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2017 ; 7
(1
): 11948
Nephropedia Template TP
gab.com Text
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English Wikipedia
Circulating Mycobacterium tuberculosis DosR latency antigen-specific,
polyfunctional, regulatory IL10(+) Th17 CD4 T-cells differentiate latent from
active tuberculosis
#MMPMID28931830
Rakshit S
; Adiga V
; Nayak S
; Sahoo PN
; Sharma PK
; van Meijgaarden KE
; Uk J AJ
; Dhar C
; Souza GD
; Finak G
; De Rosa SC
; Ottenhoff THM
; Vyakarnam A
Sci Rep
2017[Sep]; 7
(1
): 11948
PMID28931830
show ga
The functional heterogeneity of T cell responses to diverse antigens expressed at
different stages of Mycobacterium tuberculosis (Mtb) infection, in particular
early secreted versus dormancy related latency antigens expressed later, that
distinguish subjects with latent (LTBI), pulmonary (PTB) or extrapulmonary (EPTB)
tuberculosis remains unclear. Here we show blood central memory CD4 T-cell
responses specific to Mtb dormancy related (DosR) latency, but not classical
immunodominant secretory antigens, to clearly differentiate LTBI from EPTB and
PTB. The polyfunctionality score integrating up to 31 DosR-specific CD4 T-cell
functional profiles was significantly higher in LTBI than EPTB or PTB subjects.
Further analysis of 256 DosR-specific T-cell functional profiles identified
regulatory IL10?(+)?Th17 cells (IL10(+)IL17A(+)IL17F(+)IL22(+)) to be
significantly enriched in LTBI; in contrast to pro-inflammatory Th17 cells
(IFN?(+)IL17A(+)/IL10(-)) in the blood and lung of EPTB and PTB subjects
respectively. A blood polyfunctional, Mtb DosR latency antigen specific,
regulatory, central memory response is therefore a novel functional component of
T-cell immunity in latent TB and potential correlate of protection.