Details for: CL0001082

Cell ID: CL0001082

Cell Name: immature innate lymphoid cell

Description: An innate lyphoid cell with an immature phenotype.

Synonyms: immature ILC

Selected Context(s): Overall

Gene Significance Landscape

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Score:
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Genes

Contexts:

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 immature innate lymphoid 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 immature innate lymphoid 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 immature innate lymphoid 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 immature innate lymphoid 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:  immature innate lymphoid cell (CL0001082)

 Legend
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 [immature innate lymphoid cell](/details-cell/CL0001082) is a progenitor cell within the innate lymphoid cell (ILC) lineage. Based on its gene significance profile, this cell is characterized by a unique transcriptional state poised for immune function and stress response. The high specificity of genes involved in lymphoid development, such as [PTPRC](/details-gene/5788) and [ZBTB16](/details-gene/7704), confirms its identity, while the top marker, the heat-shock protein [HSPA6](/details-gene/3310), suggests that responsiveness to cellular stress is a defining feature. Concurrently, the strong negative signature for mitochondrial genes indicates a state of metabolic quiescence, consistent with an undifferentiated, progenitor-like phenotype. ## Key Characteristics and Function **Overall**, the gene expression signature of the [immature innate lymphoid cell](/details-cell/CL0001082) highlights its identity as a developing immune cell equipped with fundamental lymphoid machinery and a heightened preparedness for environmental stress. * **Lymphoid Lineage and Development:** The cell's identity is strongly supported by the high specificity of several key lymphoid markers. [PTPRC](/details-gene/5788) (CD45) is a pan-leukocyte marker, while [LCP1](/details-gene/3936) is an actin-binding protein crucial for the motility of lymphocytes. Critically, the transcription factor [ZBTB16](/details-gene/7704) (PLZF) is a known master regulator required for the development of ILCs and other innate-like lymphocytes, as described in multiple studies ([Link](https://doi.org/10.1002/j.1460-2075.1993.tb05757.x)). This combination firmly places the cell within the early stages of the ILC developmental pathway. * **Stress Response and Cytoskeletal Dynamics:** The most specific marker for this cell is [HSPA6](/details-gene/3310), an inducible heat shock protein, suggesting that these cells are uniquely sensitive or responsive to cellular stress, which may play a role in their differentiation or survival. This is complemented by a suite of genes involved in cytoskeletal organization, including [LCP1](/details-gene/3936) and [COTL1](/details-gene/23406), indicating that cell shape, motility, and interaction are important facets of its biology. * **Antigen Processing and Immune Signaling:** The significant expression of [ERAP2](/details-gene/64167) and [B2M](/details-gene/567) suggests that these immature cells possess the machinery for processing and presenting peptides via MHC class I molecules. This capability may allow them to interact with other immune cells even at this early stage. Furthermore, the presence of signaling components like [GNA15](/details-gene/2769), [RGS1](/details-gene/5996), and the Fc receptor subunit [FCER1G](/details-gene/2207) indicates a preparedness to respond to a variety of extracellular cues. * **Metabolic Quiescence:** The anti-marker profile is strikingly dominated by genes essential for mitochondrial oxidative phosphorylation, including multiple subunits of the NADH dehydrogenase ([ND1](/details-gene/4535), [ND2](/details-gene/4536), [ND4](/details-gene/4538), [ND5](/details-gene/4540)), cytochrome c oxidase ([COX3], [COX5B](/details-gene/1329)), and ATP synthase ([ATP6](/details-gene/4508)) complexes. This strong negative enrichment is consistent with a quiescent or glycolytic metabolic state, a common feature of progenitor cells that may serve to limit metabolic stress and preserve long-term potential. The low specificity of key transcription factors like [JUN](/details-gene/3725) and RNA-binding proteins further supports a state of relatively low basal cellular activity. ## Clinical Significance and Contextual Roles While this analysis does not distinguish between health and disease, the gene profile of immature ILCs provides insight into their potential roles in tissue homeostasis and pathology. ILCs are crucial for mucosal immunity and tissue repair, and the pool of immature ILCs is vital for replenishing these populations. The specific expression of [ERAP2](/details-gene/64167), a gene whose polymorphisms are linked to autoimmune conditions like ankylosing spondylitis, suggests that dysfunction in this cell population could have immunological consequences. The cell's apparent preparedness for stress, signaled by [HSPA6](/details-gene/3310), may be critical for its response to tissue damage or infection, where it must activate and differentiate to contribute to the appropriate immune response. The immature ILC appears to be a sentinel progenitor, quiescent under normal conditions but equipped to rapidly respond to danger signals, a process that, if dysregulated, could contribute to inflammatory disease. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The high specificity of the stress-response protein [HSPA6](/details-gene/3310) suggests that microenvironmental stress is not merely a hazard for immature ILCs but a key instructive signal that drives their differentiation and lineage commitment. * **Surprising Findings:** It is unexpected that the most defining gene for a developmentally immature cell is an inducible stress protein rather than a constitutive lineage-defining transcription factor or surface marker. This implies a tight coupling between the cell's environment and its developmental trajectory. * **Testable Questions:** Does the *in vitro* exposure of sorted immature ILCs to non-lethal doses of cellular stressors (e.g., heat shock, inflammatory cytokines, or ER stress inducers) direct their differentiation towards specific mature ILC subsets (ILC1, ILC2, or ILC3)? 2. **Hypothesis:** The systematic negative enrichment of nearly all components of the mitochondrial electron transport chain reflects a deliberate state of metabolic quiescence, likely reliance on glycolysis, which is essential for maintaining the long-term progenitor potential of immature ILCs. * **Surprising Findings:** The breadth of the negative signature across multiple, distinct mitochondrial complexes ([ND1](/details-gene/4535), [CYTB](/details-gene/4519), [COX5B](/details-gene/1329), [ATP5F1A](/details-gene/498)) is remarkable. It points towards a coordinated suppression of oxidative phosphorylation that is a defining characteristic of this cell state, rather than a simple metabolic preference. * **Testable Questions:** How do metabolic flux analyses (e.g., Seahorse assays) of immature ILCs compare to their mature, activated counterparts, and does pharmacologically forcing oxidative phosphorylation alter their self-renewal capacity or lead to premature functional exhaustion?