TTT-28

• CAT Number: I018775
• CAS Number: 1609138-51-3
• Molecular Formula: C31H31N3O6S
• Molecular Weight: 573.66
• Purity: ≥95%
• Synonyms: N-(2-benzoylphenyl)-2-[(1S)-2-methyl-1-[(3,4,5-trimethoxybenzoyl)amino]propyl]-1,3-thiazole-4-carboxamide
• InChI: InChI=1S/C31H31N3O6S/c1-18(2)26(34-29(36)20-15-24(38-3)28(40-5)25(16-20)39-4)31-33-23(17-41-31)30(37)32-22-14-10-9-13-21(22)27(35)19-11-7-6-8-12-19/h6-18,26H,1-5H3,(H,32,37)(H,34,36)/t26-/m0/s1
• InChIKey: VUSXKXGCZNKQFS-SANMLTNESA-N
• SMILES: CC(C)C(C1=NC(=CS1)C(=O)NC2=CC=CC=C2C(=O)C3=CC=CC=C3)NC(=O)C4=CC(=C(C(=C4)OC)OC)OC

TTT-28 is a synthesized thiazole-valine peptidomimetic, a novel selective inhibitor of ABCB1 (P-gp/MDR1) with high efficacy and low toxicity, which reverses the ATP-binding cassette sub-family B member 1 (ABCB1)-mediated multidrug resistance (MDR) by selectively blocking the efflux function of ABCB1[1].
TTT-28 (0-100 μM; 72 hours) reverses ABCB1-mediated MDR in drug selected SW620/Ad300 cells and transfected HEK293/ABCB1 cells; the IC50s of TTT-28 in CCD-18Co, SW620 and SW620/Ad300 cells are 213.4±11.0 μM, 89.4±3.9 μM and 92.0±5.0 μM, respectively[1].
TTT-28 (10 μM; 2 hours) raises the ABCB1-mediated MDR and increased the accumulation of [3H]-paclitaxel in ABCB1 overexpressing cells[1].
TTT-28 (10 μM; 0-72 hours) does not interfer with the expression level and localization of ABCB1, it results from blocking the efflux function of ABCB1[1].
TTT-28 (0-40 μM; 2 hours) interacts at the drug-substrate-binding site and actives the ATPase activity of ABCB1 in a concentration-dependent fashion[1].
TTT-28 (deliver orally; 30 mg/kg; every 3 rd day; 18 days) potentiates the anticancer activity of paclitaxel due to its inhibitory effect on the efflux function of ABCB1, it enhances the inhibitory effect of paclitaxel on the growth of SW620/Ad300 tumor and promoted apoptosis[1].

Reference

[1]. Wang YJ, et al. Thiazole-valine peptidomimetic (TTT-28) antagonizes multidrug resistance in vitro and in vivo by selectively inhibiting the efflux activity of ABCB1. Sci Rep. 2017 Feb 9;7:42106.
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