Comparative analysis of novel decynium-22 analogs to inhibit transport by the low-affinity, high-capacity monoamine transporters, organic cation transporters 2 and 3, and plasma membrane monoamine transporter

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dc.contributor.authorFraser-Spears, Ren_AU
dc.contributor.authorKrause-Heuer, AMen_AU
dc.contributor.authorBasiouny, Men_AU
dc.contributor.authorMayer, FPen_AU
dc.contributor.authorManishimwe, Men_AU
dc.contributor.authorWyatt, NAen_AU
dc.contributor.authorDobrowolski, JCen_AU
dc.contributor.authorRoberts, MPen_AU
dc.contributor.authorGreguric, Ien_AU
dc.contributor.authorKumar, Nen_AU
dc.contributor.authorKoek, Wen_AU
dc.contributor.authorSitte, HHen_AU
dc.contributor.authorCallaghan, PDen_AU
dc.contributor.authorFraser, BHen_AU
dc.contributor.authorDaws, LCen_AU
dc.date.accessioned2021-08-10T01:50:21Zen_AU
dc.date.available2021-08-10T01:50:21Zen_AU
dc.date.issued2019-01en_AU
dc.date.statistics2021-08-10en_AU
dc.description.abstractGrowing evidence supports involvement of low-affinity/high-capacity organic cation transporters (OCTs) and plasma membrane monoamine transporter (PMAT) in regulating clearance of monoamines. Currently decynium-22 (D22) is the best pharmacological tool to study these transporters, however it does not readily discriminate among them, underscoring a need to develop compounds with greater selectivity for each of these transporters. We developed seven D22 analogs, and previously reported that some have lower affinity for α1-adrenoceptors than D22 and showed antidepressant-like activity in mice. Here, we extend these findings to determine the affinity of these analogs for OCT2, OCT3 and PMAT, as well as serotonin, norepinephrine and dopamine transporters (SERT, NET and DAT) using a combination of uptake competition with [3H]methyl-4-phenylpyridinium acetate in overexpressed HEK cells and [3H]citalopram, [3H]nisoxetine and [3H]WIN 35428 displacement binding in mouse hippocampal and striatal preparations. Like D22, all analogs showed greater binding affinities for OCT3 than OCT2 and PMAT. However, unlike D22, some analogs also showed modest affinity for SERT and DAT. Dual OCT3/SERT and/or OCT3/DAT actions of certain analogs may help explain their ability to produce antidepressant-like effects in mice and help account for our previous findings that D22 lacks antidepressant-like effects unless SERT function is either genetically or pharmacologically compromised. Though these analogs are not superior than D22 in discriminating among OCTs/PMAT, our findings point to development of compounds with combined ability to inhibit both low-affinity/high-capacity transporters, such as OCT3, and high-affinity/low-capacity transporters, such as SERT, as therapeutics with potentially improved efficacy for treatment of psychiatric disorders. © 2021 Elsevier B.V.en_AU
dc.identifier.citationFraser-Spears, R., Krause-Heuer, A. M., Basiouny, M., Mayer, F. P., Manishimwe, R., Wyatt, N. A., Dobrowolski, J. C., Roberts, M. P., Greguric, I., Kumar, N., Koek, W., Sitte, H. H., Callaghan, P. D., Fraser, B. H., & Daws, L. C. (2019). Comparative analysis of novel decynium-22 analogs to inhibit transport by the low-affinity, high-capacity monoamine transporters, organic cation transporters 2 and 3, and plasma membrane monoamine transporter. European Journal of Pharmacology, 842, 351-364. doi:10.1016/j.ejphar.2018.10.028en_AU
dc.identifier.issn0014-2999en_AU
dc.identifier.journaltitleEuropean Journal of Pharmacologyen_AU
dc.identifier.pagination351-364en_AU
dc.identifier.urihttps://doi.org/10.1016/j.ejphar.2018.10.028en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11293en_AU
dc.identifier.volume842en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectCationsen_AU
dc.subjectMembranesen_AU
dc.subjectAntidepressantsen_AU
dc.subjectRadionuclide kineticsen_AU
dc.subjectInhibitionen_AU
dc.subjectDopamineen_AU
dc.titleComparative analysis of novel decynium-22 analogs to inhibit transport by the low-affinity, high-capacity monoamine transporters, organic cation transporters 2 and 3, and plasma membrane monoamine transporteren_AU
dc.typeJournal Articleen_AU
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