Human serum albumin interference on plasmon-based immunokinetic assay for antibody screening in model blood sera.

Human serum albumin interference on plasmon-based immunokinetic assay for antibody screening in model blood sera.
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人血清白蛋白对基于等离子体的免疫动力学测定的干扰,用于模型血清中抗体筛选。

DOI:
10.1016/j.ab.2010.05.015
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发表时间:
2010
影响因子:
2.9
通讯作者:
Van Vuuren BJ
Van Vuuren BJ
中科院分区:
生物学4区
文献类型:
--
作者:
Van Vuuren BJ

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人血清白蛋白(HSA)对牛血清白蛋白抗体免疫动力学试验的影响已经在模型内血清溶液中确定,HSA浓度范围为0至450μM (0 - 30mg - 1)。该分析在两个基于等离子体的检测平台上进行:一个连续的金表面和一个基于纳米颗粒阵列的读取器。该方法在磷酸盐缓冲盐水中最低检测浓度为760±160pM(120±25ngml - 1),生理HSA浓度为2.5±0.7nM(380±100ngml - 1)。HSA的浓度与溶液的折射率相关,这可以用来校准分析反应。在150mM浓度下加入带电的混沌态SCN−提高了分析的重复性和一致性,最低检测浓度为2.9±0.5nM(440±80ngml−1)。高浓度HSA对免疫动力学测定的影响可以通过在参考通道中测量体积折射率来纠正。
The effect of human serum albumin (HSA) on an immunokinetic assay for an antibody to bovine serum albumin has been determined for in-model serum solutions with HSA concentrations in the range 0 to 450μM (0–30mgml−1). The assay is performed on two plasmon-based detection platforms: a continuous gold surface and a nanoparticle array-based reader. The assay has a minimum detection concentration of 760±160pM (120±25ngml−1) in phosphate-buffered saline, falling to 2.5±0.7nM (380±100ngml−1) in physiological HSA concentration. The concentration of HSA correlates with the refractive index of the solution, and this may be used to calibrate assay response. The addition of the charged chaotrope SCN−in 150mM concentration improves the reproducibility and consistency of the assay, with a minimum detection concentration of 2.9±0.5nM (440±80ngml−1). The effect of high concentrations of HSA on the immunokinetic assay can be corrected with a measurement of bulk refractive index in a reference channel.
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使用无标记生物光子纳米颗粒阵列筛选全血清 BSA 抗体。
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