Related Experiment Videos
Evaluation of novel control elements by construction of eukaryotic expression vectors
C Furebring1, M Ohlin, S Pettersson
1Department of Immunotechnology, Lund University, Sweden.
Gene
|April 1, 1997
Summary
Researchers developed a novel expression vector, pTIF-1, to enhance immunoglobulin heavy chain (IgH) gene production. The vector significantly increased IgH gene expression in myeloma cells, offering a versatile tool for antibody research.
Area of Science:
- Molecular Biology
- Immunology
- Gene Expression
Background:
- Mammalian eukaryotic expression vectors are crucial for producing immunoglobulin heavy chain (IgH) genes.
- Optimizing IgH gene expression is essential for antibody research and therapeutic development.
Purpose of the Study:
- To design and characterize a novel mammalian eukaryotic expression vector, pTIF-1, for enhanced IgH gene production.
- To evaluate the impact of specific enhancer elements on IgH gene expression levels.
Main Methods:
- Construction of the pTIF-1 expression vector incorporating VH promoter, muE, and 3'E elements.
- Stable transfection of the pTIF-1 vector into the J558L myeloma cell line.
- Quantitative analysis of rearranged IgH gene expression levels.
Main Results:
- The pTIF-1 vector, containing the IgH 3' enhancer (3'E), demonstrated a fivefold increase in IgH gene expression compared to vectors lacking the enhancer.
- The positive effect of the 3'E on expression was found to be position-independent.
- Inclusion of HS3 and HS4 elements did not further enhance expression in the tested cell line.
Conclusions:
- The novel pTIF-1 vector significantly enhances IgH gene expression, providing a valuable tool for antibody production.
- The vector's modular design, allowing for VDJ region and constant region exchange, facilitates diverse antibody studies and effector function analysis.