Details for: IGHV6 1

Gene ID: 28385

Gene Type:  Other  - A known gene or region type that lacks a specific category. Includes immunoglobulin (Ig), T-cell receptor (TCR) gene segments, and repetitive elements.

Symbol: IGHV6 1

Ensembl ID: ENSG00000211933

Description: immunoglobulin heavy variable 6-1

Cell Significance Landscape

Associated with

Significant Cells

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

  • plasmablast CL0000980
    CSI 5.67
    rCSI 4.46%
    PRS 99.78
  • IgA plasma cell CL0000987
    CSI 5.2
    rCSI 5.32%
    PRS 99.4
  • IgG plasma cell CL0000985
    CSI 3.96
    rCSI 4.74%
    PRS 99.86

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 [IGHV6 1](/details-gene/28385), or Immunoglobulin Heavy Variable 6-1, is a germline gene segment located on chromosome 14 that encodes a key portion of the variable region of immunoglobulin heavy chains. Its primary molecular function is to contribute to the antigen-binding site of antibodies, thereby playing a direct role in the recognition and neutralization of foreign pathogens. Consistent with this function, its expression is highly specific and significant in terminally differentiated B-lymphocytes, particularly in antibody-secreting cells such as [plasmablast](/details-cell/CL0000980)s and mature [IgA plasma cell](/details-cell/CL0000987)s and [IgG plasma cell](/details-cell/CL0000985)s. ## Cellular Roles and Expression Landscape The expression profile of [IGHV6 1](/details-gene/28385) firmly establishes its role as a fundamental component of the humoral immune system. **Overall**, the gene shows its highest significance in cell types dedicated to high-volume antibody production. The top-ranked cells, including [plasmablast](/details-cell/CL0000980) (CSI: 5.67), [IgA plasma cell](/details-cell/CL0000987) (CSI: 5.20), and [IgG plasma cell](/details-cell/CL0000985) (CSI: 3.96), are all stages of the mature B cell lineage responsible for secreting immunoglobulins into circulation. The high Cell Significance Index (CSI) in these cells indicates that the transcript for this V-segment is abundant, reflecting its active transcription and incorporation into antibody molecules during an immune response. This highly restricted expression pattern suggests that [IGHV6 1](/details-gene/28385) function is exclusively tied to the B cell lineage and is most critical during the effector phase of humoral immunity. ## Pathways and Molecular Function The function of [IGHV6 1](/details-gene/28385) is integral to the process of adaptive immunity. As a variable (V) gene segment, its product directly participates in [antigen binding](/details-go/GO:0003823), forming part of the paratope that recognizes specific epitopes. This gene segment is assembled with D and J segments during V(D)J recombination in developing [B cell](/details-cell/CL0000236)s to create a unique antigen receptor. Upon maturation into a plasma cell, the resulting protein becomes part of a secreted [immunoglobulin complex](/details-go/GO:0019814), which is localized to the [extracellular region](/details-go/GO:0005576), or remains anchored to the [plasma membrane](/details-go/GO:0005886) as a B cell receptor. The collective action of antibodies utilizing this and other V-segments underpins the [immunoglobulin mediated immune response](/details-go/GO:0016064), which is essential for host defense. ## Research Directions The specific role of antibodies utilizing the [IGHV6 1](/details-gene/28385) segment in health and disease presents several avenues for investigation. While its general function is known, its potential preferential use in response to certain antigens or in pathological conditions remains an active area of research. **Proposed Hypotheses:** 1. The usage of the [IGHV6 1](/details-gene/28385) gene segment may be biased in the B cell repertoires of individuals responding to specific classes of pathogens (e.g., encapsulated bacteria or particular viruses), suggesting a structural predisposition for binding certain epitopes. 2. In autoimmune diseases such as systemic lupus erythematosus or rheumatoid arthritis, pathogenic autoantibodies may show an increased frequency of [IGHV6 1](/details-gene/28385) usage, making it a potential biomarker for specific disease endotypes. **Experimental Approach:** To test the hypothesis of biased usage in response to a pathogen, one could perform high-throughput B cell receptor (BCR) repertoire sequencing (Rep-seq) on sorted antigen-specific [plasmablast](/details-cell/CL0000980)s from individuals recently vaccinated or infected (e.g., with SARS-CoV-2). By comparing the V-gene segment frequencies in these cells against the background repertoire of naive [B cell](/details-cell/CL0000236)s from the same individuals, a statistically significant enrichment of [IGHV6 1](/details-gene/28385) would provide strong evidence for its preferential role in that specific immune response. **Therapeutic Potential:** As a germline gene segment, [IGHV6 1](/details-gene/28385) itself is not a direct drug target. However, the unique antigen-binding site (idiotype) created by an antibody using this segment can be a highly specific target. In B cell malignancies like multiple myeloma or chronic lymphocytic leukemia, where a malignant clone may exclusively use [IGHV6 1](/details-gene/28385), therapies such as anti-idiotype antibodies or CAR-T cells could be developed to specifically eliminate the cancerous cells. This approach would represent a highly personalized therapeutic strategy, targeting the unique product of the malignant clone while sparing healthy B cells.