| Autor: |
Montes, M., Rufer, N., Appay, V., Reynard, S., Pittet, M. J., Speiser, D. E., Guillaume, P., Cerottini, J.-C., Romero, P., Leyvraz, S. |
| Předmět: |
|
| Zdroj: |
Clinical & Experimental Immunology; Nov2005, Vol. 142 Issue 2, p292-302, 11p |
| Abstrakt: |
Increasing evidence suggests that adoptive transfer of antigen-specific CD8+ T cells could represent an effective strategy in the fight against chronic viral infections and malignancies such as melanoma. None the less, a major limitation in the implementation of such therapy resides in the difficulties associated with achieving rapid and efficient expansion of functional T cells in culture necessary to obtain the large numbers required for intravenous infusion. Recently, the critical role of the cytokines interleukin (IL)-2, IL-7 and IL-15 in driving T cell proliferation has been emphasized, thus suggesting their use in the optimization of expansion protocols. We have used major histocompatibility complex (MHC) class I/peptide multimers to monitor the expansion of antigen-specific CD8 T lymphocytes from whole blood, exploring the effect of antigenic peptide dose, IL-2, IL-7 and IL-15 concentrations on the magnitude and functional characteristics of the antigen-specific CD8+ T cells generated. We show here that significant expansions of antigen-specific T cells, up to 50% of the CD8+ T cell population, can be obtained after a single round of antigen/cytokine (IL-2 or IL-15) stimulation, and that these cells display good cytolytic and interferon (IFN)-γ secretion capabilities. Our results provide an important basis for the rapid in vitro expansion of autologous T cells from the circulating lymphocyte pool using a simple procedure, which is necessary for the development of adoptive transfer therapies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
