Exploration of the reaction mechanism of various interactions between metallodrugs active in the anticancer treatment with models of DNA/RNA (nucleobases, nucleotides or oligonucleotides) and proteins (amino acids or short peptide sequences) represent the main goal of the project. Having explored thermodynamic and kinetic parameters of cisplatin activation, i.e. the hydration process of replacement chloroligands with water, reaction mechanism of other metal complexes will be explored. Quantum chemical tools based on the DFT and combined QM/MM techniques will be employed. This concerns the so called piano—stool ruthenium(II) complexes (there are two families of them) where some basic aspect of the adduct formation with biomolecules are still uncleared. We plan to explore several points of this interactions. The role of the size of arene ligands plays important role. Similarly, the interaction of tetrakisacetato-diaqua-dirhodium(II,II) complexes with DNA bases represents very complex and demandin (en)
Osvětlení reakčních mechanismů interakcí organokovových komplexů s modely DNK/RNK (nukleobázemi, nukleotidy a oligonukleotidy) a proteinů (aminokyselinovými postranními řetězci popř. krátkými peptidovými sekvencemi) pomocí metod kvantové chemie
A combined QM/MM approach was applied for determination of energy characteristics of the Ru(ll)-complex cross-link formation with oligomeric models of ds-DNA. Calculations of dirhodium(ll,ll) complex with guanine were finished and estimated thermodynamic potentials and rate constants. We published a study where it was demonstrated that activation of Pt(IV) complexes has to occur through reductio (en)
Byly opublikovány výpočty kombinovaného přístupu QM/MM adičního a hydratačního procesu Ru(ll) komplexů s oligomérními modely ds-DNK. Byly dokončeny výpočty interakcí dirhodiového komplexu guaninem a stanoveny termodynamicské parametry reakce a její aktivační bariery. Byla opublikována studie aktivace Pt(IV) komplexů, která ukázala že process nemůže probíhat nejprve přes hydratační krok s následn (cs)