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New Aspects of Steroid Hormone Action in Hormone Dependent Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Endocrinology and Metabolism".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 3428

Special Issue Editor


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Guest Editor
Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
Interests: estrogens; androgens; progestagens; steroid transporters; steroid biosynthetic and metabolic enzymes; hormone-dependent diseases; intracrine action; inhibitors; biomarkers

Special Issue Information

Dear Colleagues,

Steroid hormones have a plethora of roles in human health and disease, and the number of newly identified functions in the human body continues to expand. Classical and non-classical roles of steroid hormones can be explained by endocrine, paracrine, autocrine and intracrine actions, and intracellularly by genomic and non-genomic signalling. Alterations in biosynthesis and the actions of steroid hormones are implicated in the development of various hormone-dependent diseases, including hormone-dependent cancers and several benign pathologies. Despite the years of research, there remains a significant lack of knowledge, especially about androgens in female diseases and oestrogens in diseases that affect males. The involvement of other steroid hormones and their metabolites in disease has also not been delineated in detail yet. This Special Issue will cover different aspects of steroid hormone actions in hormone-dependent diseases, with particular emphasis on steroid profiling in tissues and physiological fluids, biosynthesis and metabolism studies, and the molecular mechanisms that underlie the intracrine actions of steroid hormones. This Special Issue thus aims to contribute to the rapidly expanding knowledge regarding the involvement of steroid hormones in the pathophysiology of human diseases.

Dr. Tea Lanišnik Rižner
Guest Editor

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Keywords

  • androgens
  • estrogens
  • progestagens
  • hormone-dependent diseases
  • biomarkers

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Published Papers (1 paper)

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Research

26 pages, 4997 KiB  
Article
Altered Profile of E1-S Transporters in Endometrial Cancer: Lower Protein Levels of ABCG2 and OSTβ and Up-Regulation of SLCO1B3 Expression
by Renata Pavlič, Suzana Vidic, Maja Anko, Tamara Knific, Tomaž Büdefeld, Kristina Marton, Maša Sinreih, Stefan Poschner, Walter Jäger, Snježana Frković-Grazio and Tea Lanišnik Rižner
Int. J. Mol. Sci. 2021, 22(8), 3819; https://doi.org/10.3390/ijms22083819 - 7 Apr 2021
Cited by 9 | Viewed by 2613
Abstract
Endometrial cancer (EC) is associated with increased estrogen actions. Locally, estrogens can be formed from estrone-sulphate (E1-S) after cellular uptake by organic anion-transporting polypeptides (OATP) or organic anion transporters (OAT). Efflux of E1-S is enabled by ATP Binding Cassette transporters (ABC) and organic [...] Read more.
Endometrial cancer (EC) is associated with increased estrogen actions. Locally, estrogens can be formed from estrone-sulphate (E1-S) after cellular uptake by organic anion-transporting polypeptides (OATP) or organic anion transporters (OAT). Efflux of E1-S is enabled by ATP Binding Cassette transporters (ABC) and organic solute transporter (OST)αβ. Currently, 19 E1-S transporters are known but their roles in EC are not yet understood. Here, we analysed levels of E1-S transporters in Ishikawa (premenopausal EC), HEC-1-A (postmenopausal EC), HIEEC (control) cell lines, in EC tissue, examined metabolism of steroid precursor E1-S, studied effects of OATPs’ inhibition and gene-silencing on E1-S uptake, and assessed associations between transporters and histopathological data. Results revealed enhanced E1-S metabolism in HEC-1-A versus Ishikawa which could be explained by higher levels of OATPs in HEC-1-A versus Ishikawa, especially 6.3-fold up-regulation of OATP1B3 (SLCO1B3), as also confirmed by immunocytochemical staining and gene silencing studies, lower ABCG2 expression and higher levels of sulfatase (STS). In EC versus adjacent control tissue the highest differences were seen for ABCG2 and SLC51B (OSTβ) which were 3.0-fold and 2.1-fold down-regulated, respectively. Immunohistochemistry confirmed lower levels of these two transporters in EC versus adjacent control tissue. Further analysis of histopathological data indicated that SLCO1B3 might be important for uptake of E1-S in tumours without lymphovascular invasion where it was 15.6-fold up-regulated as compared to adjacent control tissue. Our results clearly indicate the importance of E1-S transporters in EC pathophysiology and provide a base for further studies towards development of targeted treatment. Full article
(This article belongs to the Special Issue New Aspects of Steroid Hormone Action in Hormone Dependent Diseases)
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