogen and related hormone effectsSteroid Chemistry and BiochemistryProstate Cancer Treatment and Research

Steroid sulfatase inhibitors for estrogen- and androgen-dependent cancers

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Purohit, Atul, Foster, Paul A·2012·Journal of Endocrinology

Abstract

Estrogens and androgens are instrumental in the maturation of many hormone-dependent cancers. Consequently, the enzymes involved in their synthesis are cancer therapy targets. One such enzyme, steroid sulfatase (STS), hydrolyses estrone sulfate, and dehydroepiandrosterone sulfate to estrone and dehydroepiandrosterone respectively. These are the precursors to the formation of biologically active estradiol and androstenediol. This review focuses on three aspects of STS inhibitors: 1) chemical development, 2) biological activity, and 3) clinical trials. The aim is to discuss the importance of estrogens and androgens in many cancers, the developmental history of STS inhibitor synthesis, the potency of these compounds in vitro and in vivo and where we currently stand in regards to clinical trials for these drugs. STS inhibitors are likely to play an important future role in the treatment of hormone-dependent cancers. Novel in vivo models have been developed that allow pre-clinical testing of inhibitors and the identification of lead clinical candidates. Phase I/II clinical trials in postmenopausal women with breast cancer have been completed and other trials in patients with hormone-dependent prostate and endometrial cancer are currently active. Potent STS inhibitors should become therapeutically valuable in hormone-dependent cancers and other non-oncological conditions.

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Crossref · 10.1530/joe-11-0266

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  • STX64 is effective in blocking synthesis in endometrial cancer cells in vitro.

    “including STX64, which was effective in blocking synthesis in endometrial cancer cells in vitro.”

    From Endometrial Intracrinology: Oestrogens, Androgens and Endometrial Disorders (2018) · cites this paper as [107]

    The “Maltais” section identifies STX64 as an effective steroid sulfatase inhibitor, supporting its ability to interfere with steroid synthesis. But the reported in vitro test used placental microsomes, not endometrial cancer cells; the “667 COUMATE and beyond” section discusses endometrial cancer only in an in vivo mouse model involving STX213. Our copy does not establish the claimed in vitro result for STX64. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The potential of STS inhibition has been evaluated in promising clinical trials.

    “The potential of STS inhibition has been evaluated in promising clinical trials (Geisler et al., 2011, Purohit and Foster, 2012, Thomas and Potter, 2015).”

    From Intracrine androgen biosynthesis, metabolism and action revisited (2018) · cites this paper as Purohit and Foster, 2012

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Research works printed but not linked: 2

  1. Reed MJ & Murray MAF 1979 The Oestrogens. In Hormones in Blood, edn 3, pp 263-266. Eds CH Gray & VHT James. London: Academic Press.
  2. Eds M Sandler & HJ Smith. Oxford University Press.

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Authors
Purohit, A., & Foster, P. A.
Affiliations
Hammersmith Hospital (GB)
Venue
Journal of Endocrinology
Published
2011-08-22
Volume
212
Issue
2
Pages
99-110
ISSN
  • 0022-0795 (ISSN-L)
  • 1479-6805
OpenAlex
W2143089038
Cited by
126
References
105
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 8 · 2020: 5 · 2019: 12 · 2018: 11 · 2017: 11 · 2016: 14 · 2015: 12 · 2014: 16 · 2013: 11 · 2012: 6
FWCI
1.11
Type
journal article
Language
en
Open access
Locations
  • Journal of Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
Ipsen
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
Keywords
steroid sulfatase inhibitors, steroid sulfatase, estrone sulfate, dehydroepiandrosterone sulfate, hormone-dependent tumors, breast cancer, prostate cancer, endometrial cancer, estrogen metabolism, androgen metabolism, drug development, clinical trials, postmenopausal women
MeSH terms
Androgens, Animals, Breast Neoplasms, Enzyme Inhibitors, Estrogens, Female, Humans, Male, Neoplasm Proteins, Neoplasms, Hormone-Dependent, Prostatic Neoplasms, Receptors, Androgen, Receptors, Estrogen, Antineoplastic Agents, Hormonal, Steryl-Sulfatase, Aromatase Inhibitors, Molecular Targeted Therapy

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