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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Cytoplasmic RNA modulators of an inside-ont signal- transduction cascade
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Cytoplasmic RNA modulators of an inside-ont signal- transduction cascade

机译:Inside-ont信号转导级联的细胞质RNA调节剂

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摘要

A vaccinia virus-based RNA expression system enabled high-Ievel cytoplasmic expression of RNA aptamers directed against the intracellular domain of the BETA 2 integrin LFA-l, a transmembrane protein that mediates cell adhesion to intercellular adhesion molecule-l (ICAM-1). In two different cell types, cytoplasmic expression of integrin-binding aptamers reduced inducible cell adhesion to ICAM-1. The aptamers specifically target, and thereby define, a functional cytoplasmic subdomain important for the regulation of cell adhesion in leukocytes. Our approach of aptamer- controlled blocking of signaling pathways in vivo could potentially be applied wherever targeted modulation of a signal transduction cascade is desired.
机译:基于痘苗病毒的RNA表达系统使针对BETA 2整联蛋白LFA-1(一种跨膜蛋白,介导细胞与细胞间粘附分子-1(ICAM-1)的跨膜蛋白)的细胞内结构域的RNA适体能够在细胞中高表达。在两种不同的细胞类型中,整合素结合适体的胞质表达降低了诱导的细胞对ICAM-1的粘附。适体特异性地靶向并由此定义对于调节白细胞中细胞粘附重要的功能性胞质亚结构域。我们的体内适体控制信号传导途径的阻断方法可潜在地应用于需要信号转导级联的靶向调节的任何地方。

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