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Targeting RORs nuclear receptors by novel synthetic steroidal inverse agonists for autoimmune disorders

Dal Pra, M; Carta, D; Szabadkai, G; Suman, M; Frion-Herrera, Y; Paccagnella, N; Castellani, G; ... Ferlin, MG; + view all (2018) Targeting RORs nuclear receptors by novel synthetic steroidal inverse agonists for autoimmune disorders. Bioorganic & Medicinal Chemistry , 26 (8) pp. 1686-1704. 10.1016/j.bmc.2018.02.018. Green open access

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Abstract

Designing novel inverse agonists of NR RORγt still represents a challenge for the pharmaceutical community to develop therapeutics for treating immune diseases. By exploring the structure of NRs natural ligands, the representative arotenoid ligands and RORs specific ligands share some chemical homologies which can be exploited to design a novel molecular structure characterized by a polycyclic core bearing a polar head and a hydrophobic tail. Compound MG 2778 (8), a cyclopenta[a]phenantrene derivative, was identified as lead compound which was chemically modified at position 2 in order to obtain a small library for preliminary SARs. Cell viability and estrogenic activity of compounds 7, 8, 19a, 30, 31 and 32 were evaluated to attest selectivity. The selected 7, 8, 19a and 31 compounds were assayed in a Gal4 UAS-Luc co-transfection system in order to determine their ability to modulate RORγt activity in a cellular environment. They were evaluated as inverse agonists taken ursolic acid as reference compound. The potency of compounds was lower than that of ursolic acid, but their efficacy was similar. Compound 19a was the most active, significantly reducing RORγt activity at low micromolar concentrations.

Type: Article
Title: Targeting RORs nuclear receptors by novel synthetic steroidal inverse agonists for autoimmune disorders
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.bmc.2018.02.018
Publisher version: https://doi.org/10.1016/j.bmc.2018.02.018
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: NR RORγt, Inverse agonists, Gal4 UAS-Luc co-transfection, Autoimmune disorders
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: https://discovery.ucl.ac.uk/id/eprint/10048584
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