کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1386883 982540 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of chitosan oligosaccharide on the activation of murine spleen CD11c+ dendritic cells via Toll-like receptor 4
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
The effects of chitosan oligosaccharide on the activation of murine spleen CD11c+ dendritic cells via Toll-like receptor 4
چکیده انگلیسی

To investigate the effects of chitosan oligosaccharide (COS) on dendritic cells (DCs) and the role of Toll-like receptor 4 (TLR4) in this immune process, Murine spleen CD11c+ dendritic cells (SDCs) were isolated and cultured with S-COS and B-COS with polymeration degree of 3–7 and 7–16, respectively. The results showed that B-COS up-regulated the expressions of MHCII and CD86 on SDCs, promoted the secretion of TNF-α from SDCs. SDCs treated with B-COS stimulated the proliferation of the CD4+T cells. However, these effects were not observed on SDCs treated with S-COS. Importantly, silencing the TLR4 expressions on SDCs by RNA interference approach attenuated the expression of CD86, MHCII on SDCs, and the secretion of TNF-α from SDCs, and the stimulating CD4+T cells proliferation capacity of SDCs induced by B-COS. These results suggest that B-COS, but not S-COS, promotes the activation of SDCs and TLR4 plays a bridge role in this process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 83, Issue 3, 30 January 2011, Pages 1075–1081
نویسندگان
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