Article
Biochemistry & Molecular Biology
Laura Lemel, Katarzyna Niescierowicz, M. Dolores Garcia-Fernandez, Leonardo Darre, Thierry Durroux, Marta Busnelli, Mylene Pezet, Fabrice Rebeille, Juliette Jouhet, Bernard Mouillac, Carmen Domene, Bice Chini, Vadim Cherezov, Christophe J. Moreau
Summary: The study revealed a stable binding of cholesterol molecules to OXTR in the presence of orthosteric ligands, leading to a positive cross-regulation between cholesterol and orthosteric ligands, which preserves the activity of the receptor in cholesterol-depleted membranes.
JOURNAL OF LIPID RESEARCH
(2021)
Article
Multidisciplinary Sciences
Yann Waltenspuhl, Jeliazko R. Jeliazkov, Lutz Kummer, Andreas Pluckthun
Summary: This study presents an engineering strategy to improve the properties of challenging GPCRs by combining three directed evolution methods. Utilizing a Next-Generation Sequencing (NGS) strategy, the study successfully selected improved variants of the human oxytocin receptor and compared mutations in different hosts. This research provides insights into the evolutionary pressure on the same membrane protein in prokaryotes and eukaryotes and offers a general methodology for accurate analysis of point mutants during directed evolution.
SCIENTIFIC REPORTS
(2021)
Article
Pharmacology & Pharmacy
Xiaoli Wei, Fan Yin, Miaomiao Wu, Qianqian Xie, Xueqin Zhao, Cheng Zhu, Ruiqian Xie, Chongqing Chen, Menghua Liu, Xueying Wang, Ruixue Ren, Guijie Kang, Chenwen Zhu, Jingjing Cong, Hua Wang, Xuefu Wang
Summary: Nonalcoholic fatty liver disease (NAFLD) is a common chronic liver disease worldwide. G protein-coupled receptor 35 (GPR35) plays a role in metabolic stresses, but its role in NAFLD has been unknown. In this study, we found that hepatocyte GPR35 regulates hepatic cholesterol homeostasis and mitigates NASH. Overexpression of GPR35 protected against diet-induced steatohepatitis, while loss of GPR35 had the opposite effect. Activation of GPR35 with the agonist kynurenic acid (Kyna) suppressed steatohepatitis in mice.
ACTA PHARMACEUTICA SINICA B
(2023)
Article
Biotechnology & Applied Microbiology
Tomoko Yoshino, Sayaka Tayama, Yoshiaki Maeda, Kazushi Fujimoto, Shuhei Ota, Shunya Waki, David Kisailus, Tsuyoshi Tanaka
Summary: Magnetospirillum magneticum produces magnetic nanoparticles called magnetosomes, which are composed of a magnetite core and a lipid bilayer membrane. By genetic engineering, human transmembrane protein-magnetosome complexes were successfully created for ligand screening and drug discovery, but the functionality of human GPCRs expressed on bacterial membranes may be compromised due to the lack of essential phospholipids. To address this issue, enzymes producing phosphatidylcholine were expressed in M. magneticum to generate and incorporate PC into cell- and magnetosome-membranes.
METABOLIC ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Hsin-Yung Yen, Idlir Liko, Wanling Song, Parth Kapoor, Fernando Almeida, Joanna Toporowska, Karolina Gherbi, Jonathan T. S. Hopper, Steven J. Charlton, Argyris Politis, Mark S. P. Sansom, Ali Jazayeri, Carol Robinson
Summary: This study presents a mass spectrometry-based approach to investigate the biased signaling and allosteric modulation of the beta(1)-adrenergic receptor in response to different ligands. The researchers discovered that isoprenaline can act as a biased agonist and that endogenous zinc ions enhance the binding between the receptor and G(s) proteins.
Article
Biochemistry & Molecular Biology
Xianlong Gao, Garrett A. Enten, Anthony J. DeSantis, Matthias Majetschak
Summary: This study utilized various biotechniques to confirm that chemokine receptor 4, atypical chemokine receptor 3, alpha(1a)-adrenoceptor, and arginine vasopressin receptor 1A can form hetero-oligomers composed of 2-4 different protomers, with ligand binding and hetero-oligomerization regulating agonist-induced signaling transduction. These findings suggest that receptor hetero-oligomers have unique signaling properties different from individual protomers, providing a mechanism for context-dependent receptor function.
Review
Biochemistry & Molecular Biology
Dekel David, Ziv Bentulila, Merav Tauber, Yair Ben-Chaim
Summary: GPCRs are involved in signal transduction processes, and although they span the cell membrane, they have not been considered to be regulated by membrane potential. Recent studies, however, have shown that several GPCRs are voltage regulated. This review discusses the advances in understanding the voltage dependence of GPCRs, the suggested molecular mechanisms, and the possible physiological roles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Li-Hua Zhao, Jingyu Lin, Su-Yu Ji, X. Edward Zhou, Chunyou Mao, Dan-Dan Shen, Xinheng He, Peng Xiao, Jinpeng Sun, Karsten Melcher, Yan Zhang, Xiao Yu, H. Eric Xu
Summary: This study presents the structures of CRF2R bound to UCN1 and coupled to G proteins G(11) and G(o), and compares them with the structure of CRF2R bound to G(s), uncovering the structural differences that determine the selective coupling of G protein subtypes by CRF2R.
NATURE COMMUNICATIONS
(2022)
Review
Pharmacology & Pharmacy
Sergi Ferre, Francisco Ciruela, Carmen W. Dessauer, Javier Gonzalez-Maeso, Terence E. Hebert, Ralf Jockers, Diomedes E. Logothetis, Leonardo Pardo
Summary: The study proposes the concept of GPCR-effect assemblies (GEMMAs), which are pre-assembled before receptor activation and allow more efficient interactions between specific signaling components. This offers an alternative model to the conventional collision coupling model and explains the differential properties of GPCRs in different cellular environments.
PHARMACOLOGY & THERAPEUTICS
(2022)
Article
Pharmacology & Pharmacy
Jyrki P. Kukkonen
Summary: Recent data indicates cooperative effects between identical orthosteric binding sites in a G-protein-coupled receptor dimer. A mathematical model was created to test this concept, showing that even a neutral receptor ligand can allosterically affect agonist binding through the orthosteric binding site.
PHARMACOLOGICAL RESEARCH
(2021)
Review
Cell Biology
Haoran Jiang, Daniella Galtes, Jialu Wang, Howard A. Rockman
Summary: This review explores the signaling pathways, dynamic structures, and physiological relevance of the three most important GPCR signaling effectors in the cardiovascular system: heterotrimeric G proteins, GPCR kinases (GRKs), and 8-arrestins. It summarizes their prominent roles in GPCR pharmacology before transitioning into less well-explored areas. The application of new technologies has contributed to an increasing understanding of GPCR structure and downstream effectors.
AMERICAN JOURNAL OF PHYSIOLOGY-CELL PHYSIOLOGY
(2022)
Article
Pharmacology & Pharmacy
Estefania Moreno, Nil Casajuana-Martin, Michael Coyle, Baruc Campos Campos, Ewa Galaj, Claudia Llinas del Torrent, Arta Seyedian, William Rea, Ning-Sheng Cai, Alessandro Bonifazi, Benjamin Floran, Zheng-Xiong Xi, Xavier Guitart, Vicent Casado, Amy H. Newman, Christopher Bishop, Leonardo Pardo, Sergi Ferre
Summary: This study provides evidence that heteromerization of G protein-coupled receptors (GPCRs), specifically dopamine D1 and D3 receptors, can influence the pharmacological properties of selective ligands. In vivo experiments support the involvement of D1R-D3R heteromers in the development of L-DOPA-induced dyskinesia in Parkinson's disease, suggesting the potential of targeting GPCR heteromers for drug development.
PHARMACOLOGICAL RESEARCH
(2022)
Article
Cell Biology
Laura M. Chamness, Nathan B. Zelt, Haley R. Harrington, Charles P. Kuntz, Brian J. Bender, Wesley D. Penn, Joshua J. Ziarek, Jens Meiler, Jonathan P. Schlebach
Summary: Mammalian forms of the gonadotropin-releasing hormone receptor exhibit apparent instability due to specific residue variations, affecting membrane integration and function. Evolutionary trends suggest that changes in residue polarity track with reproductive phenotypes, highlighting the importance of cotranslational folding in tuning membrane protein fitness.
Article
Biochemistry & Molecular Biology
Juergen Einsiedel, Maximilian F. Schmidt, Harald Huebner, Peter Gmeiner
Summary: A broadly applicable synthesis method was developed for peptides incorporating mixed disulfides between cysteine and homocysteine and cysteamine. The method was successfully applied to pharmacologically relevant GPCR ligands and showed covalent binding to neurotensin receptor 1 in a radioligand depletion study.
BIOORGANIC & MEDICINAL CHEMISTRY
(2022)
Article
Pharmacology & Pharmacy
Sam Groom, Nina K. Blum, Alexandra E. Conibear, Alexander Disney, Rob Hill, Stephen M. Husbands, Yangmei Li, Lawrence Toll, Andrea Kliewer, Stefan Schulz, Graeme Henderson, Eamonn Kelly, Chris P. Bailey
Summary: This study confirmed that Compound 1 is a G protein-biased mu agonist that can induce substantial rapid receptor desensitisation in mammalian neurons. However, contrary to previous assumptions, the desensitisation effect of Compound 1 is dependent on G protein-coupled receptor kinase (GRK).
BRITISH JOURNAL OF PHARMACOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Maria Marti-Solano
Summary: Members of the G protein-coupled receptor (GPCR) family can sense a wide range of biomolecules and activate intracellular signalling cascades that regulate key aspects of cell physiology, making them the most successful drug target class so far. However, understanding the direct links between receptor activation and physiological outcomes is still a challenge. Recent studies using novel biosensors and high-throughput techniques have revealed how receptor function can be diversified in a spatial, temporal, or cell-specific manner, impacting our understanding of receptor function in health and disease, and aiding in the search for more selective and effective GPCR drug candidates.
BIOCHEMICAL SOCIETY TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
Marie-Lise Jobin, Veronique De Smedt-Peyrusse, Fabien Ducrocq, Rim Baccouch, Asma Oummadi, Maria Hauge Pedersen, Brian Medel-Lacruz, Maria-Florencia Angelo, Sandrine Villette, Pierre Van Delft, Laetitia Fouillen, Sebastien Mongrand, Jana Selent, Tarson Tolentino-Cortez, Gabriel Barreda-Gomez, Stephane Gregoire, Elodie Masson, Thierry Durroux, Jonathan A. Javitch, Ramon Guixa-Gonzalez, Isabel D. Alves, Pierre Trifilieff
Summary: Increasing evidence suggests a connection between lipid metabolism and mental health, particularly in relation to polyunsaturated fatty acids (PUFAs). Recent findings show that PUFA levels in the brain are linked to dopamine transmission, a key system involved in psychiatric symptoms. However, the underlying mechanisms of this relationship are still unclear.
MOLECULAR PSYCHIATRY
(2023)
Article
Toxicology
Eric March-Vila, Giacomo Ferretti, Emma Terricabras, Ines Ardao, Jose Manuel Brea, Maria Jose Varela, Alvaro Arana, Juan Andres Rubiolo, Ferran Sanz, Maria Isabel Loza, Laura Sanchez, Hector Alonso, Manuel Pastor
Summary: In order to reduce the impact of human activity on the environment, many industries in the leather and textile sector are adopting measures to characterize the chemical safety of substances commonly used in their processes. This study compiles and annotates the substances used in this sector, using a combination of data collection, experimental methods, and in silico predictions. The results show that in silico methods can provide reasonably good hazard estimations and fill knowledge gaps in the chemical space of the leather and textile industry.
ARCHIVES OF TOXICOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Pablo Rodriguez-Belenguer, Karolina Kopanska, Jordi Llopis-Lorente, Beatriz Trenor, Javier Saiz, Manuel Pastor
Summary: In the simulation prediction of drug-induced ventricular arrhythmia, precomputed simulation result matrices can be used to reduce computation time and improve efficiency in predicting biomarkers such as action potential duration (APD90). Machine learning methods are applied to predict simulation results, leading to a decrease in computation time. This approach can be applied in other fields to reduce computational cost.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2023)
Article
Chemistry, Physical
Semen Yesylevskyy, Hector Martinez-Seara, Pavel Jungwirth
Summary: This study investigates the influence of membrane curvature on Ca2+ binding to phospholipid bilayers using molecular dynamics simulations. The results show that Ca2+ ions preferentially bind to the concave surfaces of both zwitterionic and anionic bilayers. The membrane curvature also leads to significant changes in binding, including differences in ion concentrations, lipid coordination distributions, and binding patterns to different chemical groups of lipids. The effects of curvature differ between the concave and convex monolayers, and charge scaling is found to reduce Ca2+ binding to curved phosphatidylserine bilayers.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Vojtech Kostal, Philip E. Mason, Hector Martinez-Seara, Pavel Jungwirth
Summary: We conducted ab initio molecular dynamics simulations based on density functional theory to investigate the hydration structure of common alkali and alkali earth metal cations. Our findings suggest that the widely used atom pairwise dispersion correction scheme D3 leads to inaccuracies in the hydration structures of these cations by assigning dispersion coefficients based on the neutral form of the atom rather than its actual oxidation state. To address this issue, we propose disabling the D3 correction specifically for all cation-including pairs, resulting in a significantly improved agreement with experimental data.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Editorial Material
Biotechnology & Applied Microbiology
Ferran Sanz, Francois Pognan, Thomas Steger-Hartmann, Carlos Diaz, eTRANSAFE Consortium
Summary: Thirteen pharmaceutical companies have collaborated to share and integrate preclinical and clinical data, creating computational resources to improve translational drug safety assessment.
NATURE REVIEWS DRUG DISCOVERY
(2023)
Article
Medicine, Legal
Mark T. D. Cronin, Samuel J. Belfield, Katharine A. Briggs, Steven J. Enoch, James W. Firman, Markus Frericks, Clare Garrard, Peter H. Maccallum, Judith C. Madden, Manuel Pastor, Ferran Sanz, Inari Soininen, Despoina Sousoni
Summary: In silico predictive models for toxicology, which include QSAR and PBK approaches, are used to predict physico-chemical and ADME properties, toxicological effects, and internal exposure. The FAIR principles have been applied to these models to improve their availability, reproducibility, and regulatory acceptance. Eighteen principles covering all aspects of FAIR have been developed, intending to increase the use and acceptance of in silico predictive models for toxicology.
REGULATORY TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Toxicology
Karolina Kopanska, Pablo Rodriguez-Belenguer, Jordi Llopis-Lorente, Beatriz Trenor, Javier Saiz, Manuel Pastor
Summary: In silico methods can be used to assess the arrhythmogenic properties of drug candidates early on. This research focuses on developing uncertainty quantification methods for predictions made by multi-level proarrhythmia models. By using probabilistic simulations and replacing single-point estimates with distributions, this approach provides a more comprehensive understanding of drug effects. The methodology was tested on a series of well-characterized marketed drugs.
ARCHIVES OF TOXICOLOGY
(2023)
Article
Chemistry, Medicinal
Pablo Rodriguez-Belenguer, Victor Mangas-Sanjuan, Emilio Soria-Olivas, Manuel Pastor
Summary: Drug development requires the comprehensive evaluation of candidate drugs' safety and efficacy. In silico toxicology (IST) methods, which have advantages in terms of cost and time, can be used in conjunction with in vitro and in vivo experimental methods. One particular method, Quantitative Structure-Activity Relationships (QSAR), has been successful in predicting simple toxicity but struggles with more complex phenomena. The authors propose a methodology that combines multiple QSAR models and incorporates pharmacokinetic (PK) information to improve predictions of these complex toxicity endpoints.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Biochemistry & Molecular Biology
Alba Garcia-Baos, Antoni Pastor, Ines Gallego-Landin, Rafael de la Torre, Ferran Sanz, Olga Valverde
Summary: Patients with Fetal Alcohol Spectrum Disorder (FASD) exhibit long-lasting cognitive disabilities, including memory deficits, but the underlying neurobiological mechanisms are not clear. By studying alcohol-exposed mice, researchers found that prenatal and lactation alcohol exposure induces FASD-like memory impairments through the reduction of N-acylethanolamines (NAEs) and peroxisome proliferator-activated receptor gamma (PPAR-gamma) in the hippocampus during a childhood-like period. Pharmacological interventions targeting NAEs and PPAR-gamma were able to improve memory deficits, and overexpression of PPAR-gamma in hippocampal astrocytes mitigated memory impairments induced by alcohol exposure.
MOLECULAR PSYCHIATRY
(2023)
Article
Biochemistry & Molecular Biology
Adrian Tejero, David Agustin Leon-Navarro, Mairena Martin
Summary: L-Glutamate (L-Glu) is an amino acid that plays a crucial role in the central nervous system as the main excitatory neurotransmitter involved in learning and memory processes. It is regulated by adenosine receptors, and high concentrations of L-Glu can induce oxidative stress and act as a neurotoxin. Investigating the impact of L-Glu consumption during gestation and lactation on oxidative stress markers and neurotransmitter receptors in the cerebellum is important to understand its effects on foetuses and neonates.
PURINERGIC SIGNALLING
(2023)
Article
Chemistry, Physical
Petro Khoroshyy, Hector Martinez-Seara, Jitka Myskova, Josef Lazar
Summary: This study investigates the dynamics of transition dipole moments (TDMs) in fluorescent proteins (FPs) using time-resolved fluorescence polarization measurements and molecular dynamics simulations. The results show significant differences in the orientation of the excitation and emission TDMs in the investigated FPs, but these differences are largely attributed to the rapid motions of fluorophores within the FP molecular framework. These findings provide insights for improved determinations of orientational distributions of FP molecules and more accurate interpretations of fluorescence resonance energy transfer (FRET) observations.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Borja Diaz de Grenu, Diego M. Fernandez-Aroca, Juan A. Organero, Gema Dura, Felix Angel Jalon, Ricardo Sanchez-Prieto, M. Jose Ruiz-Hidalgo, Ana Maria Rodriguez, Lucia Santos, Jose L. Albasanz, Blanca R. Manzano
Summary: Compound 6, a new derivative of aromatase inhibitors, exhibits higher inhibitory activity and potent cytostatic behavior compared to established inhibitors, making it a promising candidate for hormone-dependent cancer treatment.
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2023)