Tuberculous pleurisy drives marked effector responses of γδ, CD4+, and CD8+ T cell subpopulations in humans. Issue 5 (8th July 2015)

• Record Type: Journal Article
• Authors: Zeng, Jincheng; Song, Zeqing; Cai, Xiaozhen; Huang, Su; Wang, Wandang; Zhu, Yanfen; Huang, Yinan; Kong, Bin; Xiang, Wenyu; Lin, Dongzi; Liu, Ganbin; Zhang, Junai; Chen, Crystal Y; Shen, Hongbo; Huang, Dan; Shen, Ling; Yi, Lailong; Xu, Junfa; Chen, Zheng W
• Is Part Of: Journal of leukocyte biology. Volume 98:Issue 5(2015)
• Page Start: 851
• Page End: 857
• Publication Date: 2015-07-08
• Subjects: human Vγ2Vδ2 T cells -- Foxp3+ Treg -- Mycobacterium tuberculosis -- Th1 -- Th22; Leucocytes -- Periodicals; Reticulo-endothelial system -- Periodicals; 571.96
• DOI: 10.1189/jlb.4A0814-398RR
• Languages: English
• ISSNs: 0741-5400

Abstract

Abstract : Over-reactive effector responses of γδ T and αβ T cells, and their interrelation with Foxp3 + Treg in pleural and other compartments. Abstract: Although tuberculous pleurisy (TP) presumably involves a hypersensitivity reaction, there is limited evidence indicating overreactive effector responses of γδ T cells and αβ T cells and their interrelation with Foxp3 + Tregs in pleural and other compartments. We found that TP induced reciprocal representations of Foxp3 + Tregs and Mtb phosphoantigen-specific Vγ2Vδ2 T cells in different anatomic compartments. Patients with TP exhibited appreciable numbers of "proliferating" Ki-67 + Vγ2Vδ2 T cells in the airway where Foxp3 + Tregs were not dominant, whereas striking increases in Foxp3 + Tregs in the blood and pleural compartments coincided with low frequencies of Vγ2Vδ2 T cells. Interestingly, anti-tuberculosis chemotherapy control of Mtb infection in patients with TP reversed reciprocal representations of Foxp3 + Tregs and proliferating Vγ2Vδ2 T cells. Surprisingly, despite high-level Foxp3 + Tregs, TP appeared to drive overreactive responses of IFN-γ-producing Vγ2Vδ2, CD4 + CD25 +, and CD8 + CD25 + T effector subpopulations, whereas IL-22-producing Vγ2Vδ2 T cells increased subtly. Th1 effector responses were sustained despite remarkable declines in Foxp3 + Tregs at 1 mo after the treatment. Overreactive T effector responses of Mtb-reactive γδ T cells, αβ CD25 + CD4 +, and CD25 + CD8 + T cell subpopulations appear to be immune features for TP. Increased Foxp3 + Tregs might be responsive to overreactive TP but unable to influence T effector responses despite having an inverse relation with proliferating Vγ2Vδ2 T cells.