Human T-bet Governs Innate and Innate-like Adaptive IFN-γ Immunity against Mycobacteria.
Cell
; 183(7): 1826-1847.e31, 2020 12 23.
Article
in En
| MEDLINE
| ID: mdl-33296702
ABSTRACT
Inborn errors of human interferon gamma (IFN-γ) immunity underlie mycobacterial disease. We report a patient with mycobacterial disease due to inherited deficiency of the transcription factor T-bet. The patient has extremely low counts of circulating Mycobacterium-reactive natural killer (NK), invariant NKT (iNKT), mucosal-associated invariant T (MAIT), and Vδ2+ γδ T lymphocytes, and of Mycobacterium-non reactive classic TH1 lymphocytes, with the residual populations of these cells also producing abnormally small amounts of IFN-γ. Other lymphocyte subsets develop normally but produce low levels of IFN-γ, with the exception of CD8+ αß T and non-classic CD4+ αß TH1∗ lymphocytes, which produce IFN-γ normally in response to mycobacterial antigens. Human T-bet deficiency thus underlies mycobacterial disease by preventing the development of innate (NK) and innate-like adaptive lymphocytes (iNKT, MAIT, and Vδ2+ γδ T cells) and IFN-γ production by them, with mycobacterium-specific, IFN-γ-producing, purely adaptive CD8+ αß T, and CD4+ αß TH1∗ cells unable to compensate for this deficit.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Interferon-gamma
/
T-Box Domain Proteins
/
Adaptive Immunity
/
Immunity, Innate
/
Mycobacterium
Limits:
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Language:
En
Journal:
Cell
Year:
2020
Document type:
Article