ML334 is a potent, cell-permeable activator of NRF2. It achieved through the inhibition of the Keap1-NRF2 protein-protein interaction. It demonstrates a binding affinity to Keap1 with a dissociation constant (Kd) of 1 μM in competitive surface plasmon resonance (SPR) assays. Furthermore, ML334 competes with an Nrf2 peptide, exhibiting an IC50 of 1.6 μM in fluorescence polarization (FP) assays[1-3].
ML334(100 μM; 3 hours) induces the expression and nuclear translocation of nuclear factor (erythroid-derived 2)-like 2 (NRF2) in HEK293 cells. Meanwhile, ML334 treatment induced the expression of HO-1 and TRX1 proteins in HEK293 cells [4].ML334-induced (50 μM; 48 hours) overexpression of Nrf2 enhances the antifibrotic effect of panaxatriol saponin (PTS) in cardiac fibroblasts[5].
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[3]. Wang L, Lewis T. et,al. The identification and characterization of non-reactive inhibitor of Keap1-Nrf2 interaction through HTS using a fluorescence polarization assay. 2012 Dec 17 [updated 2013 Sep 16]. In: Probe Reports from the NIH Molecular Libraries Program [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2010–. PMID: 24260785.
[4]. Wen X, Thorne G, et,al. Activation of NRF2 Signaling in HEK293 Cells by a First-in-Class Direct KEAP1-NRF2 Inhibitor. J Biochem Mol Toxicol. 2015 Jun;29(6):261-6. doi: 10.1002/jbt.21693. Epub 2015 Feb 12. PMID: 25683455; PMCID: PMC4713195.
[5]. Yao H, He Q, et,al. Panaxatriol saponin ameliorates myocardial infarction-induced cardiac fibrosis by targeting Keap1/Nrf2 to regulate oxidative stress and inhibit cardiac-fibroblast activation and proliferation. Free Radic Biol Med. 2022 Sep;190:264-275. doi: 10.1016/j.freeradbiomed.2022.08.016. Epub 2022 Aug 14. Erratum in: Free Radic Biol Med. 2023 Jun;202:34. PMID: 35977659.
ML334是一种有效的NRF2细胞渗透性激活剂。通过抑制Keap1-NRF2蛋白-蛋白相互作用实现。在竞争表面等离子体共振(SPR)实验中,它与Keap1具有1 μM的解离常数(Kd)。此外,ML334与Nrf2肽竞争,IC50为1.6 μM[1-3]。
ML334(100μM;3h)诱导HEK293细胞中NRF2的表达和核易位。同时,ML334处理诱导 HEK293 细胞中的 HO-1 和 TRX1 蛋白表达[4]。ML334诱导(50 μM;48h)Nrf2的过表达增强了panaxatriol saponin (PTS)在心脏成纤维细胞中的抗纤维化作用[5]。
















