Journal
BIOTECHNOLOGY AND BIOENGINEERING
Volume 96, Issue 1, Pages 106-117Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/bit.21172
Keywords
enhancer; mouse CMV; therapeutic protein expression; fed-batch culture
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Protein expression in mammalian cells is key for the production and manufacturing of bio-therapeutics with human-like properties and activities. As a molecular basis for reaching high protein expression levels, efficient promoter/enhancer systems are a prerequisite. Here we identify a novel enhancer from the mouse cytomegalovirus (CMV) immediate early 2 (IE2) region as a strong expression-promoting element. We further demonstrate its activity in bi-directional promoter architecture and apply it to generate production clones for IL-18BP, a protein with therapeutic indications in autoimmune diseases. These data show that the IE region from mouse CMV, and the IE2 enhancer/promoter in particular, have a broad potential for application in novel gene expression systems for research, development, and manufacturing of protein drugs.
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