1. CD4 + CXCR4 + T cells as a novel prognostic biomarker in patients with idiopathic inflammatory myopathy-associated interstitial lung disease.
- Author
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Wang, Kaiwen, Zhao, Jiangfeng, Chen, Zhiwei, Li, Ting, Tan, Xiaoming, Zheng, Yu, Gu, Liyang, Guo, Li, Sun, Fangfang, Wang, Haiting, Li, Jiajie, Wang, Xiaodong, Riemekasten, Gabriela, and Ye, Shuang
- Subjects
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CELL proliferation , *AUTOANTIBODIES , *BIOMARKERS , *CELL receptors , *CELLULAR signal transduction , *COMPUTED tomography , *CYTOKINES , *FIBROBLASTS , *INTERLEUKINS , *INTERSTITIAL lung diseases , *LUNGS , *MEDICAL needs assessment , *MYOSITIS , *NEUROTRANSMITTER uptake inhibitors , *RESPIRATORY measurements , *SURVIVAL analysis (Biometry) , *T cells , *CD4 antigen , *PHENOTYPES , *SEVERITY of illness index , *GENE expression profiling , *IN vitro studies , *JANUS kinases , *BLOOD , *DISEASE complications , *PROGNOSIS - Abstract
Backgroud There is an unmet need for the development of new biomarkers for idiopathic inflammatory myopathy-associated interstitial lung disease (IIM-ILD). Methods Peripheral CD4+CXCR4+ T cells, stromal cell-derived factor-1 and Krebs von den Lungen-6 were measured in patients with IIM-ILD (n = 85) and controls. The relation to pulmonary functions, high-resolution CT scores, specific clinical phenotypes and survival was analysed. Cytokine-expression profiling of these CD4+CXCR4+ T cells and their co-culture with pulmonary fibroblasts were conducted. Results The peripheral percentages of CD4+CXCR4+ T cells were significantly elevated in IIM-ILD patients, and correlated with high-resolution CT score (r = 0.7136, P < 0.0001) and pulmonary function impairments, such as percentage of forced volume vital capacity (r = −0.4734, P = 0.0005). They were associated with anti-melanoma differentiation-associated gene 5 autoantibodies and the amyopathic DM phenotype. In IIM-ILD, peripheral percentages of CD4+CXCR4+ T cells ⩾30% revealed a 6-month mortality as high as 47%. These CD4+CXCR4+ T cells express high levels of IL-21 and IL-6. In vitro blockade of IL-21 signalling by neutralization of IL-21 or Janus kinase inhibitor could abolished the fibroblast proliferation. Conclusion Overall, peripheral CD4+CXCR4+ T cells appear to be a potentially valuable novel biomarker associated with the severity and prognosis of IIM-ILD. They promote pulmonary fibroblast proliferation via IL-21, which may herald future targeted treatments for this severe disease. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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