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NF-AT-luciferase reporter T cell lines as tools to screen immunosuppressive drugs
C T Baldari1, M M Di Somma, M B Majolini
1IRIS-Biocine, Siena, Italy.
Abstract:
The development of safer analogues of immunosuppressants such as cyclosporin A and FK506 is an important goal for a number of clinical applications ranging from transplantation to the treatment of autoimmune diseases. Here we show the generation and the characterization of Jurkat T cell lines stably transfected with a reporter construct containing the firefly luciferase gene under the control of NF-AT. These lines specifically respond in a cyclosporin A-sensitive manner to T cell antigen receptor-derived signals. Due to the high levels of luciferase activity expression fewer than 1000 cells are required for detection of luciferase. In addition, a simplified luciferase assay allows to reduce both the manipulations and the time required for the assay, making these lines potentially useful models for the automated screening of cyclosporin A and FK506 analogues.
Insights
Researchers developed new Jurkat T cell lines that efficiently detect immunosuppressants like cyclosporin A. These reporter cell lines enable faster screening for novel immunosuppressive drug analogues for transplantation and autoimmune diseases.
Area of Science:
- Immunology
- Molecular Biology
- Drug Discovery
Background:
- Development of safer immunosuppressants is crucial for transplantation and autoimmune disease treatments.
- Cyclosporin A and FK506 are key immunosuppressive drugs with potential for analogue development.
- Existing screening methods can be time-consuming and labor-intensive.
Purpose of the Study:
- To generate and characterize novel Jurkat T cell reporter lines for screening immunosuppressants.
- To establish a sensitive and efficient assay for detecting T cell receptor-derived signals.
- To facilitate the automated screening of cyclosporin A and FK506 analogues.
Main Methods:
- Stable transfection of Jurkat T cells with a luciferase reporter construct under NF-AT control.
- Characterization of reporter cell line response to T cell receptor stimulation.
- Optimization of a simplified luciferase assay for high-throughput screening.
Main Results:
- Generated Jurkat T cell lines exhibiting cyclosporin A-sensitive responses to T cell receptor signals.
- Demonstrated high luciferase activity, enabling detection with fewer than 1000 cells.
- Developed a simplified assay reducing time and manipulation for screening.
Conclusions:
- The novel Jurkat T cell reporter lines provide a sensitive and efficient model for drug screening.
- These cell lines are valuable tools for identifying novel immunosuppressive drug analogues.
- The simplified assay format supports automated screening for cyclosporin A and FK506 analogues.