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.

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.

Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
798
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
8.5K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
4.0K
Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
9.5K
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
13.2K
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
13.4K