Abstract
Context
SHP2 is a non-receptor protein tyrosine phosphatase to remove tyrosine phosphorylation. Functionally, SHP2 is an essential bridge to connect numerous oncogenic cell-signaling cascades including RAS-ERK, PI3K-AKT, JAK-STAT, and PD-1/PD-L1 pathways. This study aims to discover novel and potent SHP2 inhibitors using a hierarchical structure-based virtual screening strategy that combines molecular docking and the fragment molecular orbital method (FMO) for calculating binding affinity (referred to as the Dock-FMO protocol). For the SHP2 target, the FMO method prediction has a high correlation between the binding affinity of the protein–ligand interaction and experimental values (R2 = 0.55), demonstrating a significant advantage over the MM/PBSA (R2 = 0.02) and MM/GBSA (R2 = 0.15) methods. Therefore, we employed Dock-FMO virtual screening of ChemDiv database of ∼2,990,000 compounds to identify a novel SHP2 allosteric inhibitor bearing hydroxyimino acetamide scaffold. Experimental validation demonstrated that the new compound (E)-2-(hydroxyimino)-2-phenyl-N-(piperidin-4-ylmethyl)acetamide (7188–0011) effectively inhibited SHP2 in a dose-dependent manner. Molecular dynamics (MD) simulation analysis revealed the binding stability of compound 7188–0011 and the SHP2 protein, along with the key interacting residues in the allosteric binding site. Overall, our work has identified a novel and promising allosteric inhibitor that targets SHP2, providing a new starting point for further optimization to develop more potent inhibitors.
Methods
All the molecular docking studies were employed to identify potential leads with Maestro v10.1. The protein–ligand binding affinities of potential leads were further predicted by FMO calculations at MP2/6-31G* level using GAMESS v2020 system. MD simulations were carried out with AmberTools18 by applying the FF14SB force field. MD trajectories were analyzed using VMD v1.9.3. MM/GB(PB)SA binding free energy analysis was carried out with the mmpbsa.py tool of AmberTools18. The docking and MD simulation results were visualized through PyMOL v2.5.0.
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Data Availability
FMO calculation was applied using FMO code version 5.1 as embedded in General Atomic and Molecular Electronic Structure System (GAMESS), available at https://www.msg.chem.iastate.edu/gamess/[M1] [z2] (accessed on 21 May 2022). Calculated energy values are summarized in the Supporting Information and Supplemental Data.
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Funding
This work was supported in part by the National Key R&D Program of China (2022YFC3400504), the National Natural Science Foundation of China (grants 82173690 to S.L.L. and 81825020 to H.L.,), and the Fundamental Research Funds for the Central Universities; S.L.L. is also sponsored by the Shanghai Rising-Star Program (23QA1402800). Honglin Li was also sponsored by the National Program for Special Supports of Eminent Professionals and National Program for Support of Top-Notch Young Professionals.
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Z.Y., M.Z., and L.C. performed research and drafted the manuscript; they contributed equally to the study. Z.Y. and M.Z. wrote the main manuscript, and L.C. conducted protein expression, purification, and biochemical assay. X.C., S.R., S.S., and Y.Z. performed the data collection. S.L., H.L., and L.Z. conceived and supervised the overall project. All authors reviewed the manuscript.
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Yuan, Z., Zhang, M., Chang, L. et al. Discovery of a novel SHP2 allosteric inhibitor using virtual screening, FMO calculation, and molecular dynamic simulation. J Mol Model 30, 131 (2024). https://doi.org/10.1007/s00894-024-05935-y
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DOI: https://doi.org/10.1007/s00894-024-05935-y