Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
6989921
Reference Type
Journal Article
Title
Targeted supplementation design for improved production and quality of enveloped viral particles in insect cell-baculovirus expression system
Author(s)
Monterio, F; Bernal, V; Chaillet, M; Berger, I; Alves, PM; ,
Year
2016
Is Peer Reviewed?
Yes
Journal
Journal of Biotechnology
ISSN:
0168-1656
EISSN:
1873-4863
Publisher
ELSEVIER SCIENCE BV
Location
AMSTERDAM
Page Numbers
34-41
PMID
27378622
DOI
10.1016/j.jbiotec.2016.06.029
Web of Science Id
WOS:000380819300005
Abstract
The recent approval of vaccines and gene therapy products for human use produced in the Insect Cell-Baculovirus Expression Vector System (IC-BEVS) underlines the high potential and versatility of this platform. The interest in developing robust production processes emerges to cope with manufacturing pressure, as well as stringent product quality guidelines. Previously, we addressed the impact of the baculovirus infection on the physiology of insect host cell lines, identifying key cellular pathways enrolled in heterologous gene/protein expression. In the present work, this knowledge was applied to design tailored media supplementation schemes to boost IC-BEVS production yields and quality of enveloped viral particles: influenza VLPs (Inf-VLP) and baculovirus vectors (BV).The addition of reduced glutathione, antioxidants and polyamines increased the cell specific yields of baculovirus particles up to 3 fold. Cholesterol was identified as the most critical system booster, capable of improving 2.5 and 6-fold cell specific yields of BV and Inf-VLPs, respectively. Surprisingly, the combination of polyamines and cholesterol supplementation improved baculovirus stock quality, by preventing the accumulation of non-infectious particles during viral replication while selectively increasing infectious particles production. In addition, the specific yields of both enveloped viral particles, BVs and Inf-VLPs, were also increased.The correlation between supplement addition and systems productivity was extensively analyzed, providing a critical assessment on final product quantity and quality as drivers of bioprocess optimization efforts. (C) 2016 Elsevier B.V. All rights reserved.
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity