Browsing by Author "Vijayan, Kamalakannan"

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    A Molecular Signature in Blood Reveals a Role for p53 in Regulating Malaria-Induced Inflammation
    (Elsevier, 2019-10-15) Tran, Tuan M.; Guha, Rajan; Portugal, Silvia; Skinner, Jeff; Ongoiba, Aissata; Bhardwaj, Jyoti; Jones, Marcus; Moebius, Jacqueline; Venepally, Pratap; Doumbo, Safiatou; DeRiso, Elizabeth A.; Li, Shanping; Vijayan, Kamalakannan; Anzick, Sarah L.; Hart, Geoffrey T.; O’Connell, Elise M.; Doumbo, Ogobara K.; Kaushansky, Alexis; Alter, Galit; Felgner, Phillip L.; Lorenzi, Hernan; Kayentao, Kassoum; Traore, Boubacar; Kirkness, Ewen F.; Crompton, Peter D.; Medicine, School of Medicine
    Immunity that controls parasitemia and inflammation during Plasmodium falciparum (Pf) malaria can be acquired with repeated infections. A limited understanding of this complex immune response impedes the development of vaccines and adjunctive therapies. We conducted a prospective systems biology study of children who differed in their ability to control parasitemia and fever following Pf infection. By integrating whole-blood transcriptomics, flow-cytometric analysis, and plasma cytokine and antibody profiles, we demonstrate that a pre-infection signature of B cell enrichment; upregulation of T-helper type 1 (Th1) and Th2 cell-associated pathways, including interferon responses; and p53 activation associated with control of malarial fever and coordinated with Pf-specific IgG and Fc receptor activation to control parasitemia. Our hypothesis-generating approach identified host molecules that may contribute to differential clinical outcomes during Pf infection. As a proof of concept, we have shown that enhanced p53 expression in monocytes attenuated Plasmodium-induced inflammation and predicted protection from fever.