کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5530619 1549380 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research paperFunctional analysis of acquired CD28 mutations identified in cutaneous T cell lymphoma
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
Research paperFunctional analysis of acquired CD28 mutations identified in cutaneous T cell lymphoma
چکیده انگلیسی


- CD28 mutations identified in CTCL increase binding to the ligands for CD28.
- These mutations result in increased ligand dependent growth and IL-2 secretion.
- Blocking ligand binding may be a novel treatment for some patients with CTCL.

CD28 is the major costimulatory receptor on T cells regulating proliferation, survival and effector function. Acquired mutations in the extracellular domain of CD28 have been identified in patients with cutaneous T cell lymphoma, angioimmunoblastic T cell lymphoma and other T cell neoplasms, suggesting it may contribute to disease pathogenesis. We used a heterologous system in which mutant human CD28 was expressed on primary murine T cells deficient in CD28 to ascertain how specific mutations identified in a genetic screen of patients with cutaneous T cell lymphoma affected normal T cell function. All three mutant CD28 proteins examined enhanced CD28-dependent T cell proliferation and effector function. These data suggest that the mutant CD28 isoforms could accelerate tumor cell growth and increase tumor burden in affected patients. Interruption of CD28:ligand interactions may be an effective, targeted therapy for a subset of patients whose tumors bear the mutant CD28 receptor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cellular Immunology - Volume 319, September 2017, Pages 28-34
نویسندگان
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