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首页> 外文期刊>Bioprocess and Biosystems Engineering >Apparent protein cloud point temperature determination using a low volume high-throughput cryogenic device in combination with automated imaging
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Apparent protein cloud point temperature determination using a low volume high-throughput cryogenic device in combination with automated imaging

机译:使用小体积高通量低温设备与自动成像相结合的表观蛋白质浊点温度测定

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摘要

Short-term parameters correlating to long-term protein stability, such as the protein cloud point temperature (T-cloud), are of interest to improve efficiency during protein product development. Such efficiency is reached if short-term parameters are obtained in a low volume and high-throughput (HT) manner. This study presents a low volume HT detection method for (sub-zero) T-cloud determination of lysozyme, as such an experimental method is not available yet. The setup consists of a cryogenic device with an automated imaging system. Measurement reproducibility (median absolute deviation of 0.2 degrees C) and literature-based parameter validation (Pearson correlation coefficient of 0.996) were shown by a robustness and validation study. The subsequent case study demonstrated a partial correlation between the obtained apparent T-cloud parameter and long-term protein stability as a function of lysozyme concentration, ion type, ionic strength, and freeze/thaw stress. The presented experimental setup demonstrates its ability to advance short-term strategies for efficient protein formulation development.Graphical Abstract
机译:与长期蛋白质稳定性相关的短期参数,例如蛋白质浊点温度(T-cloud),对于提高蛋白质产品开发过程中的效率很重要。如果以小体积和高通量(HT)的方式获得短期参数,则可以达到这种效率。这项研究提出了一种用于(低于零)T-cloud测定溶菌酶的小体积HT检测方法,因为这种实验方法尚不可用。该设置包括具有自动成像系统的低温设备。稳健性和验证研究显示了测量的可重复性(中值绝对偏差为0.2摄氏度)和基于文献的参数验证(Pearson相关系数为0.996)。随后的案例研究表明,获得的表观T-云参数与长期蛋白质稳定性之间的部分相关性是溶菌酶浓度,离子类型,离子强度和冻融应力的函数。提出的实验装置证明了其为有效的蛋白质制剂开发推进短期策略的能力。

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