Prolonged and increased expression of soluble Fc receptors, IgG and a TCR-Ig fusion protein by transiently transfected adherent 293E cells

被引:67
作者
Berntzen, G [1 ]
Lunde, E [1 ]
Flobakk, M [1 ]
Andersen, JT [1 ]
Lauvrak, V [1 ]
Sandlie, I [1 ]
机构
[1] Univ Oslo, Dept Mol Biosci, N-0316 Oslo, Norway
关键词
prolonged expression; transient transfection; 293E cells; lipofectamine; OriP; EBNAl;
D O I
10.1016/j.jim.2005.01.002
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
In studies of the relation between structure and function of proteins of the immune system, there is a continuous need for screening of a large number of protein variants. To optimise the yield following transient gene expression in small or medium culture volumes, several parameters were investigated. First, secretion levels of a soluble form of human Fc gamma receptor IIA (Fc gamma RIIA) were measured after transfection of 293, 293E, 293T as well as COS-7 cell lines. The transgene was under cytomegalovirus (CMV) promoter control on the expression vector pcDNA3, which also contains an SV40 origin of replication (SV40 ori). All 293 cell lines secreted more protein than COS-7 cells. Introduction of the Epstein Barr virus (EBV) origin of replication (oriP) greatly increased the protein expression from the 293E cells, both the amount of protein produced per day and the duration of production. At best, 293E cells secreted fully functional protein for 3-4 weeks provided supernatant was harvested every 2-3 days followed by medium replacement. This method was then used for expression of soluble forms of human Fc gamma RI, Fc gamma RIIB, the human neonatal Fc receptor (FcRn), a T cell receptor (TCR)-immunoglobulin (Ig) fusion protein, and human IgG3. With an initial culture volume of 5 ml, the yield was approximately 200 mu g for Fc gamma RIIA, 1.5 mu g for Fc gamma RI, 5 mu g for FcRn, 20 mu g for Fc gamma RIIB, 40 lug for the TCR-Ig fusion protein and 850 mu g for IgG3. Culture expansion during the 3 weeks of culture further increased the yield. Protein yield was also improved by scaling up the initial volume, This approach can provide sufficient amounts of protein for screening experiments, and in the case of antibody, milligrams of recombinant protein for extensive structural analysis can be obtained from one single transient transfection. The approach should be of interest to laboratories that do not have access to a bioreactor but still have a requirement for reasonable amounts of protein to be produced in an easy and cost-effective manner. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:93 / 104
页数:12
相关论文
共 30 条
[1]   FUNCTIONAL DOMAINS OF EPSTEIN-BARR-VIRUS NUCLEAR ANTIGEN EBNA-1 [J].
AMBINDER, RF ;
MULLEN, M ;
CHANG, YN ;
HAYWARD, GS ;
HAYWARD, SD .
JOURNAL OF VIROLOGY, 1991, 65 (03) :1466-1478
[2]   SYNTHETIC PEPTIDES AND BETA-CHAIN GENE REARRANGEMENTS REVEAL A DIVERSIFIED T-CELL REPERTOIRE FOR A LAMBDA-LIGHT CHAIN 3RD HYPERVARIABLE REGION [J].
BOGEN, B ;
SNODGRASS, R ;
BRIAND, JP ;
HANNESTAD, K .
EUROPEAN JOURNAL OF IMMUNOLOGY, 1986, 16 (11) :1379-1384
[3]   REGULATED REPLICATION OF AN EPISOMAL SIMIAN VIRUS-40 ORIGIN PLASMID IN COS7 CELLS [J].
CHITTENDEN, T ;
FREY, A ;
LEVINE, AJ .
JOURNAL OF VIROLOGY, 1991, 65 (11) :5944-5951
[4]   High-level and high-throughput recombinant protein production by transient transfection of suspension-growing human 293-EBNA1 cells [J].
Durocher, Y ;
Perret, S ;
Kamen, A .
NUCLEIC ACIDS RESEARCH, 2002, 30 (02) :E9
[5]  
FELGNER JH, 1994, J BIOL CHEM, V269, P2550
[6]   POWERFUL AND VERSATILE ENHANCER-PROMOTER UNIT FOR MAMMALIAN EXPRESSION VECTORS [J].
FOECKING, MK ;
HOFSTETTER, H .
GENE, 1986, 45 (01) :101-105
[7]   NEW HOST-CELL SYSTEM FOR REGULATED SIMIAN VIRUS-40 DNA-REPLICATION [J].
GERARD, RD ;
GLUZMAN, Y .
MOLECULAR AND CELLULAR BIOLOGY, 1985, 5 (11) :3231-3240
[8]   100-liter transient transfection [J].
Girard, P ;
Derouazi, M ;
Baumgartner, G ;
Bourgeois, M ;
Jordan, M ;
Jacko, B ;
Wurm, FM .
CYTOTECHNOLOGY, 2002, 38 (1-2) :15-21
[9]  
Gorman C.M., 1990, DNA Prot. Eng. Tech, V2, P3
[10]   THE HUMAN CYTOMEGALO-VIRUS MAJOR IMMEDIATE EARLY PROMOTER CAN BE TRANS-ACTIVATED BY ADENOVIRUS EARLY PROTEINS [J].
GORMAN, CM ;
GIES, D ;
MCCRAY, G ;
HUANG, M .
VIROLOGY, 1989, 171 (02) :377-385