Details for: LINC02257

Gene ID: 105372950

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: LINC02257

Ensembl ID: ENSG00000232679

Description: long intergenic non-protein coding RNA 2257

Cell Significance Landscape

Significant Cells

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

  • VIP GABAergic cortical interneuron CL4023016
    CSI 4.68
    rCSI 5.58%
    PRS 99.93
  • pancreatic stellate cell CL0002410
    CSI 3.74
    rCSI 21.77%
    PRS 99.87

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.

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  • Node Color (Target Cell CSI, relative to current network):
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    • High
    • Medium
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    • 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 [LINC02257](/details-gene/105372950) is a long intergenic non-protein coding RNA (lncRNA) located on chromosome 1q41. Current data indicates that its function is not well characterized. However, its expression profile suggests highly specific roles within distinct cellular contexts. **Overall**, it shows significant expression in neuronal populations, specifically [VIP GABAergic cortical interneuron](/details-cell/CL4023016), and also in mesenchymal-like cells such as the [pancreatic stellate cell](/details-cell/CL0002410). This dual-tissue specificity points towards potentially divergent regulatory functions in the central nervous system and the pancreas. ## Cellular Roles and Expression Landscape The expression pattern of [LINC02257](/details-gene/105372950) is highly restricted, suggesting it may serve as a specific functional marker for a limited number of cell types. Its most significant expression is observed in [VIP GABAergic cortical interneuron](/details-cell/CL4023016) (CSI: 4.68), a class of inhibitory neurons crucial for regulating cortical circuits and sensory processing. This strong association suggests a potential role for [LINC02257](/details-gene/105372950) in establishing or maintaining the specialized function of these interneurons. Interestingly, [LINC02257](/details-gene/105372950) is also a significant marker in [pancreatic stellate cell](/details-cell/CL0002410) (CSI: 3.74). These cells are key mediators of extracellular matrix remodeling and fibrosis in the pancreas, particularly in response to injury or in the context of pancreatic cancer. The notable expression in this cell type, which is functionally distinct from cortical neurons, implies that [LINC02257](/details-gene/105372950) may be involved in disparate biological processes, such as synaptic regulation in the brain and tissue remodeling in the pancreas. ## Pathways and Molecular Function The specific molecular functions and biological pathways involving [LINC02257](/details-gene/105372950) are currently uncharacterized in major annotation databases such as Gene Ontology (GO) and Reactome. As a lncRNA, it is hypothesized to function through regulatory mechanisms, such as guiding chromatin-modifying complexes to specific genomic loci, acting as a molecular sponge for microRNAs, or scaffolding protein complexes. Its cell-specific expression allows for the generation of hypotheses regarding its function; in [VIP GABAergic cortical interneuron](/details-cell/CL4023016), it might regulate genes involved in GABA synthesis or release, while in [pancreatic stellate cell](/details-cell/CL0002410), it could influence pathways related to TGF-beta signaling and collagen production. ## Research Directions The highly specific expression of [LINC02257](/details-gene/105372950) in functionally important cell types that are implicated in both neurological and fibrotic diseases makes it a compelling subject for further investigation. ### Proposed Hypotheses 1. **Neurological Function:** [LINC02257](/details-gene/105372950) acts as a critical regulator of gene expression programs that define the identity and function of [VIP GABAergic cortical interneuron](/details-cell/CL4023016). Its knockdown may lead to defects in inhibitory neurotransmission and disrupt the excitatory-inhibitory balance in cortical circuits. 2. **Role in Pancreatic Fibrosis:** [LINC02257](/details-gene/105372950) is a pro-fibrotic lncRNA whose expression is induced in [pancreatic stellate cell](/details-cell/CL0002410) upon tissue injury. It may promote their activation, proliferation, and deposition of extracellular matrix components, thereby contributing to the pathology of chronic pancreatitis and the desmoplastic stroma of pancreatic cancer. ### Suggested Experimental Approach To test the hypothesis of its role in pancreatic fibrosis, a loss-of-function study could be performed. Primary human [pancreatic stellate cell](/details-cell/CL0002410) could be transfected with antisense oligonucleotides (ASOs) targeting [LINC02257](/details-gene/105372950). Following knockdown, the cells would be stimulated with TGF-beta1, a potent activator. The impact on stellate cell activation could be assessed by measuring the expression of key fibrotic markers (e.g., *ACTA2*, *COL1A1*) via qPCR and Western blot, and by performing functional assays such as cell migration and collagen gel contraction assays. ### Therapeutic Potential Given its highly restricted expression profile, [LINC02257](/details-gene/105372950) presents an attractive therapeutic target. If it is validated as a pro-fibrotic factor in the pancreas, its **inhibition** could be a strategy to mitigate pancreatic fibrosis. As a lncRNA, it is amenable to targeting with nucleic acid-based drugs like ASOs, which can be designed for high specificity. This specificity, combined with the gene's limited expression pattern, could potentially minimize off-target effects, making it a promising candidate for developing therapies against fibrotic diseases of the pancreas.