کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
20118 43158 2016 5 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Modified harvest system for enhancing Factor VIII yield in alternating tangential flow perfusion culture
ترجمه فارسی عنوان
اصلاح سیستم برداشتب رای افزایش عملکرد فاکتور VIII به طور متناوب در فرهنگ پرفیوژن جریان مماس
کلمات کلیدی
اصلاح سیستم برداشت. فرهنگ پرفیوژن جریان متناوب؛ عملکرد FVIII؛ خرج کردن دریچه؛ شیر یکطرفه؛ فشار عبوری؛ رسوب فیلتر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی


• We developed a novel harvest system for ATF perfusion culture as an alternative method to replace a peristaltic pump.
• The novel harvest system consists of a check valve, pinch valve and timer.
• The system achieved the enhancement of the yield of Factor VIII activity and Factor VIII antigen.
• The yield enhancement was due to the increase of transmembrane pressure across hollow fiber filter using the system.
• The system offers the possibility to overcome the fouling problem in ATF perfusion culture.

This study describes the development and experimental verification of a modified harvest system to enhance Factor VIII (FVIII) yield in an alternating tangential flow (ATF) perfusion culture. The main innovation of the modified harvest system is the use of check and pinch valves, eliminating the need of a peristaltic pump for harvest. The system was applied to perfusion cultures of Chinese hamster ovary cells, which co-express both recombinant human FVIII (rhFVIII) and von Willebrand factor (vWF). The modified harvest system showed comparable cell growth with the conventional harvest system using a peristaltic pump. The perfusion rate was successfully controlled using the system. In addition, the modified harvest system achieved an approximately 13.6-fold increase in the final concentration yield of FVIII activity and a 1.47-fold increase in the production yield of FVIII activity compared with a peristaltic pump. Enhancement of the yield of FVIII activity resulted from the reduction of FVIII antigen (FVIII:Ag) retention. As a result of transmembrane pressure (TMP) measurement, the reduction of the retained FVIII:Ag was due to the increased TMP, which was caused by the characteristic function of a check valve, compared with a peristaltic harvest system. The modified harvest system developed in this study could be useful to enhance the production yield of other recombinant proteins in ATF perfusion culture.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Bioscience and Bioengineering - Volume 121, Issue 5, May 2016, Pages 561–565
نویسندگان
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