Davis RE, Thalhofer CJ and Wilson ME
Infection and Activation of Human Neutrophils with Fluorescent Leishmania infantum
Neutrophils (PMNs) are recruited in high numbers to sites of host infection by the protozoan parasites of the genus Leishmania. Although PMNs are capable of phagocytizing Leishmania parasites and are potent producers of antimicrobial compounds including reactive oxygen species (ROS), they are unable to control the establishment of infection. Prior studies document production of ROS in isolated PMNs incubated with Leishmania under conditions allowing phagocytosis, however without a measure of single cells’ responses it cannot be discerned whether PMN activation and ROS production is suppressed or ineffective in the cells that internalize the parasite. To address these interactions, we engineered a strain of fluorescent, mCherry-expressing Leishmania infantum (mCherry-Li).
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