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| Content Provider | PubMed Central |
|---|---|
| Author | Rahman, Adhip Hoque, Mohammad Mazharol Khan, Mohammad A. K. Sarwar, Md. G. Halim, Mohammad A. |
| Abstract | Capecitabine, a fluoropyrimidine prodrug, has been a frequently chosen ligand for the last one and half decades to inhibit thymidylate synthase (TYMS) for treatment of colorectal cancer. TYMS is a key enzyme for de novo synthesis of deoxythymidine monophosphate and subsequent synthesis of DNA. Recent years have also seen the trait of modifying ligands using halogens and trifluoromethyl (–CF3) group to ensure enhanced drug performance. In this study, in silico modification of capecitabine with Cl, Br, I atoms and –CF3 group has been performed. Density functional theory has been employed to optimize the drug molecules and elucidate their thermodynamic and electrical properties such as Gibbs free energy, enthalpy, electronic energy, dipole moment and frontier orbital features (HOMO–LUMO gap, hardness and softness). Flexible and rigid molecular docking have been implemented between drugs and the receptor TYMS. Both inter- and intra-molecular non-covalent interactions involving the amino acid residues of TYMS and the drug molecules are explored in details. The drugs were superimposed on the resolved crystal structure (at 1.9 Å) of ZD1694/dUMP/TYMS system to shed light on similarity of the binding of capecitabine, and its modifiers, to that of ZD1694. Together, these results may provide more insights prior to synthesizing halogen-directed derivatives of capecitabine for anticancer treatment. |
| Related Links | http://dx.doi.org/10.1186/s40064-016-1844-y |
| Starting Page | 146 |
| File Format | |
| ISSN | 21931801 |
| e-ISSN | 21931801 |
| Journal | SpringerPlus |
| Volume Number | 5 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2016-12-01 |
| Access Restriction | Open |
| Rights Holder | Springer International Publishing |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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