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© Christine Schmitt, Sophie Goyard, Jean-Marc Panaud
Trypanosoma vivax - forme sanguine. Responsable de la trypanosomose animale ou Nagana.
Publication : International journal for parasitology. Drugs and drug resistance

Target-based vs. phenotypic screenings in Leishmania drug discovery: A marriage of convenience or a dialogue of the deaf?

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in International journal for parasitology. Drugs and drug resistance - 22 May 2014

Reguera RM, Calvo-Álvarez E, Alvarez-Velilla R, Balaña-Fouce R

Link to Pubmed [PMID] – 25516847

Int J Parasitol Drugs Drug Resist 2014 Dec;4(3):355-7

Drug discovery programs sponsored by public or private initiatives pursue the same ambitious goal: a crushing defeat of major Neglected Tropical Diseases (NTDs) during this decade. Both target-based and target-free screenings have pros and cons when it comes to finding potential small-molecule leads among chemical libraries consisting of myriads of compounds. Within the target-based strategy, crystals of pathogen recombinant-proteins are being used to obtain three-dimensional (3D) structures in silico for the discovery of structure-based inhibitors. On the other hand, genetically modified parasites expressing easily detectable reporters are in the pipeline of target-free (phenotypic) screenings. Furthermore, lead compounds can be scaled up to in vivo preclinical trials using rodent models of infection monitoring parasite loads by means of cutting-edge bioimaging devices. As such, those preferred are fluorescent and bioluminescent readouts due to their reproducibility and rapidity, which reduces the number of animals used in the trials and allows for an earlier stage detection of the infective process as compared with classical methods. In this review, we focus on the current differences between target-based and phenotypic screenings in Leishmania, as an approach that leads to the discovery of new potential drugs against leishmaniasis.

http://www.ncbi.nlm.nih.gov/pubmed/25516847