Abstract
This chapter describes, in detail, the method our laboratory developed to differentiate L. donovani promastigotes into amastigotes in a host-free culture. This method is based on previous observations that Leishmania promastigotes can combine two environmental signals, typical to lysosomes, acidic pH (~5.5) and body temperature (37 °C), into a signal that induces differentiation. Based on this concept, we have modified medium 199 to make it into an amastigote-specific medium. Shifting promastigotes to this medium, followed by incubation in a CO2 incubator, induced differentiation. Axenic amastigotes reach maturation within 5 days, resembling the time it takes in vivo. This chapter provides a complete protocol that should be useful for both Old and New World species of Leishmania.
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Zilberstein, D., Nitzan Koren, R. (2019). Host-Free Systems for Differentiation of Axenic Leishmania. In: Clos, J. (eds) Leishmania. Methods in Molecular Biology, vol 1971. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-9210-2_1
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DOI: https://doi.org/10.1007/978-1-4939-9210-2_1
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