Estimation of kinetic rate constants from surface plasmon resonance experiments

Estimation of kinetic rate constants from surface plasmon resonance experiments
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从表面等离子体共振实验估计动力学速率常数

DOI:
10.1049/ic.2010.0300
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发表时间:
2010
期刊:
--
影响因子:
--
通讯作者:
Evans N
Evans N
中科院分区:
--
文献类型:
--
作者:
Evans N

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为了确定抗体结合特性,有必要从该过程的定量测量确定反应常数。表面等离子体共振(SPR)提供了方便的实时测量的反应,使随后的反应常数的估计。两个模型被认为是代表运输效应的存在下的结合反应。这些模型之一,有效速率常数近似,可以从其他应用准稳态假设。的反应常数相对于SPR测量的uniformity被认为是通过一个结构识别分析。结果表明,有效速率常数模型是不可识别的,除非分析物浓度是已知的,而完整的模型是结构上全球可识别的提供关联和解离相被认为是。两种模型提供了商业抗A单克隆IgM实验的未知速率常数的可比估计值。
In order to characterise antibody binding characteristics it is necessary to determine reaction constants from quantitative measurements of the process. Surface plasmon resonance (SPR) provides convenient real-time measurement of the reaction that enables subsequent estimation of the reaction constants. Two models are considered that represent the binding reaction in the presence of transport effects. One of these models, the effective rate constant approximation, can be derived from the other applying a quasi-steady state assumption. Uniqueness of the reaction constants with respect to SPR measurements is considered via a structural identifiability analysis. It is shown that the effective rate constant model is unidentifiable, unless the analyte concentration is known, while the full model is structurally globally identifiable provided association and dissociation phases are considered. Both models provide comparable estimates for the unknown rate constants for a commercial anti-A monoclonal IgM experiment.
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