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2017 ; 11
(ä): 1535-1557
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An in silico high-throughput screen identifies potential selective inhibitors for
the non-receptor tyrosine kinase Pyk2
#MMPMID28572720
Meirson T
; Samson AO
; Gil-Henn H
Drug Des Devel Ther
2017[]; 11
(ä): 1535-1557
PMID28572720
show ga
The non-receptor tyrosine kinase proline-rich tyrosine kinase 2 (Pyk2) is a
critical mediator of signaling from cell surface growth factor and adhesion
receptors to cell migration, proliferation, and survival. Emerging evidence
indicates that signaling by Pyk2 regulates hematopoietic cell response, bone
density, neuronal degeneration, angiogenesis, and cancer. These physiological and
pathological roles of Pyk2 warrant it as a valuable therapeutic target for
invasive cancers, osteoporosis, Alzheimer's disease, and inflammatory cellular
response. Despite its potential as a therapeutic target, no potent and selective
inhibitor of Pyk2 is available at present. As a first step toward discovering
specific potential inhibitors of Pyk2, we used an in silico high-throughput
screening approach. A virtual library of six million lead-like compounds was
docked against four different high-resolution Pyk2 kinase domain crystal
structures and further selected for predicted potency and ligand efficiency.
Ligand selectivity for Pyk2 over focal adhesion kinase (FAK) was evaluated by
comparative docking of ligands and measurement of binding free energy so as to
obtain 40 potential candidates. Finally, the structural flexibility of a subset
of the docking complexes was evaluated by molecular dynamics simulation, followed
by intermolecular interaction analysis. These compounds may be considered as
promising leads for further development of highly selective Pyk2 inhibitors.