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- W4313382839 abstract "Abstract Cerebral malaria (CM) is a severe complication arising from Plasmodium falciparum infection which results in high mortality. Lack of mechanistic insight into this pathology has resulted in ineffective therapeutic strategies. Using the Plasmodium berghei ANKA model of experimental cerebral malaria (ECM) our lab recapitulated hallmarks of human CM using small animal imaging, including blood-brain barrier (BBB) permeability, severe edema and microhemorrhage visible via T1 and T2-weighted MRI. Previously it had been demonstrated that infiltration of CD8 T cells with cytotoxic capacity is required to induce BBB permeability and ECM. The observation that not only infiltration, but cytotoxic killing is required provoked us to analyze differential MHC class I-restricted priming among discrete antigen presenting cell (APC) types. Using new MHC class I conditional knockout mice generated by our team, we addressed CD8 T cell priming and capacity to disrupt the BBB in ECM. Our findings revealed that mice lacking the H-2Kb MHC class I molecule expression in CD11c+ cells, but not LysM+ cells, were protected from the development of lethal ECM. Subsequently, conditional ablation of the H-2Db on these same subsets yielded similar results. Therefore, we demonstrate that both Db and Kb class I molecule expression by CD11c+ cells enable CD8 T cell priming that results in BBB permeability during ECM. In contrast, CD8 T cells primed by H-2Kb or H-2Db expressing LysM+ APCs are not capable of inducing BBB disruption. These results imply discrete APC subsets prime functionally distinct CD8 T cell responses in the CNS and modulate the outcome of cerebral malaria. This work begins to bridge the mechanistic gap and will impact future therapeutic strategies." @default.
- W4313382839 created "2023-01-06" @default.
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- W4313382839 date "2020-05-01" @default.
- W4313382839 modified "2023-09-25" @default.
- W4313382839 title "Conditional ablation of H-2Kb and H-2Db on discrete APC subsets modulate outcomes in experimental cerebral malaria" @default.
- W4313382839 doi "https://doi.org/10.4049/jimmunol.204.supp.82.13" @default.
- W4313382839 hasPublicationYear "2020" @default.
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