Comparative mapping of on-targets and off-targets for the discovery of anti-trypanosomatid folate pathway inhibitors
Background Multi-target approaches are necessary to properly analyze or modify the function of a biochemical pathway or a protein family. An example of such a problem is the repurposing of the known human anti-cancer drugs, antifolates, as selective anti-parasitic agents. This requires considering a...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 September 2017
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| In: |
Biochimica et biophysica acta. General subjects
Year: 2017, Volume: 1861, Issue: 12, Pages: 3215-3230 |
| ISSN: | 1872-8006 |
| DOI: | 10.1016/j.bbagen.2017.09.012 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1016/j.bbagen.2017.09.012 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0304416517302969 
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| Author Notes: | Joanna Panecka-Hofman, Ina Pöhner, Francesca Spyrakis, Talia Zeppelin, Flavio Di Pisa, Lucia Dello Iacono, Alessio Bonucci, Antonio Quotadamo, Alberto Venturelli, Stefano Mangani, Maria Paola Costi, Rebecca C. Wade |
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| 245 | 1 | 0 | |a Comparative mapping of on-targets and off-targets for the discovery of anti-trypanosomatid folate pathway inhibitors |c Joanna Panecka-Hofman, Ina Pöhner, Francesca Spyrakis, Talia Zeppelin, Flavio Di Pisa, Lucia Dello Iacono, Alessio Bonucci, Antonio Quotadamo, Alberto Venturelli, Stefano Mangani, Maria Paola Costi, Rebecca C. Wade |
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| 520 | |a Background Multi-target approaches are necessary to properly analyze or modify the function of a biochemical pathway or a protein family. An example of such a problem is the repurposing of the known human anti-cancer drugs, antifolates, as selective anti-parasitic agents. This requires considering a set of experimentally validated protein targets in the folate pathway of major pathogenic trypanosomatid parasites and humans: (i) the primary parasite on-targets: pteridine reductase 1 (PTR1) (absent in humans) and bifunctional dihydrofolate reductase-thymidylate synthase (DHFR-TS), (ii) the primary off-targets: human DHFR and TS, and (iii) the secondary on-target: human folate receptor β, a folate/antifolate transporter. Methods we computationally compared the structural, dynamic and physico-chemical properties of the targets. We based our analysis on available inhibitory activity and crystallographic data, including a crystal structure of the bifunctional T. cruzi DHFR-TS with tetrahydrofolate bound determined in this work. Due to the low sequence and structural similarity of the targets analyzed, we employed a mapping of binding pockets based on the known common ligands, folate and methotrexate. Results Our analysis provides a set of practical strategies for the design of selective trypanosomatid folate pathway inhibitors, which are supported by enzyme inhibition measurements and crystallographic structures. Conclusions the ligand-based comparative computational mapping of protein binding pockets provides a basis for repurposing of anti-folates and the design of new anti-trypanosmatid agents. General significance apart from the target-based discovery of selective compounds, our approach may be also applied for protein engineering or analyzing evolutionary relationships in protein families. | ||
| 650 | 4 | |a Anti-parasitic drug | |
| 650 | 4 | |a Enzyme inhibitor | |
| 650 | 4 | |a Folate pathway | |
| 650 | 4 | |a Selective inhibition | |
| 650 | 4 | |a Structure-based drug design | |
| 650 | 4 | |a Trypanosomatids | |
| 700 | 1 | |a Wade, Rebecca C. |e VerfasserIn |0 (DE-588)102801774X |0 (DE-627)730136000 |0 (DE-576)276591402 |4 aut | |
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