Objectives: This study aimed to investigate the expression levels of T-cell immune response cDNA 7 (TIRC7) in immune thrombocytopenia (ITP) patients before and after high-dose dexamethasone (HD-DXM) treatment.
Methods: Forty-four patients with ITP were enrolled and received dexamethasone (40 mg/day) for 4 consecutive days. Patients who had platelet counts more than 50 × 10(9)/l or less were defined as responders or non-responders, respectively. Quantitative polymerase chain reaction and enzyme-linked immunosorbent assay were used to measure RNA level and plasma level of TIRC7, respectively.
Results: TIRC7 levels (RNA and plasma level) were significantly higher in ITP than that in control (P < 0.0001). However, after treatment, TIRC7 levels were significantly decreased in responders (P < 0.0001) but not in non-responders (P > 0.05).
Discussions: TIRC7 might be associated with the pathogenesis of ITP, and TIRC7 levels could be used as an indicator to evaluate patients' response to HD-DXM treatment.
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http://dx.doi.org/10.1179/1607845414Y.0000000156 | DOI Listing |
Front Immunol
April 2022
Institute for Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany.
A subset of T regulatory cells (Tregs), identified by TIRC7 (T cell immune response cDNA 7) expression is designated as Immune Regulatory 1 Cells (IR1 cells). TIRC7 is an immune checkpoint inhibitor, co-localized with the T- cell receptor, HLA-DR and CTLA-4 during T-cell activation, which delivers regulatory signals binding to its ligand, HLA-DR 2 domain. IR1 cells express FOXP3, and multiple other markers associated with immune suppression.
View Article and Find Full Text PDFCancers (Basel)
December 2021
Institute of Pathology, Heidelberg University Hospital, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany.
Cholangiocarcinoma (CCA) is a heterogeneous malignancy with a dismal prognosis. Therapeutic options are largely limited to surgery and conventional chemotherapy offers limited benefit. As immunotherapy has proven highly effective in various cancer types, we have undertaken a quantitative immunohistopathological assessment of immune cells expressing the immunoinhibitory T cell immune response cDNA 7 receptor (TIRC7), an emerging immunoinhibitory receptor, in a cohort of 135 CCA patients.
View Article and Find Full Text PDFOncol Rep
July 2020
Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.
In a previous study, it was demonstrated that T‑cell immune response cDNA 7 (TIRC7) levels reflect the efficacy of treatment of patients with acute graft‑versus‑host disease (GVHD). However, the pathogenesis of TIRC7 in acute GVHD remains poorly understood. Lymphocytes from patients with acute GVHD were selected as targeT cells, and the effects of TIRC7 on cytotoxic T lymphocyte antigen‑4 (CTLA‑4), T cell activation and cytokine secretion were observed by electroporation.
View Article and Find Full Text PDFThromb Res
October 2015
Department of Hematology, the Affiliated Hospital of Xuzhou Medical College, Jiangsu Province, 221002, China. Electronic address:
Introduction: Previously, we demonstrated the importance of T-cell immune response cDNA 7 (TIRC7) in acute immune thrombocytopenia (ITP). As the downstream molecule of TIRC7, cytotoxic T lymphocyte antigen-4 (CTLA-4) has been verified its negative regulation of acute ITP. This study aimed to investigate the exact role of CTLA-4 and its relationship with TIRC7 in acute ITP.
View Article and Find Full Text PDFMed Oncol
July 2015
Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, No. 99 West Huaihai Road, Xuzhou, 221002, Jiangsu Province, China.
Antithymocyte globulin (ATG) combined with cyclosporine A (CsA) has been widely used as a standard regimen in the treatment of aplastic anemia (AA), especially in severe aplastic anemia (SAA). Abnormally activated T cells might be the immune pathogenesis of AA. T cell immune response cDNA 7 (TIRC7) has been demonstrated its essential role in T cell activation; however, little is known about the role of TIRC7 in AA.
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