Details for: TRAV16

Gene ID: 28667

Gene Type:  Other  - A known gene or region type that lacks a specific category. Includes immunoglobulin (Ig), T-cell receptor (TCR) gene segments, and repetitive elements.

Symbol: TRAV16

Ensembl ID: ENSG00000211796

Description: T cell receptor alpha variable 16

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Cell Significance Landscape

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Associated with

Significant Cells

Cell Significance Index (CSI) scores for the chosen context(s)

  • CD8-positive, alpha-beta memory T cell CL0000909
    CSI 4.04
    rCSI 4.22%
    PRS 99.95

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this specific cell.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.
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Other Information

This section provides additional information about the gene, including a description generated by an AI language model and details about associated proteins.

## Summary [TRAV16](/details-gene/28667) (T cell receptor alpha variable 16) is a gene segment that encodes a variable region of the T-cell receptor (TCR) alpha chain. As an integral component of the [T cell receptor complex](/details-go/GO:0042101), it plays a critical role in the [adaptive immune response](/details-go/GO:0002250) by contributing to the diversity of the TCR repertoire, which is essential for recognizing a vast array of foreign antigens. Its expression is highly specific to T lymphocytes, with data indicating it is a particularly significant component in [CD8-positive, alpha-beta memory T cells](/details-cell/CL0000909). ## Cellular Roles and Expression Landscape The expression profile of [TRAV16](/details-gene/28667) underscores its specialized function within the immune system. **Overall**, the gene shows its most significant expression in [CD8-positive, alpha-beta memory T cells](/details-cell/CL0000909) (CSI: 4.04), a cell type responsible for long-term immunity and rapid responses to previously encountered pathogens. The presence of [TRAV16](/details-gene/28667) in these cells is fundamental to their identity and function, as it forms a key part of the receptor that defines their antigen specificity. The gene's role is not merely as a lineage marker but as a functional determinant that enables these memory cells to recognize and mount a defense against specific threats. The lack of expression outside of T lymphocyte populations suggests a highly constrained and specific role in adaptive immunity. ## Pathways and Molecular Function [TRAV16](/details-gene/28667) is directly involved in processes central to adaptive immunity. Its primary molecular function is to serve as a building block for the T cell receptor. * **[T cell receptor complex](/details-go/GO:0042101):** [TRAV16](/details-gene/28667) is one of many variable (V) gene segments that recombine during T cell development to form a functional TCR alpha chain. This chain pairs with a beta chain to create the alpha-beta TCR, which is responsible for recognizing peptide antigens presented by MHC molecules on the surface of other cells. * **[Adaptive immune response](/details-go/GO:0002250):** The combinatorial diversity generated by using different V-gene segments like [TRAV16](/details-gene/28667) is the foundation of the adaptive immune system's ability to respond to a virtually limitless number of pathogens. The specific [TRAV16](/details-gene/28667) segment can confer a unique binding property to the TCR, enabling it to engage with a specific antigen and initiate a targeted immune response, such as the activation of cytotoxic T lymphocytes or helper T cells. ## Research Directions The specific function of T cell populations expressing [TRAV16](/details-gene/28667)-containing receptors remains a key area for investigation, particularly in the context of infection, autoimmunity, and cancer. **Proposed Hypotheses:** 1. Given the preferential usage of certain V-genes in response to specific antigens, it is hypothesized that [T cells](/details-cell/CL0000084) utilizing [TRAV16](/details-gene/28667) may be preferentially expanded during certain chronic viral infections, such as those caused by Epstein-Barr virus (EBV) or cytomegalovirus (CMV), where specific immunodominant epitopes drive T cell selection. 2. The structural conformation of [TRAV16](/details-gene/28667)-containing TCRs may predispose them to cross-react with self-antigens, suggesting a potential role for [TRAV16](/details-gene/28667)-positive T cells in the pathogenesis of specific autoimmune diseases, such as multiple sclerosis or type 1 diabetes. **Experimental Approach:** To test the hypothesis that [TRAV16](/details-gene/28667) is involved in specific antiviral responses, a powerful approach would be to perform high-throughput T cell receptor sequencing (TCR-seq) on peripheral blood mononuclear cells collected from a cohort of individuals with an active CMV infection and a cohort of healthy, CMV-negative controls. By analyzing the V-gene segment usage frequency in the TCR alpha chain repertoire, a statistically significant enrichment of [TRAV16](/details-gene/28667) in the CMV-positive cohort would provide strong evidence for its role in the immune response to this specific pathogen. This could be further validated by synthesizing CMV-derived peptides and testing their ability to stimulate [TRAV16](/details-gene/28667)-positive T cell clones in vitro. **Therapeutic Potential:** As [TRAV16](/details-gene/28667) is a component of the TCR, it is not a direct drug target. However, the T cells that express a [TRAV16](/details-gene/28667)-containing receptor are potential therapeutic targets. If a TCR utilizing [TRAV16](/details-gene/28667) is identified to be highly reactive against a specific tumor antigen, this TCR sequence could be engineered into patient T cells as a form of adoptive cell therapy (TCR-T cell therapy) for cancer. Conversely, if [TRAV16](/details-gene/28667)-positive T cells are found to be key drivers of an autoimmune disease, they could be targeted for depletion using strategies like antibody-based therapies directed against unique features of that specific T cell population.