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Isolation of a vascular cell wall-specific monoclonal antibody recognizing a cell polarity by using a phage display subtraction method

机译:血管细胞壁特异性单克隆抗体的分离 通过噬菌体展示识别细胞极性 减法

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摘要

Using a strategy consisting of (i) the isolation of cell walls from synchronously differentiating cells of Zinnia, (ii) the generation of mAbs with an antibody phage display method, and (iii) screening with a subtraction method, we isolated mAbs recognizing vascular development-specific cell wall components without prior antigen identification. One of the isolated mAbs, designated CN 8, recognized a cell wall component contained in the hemicellulosic fraction. Immunohistochemical analyses showed that the CN 8 epitope was localized to the cell wall of immature tracheary elements and xylem parenchyma cells. In immature tracheary elements, the CN 8 epitope had a polarized localization pattern regardless of whether the cells are formed as parts of vessels in situ or as single tracheary elements in vitro, suggesting that cell polarity autonomously formed on the cell wall may function in tracheary element differentiation.
机译:使用以下策略组成:(i)从百日草同步分化细胞中分离细胞壁,(ii)用抗体噬菌体展示方法生成mAb,以及(iii)用减法筛选,我们分离出识别血管发育的mAb特异性的细胞壁成分,无需事先进行抗原鉴定。分离的单克隆抗体之一,命名为CN 8,识别了半纤维素级分中所含的细胞壁成分。免疫组织化学分析表明,CN 8表位位于未成熟气管元件和木质部实质细胞的细胞壁。在未成熟的气管元件中,CN 8表位具有极化的定位模式,无论细胞是在原位形成为血管的一部分还是在体外形成为单个气管元件,提示在细胞壁上自主形成的细胞极性可能在气管元件中起作用差异化。

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