Cerebral malaria is regulated by host mediated changes in Plasmodium gene expression
Cimperman, C.; Pena, M.; Gokcek, S.; Theall, B.; Patel, M.; Sharma, A.; Qi, C.; Sturdevant, D.; Miller, L.; Collins, P.; Pierce, S.; Akkaya, M.
Show abstract
Cerebral Malaria (CM), the deadliest complication of Plasmodium infection, is a complex and unpredictable disease. However, our understanding of the host and parasite factors that cause CM is limited. Using a mouse model of CM, experimental CM (ECM), we performed a three-way comparison between: ECM susceptible C57BL/6 mice infected with ECM-causing Plasmodium ANKA (Pb ANKA) parasites (ANKA(C57BL/6)); ECM resistant Balb/c mice infected with Pb ANKA (ANKA(Balb/c)); and C57BL/6 mice infected with Pb NK65 that does not cause ECM (NK65(C57BL/6)). All ANKA(C57BL/6) mice developed CM. In contrast in ANKA(Balb/c) and NK65(C57BL/6) infections do not result in CM and proceed similarly in terms of parasite growth, disease course and host immune response.. However, parasite gene expression in (ANKA(C57BL/6)) was remarkably different than in ANKA(Balb/c) but similar to the gene expression in NK65(C57BL/6). Thus, Pb ANKA has a ECM-specific gene expression profile that is only activated in susceptible hosts providing evidence that the host has a critical influence on the outcome of infection.
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