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Lutzky VP, Ratnatunga CN, Smith DJ, Kupz A, Doolan DL, Reid DW, Thomson RM, Bell SC, Miles JJ. Anomalies in T Cell Function Are Associated With Individuals at Risk of Mycobacterium abscessus Complex Infection. Front Immunol 2018; 9:1319. [PMID: 29942313 PMCID: PMC6004551 DOI: 10.3389/fimmu.2018.01319] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 05/28/2018] [Indexed: 12/13/2022] Open
Abstract
The increasing global incidence and prevalence of non-tuberculous mycobacteria (NTM) infection is of growing concern. New evidence of person-to-person transmission of multidrug-resistant NTM adds to the global concern. The reason why certain individuals are at risk of NTM infections is unknown. Using high definition flow cytometry, we studied the immune profiles of two groups that are at risk of Mycobacterium abscessus complex infection and matched controls. The first group was cystic fibrosis (CF) patients and the second group was elderly individuals. CF individuals with active M. abscessus complex infection or a history of M. abscessus complex infection exhibited a unique surface T cell phenotype with a marked global deficiency in TNFα production during mitogen stimulation. Importantly, immune-based signatures were identified that appeared to predict at baseline the subset of CF individuals who were at risk of M. abscessus complex infection. In contrast, elderly individuals with M. abscessus complex infection exhibited a separate T cell phenotype underlined by the presence of exhaustion markers and dysregulation in type 1 cytokine release during mitogen stimulation. Collectively, these data suggest an association between T cell signatures and individuals at risk of M. abscessus complex infection, however, validation of these immune anomalies as robust biomarkers will require analysis on larger patient cohorts.
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Affiliation(s)
- Viviana P Lutzky
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Champa N Ratnatunga
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Centre for Biodiscovery and Molecular Development of Therapeutics, Centre for Biosecurity and Tropical Infectious Diseases, AITHM, James Cook University, Cairns, QLD, Australia.,Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Daniel J Smith
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Andreas Kupz
- Centre for Biodiscovery and Molecular Development of Therapeutics, Centre for Biosecurity and Tropical Infectious Diseases, AITHM, James Cook University, Cairns, QLD, Australia
| | - Denise L Doolan
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Centre for Biodiscovery and Molecular Development of Therapeutics, Centre for Biosecurity and Tropical Infectious Diseases, AITHM, James Cook University, Cairns, QLD, Australia
| | - David W Reid
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Rachel M Thomson
- Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia.,Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia.,Gallipoli Medical Research Institute, Brisbane, QLD, Australia
| | - Scott C Bell
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia.,Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - John J Miles
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,Centre for Biodiscovery and Molecular Development of Therapeutics, Centre for Biosecurity and Tropical Infectious Diseases, AITHM, James Cook University, Cairns, QLD, Australia.,Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia.,Institute of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
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