Structural Biology of Human Nuclear Receptors
Department of Biochemistry
and molecular Biology
University of Barcelona
Molecular Physiology Laboratory
Principal investigator: Eva Estébanez-Perpiñá PostDoc researcher: Marta Nadal PhD students: Alba Jiménez Lab Manager and Technician: Montserrat Abella
Our laboratory studies several members of the superfamily of nuclear receptors (NRs), which are transcription factors that regulate gene expression. There are 48 nuclear receptors in humans, some of them have their endogenous ligand and functions well characterized, while others are regarded as orphans as their ligand or function is still not completely understood.
We primarily focus on the androgen receptor (AR), glucocorticoid receptor (GR) and human tailless (NR2E1/TLX) receptor. AR is implicated in prostate cancer, androgen insensitivity syndromes and the rare neurodegenerative Kennedy’s disease. AR is also the central drug target to fight prostate cancer using antiandrogens. GR is an essential receptor for life and binds glucocorticoids, one of the most important drug classes to treat immune diseases and inflammation (asthma, psoriasis, arthritis). We study GR oligomerization to further understand its monomer to dimer to tetramer transitions and pharmacological outcome of glucocorticoids. Lastly, we focus on TLX for its therapeutic potential as drug target to treat glioblastoma and meduloblastoma as well as modulation of brain neurogenesis.
Nuclear Receptors Structure and Function Relationship
We tackle the biological processes controlled by NRs from a multidisciplinary approach using several biochemical and biophysical techniques (X-ray crystallography, SPR, SAXS, MS) as well as in vitro and in cellulo to understand their function in tissues under (patho)-physiological conditions.
AR, GR and TLX in Drug Discovery
- We combine structure-based drug design, combinatorial chemistry, and bioinformatics to identify novel first-in-class AR precision drugs against prostate cancer and other AR-related diseases.
- Our studies on GR oligomerization focuses on the development of novel glucocorticoids devoid of severe side effects that modulate GR multimers on chromatin.
- Design of TLX modulators to tackle incurable brain tumors.
Jiménez-Panizo A, Alegre-Martí A, Tettey TT, Fettweis G, Abella M, Antón R, Johnson TA, Kim S, Schiltz RL, Núñez-Barrios I, Font-Díaz J, Caelles C, Valledor AF, Pérez P, Rojas AM, Fernández-Recio J, Presman DM, Hager GL, Fuentes-Prior P, Estébanez-Perpiñá E. The multivalency of the glucocorticoid receptor ligand-binding domain explains its manifold physiological activities, Nucleic Acids Research, 2022; gkac1119, https://doi.org/10.1093/nar/gkac1119
Nadal M, Prekovic S, Gallastegui N, Helsen C, Abella M, Zielinska K, Gay M, Vilaseca M, Taulès M, Houtsmuller AB, van Royen ME, Claessens F, Fuentes-Prior P, Estébanez-Perpiñá E. Structure of the homodimeric androgen receptor ligand-binding domain. Nature Communications, 2017 Feb 6;8:14388.
Kandel P, Semerci F, Mishra R, Choi W, Bajic A, Baluya D, Ma L, Chen K, Cao AC, Phongmekhin T, Matinyan N, Jiménez-Panizo A, Chamakuri S, Raji IO, Chang L, Fuentes-Prior P, MacKenzie KR, Benn CL, Estébanez-Perpiñá E, Venken K, Moore DD, Young DW, Maletic-Savatic M. Oleic acid is an endogenous ligand of TLX/NR2E1 that triggers hippocampal neurogenesis. Proc Natl Acad Sci U S A, 2022 Mar 29; 119(13): e2023784119.
Fuentes-Prior P, Rojas A, Hagler AT, Estébanez-Perpiñá E. Diversity of Quaternary Structures Regulates Nuclear Receptor Activities. Trends Biochem Sci. 2019 Jan;44(1):2-6.
Gallastegui N, Mackinnon JA, Fletterick RJ, Estébanez-Perpiñá E. Advances in our structural understanding of orphan nuclear receptors. Trends Biochem Sci. 2015 Jan;40(1):25-35.