Abstract:
:Efficient production of large quantities of therapeutic antibodies is becoming a major goal of the pharmaceutical industry. We developed a proprietary expression system using a polyprotein precursor-based approach to antibody expression in mammalian cells. In this approach, the coding regions for heavy and light chains are included within a single open reading frame (sORF) separated by an in-frame intein gene. A single mRNA and subsequent polypeptide are produced upon transient and stable transfection into HEK293 and CHO cells, respectively. Heavy and light chains are separated by the autocatalytic action of the intein and antibody processing proceeds to produce active, secreted antibody. Here, we report advances in sORF technology toward establishment of a viable manufacturing platform for therapeutic antibodies in CHO cells. Increasing expression levels and improving antibody processing by intein and signal peptide selection are discussed.
journal_name
MAbsjournal_title
mAbsauthors
Gion WR,Davis-Taber RA,Regier DA,Fung E,Medina L,Santora LC,Bose S,Ivanov AV,Perilli-Palmer BA,Chumsae CM,Matuck JG,Kunes YZ,Carson GRdoi
10.4161/mabs.25161subject
Has Abstractpub_date
2013-07-01 00:00:00pages
595-607issue
4eissn
1942-0862issn
1942-0870pii
25161journal_volume
5pub_type
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