Oncoscience

Selective glucocorticoid receptor-activating adjuvant therapy in cancer treatments

Nora Sundahl1,2, Dorien Clarisse1,2,3, Marc Bracke1,2, Fritz Offner4, Wim Vanden Berghe5, Ilse M. Beck1,2,*

1 Laboratory of Experimental Cancer Research (LECR), Department of Radiation Oncology & Experimental Cancer Research, Ghent University, Gent, Belgium

2 Cancer Research Institute Ghent (CRIG), Ghent, Belgium

3 Receptor Research Laboratories, Nuclear Receptor Lab (NRL), VIB Medical Biotechnology Center, Ghent University, Ghent, Belgium

4 Hematology, Department of Internal Medicine, Ghent University, Ghent, Belgium

5 Laboratory of Protein Chemistry, Proteomics and Epigenetic Signaling, Department of Biomedical Sciences, University of Antwerp, Wilrijk, Belgium

* From October 2016 onwards, IM Beck can be contacted via Ilse.Beck@odisee.be, affiliation: Health Care Biomedical Laboratory Technology, Technology Campus Ghent, Odisee University College, Ghent, Belgium

Correspondence:

Ilse M. Beck, email:

Keywords: glucocorticoids, selective glucocorticoid receptor agonist, selective glucocorticoid receptor modulator, cancer, he- matological malignancies, therapy resistance

Received: February 11, 2016 Accepted: July 08, 2016 Published: July 27, 2016

Abstract

Although adverse effects and glucocorticoid resistance cripple their chronic use, glucocorticoids form the mainstay therapy for acute and chronic inflammatory disorders, and play an important role in treatment protocols of both lymphoid malignancies and as adjuvant to stimulate therapy tolerability in various solid tumors. Glucocorticoid binding to their designate glucocorticoid receptor (GR), sets off a plethora of cell-specific events including therapeutically desirable effects, such as cell death, as well as undesirable effects, including chemotherapy resistance, systemic side effects and glucocorticoid resistance. In this context, selective GR agonists and modulators (SEGRAMs) with a more restricted GR activity profile have been developed, holding promise for further clinical development in anti-inflammatory and potentially in cancer therapies. Thus far, the research into the prospective benefits of selective GR modulators in cancer therapy limped behind. Our review discusses how selective GR agonists and modulators could improve the therapy regimens for lymphoid malignancies, prostate or breast cancer. We summarize our current knowledge and look forward to where the field should move to in the future. Altogether, our review clarifies novel therapeutic perspectives in cancer modulation via selective GR targeting.


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