Naturally Occurring Genetic Alterations in Proximal TCR Signaling and Implications for Cancer Immunotherapy
Andrew Kent1,2,3, Natalie V Longino1,2,3,4, Allison Christians1,2,3
1Division of Medical Oncology, Department of Medicine, University of Colorado, Aurora, CO, United States.
Abstract:
T cell-based immunotherapies including genetically engineered T cells, adoptive transfer of tumor-infiltrating lymphocytes, and immune checkpoint blockade highlight the impressive anti-tumor effects of T cells. These successes have provided new hope to many cancer patients with otherwise poor prognoses. However, only a fraction of patients demonstrates durable responses to these forms of therapies and many develop significant immune-mediated toxicity. These heterogeneous clinical responses suggest that underlying nuances in T cell genetics, phenotypes, and activation states likely modulate the therapeutic impact of these approaches. To better characterize known genetic variations that may impact T cell function, we 1) review the function of early T cell receptor-specific signaling mediators, 2) offer a synopsis of known mutations and genetic alterations within the associated molecules, 3) discuss the link between these mutations and human disease and 4) review therapeutic strategies under development or in clinical testing that target each of these molecules for enhancing anti-tumor T cell activity. Finally, we discuss novel engineering approaches that could be designed based on our understanding of the function of these molecules in health and disease.
Insights
Understanding T cell genetics is key to improving cancer immunotherapies. Genetic variations in T cell signaling mediators impact treatment response and toxicity, guiding new therapeutic strategies.
Area of Science:
- Immunology
- Oncology
- Genetics
Background:
- T cell-based immunotherapies show promise in cancer treatment but exhibit variable patient responses and toxicity.
- Heterogeneous clinical outcomes suggest that T cell genetics, phenotypes, and activation states critically influence therapeutic efficacy.
Purpose of the Study:
- To review genetic variations in T cell receptor signaling mediators.
- To explore the link between these genetic alterations and human diseases.
- To discuss novel therapeutic strategies targeting these molecules for enhanced anti-tumor T cell activity.
Main Methods:
- Review of literature on T cell receptor signaling mediators.
- Synopsis of known mutations and genetic alterations in associated molecules.
- Discussion of disease associations and therapeutic interventions.
Main Results:
- Identification of key T cell signaling mediators whose genetic variations impact T cell function.
- Correlation of specific mutations with human diseases and treatment outcomes.
- Overview of current and developing therapies targeting these mediators.
Conclusions:
- Genetic variations in T cell signaling molecules significantly modulate immunotherapy effectiveness and toxicity.
- Targeting these genetic pathways offers potential for improving T cell-based cancer treatments.
- Novel engineering approaches informed by molecular function can enhance anti-tumor T cell activity.
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