| Bioactivity | TASP0390325 is a high affinity and orally active arginine vasopressin receptor 1B (V1B receptor) antagonist with antidepressant and anxiolytic activities[1]. |
| Invitro | TASP0390325 shows a high affinity and potent antagonist activity for V1B receptors[1]. TASP0390325 dose-dependently inhibits [3H]-AVP binding to recombinant human V1B receptors with the IC50 value of 2.72 nM[1]. TASP0390325 also inhibits [3H]-AVP binding to rat anterior pituitary membranes, with the IC50 value of 2.22 nM[1]. TASP0390325 potently attenuates the 2.5 nM AVP-induced increase in [Ca2+]i, with IC50 values of and 20.2 nM[1].Pretreatment with TASP0390325 inhibits the retention of 11C-TASP699 in a dose-dependent manner. Binding of 11C-TASP699 to monkey pituitary slices is specifically localized to the anterior lobe. The radioligand binding is inhibited by TASP0390325 in a concentration-dependent manner. The IC50 value of TASP0390325 is 2.16 nM[2]. |
| In Vivo | TASP0390325 blocks the anterior pituitary V1B receptor in vivo. Oral administration of TASP0390325 antagonized the increase in plasma ACTH levels induced by CRF/dDAVP in rats, indicating that TASP0390325 blocks the anterior pituitary V1B receptor in vivo. TASP0390325 (1 mg/kg) significantly antagonizes CRF/dDAVP-induced plasma ACTH in rats[1].Oral administration of TASP0390325 also exerts antidepressant effects in two models of depression (a forced swimming test and an olfactory bulbectomy model)[1]. Animal Model: |
| Name | TASP0390325 |
| CAS | 1642187-96-9 |
| Formula | C25H30Cl2FN5O4 |
| Molar Mass | 554.44 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | -20°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture) |
| Reference | [1]. M Iijima, et al. Antidepressant and anxiolytic profiles of newly synthesized arginine vasopressin V1B receptor antagonists: TASP0233278 and TASP0390325. Br J Pharmacol. 2014 Jul;171(14):3511-25. [2]. Kazumi Koga, et al. High-Contrast PET Imaging of Vasopressin V 1B Receptors with a Novel Radioligand, 11C-TASP699. J Nucl Med. 2017 Oct;58(10):1652-1658. |