کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5897824 1155276 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The disulfide bond between cysteine 10 and cysteine 34 is required for CCL18 activity
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی علوم غدد
پیش نمایش صفحه اول مقاله
The disulfide bond between cysteine 10 and cysteine 34 is required for CCL18 activity
چکیده انگلیسی
Asthma is a Th2-mediated disease that involves Th2 cell and eosinophil migration into the bronchial mucosa which is dependent upon the expression of a specific set of chemokines within the lung. Among them, CCL18 seems to play a key role because of its preferential expression in the lung, and its up-regulation by Th2 cytokines. Here, we show that the optimal naïve T cell and basophil chemotaxis, and basophil histamine release induced by rhCCL18 occurred at a 100 time lower concentration with CHO-derived rhCCL18 than with E. coli-derived rhCCL18. FT-ICR mass spectrometry of the intact chemokines showed that the rhCCL18 produced by CHO cells contained the 2 disulfide bonds Cys10-Cys34 and Cys11-Cys50, in clear contrast to the rhCCL18 derived from E. coli where the Cys10-Cys34 bond was absent. We found that reduction of the Cys10-Cys34 of the CHO-derived rhCCL18 resulted in a shift of its activity, reaching the same level as the E. coli-derived rhCCL18. These results demonstrate that the Cys10-Cys34 disulfide bond is involved in the function of CCL18.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cytokine - Volume 64, Issue 1, October 2013, Pages 463-470
نویسندگان
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