Journal
MUCOSAL IMMUNOLOGY
Volume 14, Issue 2, Pages 491-499Publisher
ELSEVIER SCIENCE INC
DOI: 10.1038/s41385-020-0322-6
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Funding
- National Institutes of Health (NIH) [U01AI115940, R21AI148027]
- Francis Crick Institute from Cancer Research UK [FC00110218]
- Wellcome trust [FC00110218, 104803, 203135]
- UK Medical Research Council [FC00110218]
- NIH [U01AI115940, U01AI111276]
- Medical Research Council of South Africa (SHIP)
- European and Developing Countries Clinical Trials Partnership (EDCTP) programme under the European Union's Horizon 2020 programme [TMA2017SF-1951/TB-Spec]
- Harry Crossley Senior Clinical Fellowship
- Intramural Research Program of the National Institute of Allergy and Infectious Diseases at the NIH
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Recent data suggests that CD153 plays a crucial role in controlling Mycobacterium tuberculosis, showing reduced expression in active TB patients compared to latently infected individuals. The expression of CD153 on Mtb-specific CD4 T cells inversely correlates with lung bacterial load and can be partially restored by antitubercular treatment, indicating its potential as a marker for evaluating TB vaccine efficacy in humans.
Recent data from mice and non-human primate models of tuberculosis suggested that CD153, a TNF super family member, plays an important role inMycobacterium tuberculosis(Mtb) control. However, this molecule has not been comprehensively evaluated in humans. Here, we show that the proportion of Mtb-specific CD4 T cells expressing CD153 was significantly reduced in active TB patients compared to latently infected persons. Importantly, the CD153+ Mtb-specific CD4 response inversely correlated with lung bacterial load, inferred by Xpert cycle threshold, irrespective of HIV status. Antitubercular treatment partially restored CD153 expression on Mtb-specific CD4 T cells. This is the first report of a subset of Mtb-specific CD4 T cells showing strong negative correlation with bacterial burden. Building on substantial evidence from animal models implicating CD153 as a mediator of host protection, our findings suggest it may play a similar role in humans and its measurement may be useful to evaluate TB vaccine efficacy.
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