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Development of an Expression Vector Engineering Strategy Based on Tdna Insulator Element for the Stable Expression of Vascular Endothelial Growth Factor Receptor-Fc Fusion Protein Publisher Pubmed



Rahimpour A1, 2 ; Mosallaei M3 ; Pourghazi F4 ; Tabatabaee SH5 ; Hoseinpoor R6 ; Pourmaleki E1, 2 ; Soosanabadi M7, 8
Authors

Source: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy Published:2023


Abstract

During the past decades, tremendous advances have occurred in manufacturing recombinant therapeutic proteins in Chinese hamster ovary (CHO) cells. Nevertheless, the production of stable high-producing cell lines has remained a major obstacle in the development process of the CHO cell line. It has been shown that genomic regulatory elements can promote cell line development efficiency by improving transgenes' productivity and stability. Such elements include insulators, ubiquitous chromatin opening elements, scaffold/matrix attachment regions, and antirepressors. In addition, tDNA elements are shown to act as insulators in mammalian cells. This study examines the effect of the tDNA insulator on stable expression of a vascular endothelial growth factor receptor-Fc fusion protein. © Copyright 2023, Mary Ann Liebert, Inc., publishers 2023.
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