Details for: RPL27AP6

Gene ID: 389435

Gene Type:  Pseudogene  - A non-functional segment of DNA that resembles a functional gene but has lost its protein-coding ability or is otherwise no longer expressed.

Symbol: RPL27AP6

Ensembl ID: ENSG00000218426

Description: ribosomal protein L27a pseudogene 6

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Significant Cells

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

  • CD4-positive, alpha-beta thymocyte CL0000810
    CSI 20.48
    rCSI 16.4%
    PRS 98.29
  • CD8-positive, alpha-beta thymocyte CL0000811
    CSI 12.1
    rCSI 18.87%
    PRS 99.44
  • erythroid lineage cell CL0000764
    CSI 11.51
    rCSI 74.04%
    PRS 99.71
  • professional antigen presenting cell CL0000145
    CSI 10.36
    rCSI 35.68%
    PRS 98.51
  • endocrine cell CL0000163
    CSI 9.89
    rCSI 50.71%
    PRS 99.47
  • chondrocyte CL0000138
    CSI 8.98
    rCSI 14.29%
    PRS 99.56
  • stratified epithelial cell CL0000079
    CSI 6.37
    rCSI 39.3%
    PRS 99.52
  • cell of skeletal muscle CL0000188
    CSI 3.63
    rCSI 39.5%
    PRS 99.59
  • mesenchymal stem cell CL0000134
    CSI 3.16
    rCSI 34.6%
    PRS 99.85
  • cord blood hematopoietic stem cell CL2000095
    CSI 2.54
    rCSI 48.71%
    PRS 98.62

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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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 [RPL27AP6](/details-gene/389435) is a processed pseudogene located on chromosome 6q25.2 in *Homo sapiens*. It is a non-protein-coding paralog of the gene encoding ribosomal protein L27a, a component of the large 60S ribosomal subunit. Despite its pseudogene classification, expression data reveals a distinct and significant cellular signature. **Overall**, [RPL27AP6](/details-gene/389435) shows its highest significance in developing T-lymphocytes, specifically [CD4-positive, alpha-beta thymocyte](/details-cell/CL0000810)s and [CD8-positive, alpha-beta thymocyte](/details-cell/CL0000811)s. Its notable expression in other metabolically active or proliferative cell types, including [erythroid lineage cell](/details-cell/CL0000764)s and [professional antigen presenting cell](/details-cell/CL0000145)s, suggests that its transcript may have a functional role, potentially in regulating processes related to cell growth and development. ## Cellular Roles and Expression Landscape The expression profile of [RPL27AP6](/details-gene/389435) points towards a significant role in hematopoiesis and immune cell development. The **Overall** analysis identifies its transcript as being most significant in thymic T-cell precursors, with a Cell Significance Index (CSI) of 20.48 in [CD4-positive, alpha-beta thymocyte](/details-cell/CL0000810)s and 12.10 in [CD8-positive, alpha-beta thymocyte](/details-cell/CL0000811)s. This strong association with thymocyte biology suggests a potential involvement in T-cell maturation. Beyond the thymus, [RPL27AP6](/details-gene/389435) is also a significant marker in other highly proliferative lineages. It displays a high CSI in [erythroid lineage cell](/details-cell/CL0000764)s (CSI: 11.51) and [professional antigen presenting cell](/details-cell/CL0000145)s (CSI: 10.36), cells that require robust protein synthesis machinery for differentiation and function. The gene's significance extends to non-hematopoietic cells with high metabolic demands, such as [endocrine cell](/details-cell/CL0000163)s (CSI: 9.89) and [chondrocyte](/details-cell/CL0000138)s (CSI: 8.98). This pattern is consistent with the function of its parent gene, which is integral to the ribosome, but the high and specific expression of a pseudogene transcript is notable and implies a potential regulatory function rather than direct protein production. ## Pathways and Molecular Function As a pseudogene, [RPL27AP6](/details-gene/389435) does not encode a protein, and therefore, direct functional annotations for molecular pathways are not applicable. However, its identity as a pseudogene of *RPL27A* provides critical context. The parent gene encodes a core component of the 60S ribosomal subunit, which is fundamentally involved in the process of mRNA translation and protein synthesis. The significant expression of the [RPL27AP6](/details-gene/389435) transcript, particularly in cells undergoing rapid proliferation and differentiation, suggests it may have acquired a secondary, regulatory function. Expressed pseudogenes can act as long non-coding RNAs (lncRNAs) or as competitive endogenous RNAs (ceRNAs). As a ceRNA, the [RPL27AP6](/details-gene/389435) transcript could potentially sequester microRNAs, thereby de-repressing the translation of its parent gene, *RPL27A*, or other related transcripts that share the same miRNA response elements. Such a mechanism would serve to fine-tune the rate of ribosome biogenesis and protein synthesis in a cell-type-specific manner. ## Research Directions The specific and high-level expression of a pseudogene like [RPL27AP6](/details-gene/389435) in distinct cell lineages, particularly developing lymphocytes, warrants further investigation. Its unusual profile generates several testable hypotheses regarding its potential regulatory roles in health and disease. 1. **Hypothesis 1:** The [RPL27AP6](/details-gene/389435) transcript functions as a competitive endogenous RNA (ceRNA) that titrates microRNAs targeting its parent gene, *RPL27A*, and other genes crucial for ribosome biogenesis. This activity would post-transcriptionally enhance protein synthesis capacity in highly proliferative cells like [thymocyte](/details-cell/CL0000791)s, facilitating their rapid expansion and differentiation. 2. **Hypothesis 2:** [RPL27AP6](/details-gene/389435) acts as a scaffold lncRNA that interacts with chromatin-modifying complexes to regulate the expression of key developmental genes during thymocyte and erythroid differentiation, independent of its sequence homology to *RPL27A*. **Proposed Experimental Approach:** To test the ceRNA hypothesis (Hypothesis 1), one could perform a targeted knockdown of the [RPL27AP6](/details-gene/389435) transcript using antisense oligonucleotides (ASOs) or CRISPR interference (CRISPRi) in a human thymocyte cell line (e.g., Jurkat) or primary hematopoietic stem and progenitor cells. The functional consequences could be assessed by: * Quantifying the mRNA and protein levels of *RPL27A* via qRT-PCR and Western blotting to determine if its expression is altered. * Performing RNA-sequencing followed by bioinformatic analysis to identify shared microRNA binding sites and potential off-target effects. * Validating direct miRNA interactions using luciferase reporter assays containing the [RPL27AP6](/details-gene/389435) sequence. * Assessing downstream cellular phenotypes, such as changes in cell proliferation rates (e.g., via Ki-67 staining), global protein synthesis (e.g., via puromycin incorporation assays), and differentiation potential. **Therapeutic Potential:** Given its high significance in specific hematopoietic lineages, [RPL27AP6](/details-gene/389435) may represent a novel therapeutic target in hematological malignancies characterized by uncontrolled proliferation, such as T-cell acute lymphoblastic leukemia (T-ALL) or certain types of erythroleukemia. If its function in promoting cell growth is confirmed, a therapeutic strategy based on **inhibition** would be appropriate. The transcript could be targeted by RNA-based therapeutics like ASOs, which can specifically bind to and promote the degradation of the [RPL27AP6](/details-gene/389435) RNA. The high specificity of this approach could minimize off-target effects compared to targeting core ribosomal proteins, making it an attractive area for future investigation.