WYE-125132 is a highly potent, ATP-competitive and specific mammalian target of rapamycin (mTOR) inhibitor.
ChEBI: 1-[4-[1-(1,4-dioxaspiro[4.5]decan-8-yl)-4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-6-pyrazolo[3,4-d]pyrimidinyl]phenyl]-3-methylurea is a member of ureas.
wye-125132 (wye-132) is highly potent, atp-competitive, and specific inhibitor of mtor kinase with ic50 value of 0.19±0.07nmol/l, >5000-fold selective versus pi3ks [1].wye-125132 (wye-132) has been reported to mtorc1-dependent phosphorylation of s6k (t389) and mtorc2-dependent phos-phorylation of akt (s473) in immune-complex assay. in addition, in insulin-like growth factor-i(igf-i)–induced rat1, the pik3ca mutant mda361, or pten-null u87mg cells, wye-125132 (wye-132) has also been revealed to dose-dependently inhibit p-s6k(t389) and p-akt(s473) with ec50 in low nanomolar range. apart from these, wye-125132 (wye-132) has shown a potent anti-proliferative agent against mda361, pc3mm2, u87mg, a549, and hct116 cell lines. moreover, wye-125132 (wye-132) has noted a stronger inhibition of protein synthesis and cell size in mda361 and hek293 cell lines [1].
A single i.v. administration of 50 mg/kg WYE-132 (WYE-125132) into tumor-bearing mice leads to suppression of P-S6K(T389) and P-AKT(S473) for at least 8 hours in PC3MM2, MDA361, HCT116, and HT29 tumors, whereas the steady-state level of P-AKT(T308) is not significantly reduced, indicating that the antitumor efficacy of WYE-132 under such dosing regimens reflects the suppression of mTOR rather than PI3K. Oral administration of WYE-132 causes dose-dependent tumor growth delay in the PI3K/mTOR- and HER2-hyperactive MDA361 tumors with significant antitumor activity at 5 mg/kg, which correlates with a suppression P-S6 and P-AKT(S473) but not P-AKT(T308). An optimal dose of 50 mg/kg WYE-132 induces a substantial regression of large MDA361 tumors. WYE-132 also causes a potent and substantial tumor growth delay in the PTEN-null U87MG glioma[1].
mTOR: 0.19 nM (IC50); mTORC1; mTORC2; PI3Kα: 1.179 μM (IC50); PI3Kδ: 2.38 μM (IC50); hSMG1: 1.25 μM (IC50)
[1] yu k1, shi c, toral-barza l, lucas j, shor b, kim je, zhang wg, mahoney r, gaydos c, tardio l, kim sk, conant r, curran k, kaplan j, verheijen j, ayral-kaloustian s, mansour ts, abraham rt, zask a, gibbons jj. beyond rapalog therapy: preclinical pharmacology and antitumor activity of wye-125132, an atp-competitive and specific inhibitor of mtorc1 and mtorc2. cancer res. 2010 jan 15;70(2):621-31. doi: 10.1158/0008-5472.can-09-2340. epub 2010 jan 12.