Abstract

Multi-target drugs have raised considerable interest in the last decade owing to their advantages in the treatment of complex diseases and health conditions linked to drug resistance issues. Prospective drug repositioning to treat comorbid conditions is an additional, overlooked application of multi-target ligands. While medicinal chemists usually rely on some version of the lock and key paradigm to design novel therapeutics, modern pharmacology recognizes that the mid- and long-term effects of a given drug on a biological system may depend not only on the specific ligand-target recognition events but also on the influence of the repeated administration of a drug on the cell gene signature. The design of multi-target agents usually imposes challenging restrictions on the topology or flexibility of the candidate drugs, which are briefly discussed in the present article. Finally, computational strategies to approach the identification of novel multi-target agents are overviewed.

Highlights

  • Alan Talevi*Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina

  • Multi-target drugs have attracted considerable attention in the last decade, as potential therapeutic solutions to diseases of complex etiology (Talevi et al, 2012; Koerberle and Werz, 2014; Zheng et al, 2014) and health conditions linked to drugresistance issues (Talevi and Bruno-Blanch, 2013; Li et al, 2014)

  • Medicinal chemists usually resort to the traditional lock and key model to describe the interaction between a ligand and its molecular target

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Summary

Alan Talevi*

Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina. Specialty section: This article was submitted to Experimental Pharmacology and Drug. Prospective drug repositioning to treat comorbid conditions is an additional, overlooked application of multi-target ligands. While medicinal chemists usually rely on some version of the lock and key paradigm to design novel therapeutics, modern pharmacology recognizes that the mid- and long-term effects of a given drug on a biological system may depend on the specific ligand-target recognition events and on the influence of the repeated administration of a drug on the cell gene signature. The design of multi-target agents usually imposes challenging restrictions on the topology or flexibility of the candidate drugs, which are briefly discussed in the present article.

Introduction
Revisiting and Squeezing the Classical Lock and Key Paradigm
Target Selection
Conclusion

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