Controlled Human Malaria Infection Leads to Long-Lasting Changes in Innate and Innate-like Lymphocyte Populations.

Details

Serval ID
serval:BIB_F872E86AA7F8
Type
Article: article from journal or magazin.
Collection
Publications
Title
Controlled Human Malaria Infection Leads to Long-Lasting Changes in Innate and Innate-like Lymphocyte Populations.
Journal
Journal of immunology
Author(s)
Mpina M., Maurice N.J., Yajima M., Slichter C.K., Miller H.W., Dutta M., McElrath M.J., Stuart K.D., De Rosa S.C., McNevin J.P., Linsley P.S., Abdulla S., Tanner M., Hoffman S.L., Gottardo R., Daubenberger C.A., Prlic M.
ISSN
1550-6606 (Electronic)
ISSN-L
0022-1767
Publication state
Published
Issued date
01/07/2017
Peer-reviewed
Oui
Volume
199
Number
1
Pages
107-118
Language
english
Notes
Publication types: Journal Article ; Randomized Controlled Trial ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Animal model studies highlight the role of innate-like lymphocyte populations in the early inflammatory response and subsequent parasite control following Plasmodium infection. IFN-γ production by these lymphocytes likely plays a key role in the early control of the parasite and disease severity. Analyzing human innate-like T cell and NK cell responses following infection with Plasmodium has been challenging because the early stages of infection are clinically silent. To overcome this limitation, we examined blood samples from a controlled human malaria infection (CHMI) study in a Tanzanian cohort, in which volunteers underwent CHMI with a low or high dose of Plasmodium falciparum sporozoites. The CHMI differentially affected NK, NKT (invariant NKT), and mucosal-associated invariant T cell populations in a dose-dependent manner, resulting in an altered composition of this innate-like lymphocyte compartment. Although these innate-like responses are typically thought of as short-lived, we found that changes persisted for months after the infection was cleared, leading to significantly increased frequencies of mucosal-associated invariant T cells 6 mo postinfection. We used single-cell RNA sequencing and TCR αβ-chain usage analysis to define potential mechanisms for this expansion. These single-cell data suggest that this increase was mediated by homeostatic expansion-like mechanisms. Together, these data demonstrate that CHMI leads to previously unappreciated long-lasting alterations in the human innate-like lymphocyte compartment. We discuss the consequences of these changes for recurrent parasite infection and infection-associated pathologies and highlight the importance of considering host immunity and infection history for vaccine design.
Keywords
Adult, Host-Pathogen Interactions, Humans, Immunity, Innate, Immunity, Mucosal, Interferon-gamma/immunology, Killer Cells, Natural/immunology, Lymphocyte Subsets/immunology, Malaria Vaccines, Malaria, Falciparum/immunology, Malaria, Falciparum/parasitology, Male, Mucosal-Associated Invariant T Cells/immunology, Parasitemia/immunology, Plasmodium falciparum/immunology, Plasmodium falciparum/physiology, Sporozoites/immunology, Tanzania, Time Factors, Young Adult
Pubmed
Web of science
Open Access
Yes
Create date
28/02/2022 12:45
Last modification date
23/03/2024 8:24
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