Hit-to-lead optimization of a latency-associated nuclear antigen inhibitor against Kaposi’s sarcoma-associated herpesvirus infections
摘要:
The Latency-associated nuclear antigen (LANA) plays a central role for the latent persistence of the Kaposi's Sarcoma Herpesvirus (KSHV) in the human host and helps to establish lifelong infections. Herein, we report our efforts towards hit-to-lead generation starting from a previously discovered LANADNA inhibitor. By tethering the viral genome to the host nucleosomes, LANA ensures the segregation and persistence of the viral DNA during mitosis. LANA is also required for the replication of the latent viral episome during the S phase of the cell cycle. We aim to inhibit the interaction between LANA and the viral genome to prevent the latent persistence of KSHV in the host organism. Medicinal chemistry-driven optimization studies and structure-activity-relationship investigation led to the discovery of an improved LANA inhibitor. The functional activity of our compounds was evaluated using a fluorescence polarization (FP)-based interaction inhibition assay and electrophoretic mobility shift assay (EMSA). Even though a crystal structure of the ligand protein complex was not available, we successfully conducted hit optimization toward a low micromolar protein-nucleic acid-interaction inhibitor. Additionally, we applied STD-NMR studies to corroborate target binding and to gain insights into the binding orientation of our most potent inhibitor, providing opportunities for further rational design of more efficient LANAtargeting anti KSHV agents in future studies. (C) 2020 The Author(s). Published by Elsevier Masson SAS.
[EN] MDM2 DEGRADERS AND USES THEREOF<br/>[FR] AGENTS DE DÉGRADATION DE MDM2 ET LEURS UTILISATIONS
申请人:KYMERA THERAPEUTICS INC
公开号:WO2021188948A1
公开(公告)日:2021-09-23
The present invention relates to compounds and methods useful for the modulation of mouse double minute 2 homolog ("MDM2") protein via ubiquitination and/or degradation by compounds according to the present invention.
The instant invention provides for compounds which comprise substituted triazoloquinazolinones that inhibit CHK1 activity. The invention also provides for compositions comprising such inhibitory compounds and methods of inhibiting CHK1 activity by administering the compound to a patient in need of treatment of cancer.