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Mutation-mediated influences on binding of anaplastic lymphoma kinase to crizotinib decoded by multiple replica Gaussian accelerated molecular dynamics.

Abstract：

:Anaplastic lymphoma kinase (ALK) has been thought to be a prospective target of anti-drug resistance design in treatment of tumors and specific neuron diseases. It is highly useful for the seeking of possible strategy alleviating drug resistance to probe the mutation-mediated effect on binding of inhibitors to ALK. In the current work, multiple replica Gaussian accelerated molecular dynamics (MR-GaMD) simulations, molecular mechanics generalized Born surface area (MM-GBSA) and free energy landscapes were coupled to explore influences of mutations L1198F, L1198F/C1156Y, and C1156Y on the binding of the first ALK inhibitor crizotinib to ALK. The results suggest that three mutations obviously affect structural flexibility, motion modes and conformational changes of ALKs. L1198F and L1198F/C1156Y strengthen the binding of crizotinib to the mutated ALKs but C1156Y induces evident drug resistance toward crizotinib. Analyses of free energy landscapes show that stability in the orientation and positions of crizotinib relative to ALK plays a vital role in alleviating drug resistance of mutations toward crizotinib. Residue-based free energy decomposition method was utilized to evaluate the contributions of separate residues to the binding of crizotinib. The results not only indicate that the tuning of point mutation L1198F on interaction networks of crizotinib with ALK can be regarded as a possible strategy to relieve drug resistance of the mutated ALK but also further verify that residues L1122, V1130, L1196, L1198, M1199, and L1256 can be used as efficient targets of anti-drug resistance design induced by mutations.

journal_name

J Comput Aided Mol Des

journal_title

Journal of computer-aided molecular design

authors

Chen J,Wang W,Sun H,Pang L,Yin B

doi

10.1007/s10822-020-00355-5

subject

Has Abstract

pub_date

2020-12-01 00:00:00

pages

1289-1305

issue

12

eissn

0920-654X

issn

1573-4951

pii

10.1007/s10822-020-00355-5

journal_volume

34

pub_type

杂志文章

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