[Identification of novel selective V(2) receptor non-peptide agonists]
>> Biochem Pharmacol. 2008 Aug 12. [Epub ahead of print]
Identification of novel selective V(2) receptor non-peptide agonists.
Del Tredici AL, Vanover KE, Knapp AE, Bertozzi SM, Nash NR, Burstein ES, Lameh J, Currier EA, Davis RE, Brann MR, Mohell N, Olsson R, Piu F.
ACADIA Pharmaceuticals Inc., San Diego, CA, United States.
Peptides with agonist activity at the vasopressin V(2) receptor are used clinically to treat fluid homeostasis disorders such as polyuria and central diabetes insipidus. Of these peptides, the most commonly used is desmopressin, which displays poor bioavailability as well as potent activity at the V(1b) receptor, with possible stress-related adverse effects. Thus, there is a strong need for the development of small molecule chemistries with selective V(2) receptor agonist activity. Using the functional cell-based assay Receptor Selection and Amplification Technology (R-SAT((R))), a screening effort identified three small molecule chemotypes (AC-94544, AC-88324, and AC-110484) with selective agonist activity at the V(2) receptor. One of these compounds, AC-94544, displayed over 180-fold selectivity at the V(2) receptor compared to related vasopressin and oxytocin receptors and no activity at 28 other G-protein-coupled receptors (GPCRs). All three compounds also showed partial agonist activity at the V(2) receptor in a cAMP accumulation assay. In addition, in a rat model of central diabetes insipidus, AC-94544 was able to significantly reduce urine output in a dose-dependent manner. Thus, AC-94544, AC-88324, and AC-110484 represent novel opportunities for the treatment of disorders associated with V(2) receptor agonist deficiency.<<
This wouldn't appear to be Acadia's bailiwick, but demonstrates there is a bit of value beyond what's in the clinic. Acadia does not have a pipeline chart, at least, not on its website. Rather annoying.
Stuff continues to come out with Brann's name on it, though it's been . . . what . . . two years? That's how long it takes this kind of research to work its way into print.
Cheers, Tuck |
