Immune Profiling Analysis of Double-negative T Cells in Patients with Systemic Sclerosis

Overview

Journal Clin Rheumatol

Publisher Springer

Specialty Rheumatology

Date 2024 Mar 4

PMID 38436769

Authors

Dongdong Zhang

Mihribangvl Alip

Hongzhen Chen

Dan Wu

Huimin Zhu

Yichen Han

Xinran Yuan

Xuebing Feng

Lingyun Sun

Dandan Wang

Affiliations

Soon will be listed here.

Abstract

Objective: To construct a molecular immune map of patients with systemic sclerosis (SSc) by mass flow cytometry, and compare the number and molecular expression of double-negative T (DNT) cell subsets between patients and healthy controls (HC).

Methods: Peripheral blood mononuclear cells (PBMCs) were extracted from the peripheral blood of 17 SSc patients and 9 HC. A 42-channel panel was set up to perform mass cytometry by time of flight (CyTOF) analysis for DNT subgroups. Flow cytometry was used to validate subpopulation functions. The clinical data of patients were collected for correlation analysis.

Results: Compared with HC, the number of total DNT cells decreased in SSc patients. Six DNT subsets were obtained from CyTOF analysis, in which the proportion of cluster1 increased, while the proportion of cluster3 decreased. Further analysis revealed that cluster1 was characterized by high expression of CD28 and CCR7, and cluster3 was characterized by high expression of CD28 and CCR5. After in vitro stimulation, cluster1 secreted more IL-4 and cluster3 secreted more IL-10 in SSc patients compared to HC. Clinical correlation analysis suggested that cluster1 may play a pathogenic role while cluster3 may play a protective role in SSc. ROC curve analysis further revealed that cluster3 may be a potential indicator for determining disease activity in SSc patients.

Conclusion: We found a new CCR5CD28 DNT cell subset, which played a protective role in the pathogenesis of SSc. Key Points • The number of DNT cells decreased in SSc patients' peripheral blood. • DNT cells do not infiltrate in the skin but secrete cytokines to participate in the pathogenesis of SSc. • A CCR5CD28 DNT cell population may play a protective role in SSc.

Citing Articles

Single-cell mass cytometry in immunological skin diseases.

Zhao M, Cheng Y, Gao J, Zhou F Front Immunol. 2024; 15:1401102.

PMID: 39081313 PMC: 11286489. DOI: 10.3389/fimmu.2024.1401102.

Regarding the double-negative T cells in patients with systemic sclerosis.

Zhang Q, Huang Y Clin Rheumatol. 2024; 43(7):2361.

PMID: 38739313 DOI: 10.1007/s10067-024-06989-2.

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