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Type I Interferon in Malaria: A Balancing Act
Jason Paul Mooney1, Samuel Crocodile Wassmer1, Julius Clemence Hafalla1
1Immunology and Infection Department, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK.
Trends in Parasitology
|January 18, 2017
Summary
Type I interferons (IFN-Is) balance malaria protection by dampening inflammation and regulating immune cells. Plasmacytoid dendritic cells are key producers of these crucial interferons during infection.
Area of Science:
- Immunology
- Infectious Diseases
- Malariology
Background:
- Type I interferons (IFN-Is) play a critical role in modulating immune responses during malaria.
- IFN-Is are increasingly recognized for their dual role in balancing protective immunity and pathology.
Purpose of the Study:
- To elucidate the immunoregulatory mechanisms of IFN-Is during the blood stage of malaria.
- To model how IFN-Is orchestrate immune responses, including Treg cell expansion and humoral immunity restriction.
Main Methods:
- Integration of recent findings on IFN-I function in malaria.
- Development of a mechanistic model for IFN-I-mediated immune regulation.
Main Results:
- IFN-Is orchestrate an immunoregulatory network that dampens proinflammatory responses.
- IFN-Is promote the expansion of type 1 regulatory (Tr1) cells.
- IFN-Is restrict humoral immunity during blood-stage malaria.
- Plasmacytoid dendritic cells (pDCs) are identified as the primary source of IFN-Is.
Conclusions:
- IFN-Is act as a critical balancing factor for clinical protection against malaria.
- Understanding the role of pDCs and IFN-Is provides insights into novel therapeutic strategies for malaria.
