کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10803702 | 1057179 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Type II phosphatidylinositol 4-kinase β is an integral signaling component of early T cell activation mechanisms
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
The early signaling events in T cell activation through CD3 receptor include a rapid change in intra cellular free calcium concentration and reorganization of actin cytoskeleton. Phosphatidylinositol 4-kinases (PtdIns 4-kinases) are implicated as key components in these early signaling events. The role of type II PtdIns 4-kinase β in CD3 receptor signaling was investigated with the help of short hairpin RNA sequences. Cross-linking of CD3 receptors on Jurkat T Cells with monoclonal antibodies showed an early increase in type II PtdIns 4-kinase activity and co-localization of type II PtdIns 4-kinase β with CD3 ζ. Transfection of Jurkat T Cells with shRNAs inhibited CD3 receptor mediated type II PtdIns 4-kinase activation with a concomitant reduction in intra cellular calcium release, suggesting a role for type II PtdIns 4-kinase β in CD3 receptor signal transduction. Knock-down of type II PtdIns 4-kinase β with shRNAs also correlated with a decrease in PtdIns 4-kinase activity in cytoskeleton fractions and reduced adhesion to matrigel surfaces. These results indicate that type II PtdIns 4-kinase β is a key component in early T cell activation signaling cascades.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimie - Volume 95, Issue 8, August 2013, Pages 1560-1566
Journal: Biochimie - Volume 95, Issue 8, August 2013, Pages 1560-1566
نویسندگان
Ranjeet K. Sinha, Naveen Bojjireddy, Dakshayini Kulkarni, Aparna Ratheesh, S.V. Chiplunkar, Rajiv Gude, Gosukonda Subrahmanyam,