کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7609511 | 1493400 | 2017 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Definition and dynamic control of a continuous chromatography process independent of cell culture titer and impurities
ترجمه فارسی عنوان
تعریف و کنترل دینامیکی فرایند کروماتوگرافی مستمر بدون تریت سلول و ناخالصی
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کلمات کلیدی
mAbLOQHCCFPCCHCPdBCRP-HPLCMonoclonal antibody - آنتی بادی مونوکلونالUltraviolet - اشعه فرابنفشMED - باTiter - تیترDynamic binding capacity - ظرفیت اتصال پویاmedium - متوسطlimit of quantification - محدودیت اندازه گیریPurification - پاکسازیhost cell protein - پروتئین سلولی میزبانReverse phase high performance liquid chromatography - کروماتوگرافی مایع با کارایی با رزولوشن بالاDynamic control - کنترل پویا
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Recent studies have provided methods to optimize and improve the design of PCC for cell culture titers up to about 3Â g/L. This paper defines a continuous loading strategy for PCC that is independent of cell culture background and encompasses cell culture titers up to about 31Â g/L. Initial experimentation showed a challenge with determining a difference in change in UV280Â nm signal (ie. ÎUV) between cell culture feed and monoclonal antibody (mAb) concentration. Further investigation revealed UV280Â nm absorbance of the cell culture feedstock without antibody was outside of the linear range of detection for a given cell pathlength. Additional experimentation showed the difference in ÎUV for various cell culture feeds can be either theoretically predicted by Beer's Law given a known absorbance of the media background and impurities or experimentally determined using various UV280Â nm cell pathlengths. Based on these results, a 0.35Â mm pathlength at UV280Â nm was chosen for dynamic control to overcome the background signal. The pore diffusion model showed good agreement with the experimental frontal analysis data, which resulted in definition of a ÎUV setpoint range between 20 and 70% for 3C-PCC experiments. Product quality of the elution pools was acceptable between various cell culture feeds and titers up to about 41Â g/L. Results indicated the following ÎUV setpoints to achieve robust dynamic control and maintain 3C-PCC yield: â¼20-45% for titers greater than 10Â g/L depending on UV absorbance of the HCCF and â¼45-70% for titers of up to 10Â g/L independent of UV absorbance of the HCCF. The strategy and results presented in this paper show column loading in a continuous chromatography step can be dynamically controlled independent of the cell culture feedstock and titer, and allow for enhanced process control built into the downstream continuous operations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1526, 1 December 2017, Pages 58-69
Journal: Journal of Chromatography A - Volume 1526, 1 December 2017, Pages 58-69
نویسندگان
Rebecca A. Chmielowski, Linda Mathiasson, Hans Blom, Daniel Go, Hanno Ehring, Heera Khan, Hong Li, Collette Cutler, Karol Lacki, Nihal Tugcu, David Roush,