Journal
PARASITOLOGY
Volume 131, Issue -, Pages 151-159Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0031182005007481
Keywords
Plasmodium yoelii; host heterogeneity; immune evasion; mathematical model
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The Py235 merozoite rhoptry protein of the rodent malaria agent Plasmodium (yoelii) yoeli is encoded by the Py235 multigene family whose members are transcribed during the parasite's asexual life-cycle in a fashion where single schizonts subsequently give rise to sets of merozoites containing distinct Py235 transcripts. Homologues of Py235 are found in other malaria species, and antibodies to both Py235 and P. falciparum homologues inhibit merozoite invasion, suggesting a unique survival strategy involving immune evasion and host adaptation. Using a mathematical approach to model this free-living stage of Plasinodium in interaction with specific antibodies and a heterogeneous red blood cell population, we investigate if, and under what conditions, this mechanism of clonal phenotypic variation can play a role in immune evasion and adaptation to a dynamic erythropoietic environment.
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