eIF4E-IN-1 (WO2021003194A1, compound Y), is a highly effective inhibitor of eIF4E, a key proteininvolved in immunosuppression. By targeting immune checkpoint proteins such as PD-1, PD-L1, LAG3, TIM3, and IDO, eIF4E-IN-1 functions to disrupt immune suppression and promote immune release in specific diseases such as cancer and infectious diseases.
(Z)-4EGI-1 is the Z-isomer of 4EGI-1 and is an inhibitor of eIF4EeIF4G interaction and of translation initiation. (Z)-4EGI-1 effectively binds to eIF4E with an IC50 of 43.5 μM and a Kd value of 8.74 μM. (Z)-4EGI-1 has anticancer activity[1][2]. [1]. Khuloud Takrouri, et al. Structure-activity Relationship Study of 4EGI-1, Small Molecule eIF4EeIF4G Protein-ProteinInteraction Inhibitors. Eur J Med Chem. 2014 Apr 22;77:361-77. [2]. Poornachandran Mahalingam, et al. Synthesis of Rigidified eIF4EeIF4G inhibitor-1 (4EGI-1) Mimetic and Their in Vitro Characterization as Inhibitors of Protein-ProteinInteraction. J Med Chem. 2014 Jun 26;57(12):5094-111.