Details for: CL0002028

Cell ID: CL0002028

Cell Name: basophil mast progenitor cell

Description: There may be an intermediate cell type. These cells also CD13-positive, CD16-positive, CD32-positive, and integrin beta 7-positive. Transcription factors: GATA1-positive, MCP-1-positive, mitf-positive, PU.1-positive, and CEBP/a-low.

Synonyms: BMCP

Selected Context(s): Overall

Gene Significance Landscape

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Score:
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Genes

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Cell Significance Index (CSI) is uniquely calculated to reveal cell-specific gene markers. More info here

Significant Genes List

Genes with the highest and lowest Percentile Rank Scores (PRS) for basophil mast progenitor cell within the selected context(s).

Gene ID: A unique numerical identifier for this specific gene.
Symbol: Shortened abbreviation or name that represents this gene.
Ensembl Gene ID: A unique identifier assigned by Ensembl for genomic data mapping.
CSI Score: A combined effect size and statistical significance measure for basophil mast progenitor cell. Higher scores indicate a stronger, more significant difference in expression.
(Previously described as "Fold Change", but now represents Cliff's Delta × –log10(p).)

Gene ID: A unique numerical identifier for this specific gene.
Symbol: Shortened abbreviation or name that represents this gene.
Ensembl Gene ID: A unique identifier assigned by Ensembl for genomic data mapping.
CSI Score: A combined effect size and statistical significance measure for basophil mast progenitor cell. Higher scores indicate a stronger, more significant difference in expression.
Average CSI: csi sum / gene count
Cell network configuration

This network visualizes key genes for basophil mast progenitor cell. It primarily includes:
1. Top genes highly significant for this cell (Num. Top Cell Genes - based on the 'Min. CSI' setting).
2. Any additional specific 'Context Genes' you add below.
The final network is a combined view. Choose an Interaction Source (pathways or protein interactions) and optionally compare CSI scores with a Baseline Cell Type.

Maximum number of selected genes.
Select a context for the baseline cell.
Select a context for the target cell.
Target Cell for CSI:  basophil mast progenitor cell (CL0002028)

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Nodes (Genes):
 Query Gene
Node size also reflects Target Cell CSI magnitude.
Node Color (Target Cell CSI in specific network):
 Very High
 High
 Medium
 Low
 Very Low
 N/A or Not Sig.
Edges (Interactions):
 STRING (Protein-Protein)
 ONTOLOGY (Shared Pathway)
 Colors vary by pathway category; default arrow applies.

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## Summary The [basophil mast progenitor cell](/details-cell/CL0002028) (BMCP) represents a key hematopoietic intermediate that gives rise to both [basophils](/details-cell/CL0000767) and [mast cells](/details-cell/CL0000097). Its molecular signature is strikingly defined by the specific expression of a large cohort of genes integral to fundamental nuclear processes. Rather than being distinguished by lineage-specific surface markers, its identity appears rooted in a heightened and unique capacity for chromatin remodeling, RNA processing, and protein synthesis. This suggests the cell exists in a highly dynamic and transcriptionally poised state, primed for rapid execution of differentiation programs upon receiving appropriate signals. The high specificity scores (`csi_z`) for genes like [HMGB1](/details-gene/3146) and multiple heterogeneous nuclear ribonucleoproteins (hnRNPs) underscore that the regulation of genomic architecture and post-transcriptional events are defining features of this progenitor stage. ## Key Characteristics and Function **Overall**, the gene expression profile of the [basophil mast progenitor cell](/details-cell/CL0002028) is dominated by factors involved in managing genetic information, pointing to its primary role as a highly active and plastic precursor cell. * **Chromatin Remodeling and Transcription:** The cell is uniquely characterized by high expression specificity of several nonhistone chromatin-associated proteins, including [HMGB1](/details-gene/3146) and [HMGA1](/details-gene/3159), as well as the histone variants [H2AZ1](/details-gene/3015), [H3-3A](/details-gene/3020), and [H3-3B](/details-gene/3021). This collection suggests the maintenance of an open and accessible chromatin state, which is a hallmark of progenitor cells that must readily activate or silence large gene programs during differentiation. The presence of transcription-related factors like [BTF3](/details-gene/689) and [SUB1](/details-gene/10923) further supports its role in active gene expression. * **RNA Processing and Splicing:** A defining feature of this cell is the prominent signature of multiple heterogeneous nuclear ribonucleoproteins, including [HNRNPA2B1](/details-gene/3181), [HNRNPA1](/details-gene/3178), [HNRNPC](/details-gene/3183), and [HNRNPDL](/details-gene/9987). These proteins are critical for mRNA splicing, stability, and transport. Their co-expression suggests that post-transcriptional regulation, particularly alternative splicing, is a crucial mechanism for fine-tuning the proteome required for lineage commitment towards either basophils or mast cells. * **Ribosome Biogenesis and Translation:** High specificity for nucleolar proteins [NPM1](/details-gene/4869) and [NCL](/details-gene/4691), which are central to ribosome assembly, along with the translation elongation factor [EEF1B2](/details-gene/1933), indicates a high capacity for protein synthesis. This is consistent with a progenitor cell that must rapidly produce the structural and functional proteins necessary to build two distinct types of mature granulocytes. * **Cellular Lineage and State:** The cell's description indicates expression of key hematopoietic transcription factors such as [GATA1](/details-gene/2623), PU.1 ([SPI1](/details-gene/6688)), and MITF. The "Anti-Markers" profile, which shows low significance for genes like the leukocyte adhesion molecule [ICAM3](/details-gene/3385), may suggest that this progenitor is not yet equipped for the mature immune functions of its descendants, such as active cell-cell adhesion and trafficking. ## Clinical Significance and Contextual Roles The gene signature of the [basophil mast progenitor cell](/details-cell/CL0002028) highlights a suite of genes whose dysregulation is frequently implicated in cancer and inflammatory diseases. This suggests that the fundamental molecular machinery driving its progenitor state is a focal point for pathology. The high specificity of [HMGB1](/details-gene/3146) is particularly noteworthy. Beyond its nuclear role in chromatin architecture, [HMGB1](/details-gene/3146) can be released from cells to act as a potent pro-inflammatory cytokine or Damage-Associated Molecular Pattern (DAMP) ([Link](https://doi.org/10.1002/(sici)1097-0215(19970220)74:1<1::aid-ijc1>3.0.co;2-6)). This dual function raises the possibility that these progenitors, or their immediate descendants, could contribute to inflammatory microenvironments not only through differentiation into effector cells but also through the release of such alarmins. Furthermore, several of the top markers are well-established proto-oncogenes. [NPM1](/details-gene/4869) is one of the most frequently mutated genes in acute myeloid leukemia (AML), where its cytoplasmic dislocation alters cellular growth and differentiation pathways ([Link](https://doi.org/10.1021/bi00429a017)). Similarly, [HMGA1](/details-gene/3159) is an architectural transcription factor whose overexpression is a hallmark of many cancers, where it facilitates malignant transformation by altering the chromatin landscape ([Link](https://doi.org/10.1093/nar/17.15.5947)). The specific reliance of this progenitor on these oncofetal proteins suggests that it may be particularly vulnerable to leukemic transformation if their expression or function is dysregulated. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The specific combination of architectural chromatin proteins ([HMGB1](/details-gene/3146), [HMGA1](/details-gene/3159)) and histone variants ([H2AZ1](/details-gene/3015), H3.3) is not merely a marker of a progenitor state but actively establishes a poised, bivalent chromatin environment at key lineage-specific gene loci. This landscape is essential for maintaining the cell's potential to differentiate into either [basophils](/details-cell/CL0000767) or [mast cells](/details-cell/CL0000097), and its disruption could lead to lineage bias or a developmental block, potentially contributing to myelodysplasia or leukemia. * **Surprising Findings:** It is notable that these "general" chromatin factors exhibit higher expression specificity (`csi_z`) than many canonical lineage-determining transcription factors. This suggests that the control of physical DNA accessibility may be the primary and most defining regulatory layer in this progenitor, preceding the action of specific transcription factors. * **Testable Questions:** Does chromatin immunoprecipitation sequencing (ChIP-seq) for [HMGA1](/details-gene/3159) and [H2AZ1](/details-gene/3015) in sorted BMCPs reveal co-localization at the promoters of both basophil-specific and mast cell-specific genes? Furthermore, does CRISPR-mediated suppression of these factors alter the in vitro differentiation potential of these progenitors when cultured under lineage-skewing conditions? 2. **Hypothesis:** The consortium of highly specific heterogeneous nuclear ribonucleoproteins (e.g., [HNRNPA1](/details-gene/3178), [HNRNPA2B1](/details-gene/3181), [HNRNPC](/details-gene/3183)) orchestrates a complex program of alternative splicing that is critical for the basophil-mast cell fate decision. This machinery may generate specific isoforms of key hematopoietic regulators (e.g., [GATA1](/details-gene/2623)) or signaling molecules that differentially promote one lineage over the other, acting as a post-transcriptional control hub for differentiation. * **Surprising Findings:** The data highlights not a single dominant splicing factor, but an entire suite of them. This implies a combinatorial and potentially redundant system where the relative stoichiometry of different HNRNPs finely tunes the splicing outcome of target pre-mRNAs, creating a sophisticated regulatory network beyond simple on/off transcriptional control. * **Testable Questions:** Does deep RNA-sequencing of BMCPs reveal unique splicing isoforms of key hematopoietic transcription factors compared to more committed precursors? Can the mRNA targets of a specific factor, like [HNRNPA1](/details-gene/3178), be identified via CLIP-seq, and does its shRNA-mediated knockdown lead to a measurable shift in the ratio of basophils to mast cells generated in differentiation assays?