Details for: CL0000084

Cell ID: CL0000084

Cell Name: T cell

Description: A type of lymphocyte whose defining characteristic is the expression of a T cell receptor complex.

Synonyms: T lymphocyte, T-cell, T-lymphocyte, immature T cell, mature T cell

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 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 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 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 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:  T cell (CL0000084)

 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.

Loading network (please wait)...

## Summary The [T cell](/details-cell/CL0000084), a lymphocyte defined by its expression of a T cell receptor (TCR) complex, is a cornerstone of the adaptive immune system. **Overall**, the gene significance profile underscores this identity, highlighting genes essential for antigen recognition, signaling, and effector functions. The top marker, [B2M](/details-gene/567), a component of MHC class I molecules, along with canonical T cell markers such as [CD3E](/details-gene/916), [PTPRC](/details-gene/5788), and [IL7R](/details-gene/3575), confirm its role in immune surveillance and response. Beyond these immune-centric genes, the analysis also reveals a striking specificity for genes involved in protein translation and cytoskeletal dynamics, suggesting that a state of high metabolic and structural readiness is a fundamental characteristic of this cell type. ## Key Characteristics and Function Analysis of the top marker genes, ranked by expression specificity (CSI Z-Score), reveals several core functional clusters that define the [T cell](/details-cell/CL0000084). * **T Cell Identity, Signaling, and Survival:** A suite of genes fundamental to the T cell lineage is highly specific. This includes [CD3E](/details-gene/916), an integral component of the TCR complex required for antigen recognition. [PTPRC](/details-gene/5788) (CD45), a tyrosine phosphatase, is crucial for modulating the threshold of TCR signaling. Furthermore, the high specificity of [IL7R](/details-gene/3575), the receptor for interleukin-7, points to its indispensable role in T cell development and homeostatic survival, a finding supported by research linking its deficiency to severe immunodeficiency ([Link](https://pubmed.ncbi.nlm.nih.gov/9843216/)). Early activation is represented by [CD69](/details-gene/969), indicating a population of cells that may have recently encountered antigen or are in a state of readiness. * **Effector Function and Immune Communication:** The data highlights a strong signature for immune effector capabilities. Genes such as [NKG7](/details-gene/4818) and [B2M](/details-gene/567) are associated with cytotoxic responses. The cell's role as a communicator within the immune system is underscored by the high specificity of the chemokine [CCL5](/details-gene/6352) and the cytokine [IL32](/details-gene/9235), which are critical for recruiting and activating other immune cells, consistent with the T cell's function as an orchestrator of inflammatory responses ([Link](https://pubmed.ncbi.nlm.nih.gov/2456327/), [Link](https://pubmed.ncbi.nlm.nih.gov/15664165/)). * **Translational and Metabolic Readiness:** A prominent and somewhat unexpected feature is the high specificity of genes involved in fundamental cellular processes. Multiple components of the translational machinery, including elongation factors [EEF1B2](/details-gene/1933) and [EEF1D](/details-gene/1936), and the poly(A)-binding protein [PABPC1](/details-gene/26986), are top markers. This is complemented by the specificity of genes involved in energy metabolism, such as [COX1](/details-gene/4512) and [ATP5F1E](/details-gene/514). This collective signature suggests that [T cells](/details-cell/CL0000084) are maintained in a state of high translational and metabolic potential, allowing for the rapid synthesis of effector molecules upon activation. * **Cytoskeletal Dynamics and Cell Interaction:** The high ranking of [CORO1A](/details-gene/11151), essential for immunological synapse formation ([Link](https://pubmed.ncbi.nlm.nih.gov/7758584/)), and other cytoskeletal-related genes like [CFL1](/details-gene/1072) indicates that cellular motility and the capacity for dynamic cell-cell interaction are defining features. This structural preparedness is vital for immune surveillance, migration to sites of inflammation, and establishing effective contact with antigen-presenting cells. The profile of anti-markers further refines the T cell's identity. The low specificity for key interferon-stimulated genes like [ISG15](/details-gene/9636) and the transcription factor [IRF1](/details-gene/3659) may suggest that the **Overall** profile represents a population not undergoing a strong, active type I interferon response. ## Clinical Significance and Contextual Roles The gene significance profile of the [T cell](/details-cell/CL0000084) has direct clinical relevance, highlighting both therapeutic targets and markers of disease. * **Therapeutic Targets:** Several top markers are established targets in clinical practice. [CD52](/details-gene/1043) is the target of Alemtuzumab, a monoclonal antibody used to deplete lymphocytes in treatments for chronic lymphocytic leukemia and multiple sclerosis. Similarly, [PTPRC](/details-gene/5788) (CD45) is a pan-leukocyte marker ubiquitously used in flow cytometry for diagnosing and monitoring hematological malignancies and immune disorders. * **Immunodeficiency:** The high significance of [IL7R](/details-gene/3575) reinforces its critical, non-redundant role in human immunity. Mutations in this gene are a known cause of T-B+NK+ severe combined immunodeficiency (SCID), a life-threatening condition characterized by a profound lack of [T cells](/details-cell/CL0000084) ([Link](https://pubmed.ncbi.nlm.nih.gov/9843216/)). * **Inflammation and Autoimmunity:** The prominence of effector molecules like the chemokine [CCL5](/details-gene/6352) is consistent with the central role of [T cells](/details-cell/CL0000084) in driving inflammation. Overproduction of [CCL5](/details-gene/6352) by [T cells](/details-cell/CL0000084) is implicated in the pathogenesis of numerous autoimmune and inflammatory diseases, including rheumatoid arthritis and atherosclerosis, making it a potential biomarker and therapeutic target. The cytokine [IL32](/details-gene/9235) is also a known pro-inflammatory mediator, further emphasizing the T cell's capacity to initiate and sustain inflammatory cascades. The **Overall** profile serves as a foundational blueprint of T cell identity, from which deviations in disease states (e.g., cancer, infection) can be measured to identify pathological shifts in function. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The distinct specificity of multiple translation-related genes ([PABPC1](/details-gene/26986), [EEF1B2](/details-gene/1933), [EEF1D](/details-gene/1936)) suggests that [T cells](/details-cell/CL0000084) are defined by a state of "primed translational readiness." This heightened basal capacity for protein synthesis may be a key determinant of their ability to rapidly execute effector functions, such as secreting large quantities of cytokines, upon TCR engagement. * **Surprising Findings:** It is notable that general translational machinery components rank as more specific markers for [T cells](/details-cell/CL0000084) than some well-known immune-specific surface proteins. This implies that the regulation of protein synthesis capacity, not just the expression of specific immune receptors, is a core element of T cell identity. * **Testable Questions:** Does selective pharmacological or genetic inhibition of EEF1B2 or PABPC1 disproportionately impair the speed and magnitude of cytokine production in newly activated [T cells](/details-cell/CL0000084) compared to other hematopoietic cells like [B cells](/details-cell/CL0000091) or monocytes? 2. **Hypothesis:** The high specificity of genes controlling actin dynamics, particularly [CORO1A](/details-gene/11151), indicates that the constitutive maintenance of a highly dynamic cytoskeleton is a fundamental aspect of the T cell's state. This is likely not just for immunological synapse formation but also for continuous immune surveillance, which requires constant motility and environmental scanning. * **Surprising Findings:** In this dataset, [CORO1A](/details-gene/11151) demonstrates a maximal effect size (+1.0000), suggesting its expression is exceptionally restricted to this cell lineage. This makes it a potentially superior biomarker for T cell identity in this context compared to other classical markers that may show broader expression. * **Testable Questions:** Using high-resolution live-cell imaging, can biophysical parameters of actin network dynamics, as regulated by [CORO1A](/details-gene/11151), be used to quantitatively distinguish between naive, effector, and memory [T cell](/details-cell/CL0000084) functional states?