title: Kinase inhibitors compete with imipramine for binding and inhibition of serotonin transport.
abstract: Effects of kinase inhibitors and activators on the binding of tritiated imipramine and inhibition of serotonin uptake were tested in platelets. The majority of compounds inhibited specific [3H]imipramine binding and serotonin uptake with affinities similar to those reported for their action on protein kinases themselves. Many of these compounds are derivatives with modified naphthalenesulfonamide or isoquinolinesulfonamide structures, which appear to compete directly with imipramine for binding to the serotonin transporter. This is of great importance for studies involving kinase regulation since at these concentrations, the inhibitors and activators were previously thought to interact virtually exclusively with protein kinases.
authors.affiliation: Department of Psychiatry, Veterans Administration Medical Center, Long Beach, CA 90822.
authors.forename: D M
authors.initials: DM
authors.lastname: Helmeste
authors.forename: S W
authors.initials: SW
authors.lastname: Tang
mesh_terms: D001667:Binding, Competitive / Q000187:drug effects; D001792:Blood Platelets / Q000187:drug effects / Q000378:metabolism; D002352:Carrier Proteins / Q000037:antagonists & inhibitors* / Q000378:metabolism*; D004789:Enzyme Activation / Q000187:drug effects; D006801:Humans; D007099:Imipramine / Q000493:pharmacokinetics* / Q000494:pharmacology; D066298:In Vitro Techniques; D008562:Membrane Glycoproteins / Q000037:antagonists & inhibitors* / Q000378:metabolism*; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D047428:Protein Kinase Inhibitors; D011494:Protein Kinases / Q000378:metabolism; D012701:Serotonin / Q000378:metabolism; D012702:Serotonin Antagonists / Q000494:pharmacology; D050486:Serotonin Plasma Membrane Transport Proteins; D017366:Serotonin Receptor Agonists / Q000494:pharmacology
chemical_list: D002352:Carrier Proteins; D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D047428:Protein Kinase Inhibitors; C493230:SLC6A4 protein, human; D012702:Serotonin Antagonists; D050486:Serotonin Plasma Membrane Transport Proteins; D017366:Serotonin Receptor Agonists; D012701:Serotonin; D011494:Protein Kinases; D007099:Imipramine