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Micro-pharmacokinetics: quantifying local drug concentration at live cell membranes (2018)
Journal Article
Gherbi, K., Briddon, S. J., & Charlton, S. J. (in press). Micro-pharmacokinetics: quantifying local drug concentration at live cell membranes. Scientific Reports, 8, Article 3479. https://doi.org/10.1038/s41598-018-21100-x

Fundamental equations for determining pharmacological parameters, such as the binding afnity of a ligand for its target receptor, assume a homogeneous distribution of ligand, with concentrations in the immediate vicinity of the receptor being the sam... Read More about Micro-pharmacokinetics: quantifying local drug concentration at live cell membranes.

A non-imaging high throughput approach to chemical library screening at the unmodified adenosine-A3 receptor in living cells (2017)
Journal Article
Arruda, M. A., Stoddart, L. A., Gherbi, K., Briddon, S. J., Kellam, B., & Hill, S. J. (in press). A non-imaging high throughput approach to chemical library screening at the unmodified adenosine-A3 receptor in living cells. Frontiers in Pharmacology, 8(908), https://doi.org/10.3389/fphar.2017.00908

Recent advances in fluorescent ligand technology have enabled the study of G protein-coupled receptors in their native environment without the need for genetic modification such as addition of N-terminal fluorescent or bioluminescent tags. Here, we h... Read More about A non-imaging high throughput approach to chemical library screening at the unmodified adenosine-A3 receptor in living cells.

Long receptor residence time of C26 contributes to super agonist activity at the human ?2 adrenoceptor (2016)
Journal Article
Rosethorne, E. M., Bradley, M. E., Gherbi, K., Sykes, D. A., Sattikar, A., Wright, J. D., …Charlton, S. J. (2016). Long receptor residence time of C26 contributes to super agonist activity at the human β2 adrenoceptor. Molecular Pharmacology, 89(4), 467-475. https://doi.org/10.1124/mol.115.101253

Super agonists produce greater functional responses than endogenous agonists in the same assay, and their unique pharmacology is the subject of increasing interest and debate. We propose that receptor residence time and the duration of receptor signa... Read More about Long receptor residence time of C26 contributes to super agonist activity at the human ?2 adrenoceptor.

Negative cooperativity across ?1-adrenoceptor homodimers provides insights into the nature of the secondary low-affinity CGP 12177 ?1-adrenoceptor binding conformation (2015)
Journal Article
Gherbi, K., May, L. T., Baker, J. G., Briddon, S. J., & Hill, S. J. (2015). Negative cooperativity across ?1-adrenoceptor homodimers provides insights into the nature of the secondary low-affinity CGP 12177 ?1-adrenoceptor binding conformation. FASEB Journal, 29(7), 2859-2871. https://doi.org/10.1096/fj.14-265199

At the β1-adrenoceptor, CGP 12177 potently antagonizes agonist responses at the primary high-affinity catecholamine conformation while also exerting agonist effects of its own through a secondary low-affinity conformation. A recent mutagenesis study... Read More about Negative cooperativity across ?1-adrenoceptor homodimers provides insights into the nature of the secondary low-affinity CGP 12177 ?1-adrenoceptor binding conformation.

Synthesis and characterization of high-affinity 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene-labeled fluorescent ligands for human ?-adrenoceptors (2011)
Journal Article
Baker, J. G., Adams, L. A., Salchow, K., Mistry, S. N., Middleton, R. J., Hill, S. J., & Kellam, B. (2011). Synthesis and characterization of high-affinity 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene-labeled fluorescent ligands for human ?-adrenoceptors. Journal of Medicinal Chemistry, 54(19), 6874-6887. doi:10.1021/jm2008562

The growing practice of exploiting noninvasive fluorescence-based techniques to study G protein-coupled receptor pharmacology at the single cell and single molecule level demands the availability of high-quality fluorescent ligands. To this end, this... Read More about Synthesis and characterization of high-affinity 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene-labeled fluorescent ligands for human ?-adrenoceptors.