CX08005

CX08005 is a cell-permeable benzoic acid based compound, potent and substrate-competitive PTP1B/TCPTP dual inhibitor with anti-diabetic efficacy both in vitro and in vivo. CX08005 targets protein tyrosine phosphatase 1B (PTP1B) catalytic P-loop and acts as a substrate-competitive inhibitor against PTP1B and TCPTP (IC₅₀ = 781 and 475 nM, respectively) with much reduced potency toward LAR, SHP1, and VHR (by 52%, 89%, and 60%, respectively, at 10 μM). CX08005 enhances insulin-dependent cellular signaling (Eff. conc. 10 nM; HepG2 cells) and glucose uptake (Eff. conc. 100-500 nM; 3T3-L1 adipocityes and C2C12 myoblasts) in vitro, as well as improves glucose tolerance and insulin sensitivity in diet-induced obesity (DIO) mice and KKAy type 2 diabetes mice (50-200 mg/kg/day i.p.) in vivo with good pharmacokinetics in SD rats (C_max = 7425.9 ng/mL, T_max = 6.67 h,  t_1/2 = 2.5 h).