Details for: DUXB

Gene ID: 100033411

Gene Type:  Protein-coding  - A gene that serves as a template for producing a messenger RNA (mRNA) molecule, which is then translated into a functional protein.

Symbol: DUXB

Ensembl ID: ENSG00000282757

Description: double homeobox B

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Associated with

Significant Cells

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

  • melanocyte of skin CL1000458
    CSI 2.09
    rCSI 2.84%
    PRS 99.37

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.
Network Configuration

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  • Node Color (Target Cell CSI, relative to current network):
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  • Node Size: Proportional to Target Cell CSI magnitude
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  • Shared Pathway Edge (ONTOLOGY)

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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 [DUXB](/details-gene/100033411) is a protein-coding gene that encodes a double homeobox B transcription factor. Functional annotations strongly link it to fundamental developmental processes, including the regulation of transcription during zygotic genome activation. Consistent with its role as a transcription factor, [DUXB](/details-gene/100033411) is localized to the nucleus and specifically binds DNA to regulate RNA polymerase II activity. Expression data indicates a highly specific role, with its most significant expression observed in the [melanocyte of skin](/details-cell/CL1000458), suggesting a potential function in this differentiated cell lineage beyond its established role in early embryogenesis. ## Cellular Roles and Expression Landscape The expression profile of [DUXB](/details-gene/100033411) suggests a highly specialized function. **Overall**, the gene's expression is most significant in [melanocyte of skin](/details-cell/CL1000458) (CSI: 2.09), identifying it as a specific marker for this cell type. This finding is particularly notable given the gene's well-annotated role in early embryonic development, suggesting it may be re-purposed or play a distinct role in the biology and maintenance of this neural crest-derived lineage. The available data points towards a narrow expression pattern, implying that its activity is tightly restricted to specific cellular contexts. ## Pathways and Molecular Function [DUXB](/details-gene/100033411) functions as a sequence-specific DNA-binding transcription factor. Gene Ontology annotations confirm its molecular function in [Dna-binding transcription factor activity, rna polymerase ii-specific](/details-go/GO:0000981) and its involvement in the [Regulation of transcription by rna polymerase ii](/details-go/GO:0006357). The protein carries out this function within the [Nucleus](/details-go/GO:0005634) and specifically the [Nucleoplasm](/details-go/GO:0005654). The biological processes associated with [DUXB](/details-gene/100033411) are centered on early embryogenesis. It is a documented component of pathways critical for [Developmental biology](/details-pathway/R-HSA-1266738), including the [Maternal to zygotic transition (mzt)](/details-pathway/R-HSA-9816359) and [Zygotic genome activation (zga)](/details-pathway/R-HSA-9819196). These pathways are fundamental events where the developing embryo's own genome begins to be transcribed, taking over from maternally supplied RNAs and proteins. The expression of a ZGA-associated transcription factor in adult melanocytes suggests a potential role in maintaining a specific transcriptional program in this differentiated cell type. ## Research Directions The juxtaposition of [DUXB](/details-gene/100033411)'s established role in zygotic genome activation with its specific expression in adult melanocytes raises important questions about its function in this somatic cell lineage. ### Proposed Hypotheses: 1. **Lineage Maintenance:** [DUXB](/details-gene/100033411) may be co-opted post-embryonically to play a crucial role in maintaining the identity, differentiation state, or survival of [melanocytes of skin](/details-cell/CL1000458) by regulating a specific set of target genes distinct from its embryonic function. 2. **Pathological Reactivation:** The expression of [DUXB](/details-gene/100033411) in melanocytes could represent a "stem-like" signature. Its aberrant re-expression or dysregulation in these cells might contribute to melanoma development by reactivating a primitive transcriptional program that promotes cellular plasticity and proliferation. ### Experimental Approach: To test the hypothesis that [DUXB](/details-gene/100033411) is involved in melanocyte lineage maintenance, a loss-of-function study could be performed. Using a CRISPR-Cas9 or shRNA-based approach to silence [DUXB](/details-gene/100033411) expression in primary human melanocyte cultures, researchers could then perform RNA-sequencing to identify downstream transcriptional changes and cellular assays to measure impacts on key melanocyte functions, such as pigmentation (melanin synthesis), proliferation, and migratory behavior. ### Therapeutic Potential: Given its role as a transcription factor and its highly specific expression pattern, [DUXB](/details-gene/100033411) could represent a context-dependent therapeutic target. If its expression is confirmed to be elevated in melanoma and functionally linked to disease progression, it would be a candidate for inhibition. However, as a nuclear transcription factor, it is a challenging target for traditional small molecules. Therapeutic strategies might instead focus on developing inhibitors of key downstream effectors or exploring novel modalities like antisense oligonucleotides to reduce its expression in a targeted manner.