The leukotriene B4 receptor 2 (BLT2) is a G-protein coupled receptor activated by 12()-hydroxyheptadeca-5,8,10-trienoic acid (12-HHT), which has been proposed as a promising therapeutic target for diabetic wound healing and gastrointestinal lesions. In this study, the rational design of a fluorescent probe based on the synthetic BLT2 agonist CAY10583 is described. The synthesis of several derivatives of CAY10583 coupled to fluorescein resulted in a traceable ligand suitable for different fluorescence-based techniques. An HTRF-based displacement assay (Tag-lite) on stably transfected CHO-K1 cells was developed to characterize binding properties of diverse BLT2 ligands. Highly specific binding to the BLT2 receptor was demonstrated in staining experiments on mouse skin tissue, and specific modulation of BLT2-induced cAMP signaling provided further evidence for receptor binding and ligand functionality. In conclusion, the fluorescent ligands developed in this study are suitable to investigate the pharmacology of BLT2 receptor ligands in a variety of assay systems.
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http://dx.doi.org/10.1021/acs.jmedchem.1c01589 | DOI Listing |
Front Clin Diabetes Healthc
December 2024
Department of Medicine, NU Hospital Group, Trollhättan and Uddevalla, Sweden.
Introduction: Type 1 diabetes involves immune-mediated destruction of insulin-producing beta cells, with eosinophils potentially playing a significant role. Recent studies suggest that leukotriene inhibition might influence this process. This case report presents a novel observation of montelukast, a leukotriene receptor antagonist, reducing insulin requirements in a patient with Latent Autoimmune Diabetes in Adults (LADA).
View Article and Find Full Text PDFCardiovasc Ther
January 2025
Institute of Cardiovascular Science, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China.
Cysteinyl leukotrienes (LTs) and their receptors are involved in the pathogenesis of abdominal aortic aneurysms (AAAs). However, whether CysLT1 receptor antagonists such as montelukast can influence experimental nondissecting AAA remains unclear. Nondissecting AAAs were induced in C57BL/6J mice by transient aortic luminal infusion of porcine pancreatic elastase (PPE).
View Article and Find Full Text PDFJ Med Virol
January 2025
Infection and Immunity Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor, Malaysia.
The two most clinically important members of the flavivirus genus, Zika virus (ZIKV) and dengue virus (DENV) pose a significant public health challenge. They cause a range of diseases in humans, from hemorrhagic to neurological manifestations, leading to economic and social burden worldwide. Nevertheless, there are no approved antiviral drugs to treat these infections.
View Article and Find Full Text PDFPol J Vet Sci
September 2024
Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland.
This study analysed the influence of montelukast (MON), a cysteinyl leukotriene receptor antagonist, and nifedipine, an L-type voltage-gated Ca2+ channel blocker, on the contractility of the porcine uterine smooth muscle. Myometrial strips were collected from the sexually immature (n=8), cyclic (12-14 days of the oestrous cycle; n=8) and pregnant (27-28 days of pregnancy; n=8) gilts and stimulated with a) MON or nifedipine at concentrations of 10-8-10-4 M and b) increasing concentrations of nifedipine after previous administration of MON at a concentration of 10-4 M. The changes in the tension, amplitude and frequency of contractions were determined with the Hugo Sachs Elektronik equipment for measuring isometric contractions.
View Article and Find Full Text PDFArch Toxicol
December 2024
Receptor Biology Laboratory, Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV, 26505, USA.
Exposure to fibrogenic multi-walled carbon nanotubes (MWCNTs) induces the production of proinflammatory lipid mediators (LMs) in myeloid cells to instigate inflammation. The molecular underpinnings of LM production in nanotoxicity remain unclear. Here we report that PU.
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