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用于中国仓鼠卵巢细胞生长及重组水痘-带状疱疹病毒糖蛋白E表达的培养基优化

Culture media optimization for Chinese hamster ovary cell growth and expression of recombinant varicella-zoster virus glycoprotein E.

作者信息

Kim Kwang Sung, Park Shin Ae, Wui Seo Ri, Ko Ara, Lee Na Gyong

机构信息

Department of Integrated Bioscience & Biotechnology, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006 Republic of Korea.

R&D Center, EyeGene, Goyang, 10551 Republic of Korea.

出版信息

Cytotechnology. 2021 Jun;73(3):433-445. doi: 10.1007/s10616-021-00468-1. Epub 2021 Apr 20.

DOI:10.1007/s10616-021-00468-1
PMID:33897103
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8056999/
Abstract

UNLABELLED

Herpes zoster (HZ) is caused by reactivation of varicella-zoster virus (VZV) latent in the sensory ganglia and causes severe pain, often leading to postherpetic neuralgia (PHN). Two prophylactic vaccines against HZ are currently licensed for human use, a live attenuated vaccine and a subunit vaccine containing recombinant VZV glycoprotein E (gE) as antigen. The latter has superior protective efficacy against HZ and PHN. During HZ subunit vaccine development, we obtained Chinese hamster ovary (CHO) cell clones expressing VZV gE. This study was performed to optimize culture media conditions for CHO cell growth and gE production. Using a high-throughput culture system, three CHO cell clones were cultured in microtiter plates containing 24 different basal media, and three basal media were selected. The clone with the highest gE expression was fed-batch cultured in each of the three basal media in combination with 13 different feed media. A pair of media, BalanCD CHO Growth A and EX-CELL Advanced CHO Feed 1, with the highest productivity was selected for gE production. Scale-up fed-batch cultures of the selected clone cultured in a wave bag bioreactor containing the optimized media yielded 2440 mg gE protein/L culture, a 11.5-fold increase compared to original culture conditions (batch culture in CD OptiCHO medium). The optimized media condition is used to produce VZV gE antigen for an HZ subunit vaccine, which is under phase I clinical trial. This study would provide valuable insights on culture media optimization for CHO cells expressing a recombinant vaccine antigen.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s10616-021-00468-1.

摘要

未标注

带状疱疹(HZ)由潜伏在感觉神经节中的水痘-带状疱疹病毒(VZV)重新激活引起,会导致严重疼痛,常引发带状疱疹后神经痛(PHN)。目前有两种预防HZ的疫苗已获许可用于人类,一种是减毒活疫苗,另一种是含有重组VZV糖蛋白E(gE)作为抗原的亚单位疫苗。后者对HZ和PHN具有更高的保护效力。在HZ亚单位疫苗研发过程中,我们获得了表达VZV gE的中国仓鼠卵巢(CHO)细胞克隆。本研究旨在优化CHO细胞生长和gE生产的培养基条件。使用高通量培养系统,将三个CHO细胞克隆在含有24种不同基础培养基的微量滴定板中培养,筛选出三种基础培养基。将gE表达量最高的克隆在这三种基础培养基中分别与13种不同的补料培养基进行补料分批培养。选择了一对生产率最高的培养基,即BalanCD CHO Growth A和EX-CELL Advanced CHO Feed 1,用于gE生产。在装有优化培养基的波浪袋生物反应器中对所选克隆进行放大补料分批培养,产生了2440 mg gE蛋白/L培养物,与原始培养条件(在CD OptiCHO培养基中进行分批培养)相比增加了11.5倍。优化后的培养基条件用于生产处于I期临床试验阶段的HZ亚单位疫苗的VZV gE抗原。本研究将为表达重组疫苗抗原的CHO细胞的培养基优化提供有价值的见解。

补充信息

在线版本包含可在10.1007/s10616-021-00468-1获取的补充材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/975a/8167074/6f5e9d35361b/10616_2021_468_Fig7_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/975a/8167074/44e165cf6547/10616_2021_468_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/975a/8167074/dc11a2103e92/10616_2021_468_Fig2_HTML.jpg
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