Article
Neurosciences
Nycole Maza, Dandan Wang, Cody Kowalski, Hannah M. Stoveken, Maria Dao, Omar K. Sial, Andrew C. Giles, Brock Grill, Kirill A. Martemyanov
Summary: Repeated exposure to opioids leads to the development of tolerance, limiting their analgesic effects and increasing the risk of abuse and overdose. This study identified Ptchd1 as a gene involved in regulating opioid tolerance through its effects on receptor trafficking and desensitization. The findings suggest an evolutionarily conserved role for Ptchd1 in protecting against opioid overstimulation.
NATURE NEUROSCIENCE
(2022)
Article
Pharmacology & Pharmacy
Yixin Zhang, Peilan Zhou, Fengfeng Lu, Ruibin Su, Zehui Gong
Summary: Overexpression of A20-binding inhibitor of nuclear factor-kappa B (ABIN-1) attenuated morphine tolerance and dependence in mice, likely through facilitating beta-arrestin2 degradation. ABIN-1 targeted beta-arrestin2 to regulate morphine tolerance, suggesting it as a potential therapeutic target for alleviating morphine tolerance and dependence.
MOLECULAR PHARMACOLOGY
(2021)
Article
Biology
Seksiri Arttamangkul, Emily J. Platt, James Carroll, David Farrens
Summary: The study found that single cholinergic neurons in the mouse striatum express both MORs and DORs, and through fluorescent labeling and selective activation experiments, it was revealed their mechanisms in regulating cellular electrical activity. The results indicate that the two receptors function independently.
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)
Article
Biochemistry & Molecular Biology
Yusuke Mizobuchi, Kanako Miyano, Sei Manabe, Eiko Uezono, Akane Komatsu, Yui Kuroda, Miki Nonaka, Yoshikazu Matsuoka, Tetsufumi Sato, Yasuhito Uezono, Hiroshi Morimatsu
Summary: This study investigated the effects of ketamine on opioid tolerance and its potential mechanisms. The results showed that ketamine improved acute desensitization and enhanced beta-arrestin recruitment elicited by fentanyl but not by morphine. These effects may involve modulation of GRK-mediated pathways.
Article
Biochemistry & Molecular Biology
Eiko Uezono, Yusuke Mizobuchi, Kanako Miyano, Katsuya Ohbuchi, Hiroaki Murata, Akane Komatsu, Sei Manabe, Miki Nonaka, Takatsugu Hirokawa, Keisuke Yamaguchi, Masako Iseki, Yasuhito Uezono, Masakazu Hayashida, Izumi Kawagoe
Summary: This study investigated the desensitization profiles of REM and FEN to MOR. The results showed that the 2nd administration of FEN resulted in stronger MOR desensitization potency than REM, while REM showed higher internalization potency than FEN. These results suggest that different beta arrestin-mediated signaling caused by FEN or REM led to their distinct desensitization and internalization processes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Cell Biology
Aurelien Zarca, Claudia Perez, Jelle van den Bor, Jan Paul Bebelman, Joyce Heuninck, Rianna J. F. de Jonker, Thierry Durroux, Henry F. Vischer, Marco Siderius, Martine J. Smit
Summary: The study revealed that ACKR3 recruits beta-arrestins and internalizes to the cell membrane upon CXCL12 stimulation, with GRK2 and 3 playing key roles in beta-arrestin recruitment and receptor internalization.
Article
Cell Biology
Kateryna Murlanova, Yan Jouroukhin, Ksenia Novototskaya-Vlasova, Shovgi Huseynov, Olga Pletnikova, Michael J. J. Morales, Yun Guan, Atsushi Kamiya, Dwight E. E. Bergles, David M. M. Dietz, Mikhail V. V. Pletnikov
Summary: The function of mu opioid receptors in astrocytes and their role in reward- and aversion-associated behaviors have been investigated. The knockout of mu opioid receptors in astrocytes did not affect locomotor activity, anxiety, or object recognition in mice exposed to morphine. However, it enhanced locomotor activity and conditioned place aversion during naloxone-precipitated morphine withdrawal, which lasted for up to 6 weeks.
Review
Biochemistry & Molecular Biology
Ji-Woon Kim, Kanzo Suzuki, Ege T. Kavalali, Lisa M. Monteggia
Summary: Acute administration of (R,S)-ketamine produces rapid and sustained antidepressant effects by blocking NMDA receptors and inducing a novel form of synaptic plasticity in the hippocampus. This triggers downstream signaling events and transcriptional changes that contribute to the antidepressant effects. This review explores the intracellular signaling pathway triggered by ketamine and its connection to synaptic plasticity and sustained antidepressant effects.
TRENDS IN MOLECULAR MEDICINE
(2023)
Article
Multidisciplinary Sciences
Nuttawadee Ngamlertwong, Hiroyoshi Tsuchiya, Yuta Mochimaru, Morio Azuma, Takahiro Kuchimaru, Taka-aki Koshimizu
Summary: The study reveals the interaction between β-arrestin 2 and the μ-V1b heteromer and vasopressin receptors, showing β-arrestin 2's proximity to the receptors without and with agonist stimulation. A potential strategy for pharmacological intervention is indicated, targeting the vasopressin binding site to alleviate morphine analgesia tolerance.
SCIENTIFIC REPORTS
(2021)
Article
Pharmacology & Pharmacy
Sweta Adhikary, Omar Koita, Joseph J. Lebowitz, William T. Birdsong, John T. Williams
Summary: This study suggests that chronic opioid treatment alters kinase regulation of nonopioid GPCRs, highlighting the importance of sustained opioid receptor signaling in initiating adaptive processes downstream.
MOLECULAR PHARMACOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Kentaro Miyoshi, Satoshi Shimizu, Atsuko Shiraki, Moritoki Egi
Summary: Previous studies have focused on phosphorylation of the mu-opioid receptor to maintain cellular sensitivity, while recent attention has shifted towards ubiquitination as a form of posttranslational modification. In this study, a ubiquitination-deficient mutant of the mu-opioid receptor was generated to investigate its role in analgesic signaling, desensitization, and internalization. The findings suggest that ubiquitination is not essential for the Gi/o pathway and receptor phosphorylation, but instead regulates the internalization efficiency of the desensitized MOP.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Neurosciences
Li He, Sarah W. Gooding, Elinor Lewis, Lindsey C. Felth, Anirudh Gaur, Jennifer L. Whistler
Summary: Opioid drugs act by activating the mu-opioid receptor to provide analgesic effects, while potentially leading to side effects such as respiratory depression and tolerance development. Recent studies challenge the prevailing hypothesis that arrestin-3 recruitment contributes to respiratory depression and analgesic tolerance, proposing that future development of safer opioids should target ligands that recruit both G protein and arrestin-3.
NEUROPSYCHOPHARMACOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Joseph M. Martinez, Ao Shen, Bing Xu, Aleksandra Jovanovic, Josephine de Chabot, Jin Zhang, Yang K. Xiang
Summary: G protein-coupled receptors (GPCRs) promote the expression of immediate early genes required for learning and memory. β2-adrenergic receptor (β2AR) stimulation induces the nuclear export of phosphodiesterase 4D5 (PDE4D5), allowing for memory consolidation. This study reveals the mechanism of how β2AR phosphorylation by GRK promotes the nuclear export of PDE4D5, leading to nuclear cAMP signaling, changes in gene expression, and memory consolidation. The translocation of PDEs serves as a mechanism to promote cAMP signaling in specific subcellular locations downstream of GPCR activation.
Article
Anesthesiology
Ming-Chun Hsieh, Cheng-Yuan Lai, Chou-Ming Yeh, Po-Sheng Yang, Jen-Kun Cheng, Hsueh-Hsiao Wang, Kuan-Hung Lin, Siao-Tong Nie, Tzer-Bin Lin, Hsien-Yu Peng
Summary: This study suggests that phosphorylated UPF1-dependent nonsense-mediated & mu;-opioid receptor mRNA decay is involved in the pathogenesis of neuropathic pain.
Article
Pharmacology & Pharmacy
Jeffrey R. McArthur, Nehan R. Munasinghe, Rocio K. Finol-Urdaneta, David J. Adams, Macdonald J. Christie
Summary: Research has shown that Pn3a produces analgesic effects by inhibiting HVA Ca(v), with enhanced inhibition observed when co-administered with opioid agonists.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Siyao Wang, Simon R. Foster, Julie Sanchez, Leo Corcilius, Mark Larance, Meritxell Canals, Martin J. Stone, Richard J. Payne
Summary: The research demonstrates that glycosylation of CCL14 may influence its biological activity, especially with sialylated variants of CCL14(1-74) showing reduced activity when treated with plasmin.
ACS CHEMICAL BIOLOGY
(2021)
Article
Medicine, Research & Experimental
Jeffri S. Retamal, Megan S. Grace, Larissa K. Dill, Paulina Ramirez-Garcia, Scott Peng, Arisbel B. Gondin, Felix Bennetts, Sadia Alvi, Pradeep Rajasekhar, Juhura G. Almazi, Simona E. Carbone, Nigel W. Bunnett, Thomas P. Davis, Nicholas A. Veldhuis, Daniel P. Poole, Peter McIntyre
Summary: Serotonin (5-HT) mediates tissue edema and inflammation via the 5-HT2A receptor, TRPV4 activation, and neuropeptide release. Endothelial and epithelial cells act as physical barriers modulating fluid and molecule exchange, influenced by GPCR and ion channel signaling.
LABORATORY INVESTIGATION
(2021)
Editorial Material
Neurosciences
Alexander Gillis, Macdonald J. Christie
NEUROPSYCHOPHARMACOLOGY
(2021)
Review
Pharmacology & Pharmacy
Rob Hill, Meritxell Canals
Summary: Morphine and other opioids are widely used for pain treatment, but their side effects limit their use. Developing opioids with fewer side effects is a major research focus, but translating promising candidates from the lab to the clinic remains challenging.
PHARMACOLOGY & THERAPEUTICS
(2022)
Article
Gastroenterology & Hepatology
Jesse J. DiCello, Simona E. Carbone, Ayame Saito, Vi Pham, Agata Szymaszkiewicz, Arisbel B. Gondin, Sadia Alvi, Kiliana Marique, Priyank Shenoy, Nicholas A. Veldhuis, Jakub Fichna, Meritxell Canals, Arthur Christopoulos, Celine Valant, Daniel P. Poole
Summary: This study investigates the modulation of delta opioid receptor in the enteric nervous system using allosteric modulators, demonstrating the potential of positive allosteric modulation as a pharmacological approach to enhance opioid receptor signaling and suppress colonic motility. The findings suggest that allosteric modulation of opioid receptor signaling could be a therapeutic strategy for conditions such as irritable bowel syndrome.
AMERICAN JOURNAL OF PHYSIOLOGY-GASTROINTESTINAL AND LIVER PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Arsalan Yousuf, Xiaosa Wu, Anuja R. Bony, Mahsa Sadeghi, Yen-Hua Huang, David J. Craik, David J. Adams
Summary: alpha O-Conotoxin GeXIVA, derived from the venom of marine snail Conus generalis, has analgesic activity and acts on GABA(B) receptors, indicating a potential important receptor target for mediating analgesia. The peptide has different structural isomers, with the bead isomer being the most potent at nicotinic acetylcholine receptors.
JOURNAL OF NEUROCHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Julian A. Harris, Bryan Faust, Arisbel B. Gondin, Marc Andre Damgen, Carl-Mikael Suomivuori, Nicholas A. Veldhuis, Yifan Cheng, Ron O. Dror, David M. Thal, Aashish Manglik
Summary: The neuropeptide substance P activates the neurokinin-1 receptor through interactions deep within the receptor, while interactions between the neuropeptide and the receptor extracellular loops regulate G protein signaling selectivity. This study sheds light on how different stimuli can lead to distinct G protein signaling at the same receptor.
NATURE CHEMICAL BIOLOGY
(2022)
Article
Pharmacology & Pharmacy
Rob Hill, Andrew C. Kruegel, Jonathan A. Javitch, J. Robert Lane, Meritxell Canals
Summary: The study found differential effects of Mitragynine and its metabolite, 7-OH Mitragynine, on mouse respiration and anti-nociception. Mitragynine showed a ceiling effect on respiratory depression, while 7-OH Mitragynine had dose-dependent effects. Inhibition of CYP3A reduced the respiratory depressant effects and anti-nociception induced by Mitragynine, but had no effect on the effects of 7-OH Mitragynine. These findings suggest that metabolic saturation may contribute to the improved safety profile of Mitragynine.
BRITISH JOURNAL OF PHARMACOLOGY
(2022)
Article
Pharmacology & Pharmacy
Shuo Wang, Peter Bartels, Cong Zhao, Arsalan Yousuf, Zhuguo Liu, Shuo Yu, Anuja R. Bony, Xiaoli Ma, Qin Dai, Ting Sun, Na Liu, Mengke Yang, Rilei Yu, Weihong Du, David J. Adams, Qiuyun Dai
Summary: A novel alpha-conotoxin, Vt1.27, was identified from Conus vitulinus in the South China Sea, showing inhibitory effects on rat alpha 3 beta 2 nAChR subtype and Ca(V)2.2 calcium channels. Specific residues were found to significantly contribute to its inhibitory activity. It also exhibited potent anti-allodynic effect in pain models.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Anesthesiology
Hugo R. Arias, Han-Shen Tae, Laura Micheli, Arsalan Yousuf, Dina Manetti, Maria Novella Romanelli, Carla Ghelardini, David J. Adams, Lorenzo Di Cesare Mannelli
Summary: The study aimed to characterize the pharmacological and behavioral activity of two novel compounds, DM497 and DM490. It was found that DM497 could relieve neuropathic pain induced by oxaliplatin, while DM490 inhibited its effect at the same dose. These effects were not associated with changes in motor coordination or locomotor activity.
ANESTHESIA AND ANALGESIA
(2023)
Article
Pharmacology & Pharmacy
Rob Hill, Julie Sanchez, Laura Lemel, Mirjana Antonijevic, Yselkla Hosking, Shailesh N. Mistry, Andrew C. Kruegel, Jonathan A. Javitch, J. Robert Lane, Meritxell Canals
Summary: This study evaluated the effects of three novel opioids on respiratory depression and analgesia, and compared these measurements with their in vitro efficacy. The results showed that these opioids can induce respiratory depression and analgesia at certain doses, but there are differences in potency and duration of effect among the novel opioids.
BRITISH JOURNAL OF PHARMACOLOGY
(2023)
Meeting Abstract
Cell & Tissue Engineering
Mitchell St Clair-Glover, Amy Hulme, Sara Miellet, Rocio Finol-Urdaneta, Arsalan Yousuf, David Adams, Zhilian Yue, Gordon Wallace, Mirella Dottori, Mirella Dottori
TISSUE ENGINEERING PART A
(2022)
Article
Biochemistry & Molecular Biology
Quynh N. Mai, Priyank Shenoy, Tim Quach, Jeffri S. Retamal, Arisbel B. Gondin, Holly R. Yeatman, Luigi Aurelio, Joshua W. Conner, Daniel P. Poole, Meritxell Canals, Cameron J. Nowell, Bim Graham, Thomas P. Davis, Stephen J. Briddon, Stephen J. Hill, Christopher J. H. Porter, Nigel W. Bunnett, Michelle L. Halls, Nicholas A. Veldhuis
Summary: The study found that the NK1R antagonist Span-Chol has a prolonged analgesic effect mechanism: increasing local concentration at membranes, sustained decrease in NK1R endocytosis, and persistent inhibition of signaling from endosomes.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2021)