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Propagation of mouse and human T cells with defined antigen specificity and function
1Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
Ciba Foundation Symposium
|January 1, 1994
Summary
Culturing functional CD4+ T cells for cancer therapy is challenging due to issues like background reactivity and loss of antigen specificity. New strategies using cytokines and antigen-presenting cells improve T cell expansion and function for therapeutic applications.
Area of Science:
- Immunology
- Cell Biology
- Cancer Research
Background:
- Maintaining functional CD4+ T cells in culture is difficult, limiting their study in tumor rejection and clinical use.
- Existing CD8+ T cell therapies highlight the need for optimized CD4+ T cell culture conditions.
Purpose of the Study:
- To promote polyclonal, antigen-specific CD4+ T cell responses (Th1 or Th2) for antitumour therapy or allograft facilitation.
- To overcome obstacles in murine and human CD4+ T cell cultures, including background reactivity and loss of antigen specificity.
Main Methods:
- Utilized selected cytokines, antigen-presenting cells, and specific culture maneuvers.
- Addressed challenges such as high background reactivity to antigen-presenting cells and insufficient antigen specificity for expansion.
Main Results:
- Developed strategies to enhance CD4+ T cell culture, improving antigen-specific responses.
- Overcame issues like loss of interleukin-2 secretion potential in Th1 cells and selection for artifactual antigen recognition.
Conclusions:
- Devised effective strategies to surmount common obstacles in CD4+ T cell culturing.
- Enabled the generation of functional CD4+ T cells for potential therapeutic applications in cancer and transplantation.