Mucosal-associated Invariant T-Cell Function Is Modulated by Programmed Death-1 Signaling in Patients with Active Tuberculosis.
RATIONALE: Mucosal-associated invariant T (MAIT) cells have been proven to play an important role in host defense against mycobacterial infection in animal infection models; however, the functional role of MAIT cells in patients with active tuberculosis (TB) is still largely unknown. OBJECTIVES: To...
| Published in: | American Journal of Respiratory & Critical Care Medicine Vol. 190; no. 3; pp. 329 - 340 |
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| Main Authors: | , , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Oxford University Press / USA
8/1/2014
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103979353&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103979353 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 1073449X 1FG jtl: American Journal of Respiratory & Critical Care Medicine issn: 1073449X maglogo: N pubinfo: dt: 8/1/2014 vid: 190 iid: 3 pid: 622 pub: Oxford University Press / USA artinfo: ui: 103979353 103979353 2012668311 10.1164/rccm.201401-0106OC NLM24977786 103979353 ppf: 329 ppct: 11 formats: tig: atl: Mucosal-associated Invariant T-Cell Function Is Modulated by Programmed Death-1 Signaling in Patients with Active Tuberculosis. aug: au: Jiang, Jing Wang, Xinjing An, Hongjuan Yang, Bingfen Cao, Zhihong Liu, Yanhua Su, Jinwen Zhai, Fei Wang, Ruo Zhang, Guangyu Cheng, Xiaoxing affil: Key Laboratory of Tuberculosis Prevention and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China. sug: subj: Apoptosis Immunology T Lymphocytes Immunology Tuberculosis Immunology Adult Case Control Studies Female Flow Cytometry Human Immunity Male Peritonitis Immunology Nonparametric Statistics Tuberculosis, Pulmonary Immunology Adult: 19-44 years Female Male ab: RATIONALE: Mucosal-associated invariant T (MAIT) cells have been proven to play an important role in host defense against mycobacterial infection in animal infection models; however, the functional role of MAIT cells in patients with active tuberculosis (TB) is still largely unknown. OBJECTIVES: To understand the clinical features and functions of MAIT cells in patients with active TB. METHODS: MAIT cells were analyzed in patients with pulmonary TB, tuberculous pleurisy, and tuberculous peritonitis by flow cytometry. The functions of MAIT cells were compared between patients with active TB and healthy control subjects. MEASUREMENTS AND MAIN RESULTS: The frequency of MAIT cells was significantly reduced both in peripheral blood from patients with active pulmonary TB (P < 0.0001) and in tuberculous pleural effusions compared with healthy control subjects but not in ascitic fluids from patients with tuberculous peritonitis. A comparison of bacillus Calmette-Guérin (BCG)-stimulated cytokine production showed that patients with active TB had significantly higher production of IFN-[gamma] (P = 0.0034) and tumor necrosis factor (TNF)-[alpha] (P = 0.0399) compared with healthy control subjects. In contrast, when MAIT cells were stimulated with Escherichia coli, patients with active TB had significantly lower production of IFN-[gamma] (P = 0.0007) and TNF-[alpha] (P = 0.0032). MAIT cells in patients with active TB exhibited elevated expression of programmed death-1 (PD-1) (P = 0.0015), and blockade of PD-1 signaling resulted in a significantly higher frequency of BCG-stimulated IFN-[gamma] production in MAIT cells (P = 0.0178). CONCLUSIONS: MAIT-cell immune response to antigen stimulation in patients with active TB is regulated by PD-1, which could be a potential target for TB immunotherapy. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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