Details for: A1BG AS1

Gene ID: 503538

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: A1BG AS1

Ensembl ID: ENSG00000268895

Description: A1BG antisense RNA 1

Cell Significance Landscape

Significant Cells

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

  • choroid plexus epithelial cell CL0000706
    CSI 3.43
    rCSI 5.61%
    PRS 98.37
  • microcirculation associated smooth muscle cell CL0008035
    CSI 1.68
    rCSI 4.87%
    PRS 99.34

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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    • 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 [A1BG AS1](/details-gene/503538) is a non-coding antisense RNA (ncRNA) located on chromosome 19. As an antisense transcript to the protein-coding gene A1BG, its primary function is presumed to be the regulation of A1BG expression. **Overall**, expression data indicates a highly specific enrichment of [A1BG AS1](/details-gene/503538) in specialized cell types, most notably the [choroid plexus epithelial cell](/details-cell/CL0000706), suggesting a potential role in the central nervous system, particularly in functions related to the blood-cerebrospinal fluid barrier. ## Cellular Roles and Expression Landscape The expression profile of [A1BG AS1](/details-gene/503538) points to a specialized role within specific cellular contexts. **Overall**, the gene shows its most significant expression in [choroid plexus epithelial cells](/details-cell/CL0000706) (CSI: 3.43), which are critical for the production of cerebrospinal fluid (CSF) and maintaining the integrity of the blood-CSF barrier. This strong, cell-type-specific signal suggests that [A1BG AS1](/details-gene/503538) may be involved in regulating the unique physiological functions of these neuroepithelial cells. A secondary, albeit lower, significance is observed in [microcirculation associated smooth muscle cells](/details-cell/CL0008035) (CSI: 1.68). This finding suggests a potential, less prominent role for the gene in the regulation of vascular tone or homeostasis within small blood vessels. The available data is limited, and further investigation is required to determine its expression profile across a broader range of tissues and cell types to fully define its specificity. ## Pathways and Molecular Function Specific pathway annotations for [A1BG AS1](/details-gene/503538) are not available in the provided dataset. However, based on its classification as an antisense ncRNA, its principal molecular function is likely the post-transcriptional regulation of its sense-strand counterpart, the A1BG gene. This regulation can occur through various mechanisms, including RNA interference leading to mRNA degradation, translational repression by blocking ribosome access, or influencing A1BG pre-mRNA splicing. The biological consequence of this regulation in [choroid plexus epithelial cells](/details-cell/CL0000706) remains to be elucidated but is likely tied to the functions of the A1BG protein in that specific cellular environment. ## Research Directions The specific enrichment of [A1BG AS1](/details-gene/503538) in the choroid plexus provides a clear path for future investigation into its role in central nervous system homeostasis and disease. **Proposed Hypotheses:** 1. [A1BG AS1](/details-gene/503538) acts as a negative regulator of A1BG protein expression in [choroid plexus epithelial cells](/details-cell/CL0000706), thereby modulating the protein composition of the cerebrospinal fluid and the function of the blood-CSF barrier. 2. The expression of [A1BG AS1](/details-gene/503538) is altered in neurological disorders involving choroid plexus dysfunction or neuroinflammation, making it a potential biomarker or therapeutic target for such conditions. **Suggested Experimental Approach:** To test the hypothesis that [A1BG AS1](/details-gene/503538) regulates A1BG expression, one could utilize an *in vitro* model of human choroid plexus epithelial cells. Targeted knockdown of [A1BG AS1](/details-gene/503538) using locked nucleic acids (LNAs) or siRNA should be performed. Subsequent quantitative analysis of A1BG mRNA (via qRT-PCR) and protein levels (via Western blot or ELISA) would directly determine if [A1BG AS1](/details-gene/503538) exerts a repressive effect on its sense-strand target in this cell type. **Therapeutic Potential:** As a non-coding RNA with a specific expression pattern, [A1BG AS1](/details-gene/503538) represents a potential target for RNA-based therapeutics, such as antisense oligonucleotides (ASOs). Its high expression in the choroid plexus suggests that targeting it could be a strategy for modulating blood-CSF barrier function or CSF composition in neurological diseases. If its upregulation in a disease state leads to pathological suppression of A1BG, then therapeutic inhibition of [A1BG AS1](/details-gene/503538) would be the indicated strategy. Such a therapeutic could potentially be administered intrathecally to maximize efficacy and minimize systemic off-target effects.