کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3257202 1207396 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
CD4+ T Lymphocytes with follicular helper phenotype (TFH) in patients with SH2D1A deficiency (XLP)
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
CD4+ T Lymphocytes with follicular helper phenotype (TFH) in patients with SH2D1A deficiency (XLP)
چکیده انگلیسی

Peripheral blood mononuclear cells with TFH phenotype from two asymptomatic XLP patients were studied. Normal/high numbers of CXCR5+, CD4+ T cells coexpressing PD-1 were demonstrated. Peripheral blood mononuclear cells (PBMC) from these patients responded to sub-optimal PHA/IL-2 stimulation upregulating ICOS and CD40L and increasing intracellular expression of IL-10, IL-21 and IL-4 by CD4+ TFH cells. However when compared to N, the time profile of activation and cytokine synthesis was different in XLP and N. While ICOS and CD40L expression in N decreased after 6–8 days, it continued to increase or was maintained in XLP cultures. Intracellular IL-10, IL-21 and IL-4 reached higher values in XLP than N after 8 days. Rather than the absence of TFH cells or their intrinsic inability to respond to stimuli, differences in the time profile of their response could contribute to impair their role as helpers of B lymphocytes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Immunology - Volume 141, Issue 3, December 2011, Pages 357–364
نویسندگان
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