Details for: LOC124903372

Gene ID: 124903372

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: LOC124903372

Ensembl ID: ENSG00000187621

Description: uncharacterized LOC124903372

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Significant Cells

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

  • epithelial cell of proximal tubule CL0002306
    CSI 3.78
    rCSI 9.22%
    PRS 99.03
  • placental villous trophoblast CL2000060
    CSI 3.59
    rCSI 5.55%
    PRS 99.25

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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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 Analyzed for its expression specificity (CSI Z-Score), `LOC124903372` is an uncharacterized protein-coding gene that displays a remarkably cell-type-specific expression pattern. The data suggests it may serve as a unique marker for [epithelial cell of proximal tubule](/details-cell/CL0002306) and [placental villous trophoblast](/details-cell/CL2000060). Despite a perfect effect size indicating exclusive expression in these cells, the findings lack statistical significance in the current dataset, warranting further investigation to confirm this highly restricted expression profile. ## Cellular Roles and Expression Landscape The primary role of `LOC124903372`, when viewed through the lens of expression specificity, appears to be that of a highly specialized marker gene. In the **Overall** biological context, it demonstrates a maximal Effect Size (deltaVal: 1.00) in both [epithelial cell of proximal tubule](/details-cell/CL0002306) and [placental villous trophoblast](/details-cell/CL2000060). This value suggests that its expression is exclusively confined to these cell types within the analyzed dataset, a characteristic further supported by its exceptional percentile rank (PRS: >99%). However, this striking specificity is not accompanied by statistical confidence (p-value: >0.6), which may be due to a low number of expressing cells or other dataset limitations. The CSI (Z-SCORE) of 0.00 is unusual and may reflect a calculation artifact resulting from zero expression variance across all other cell types, which would be consistent with a perfectly specific gene. The expression in two functionally distinct yet highly specialized epithelial tissues, one involved in renal filtration and the other in materno-fetal exchange, points toward a potentially conserved, critical function in transport or barrier integrity. ## Pathways and Molecular Function As `LOC124903372` is an uncharacterized gene, there are currently no associated Gene Ontology or Reactome pathway annotations. However, its highly specific expression in [epithelial cell of proximal tubule](/details-cell/CL0002306) and [placental villous trophoblast](/details-cell/CL2000060) allows for functional inference. Both of these cell types are defined by extensive transport, secretion, and metabolic activities. This cellular context strongly suggests that `LOC124903372` may encode a protein involved in molecular transport, such as a novel membrane channel, a solute carrier, or a component of the vesicular trafficking machinery essential for the specialized functions of these epithelial barriers. ## Research Directions The highly specific yet statistically unconfirmed expression pattern of `LOC124903372` makes it a compelling candidate for further study, particularly to validate its role as a cell-type-specific marker and to elucidate its unknown function. ### Testable Hypotheses 1. **`LOC124903372` encodes a protein essential for selective reabsorption in the kidney.** Based on its exclusive expression in [epithelial cell of proximal tubule](/details-cell/CL0002306), it may play a direct role in reclaiming specific solutes from the glomerular filtrate. A proposed experiment would involve CRISPR-mediated knockdown of `LOC124903372` in a human proximal tubule cell line (e.g., HK-2), followed by metabolic profiling and transport assays to identify deficits in the reabsorption of key metabolites like glucose, amino acids, or phosphates. 2. **`LOC124903372` is a key mediator of materno-fetal nutrient transport.** The gene's specific expression in [placental villous trophoblast](/details-cell/CL2000060) suggests it could be critical for transporting nutrients to the developing fetus. An experimental approach would be to first confirm its localization within the syncytiotrophoblast layer of human placental tissue using *in situ* hybridization, then use siRNA to silence its expression in primary trophoblast cultures and measure subsequent changes in the uptake of critical nutrients. 3. **`LOC124903372` is a specialized transporter for a common, but rare, substrate in both kidney and placenta.** The gene's presence in two distinct transport-heavy tissues suggests a shared, highly specific function. An experiment to test this would be to express a tagged version of the LOC124903372 protein in both kidney and placental cell lines and perform unbiased screens (e.g., substrate profiling or identifying interacting partners via co-immunoprecipitation mass spectrometry) to identify its substrate or associated functional pathway. ### Therapeutic Potential Given its extreme cell-type specificity, `LOC124903372` presents a potentially high-value therapeutic target. If its function in the kidney is validated, it could be targeted to develop novel diuretics or to manage metabolic diseases associated with renal transport defects, with a low risk of off-target effects. Similarly, if its role in the placenta is confirmed, it could become a diagnostic marker or a therapeutic target for pathologies related to placental insufficiency, such as intrauterine growth restriction or pre-eclampsia.