Clinica Chimica Acta:糖基化可能影响性激素结合球蛋白的测量?

2020-07-19 MedSci原创 MedSci原创

使用各种“内部” SHBG抗体与一致的对照配对,研究了通过2位酶联免疫吸附测定法测定的性激素结合球蛋白(SHBG)之间的差异。

使用各种“内部” SHBG抗体与一致的对照配对,研究了通过2位酶联免疫吸附测定法测定的性激素结合球蛋白(SHBG)之间的差异。2位点的单克隆ELISAs使用相同的碱基 (11F11),单克隆抗体(7H9)和多克隆SHBG抗体与basecoat抗体(11F11)配对时观察到不一致。用7H9对不一致的样品和纯化的SHBG进行唾液酸酶处理,结果显示SHBG水平增加,而在一致的样品中SHBG没有变化。相反地,在唾液酸酶处理后,使用其他单克隆抗体配对测定的不一致样本SHBG没有变化,而使用相同单克隆抗体配对的一致性样本SHBG水平在唾液酸酶处理后下降。这表明糖基化是抗体识别的一个因素,合成的横跨两个n -链和一个o -链糖基化区域的肽表明,单克隆抗体7H9的SHBG识别可被跨越o -链糖基化位点的肽所破坏。

因此,与免疫分析不一致归因于嗜异性抗体或其他循环抗体不同,它可能归因于糖基化影响了抗体识别,从而影响了SHBG的测量。

原始出处:

John G.LewisPeter A.ElderGlycosylation may influence sex hormone-binding globulin measurements

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    2021-01-30 windight
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    2021-02-12 xzw113
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    2020-07-21 lfyang