Details for: CL0000912

Cell ID: CL0000912

Cell Name: helper T cell

Description: A effector T cell that provides help in the form of secreted cytokines to other immune cells.

Synonyms: T-helper cell, helper T lymphocyte, helper T-cell, helper T-lymphocyte

Selected Context(s): Overall

Gene Significance Landscape

Display Options
Score:
Display
Genes

Contexts:

Cell Significance Index (CSI) is uniquely calculated to reveal cell-specific gene markers. More info here

Significant Genes List

Genes with the highest and lowest Percentile Rank Scores (PRS) for helper T cell within the selected context(s).

Gene ID: A unique numerical identifier for this specific gene.
Symbol: Shortened abbreviation or name that represents this gene.
Ensembl Gene ID: A unique identifier assigned by Ensembl for genomic data mapping.
CSI Score: A combined effect size and statistical significance measure for helper T cell. Higher scores indicate a stronger, more significant difference in expression.
(Previously described as "Fold Change", but now represents Cliff's Delta × –log10(p).)

Gene ID: A unique numerical identifier for this specific gene.
Symbol: Shortened abbreviation or name that represents this gene.
Ensembl Gene ID: A unique identifier assigned by Ensembl for genomic data mapping.
CSI Score: A combined effect size and statistical significance measure for helper T cell. Higher scores indicate a stronger, more significant difference in expression.
Average CSI: csi sum / gene count
Cell network configuration

This network visualizes key genes for helper T cell. It primarily includes:
1. Top genes highly significant for this cell (Num. Top Cell Genes - based on the 'Min. CSI' setting).
2. Any additional specific 'Context Genes' you add below.
The final network is a combined view. Choose an Interaction Source (pathways or protein interactions) and optionally compare CSI scores with a Baseline Cell Type.

Maximum number of selected genes.
Select a context for the baseline cell.
Select a context for the target cell.
Target Cell for CSI:  helper T cell (CL0000912)

 Legend
Nodes (Genes):
 Query Gene
Node size also reflects Target Cell CSI magnitude.
Node Color (Target Cell CSI in specific network):
 Very High
 High
 Medium
 Low
 Very Low
 N/A or Not Sig.
Edges (Interactions):
 STRING (Protein-Protein)
 ONTOLOGY (Shared Pathway)
 Colors vary by pathway category; default arrow applies.

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## Summary The [helper T cell](/details-cell/CL0000912), or T-helper cell, is an effector [T cell](/details-cell/CL0000084) that modulates the activity of other immune cells, primarily through the secretion of cytokines. **Overall**, the transcriptional profile of this cell type is distinguished by a highly specific set of markers, many of which are non-coding RNAs or genes not classically associated with T-cell immunity. The top marker based on expression specificity (`csi_z`) is the antisense RNA [UXT AS1](/details-gene/100133957), suggesting that a complex regulatory network is fundamental to defining the identity and function of this cell population. The presence of a T-cell receptor variable gene, [TRAV39](/details-gene/28642), among the top markers confirms its T-lymphocyte lineage. ## Key Characteristics and Function Analysis of the most specific gene markers provides insight into the core functional programs of the [helper T cell](/details-cell/CL0000912). These can be grouped into several key themes: * **T-Cell Lineage and Antigen Recognition:** The high specificity score for [TRAV39](/details-gene/28642) (CSI: 65.48) is consistent with this cell's identity as an alpha-beta T lymphocyte, equipping it for antigen recognition via the T-cell receptor complex. * **Complex Transcriptional Regulation:** A striking feature of this cell's signature is the predominance of non-coding and antisense RNAs among its most specific markers. Top hits like [UXT AS1](/details-gene/100133957) (CSI: 70.72), [TMEM123 DT](/details-gene/101928424) (CSI: 62.06), [LINC02679](/details-gene/105378385) (CSI: 52.99), and [TTC7B AS1](/details-gene/101928909) (CSI: 51.18) suggest that post-transcriptional and epigenetic regulation are critical for maintaining the helper T cell state and controlling its functions. * **Cell Adhesion and Interaction:** Several highly specific markers are involved in cell adhesion, including [PCDHB15](/details-gene/56121) (CSI: 35.08), [CSMD2](/details-gene/114784) (CSI: 28.33), and [CDH19](/details-gene/28513) (CSI: 27.66). This enrichment suggests that direct physical interactions with other cells are a key aspect of helper T cell function, complementing their role as cytokine producers. * **Metabolic and Developmental Pathways:** The profile includes genes typically associated with functions outside of canonical immunity. For instance, [UGT1A8](/details-gene/54576) (CSI: 48.56) is a UDP-glucuronosyltransferase involved in metabolizing xenobiotics and endobiotics, which may indicate a specialized metabolic function in this cell type [Link](https://doi.org/10.1074/jbc.273.15.8719). Similarly, the developmental gene [GDF3](/details-gene/9573) (CSI: 61.77) shows high specificity, suggesting a potential role in T-cell differentiation or plasticity. The anti-marker profile further refines the cell's identity. The significant negative CSI for genes like [IL31](/details-gene/386653) and the cytokine-related gene [CCL17](/details-gene/6361) indicates that this helper T cell population is not actively participating in certain types of inflammatory responses, such as those seen in atopic dermatitis [Link](https://doi.org/10.1038/ni1084). Furthermore, the low significance of the immediate early gene [FOS](/details-gene/2353) is consistent with a non-acutely-activated or resting state. ## Clinical Significance and Contextual Roles **Overall**, the gene signature of the [helper T cell](/details-cell/CL0000912) points to several areas of clinical relevance, although direct connections require further investigation. The high specificity of numerous uncharacterized non-coding RNAs, such as [UXT AS1](/details-gene/100133957) and [LOC101928940](/details-gene/101928940), positions them as potential high-fidelity biomarkers for quantifying or isolating helper T cell populations in health and disease. Several top marker genes have tentative links to human pathology, though often in different biological contexts. * [CSMD2](/details-gene/114784), a top marker, has been investigated as a putative tumor suppressor gene, particularly in nervous system tumors [Link](https://doi.org/10.1016/s0888-7543(03)00149-6). Its specific expression in helper T cells may be relevant to their role in cancer immunosurveillance. * The gene [STRC](/details-gene/161497), encoding stereocilin, is highly specific to this cell. Mutations in [STRC](/details-gene/161497) are known to cause a form of non-syndromic deafness and male infertility [Link](https://doi.org/10.1136/jmg.2006.045765). Its specific expression in an immune cell is unexpected and could point to a previously unknown function in T-cell biology. * [PRND](/details-gene/23627), encoding the PrP-like protein doppel, has been implicated in neurodegeneration in certain contexts, particularly when the prion protein is absent [Link](https://doi.org/10.1006/jmbi.1999.3108). Its specific expression here warrants further investigation into its potential immunological role. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The identity and functional state of this [helper T cell](/details-cell/CL0000912) population are maintained by a specific and complex network of non-coding and antisense RNAs that regulate the expression of key functional genes. * **Surprising Findings:** The most specific molecular markers for this cell type are not traditional immune effectors like cytokines or surface receptors, but rather regulatory RNAs like [UXT AS1](/details-gene/100133957) and [LINC02679](/details-gene/105378385). This suggests that our understanding of helper T cell identity, which is largely based on protein-coding genes, may be incomplete. * **Testable Questions:** Does targeted degradation of [UXT AS1](/details-gene/100133957) or [TMEM123 DT](/details-gene/101928424) in primary human helper T cells, using antisense oligonucleotides or CRISPR-Cas13, lead to a change in their characteristic cytokine secretion profile (e.g., IFN-gamma, IL-4, IL-2) upon stimulation? 2. **Hypothesis:** Helper T cells possess non-canonical functions related to metabolic regulation and cell-cell adhesion, mediated by the expression of highly specific but unconventional genes like [UGT1A8](/details-gene/54576) and [PCDHB15](/details-gene/56121). * **Surprising Findings:** The high expression specificity of a glucuronidation enzyme ([UGT1A8](/details-gene/54576)) and a protocadherin ([PCDHB15](/details-gene/56121)) is unexpected in a lymphoid cell. This challenges the conventional view of helper T cells acting solely through cytokine signaling and canonical adhesion molecules (e.g., integrins). * **Testable Questions:** Can helper T cells metabolize specific substrates for [UGT1A8](/details-gene/54576), and does this metabolic activity influence the function of neighboring cells in a co-culture system? Furthermore, does the expression of [PCDHB15](/details-gene/56121) mediate homotypic or heterotypic cell adhesion, and is this interaction important for the formation of the immunological synapse?