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Updated: Aug 12, 2026
10:44
A Three-dimensional Thymic Culture System to Generate Murine Induced Pluripotent Stem Cell-derived Tumor Antigen-specific Thymic Emigrants
Published on: August 9, 2019
Circumventing T-cell tolerance to tumour antigens
H W Kessels1, K E de Visser, A M Kruisbeek
1Department of Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
Summary
Researchers developed new technologies to enhance cancer immunotherapy by improving T-cell receptor (TCR) affinity. This approach aims to boost the immune system's ability to fight tumors, offering a promising avenue for cancer treatment.
Area of Science:
- Immunology
- Oncology
- Biotechnology
Background:
- Cancer vaccines often fail due to low-affinity T-cell responses.
- Naturally occurring tumor-specific T-cell receptors (TCRs) are frequently inefficient for tumor rejection.
Purpose of the Study:
- To develop novel technologies for creating enhanced tumor-specific T-cell immunity.
- To overcome limitations of low-affinity T-cell receptors in cancer patients.
Main Methods:
- Expanding low-affinity T cells using variant peptides with enhanced TCR-binding.
- Employing retroviral library-based technology to improve TCR affinity in vitro.
- Demonstrating the feasibility of TCR gene transfer for generating antigen-specific T cells in vivo.
Main Results:
- Developed a toolbox for creating improved TCRs against human tumor antigens.
- Showcased methods to enhance T-cell receptor affinity and specificity.
- Established proof of principle for in vivo TCR gene transfer.
Conclusions:
- The developed technologies can generate high-affinity TCRs for tumor antigens.
- This approach enables the engineering of peripheral T cells for tumor reactivity.
- Offers a potential strategy to improve cancer immunotherapy outcomes.
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