Methods for anti-addictive narcotic analgesic treatments
AssigneeThe Regents of the University of California
InventorWolfgang Sadée
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Abstract
A method for screening G protein coupled receptors is provided in which G protein coupled receptors that are constitutively active are determined, such as by measuring receptor phosphorylation agonist independent signaling. When a G protein coupled receptor is found to be regulated by constitutive activity, then assay systems may be set up to classify test compounds as agonists, neutral antagonists, or negative antagonists with respect to G protein coupled receptor signaling and phosphorylation. Such determinations and screening are useful for selecting new pharmaceuticals potentially useful in treating disease states mediated by & protein coupled receptors, with applications including treatments in conjunction with narcotic analgesia.
Claims9
An in vitro method of screening a test compound for effects on opioid μ receptors, comprising:
- providing cells having opioid μ receptors, the receptors having been pretreated by having been incubated with a narcotic analgesic functioning as an agonist therein for about 12 hours or longer, and then subsequently removing the narcotic analgesic so that the receptors are substantially free of narcotic analgesic, the receptors having a first receptor activity determined therefrom:
- determining a second receptor activity while the receptors are substantially free of narcotic analgesic, the second receptor activity determined in the presence of an inverse agonist associated with substantially all the receptors;
- determining a third receptor activity by contacting a test compound with the receptors having had the narcotic analgesic substantially removed therefrom;
- and,
- comparing the receptor activities.
Dependencies are inferred from the claim text.