Ponatinib is a pan-BCR-ABL kinase inhibitor: MD simulations and SIE study

PLoS One. 2013 Nov 13;8(11):e78556. doi: 10.1371/journal.pone.0078556. eCollection 2013.

Abstract

BCR-ABL kinase domain inhibition can be used to treat chronic myeloid leukemia. The inhibitors such as imatinib, dasatinib and nilotinib are effective drugs but are resistant to some BCR-ABL mutations. The pan-BCR-ABL kinase inhibitor ponatinib exhibits potent activity against native, T315I, and all other clinically relevant mutants, and showed better inhibition than the previously known inhibitors. We have studied the molecular dynamics simulations and calculated solvated interaction energies of native and fourteen mutant BCR-ABL kinases (M244V, G250E, Q252H, Y253F, Y253H, E255K, E255V, T315A, T315I, F317L, F317V, M351T, F359V and H396P) complexed with ponatinib. These studies revealed that the interactions between ponatinib and individual residues in BCR-ABL kinase are also affected due to the remote residue mutations. We report that some residues, Met244, Lys245, Gln252, Gly254, Leu370 and Leu298 do not undergo any conformational changes, while the fluctuations in residues from P-loop, β3-, β5- strands and αC- helix are mainly responsible for ponatinib binding to native and all mutant BCR-ABL kinases. Our work provides the molecular mechanisms of native and mutant BCR-ABL kinases inhibition by ponatinib at atomic level that has not been studied before.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemistry*
  • Catalytic Domain
  • Fusion Proteins, bcr-abl / antagonists & inhibitors*
  • Fusion Proteins, bcr-abl / chemistry
  • Fusion Proteins, bcr-abl / genetics
  • Humans
  • Hydrogen Bonding
  • Imidazoles / chemistry*
  • Molecular Dynamics Simulation*
  • Mutation, Missense
  • Protein Binding
  • Protein Structure, Secondary
  • Pyridazines / chemistry*
  • Solvents / chemistry
  • Thermodynamics
  • Water / chemistry

Substances

  • Antineoplastic Agents
  • Imidazoles
  • Pyridazines
  • Solvents
  • Water
  • ponatinib
  • Fusion Proteins, bcr-abl

Grants and funding

This work was supported by CSIR, Government of India, No. 02(0036)/11/EMR-II. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.