CircRNA Regulation of T Cells in Cancer: Unraveling Potential Targets

Zelin Li1,2, Shuanshuan Yin2, Kangping Yang3

  • 1School of Basic Medical Sciences, Jiangxi Medical College, Nanchang University, Nanchang 330047, China.

Insights

Circular RNAs (circRNAs) impact T cell exhaustion in cancer, hindering antitumor immunity. Understanding these circRNAs offers new avenues for precision immunotherapy and predicting treatment responses.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • T lymphocytes are crucial for fighting cancer but can become exhausted, allowing tumors to evade immune detection.
  • Circular RNAs (circRNAs) are key regulators in cancer, influencing gene expression and protein function.
  • The role of circRNAs in T cell exhaustion within the tumor microenvironment is an emerging area of research.

Purpose of the Study:

  • To systematically review the complex relationship between circRNAs and T cell modulation in the tumor microenvironment.
  • To elucidate the mechanisms by which circRNAs contribute to T cell exhaustion and immune evasion.
  • To explore the potential of circRNAs as therapeutic targets and biomarkers for cancer immunotherapy.

Main Methods:

  • Systematic literature review of studies investigating circRNAs and T cell interactions in cancer.
  • Analysis of molecular pathways regulated by circRNAs affecting T cell function.
  • Evaluation of current and potential future applications of circRNAs in cancer immunotherapy.

Main Results:

  • CircRNAs significantly influence T cell exhaustion through various regulatory mechanisms within the tumor microenvironment.
  • Specific circRNAs have been identified that promote or inhibit T cell dysfunction and immune evasion.
  • CircRNAs demonstrate potential as predictive biomarkers for immunotherapeutic response.

Conclusions:

  • CircRNAs play a critical role in regulating T cell exhaustion and immune evasion in cancer.
  • Targeting circRNA-mediated pathways presents a promising strategy for developing novel cancer immunotherapies.
  • CircRNAs hold translational value as biomarkers for guiding precision immunotherapy.

Related Concept Videos

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...
699
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.
510
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...
3.8K
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...
7.4K
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.6K
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
998