12 9

Cited 0 times in

Characteristics of Circulating CD4 + T Cell Subsets in Patients with Mycobacterium avium Complex Pulmonary Disease

Authors
 Sun Ae Han  ;  Yousang Ko  ;  Sung Jae Shin  ;  Byung Woo Jhun 
Citation
 JOURNAL OF CLINICAL MEDICINE, Vol.9(5) : 1331, 2020-05 
Journal Title
 JOURNAL OF CLINICAL MEDICINE 
Issue Date
2020-05
Keywords
CD4+ T cells ; Mycobacterium avium ; Mycobacterium avium complex ; Mycobacterium intracellulare ; Nontuberculous mycobacteria ; immunophenotype
Abstract
Although prevalence of Mycobacterium avium complex pulmonary disease (MAC-PD) is increasing, limited data are available regarding vulnerability to Mycobacterium avium complex (MAC) infections. To understand the pathobiology of interaction between MAC and host-immunity, it is important to understand the characteristics for circulating T cells in terms of the immunological phenotype and functional correlates in MAC-PD. We aimed to characterize immunophenotype, cytokine profile, and immune inhibitory receptors of circulating CD4+ T cells in MAC-PD patients. We enrolled 71 MAC-PD and 20 control individuals. Flow cytometric analysis was performed to determine T cell subsets and immune checkpoint markers. Ex vivo cytokine productions in response to MAC were determined using enzyme-linked immunosorbent assay. The frequencies of CD4+ T cells and CD4+IL-17+ T cells decreased, while CD4+IL-4+ T cells and CD4+CD25+Foxp3+ T cells increased in peripheral blood mononuclear cells (PBMCs) of MAC-PD individuals upon MAC stimulation compared with those cells in healthy donor-PBMCs. Additionally, we found increased PD-1, CTLA-4, and TIM-3-expressing T cells in MAC- PD individuals in response to MAC-stimulation, indicating that suppressed T cell-mediated response is associated with the susceptibility to MAC infection. These results may help to explain impaired T cell-mediated responses and pave the way for better strategies to achieve protective immunity against MAC infection.
Files in This Item:
T202002339.pdf Download
DOI
10.3390/jcm9051331
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실) > 1. Journal Papers
Yonsei Authors
Shin, Sung Jae(신성재) ORCID logo https://orcid.org/0000-0003-0854-4582
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179223
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links