Journal
NATURE REVIEWS IMMUNOLOGY
Volume 19, Issue 6, Pages 398-410Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41577-019-0145-4
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Funding
- National Institutes of Health (NIH)
- Commonwealth of Pennsylvania
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The identification of T-bet as a key transcription factor associated with the development of IFN gamma-producing CD4(+) T cells predicted a crucial role for T-bet in cell-mediated immunity and in resistance to many intracellular infections. This idea was reinforced by initial reports showing that T-bet-deficient mice were more susceptible to pathogens that survived within the lysosomal system of macrophages. However, subsequent studies revealed IFN gamma-dependent, T-bet-independent pathways of resistance to diverse classes of microorganisms that occupy other intracellular niches. Consequently, a more complex picture has emerged of how T-bet and the related transcription factor eomesodermin (EOMES) coordinate many facets of the immune response to bona fide pathogens as well as commensals. This article provides an overview of the discovery and evolutionary relationship between T-bet and EOMES and highlights the studies that have uncovered broader functions of T-bet in innate and adaptive immunity and in the development of the effector and memory T cell populations that mediate long-term resistance to infection.
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