Abstract
SHP2 phosphatase, encoded by the PTPN11 gene, is a non-receptor PTP, which plays an important role in growth factor, cytokine, integrin, hormone signaling pathways, and regulates cellular responses, such as proliferation, differentiation, adhesion migration and apoptosis. Many studies have reported that upregulation of SHP2 expression is closely related to human cancer, such as breast cancer, liver cancer and gastric cancer. Hence, SHP2 has become a promising target for cancer immunotherapy. In this paper, we reported the identification of compound 1 as SHP2 inhibitor. Fragment-based ligand design, De novo design, ADMET and Molecular docking were performed to explore potential selective SHP2 allosteric inhibitors based on SHP836. The results of docking studies indicated that the selected compounds had higher selective SHP2 inhibition than existing inhibitors. Compound 1 was found to have a novel selectivity against SHP2 with an in vitro enzyme activity IC50 value of 9.97 μM. Fluorescence titration experiment confirmed that compound 1 directly bound to SHP2. Furthermore, the results of binding free energies demonstrated that electrostatic energy was the primary factor in elucidating the mechanism of SHP2 inhibition. Dynamic cross correlation studies also supported the results of docking and molecular dynamics simulation. This series of analyses provided important structural features for designing new selective SHP2 inhibitors as potential drugs and promising candidates for pre-clinical pharmacological investigations.
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Abbreviations
- JMML:
-
Juvenile myelomonocytic leukemia
- MS:
-
Myelodysplastic syndrome
- AML:
-
Acute myeloid leukemia
- TCPTP:
-
T cell protein-tyrosine phosphatase
- PTP1B:
-
Protein tyrosine phosphatase 1B
- SHP1:
-
SH2 domain-containing phosphatase 1
- H bond:
-
Hydrogen bond
- ADMET:
-
Absorption, distribution, metabolism, excretion, and toxicity
- MCSS:
-
Multi-copy simultaneous search
- FBDD:
-
Fragment based drug design
- HIA:
-
Human intestinal absorption
- BBB:
-
Blood–brain barrier
- PPB:
-
Aqueous solubility plasma protein binding
- PME:
-
Particle mesh Ewald
- MM-PBSA:
-
Molecular mechanics Poisson Boltzmann surface area
- LCPO:
-
Linear combination of pairwise overlaps
- DCC:
-
Dynamic cross correlation
- MD:
-
Molecular dynamics
- HTVS:
-
High throughput virtual screening
- RMSD:
-
Root mean square deviation
- RMSF:
-
Root mean square fluctuation
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Acknowledgements
This study was supported by the Natural Science Foundations of China (Grant No. 81273361), the Natural Science Foundation of Tianjin (Grant No. 16JCZDJC32500) and the International (Regional) Cooperation and Exchange Project of the National Natural Science Foundation of China (Grant No. 81611130090). The Science & Technology Development Fund of Tianjin Education Commission for Higher Education (Grant No. 2017KJ229).
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Liu, WS., Jin, WY., Zhou, L. et al. Structure based design of selective SHP2 inhibitors by De novo design, synthesis and biological evaluation. J Comput Aided Mol Des 33, 759–774 (2019). https://doi.org/10.1007/s10822-019-00213-z
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DOI: https://doi.org/10.1007/s10822-019-00213-z