Details for: LINC02694

Gene ID: 400359

Gene Type:  ncRNA (Non-coding RNA)  - A functional RNA molecule that is transcribed from DNA but not translated into a protein. Includes classes like miRNA and lncRNA.

Symbol: LINC02694

Ensembl ID: ENSG00000175779

Description: long intergenic non-protein coding RNA 2694

Cell Significance Landscape

Significant Cells

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

  • mature T cell CL0002419
    CSI 11.58
    rCSI 9.01%
    PRS 99.62
  • kidney connecting tubule epithelial cell CL1000768
    CSI 5.06
    rCSI 12.84%
    PRS 97.98
  • renal principal cell CL0005009
    CSI 4.86
    rCSI 12.62%
    PRS 98.79
  • renal beta-intercalated cell CL0002201
    CSI 4.24
    rCSI 10.11%
    PRS 98.73
  • kidney loop of Henle thin descending limb epithelial cell CL1001111
    CSI 3.1
    rCSI 4.39%
    PRS 98.39
  • suprabasal keratinocyte CL4033013
    CSI 2.49
    rCSI 4.06%
    PRS 87.53
  • epithelial cell of proximal tubule CL0002306
    CSI 2.19
    rCSI 5.35%
    PRS 96.7
  • megakaryocyte CL0000556
    CSI 2.19
    rCSI 9.49%
    PRS 97.82
  • basal cell of epidermis CL0002187
    CSI 2.05
    rCSI 3.64%
    PRS 85.74
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 1.88
    rCSI 5.39%
    PRS 99.76
  • helper T cell CL0000912
    CSI 1.6
    rCSI 2.27%
    PRS 95.78
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.85
    rCSI 3.21%
    PRS 95.63
  • kidney loop of Henle thick ascending limb epithelial cell CL1001106
    CSI 0.81
    rCSI 7.02%
    PRS 97.35
  • kidney distal convoluted tubule epithelial cell CL1000849
    CSI 0.45
    rCSI 4.79%
    PRS 97.52
  • indirect pathway medium spiny neuron CL4023029
    CSI 0.35
    rCSI 8.47%
    PRS 94.21

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

Explore relationships of the current gene. Select an Interaction Source: 'ONTOLOGY' for shared pathways (GO/Reactome) or 'STRING' for protein-protein interactions. Further refine by selecting context genes and comparing Cell Significance Index (CSI) scores between baseline and target cell types and their specific contexts.

Comma-separated if multiple.
Comma-separated if multiple.
Legend:
  • Query Gene
  • Node Color (Target Cell CSI, relative to current network):
    • Very High
    • High
    • Medium
    • Low
    • Very Low
    • CSI N/A
  • Node Size: Proportional to Target Cell CSI magnitude
  • STRING PPI Edge
  • 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 [LINC02694](/details-gene/400359) is a long non-coding RNA located on chromosome 15q14. Analysis of its expression profile reveals a highly specific and significant role in the immune system, particularly within the T cell lineage. The gene's Cell Significance Index (CSI) is exceptionally high in [mature T cell](/details-cell/CL0002419), suggesting it may be a critical component of T cell identity or function. Additionally, [LINC02694](/details-gene/400359) shows notable significance in various epithelial cell types of the kidney and skin, indicating potential roles in renal physiology and epidermal homeostasis. ## Cellular Roles and Expression Landscape **Overall**, the expression landscape of [LINC02694](/details-gene/400359) is dominated by its profound significance in the T cell compartment. It stands out as a top marker in [mature T cell](/details-cell/CL0002419) (CSI: 11.58), with related subtypes such as [effector CD4-positive, alpha-beta T cell](/details-cell/CL0001044) (CSI: 1.88) and [helper T cell](/details-cell/CL0000912) (CSI: 1.60) also showing significant expression. This strong and specific signature points towards a fundamental role in T cell biology. Beyond the immune system, [LINC02694](/details-gene/400359) exhibits a distinct secondary pattern of significance in renal epithelial cells. It is consistently expressed in cells along the nephron, including [kidney connecting tubule epithelial cell](/details-cell/CL1000768) (CSI: 5.06), [renal principal cell](/details-cell/CL0005009) (CSI: 4.86), [renal beta-intercalated cell](/details-cell/CL0002201) (CSI: 4.24), and [epithelial cell of proximal tubule](/details-cell/CL0002306) (CSI: 2.19), suggesting a potential function in kidney transport or maintenance. A third notable context is its expression in epidermal cells, such as [suprabasal keratinocyte](/details-cell/CL4033013) (CSI: 2.49) and [basal cell of epidermis](/details-cell/CL0002187) (CSI: 2.05). Conversely, its low significance in neuronal cell types, like [near-projecting glutamatergic cortical neuron](/details-cell/CL4023012) (CSI: 0.85), highlights its specialized role outside of the central nervous system. ## Pathways and Molecular Function Based on the provided data, specific functional annotations from pathway databases are not available. However, the distinct cell-type specific expression pattern of [LINC02694](/details-gene/400359) allows for functional inference. Its high significance in T cells strongly suggests involvement in processes central to adaptive immunity, such as T cell receptor signaling, cytokine production, differentiation, or cellular homeostasis. The consistent expression across multiple renal epithelial cell types implies a potential role in ion transport, pH balance, or the maintenance of epithelial integrity within the kidney. ## Research Directions The highly specific expression profile of [LINC02694](/details-gene/400359), particularly its dominance in T cells, presents several avenues for future investigation. **Proposed Hypotheses:** 1. The exceptionally high CSI of [LINC02694](/details-gene/400359) in [mature T cell](/details-cell/CL0002419) indicates it is a critical regulator of T-cell quiescence or the transition to an activated effector state upon antigen encounter. 2. [LINC02694](/details-gene/400359)'s consistent expression across multiple kidney tubule epithelial cells suggests it functions as a master regulator of a common physiological process, such as coordinating solute transport or maintaining cell polarity in the nephron. **Suggested Experimental Approach:** To test the hypothesis that [LINC02694](/details-gene/400359) is a key regulator of T-cell activation (Hypothesis 1), a loss-of-function study could be performed. Primary human T cells could be isolated and treated with antisense oligonucleotides (ASOs) or transduced with lentiviral shRNA constructs to specifically knock down [LINC02694](/details-gene/400359) expression. These cells would then be stimulated *in vitro* via their T-cell receptor (e.g., using anti-CD3/CD28 beads). The functional consequences of the knockdown could be assessed by measuring proliferation (e.g., CFSE dye dilution), cytokine secretion (e.g., IL-2, IFN-γ via ELISA), and the expression of key activation markers (e.g., CD69, CD25 via flow cytometry) compared to control cells. **Therapeutic Potential:** As a long non-coding RNA with high specificity for T cells, [LINC02694](/details-gene/400359) represents a non-traditional but potentially valuable therapeutic target. If its function is to restrain T-cell activation, its inhibition could be explored as a strategy to enhance anti-tumor immunity. Conversely, if it promotes T-cell effector functions, its inhibition could be a therapeutic approach for T-cell-mediated autoimmune diseases. Its lncRNA nature makes it amenable to targeting with nucleic acid-based therapeutics like ASOs, which could offer high specificity in modulating T-cell responses.