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O'Brien JA, McGuire HM, Shinko D, Fazekas de St Groth B, Russo MA, Bailey D, Santarelli DM, Wynne K, Austin PJ. T lymphocyte and monocyte subsets are dysregulated in type 1 diabetes patients with peripheral neuropathic pain. Brain Behav Immun Health 2021; 15:100283. [PMID: 34589782 PMCID: PMC8474166 DOI: 10.1016/j.bbih.2021.100283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/31/2021] [Accepted: 06/04/2021] [Indexed: 12/19/2022] Open
Abstract
Diabetic neuropathic pain is a common and devastating complication of type 1 diabetes, but the mechanism by which it develops and persists is yet to be fully elucidated. This study utilised high-dimensional suspension mass cytometry in a pilot cohort to investigate differences in peripheral blood immunophenotypes between type 1 diabetes patients with (n = 9) and without (n = 9) peripheral neuropathic pain. The abundance and activation of several leukocyte subsets were investigated with unsupervised clustering approaches FlowSOM and SPADE, as well as by manual gating. Major findings included a proportional increase in CD4+ central memory T cells and an absolute increase in classical monocytes, non-classical monocytes, and mature natural killer cells in type 1 diabetes patients with pain compared to those without pain. The expression of CD27, CD127, and CD39 was upregulated on select T cell populations, and the phosphorylated form of pro-inflammatory transcription factor MK2 was upregulated across most populations. These results provide evidence that distinct immunological signatures are associated with painful neuropathy in type 1 diabetes patients. Further research may link these changes to mechanisms by which pain in type 1 diabetes is initiated and maintained, paving the way for much needed targeted treatments.
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Affiliation(s)
- Jayden A. O'Brien
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Brain and Mind Centre, 94 Mallett St, Camperdown, NSW, 2050, Australia
| | - Helen M. McGuire
- Discipline of Pathology, Faculty of Medicine and Health, The University of Sydney, NSW, Australia
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
| | - Diana Shinko
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
- Sydney Cytometry, The University of Sydney, NSW, Australia
| | - Barbara Fazekas de St Groth
- Discipline of Pathology, Faculty of Medicine and Health, The University of Sydney, NSW, Australia
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
| | - Marc A. Russo
- Genesis Research Services, Broadmeadow, NSW, Australia
| | - Dominic Bailey
- Genesis Research Services, Broadmeadow, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | | | - Katie Wynne
- Department of Diabetes and Endocrinology, John Hunter Hospital, Newcastle, NSW, Australia
- School of Medicine and Public Health, University of Newcastle, NSW, Australia
| | - Paul J. Austin
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Brain and Mind Centre, 94 Mallett St, Camperdown, NSW, 2050, Australia
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Becker MW, Simonovich JA, Phelps EA. Engineered microenvironments and microdevices for modeling the pathophysiology of type 1 diabetes. Biomaterials 2019; 198:49-62. [DOI: 10.1016/j.biomaterials.2018.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 06/21/2018] [Accepted: 07/01/2018] [Indexed: 01/09/2023]
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