Details for: CL0000451

Cell ID: CL0000451

Cell Name: dendritic cell

Description: A cell of hematopoietic origin, typically resident in particular tissues, specialized in the uptake, processing, and transport of antigens to lymph nodes for the purpose of stimulating an immune response via T cell activation. These cells are lineage negative (CD3-negative, CD19-negative, CD34-negative, and CD56-negative).

Synonyms: interdigitating cell, veiled 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 dendritic 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 dendritic 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 dendritic 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 dendritic 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:  dendritic cell (CL0000451)

 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 [dendritic cell](/details-cell/CL0000451) is a specialized hematopoietic cell critical for initiating adaptive immune responses through the processing and presentation of antigens to T-cells. The gene significance profile, based on expression specificity (**Overall**), suggests that its identity is defined not only by its core immunological machinery, such as components of the MHC system like [B2M](/details-gene/567) and [HLA DPA1](/details-gene/3113), but also by an exceptionally high level of basal metabolic activity and protein synthesis. The prominence of numerous mitochondrial, ribosomal, and cytoskeletal genes as top markers indicates that [dendritic cells](/details-cell/CL0000451) are maintained in a state of high metabolic and structural readiness, poised for rapid activation, antigen processing, and migration. ## Key Characteristics and Function Analysis of top marker genes, ranked by expression specificity (`csi_z`), reveals several core functional clusters that define the [dendritic cell](/details-cell/CL0000451) phenotype. * **Antigen Presentation Machinery:** As expected for a professional antigen-presenting cell, genes integral to this process are highly significant. [B2M](/details-gene/567), the light chain of MHC class I molecules, is the top marker, underscoring its role in presenting endogenous antigens. The significance of [HLA DPA1](/details-gene/3113), an MHC class II alpha chain, confirms its critical function in presenting exogenous antigens to helper T-cells. * **High Metabolic Activity:** A large number of top markers are associated with mitochondrial respiration and energy production. These include multiple subunits of the cytochrome-c oxidase complex ([COX1](/details-gene/4512), [COX4I1](/details-gene/1327), [COX7C](/details-gene/1350), [COX2](/details-gene/4513)) and ATP synthase ([ATP5F1E](/details-gene/514), [ATP5MG](/details-gene/10632)). This metabolic signature suggests a high energy demand, likely fueling processes such as antigen uptake (phagocytosis/endocytosis), protein synthesis for antigen processing, and migration to lymphoid organs. * **Robust Protein Synthesis and Turnover:** The high specificity scores for genes involved in mRNA processing and translation, such as [PABPC1](/details-gene/26986) and translation elongation factors [EEF1B2](/details-gene/1933) and [EEF1D](/details-gene/1936), point to a high capacity for protein production. This is essential for synthesizing MHC molecules, cytokines, and processing vast numbers of peptides for antigen display. The high rank of [OAZ1](/details-gene/4946), an ornithine decarboxylase antizyme, also suggests tight regulation of polyamine synthesis, which is linked to cell growth and proliferation. * **Cytoskeletal Dynamics and Motility:** The significance of [CFL1](/details-gene/1072) (cofilin 1) and [MYL6](/details-gene/4637) (myosin light chain 6) highlights the importance of a dynamic actin cytoskeleton. This is crucial for the cell's ability to sample its environment, engulf antigens, and migrate from peripheral tissues to lymph nodes to initiate T-cell activation. * **Iron Homeostasis and Stress Response:** The high ranking of ferritin light and heavy chain genes ([FTL](/details-gene/2512) and [FTH1](/details-gene/2495)) indicates a significant role in iron sequestration and management. This may serve to limit iron availability to pathogens and protect the cell from oxidative damage. Furthermore, the expression of [GSTP1](/details-gene/2950) suggests a prepared state to counteract reactive oxygen species, which are common in inflammatory microenvironments. The Anti-Marker profile reinforces the [dendritic cell's](/details-cell/CL0000451) distinct lineage. The lack of significant expression for genes like [MPO](/details-gene/4353) and [NCF2](/details-gene/4688) distinguishes it from neutrophils, while the absence of immunoglobulin genes ([IGLV1 44](/details-gene/28823), [IGLV2 23](/details-cell/28813)) confirms its separation from the B-cell lineage. ## Clinical Significance and Contextual Roles **Overall**, the gene profile portrays the [dendritic cell](/details-cell/CL0000451) as a central metabolic and biosynthetic hub of the immune system. Its high basal activity suggests that disruptions in fundamental cellular processes, such as energy metabolism or protein synthesis, could severely compromise its immune surveillance capabilities. For example, impaired mitochondrial function could reduce its ability to migrate or effectively stimulate T-cells, potentially leading to immunodeficiency or poor vaccine responses. The significant expression of genes involved in iron homeostasis ([FTH1](/details-gene/2495), [FTL](/details-gene/2512)) and oxidative stress response ([GSTP1](/details-gene/2950)) suggests these cells play a protective role within inflamed tissues. In chronic inflammatory diseases or cancer, the dysregulation of these pathways could impact not only the dendritic cell's function but also the broader tissue microenvironment. The role of [YBX1](/details-gene/4904), a DNA/RNA-binding protein implicated in transcription and translation, further suggests that the cell's response to environmental signals is complex and tightly regulated at multiple levels of gene expression. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The defining characteristic of a [dendritic cell](/details-cell/CL0000451), as indicated by `csi_z` scores, is not the expression of a few unique proteins, but rather a quantitatively distinct, elevated basal state of core metabolic and biosynthetic pathways. This "metabolic readiness" is a prerequisite for its sentinel function, allowing for a rapid and robust response upon encountering an antigen. * **Surprising Findings:** The most specific gene markers are not classic immune-restricted surface molecules (e.g., CD83, CCR7) but are ubiquitous "housekeeping" genes related to energy, protein synthesis, and iron storage. This suggests that the unique identity of this cell type lies in its exceptionally high steady-state activity of these core cellular processes. * **Testable Questions:** How does the absolute quantification of mitochondrial mass, protein synthesis rate, and intracellular iron content in resting [dendritic cells](/details-cell/CL0000451) compare to that of other phagocytes, such as macrophages? Do genetic or pharmacological perturbations of these housekeeping pathways disproportionately affect dendritic cell maturation and T-cell priming capacity? 2. **Hypothesis:** The high specificity of iron-sequestering proteins ([FTH1](/details-gene/2495), [FTL](/details-gene/2512)) suggests that dendritic cells actively contribute to nutritional immunity by locally depleting iron. This function may be as important as antigen presentation in controlling microbial growth in the early stages of infection, directly shaping the inflammatory microenvironment. * **Surprising Findings:** The prominence of ferritin genes as specific markers elevates iron metabolism from a supportive housekeeping function to a potential primary effector role for [dendritic cells](/details-cell/CL0000451), a role more traditionally ascribed to macrophages. * **Testable Questions:** Does the targeted knockout of [FTH1](/details-gene/2495) in dendritic cells alter their ability to control the replication of iron-dependent intracellular bacteria (e.g., *Salmonella*) *in vitro*? Does this also impair their ability to present antigens derived from these pathogens?