alexa Generation of stable L. major(+EGFP-LUC) and simultaneous comparison between EGFP and luciferase sensitivity.
Microbiology

Microbiology

Journal of Microbial & Biochemical Technology

Author(s): Taheri T, Saberi Nik H, Seyed N, Doustdari F, Etemadzadeh MH, , Taheri T, Saberi Nik H, Seyed N, Doustdari F, Etemadzadeh MH,

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Abstract Because of the lack of an accurate and sensitive tool to evaluate the parasitemia level, treatment or prevention of leishmaniasis remains an important challenge worldwide. To monitor and track leishmanial infection by two parameters in real time, we generated stably transgenic Leishmania that express a bi-reporter protein as fused EGFP and firefly luciferase. Using two reporter genes (egfp-luc) simultaneously increases the experimental sensitivity for detection/diagnosis, and in vitro quantification of parasites as well as real-time infection in mice. Through different specific tools, EGFP and LUC signals from the parasite were detectable and measurable within a mammalian host and promastigotes. Here, the LUC protein provided a higher level of sensitivity than did EGFP, so that infection was detectable at an earlier stage of the disease in the footpad (injection site) and lymph nodes by bioluminescence. These results depicted that: (1) both quantitative reporter genes, EGFP and LUC, could be simultaneously used to detect parasitemia in vitro and in vivo and (2) sensitivity of firefly luciferase was 10-fold higher than that of EGFP in promastigotes. Copyright © 2015 Elsevier Inc. All rights reserved. This article was published in Exp Parasitol and referenced in Journal of Microbial & Biochemical Technology

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