Details for: CL0002088

Cell ID: CL0002088

Cell Name: interstitial cell of Cajal

Description: Some argue this cell type is of mesenchymal origin.

Synonyms: ICC, intestinal pacemaker cell

Selected Context(s): Overall

Gene Significance Landscape

Display Options
Score:
Display
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 interstitial cell of Cajal 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 interstitial cell of Cajal. 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 interstitial cell of Cajal. 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 interstitial cell of Cajal. 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:  interstitial cell of Cajal (CL0002088)

 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.

Loading network (please wait)...

## Summary The [interstitial cell of Cajal](/details-cell/CL0002088), also known as the intestinal pacemaker cell, is a mesenchymal-derived cell type critical for regulating gastrointestinal motility. The gene significance profile suggests that its identity is defined by an exceptionally high level of expression for genes involved in core cellular processes, including protein synthesis, energy metabolism, and iron homeostasis. Top markers such as [NPM1](/details-gene/4869), involved in ribosome biogenesis, and [FTH1](/details-gene/2495), an iron storage protein, indicate that these cells maintain their specialized pacemaker function through a robust and highly active 'housekeeping' machinery, distinguishing them from other cell types in their environment. ## Key Characteristics and Function Analysis of the top marker genes in the **Overall** context reveals several key functional clusters that define the [interstitial cell of Cajal](/details-cell/CL0002088). * **High Metabolic and Bioenergetic Activity:** A prominent signature of this cell type is the high significance of numerous genes involved in energy metabolism. This includes components of the mitochondrial respiratory chain such as [ATP5MG](/details-gene/10632), [COX7C](/details-gene/1350), [ATP5F1E](/details-gene/514), and [NDUFA4](/details-gene/4697), as well as the key glycolytic enzyme [GAPDH](/details-gene/2597). This strong bioenergetic profile is consistent with the high energy demands required to maintain the ionic gradients essential for their pacemaker electrical activity. * **Robust Protein Synthesis and RNA Processing:** The cell is marked by high expression of genes central to protein production and regulation. [NPM1](/details-gene/4869) (ribosomal biogenesis), [SRP14](/details-gene/6727) (protein targeting), [EEF1D](/details-gene/1936) (translation elongation), and multiple heterogeneous nuclear ribonucleoproteins like [HNRNPA2B1](/details-gene/3181) and [HNRNPA1](/details-gene/3178) all show high specificity. This suggests a high rate of protein turnover and a complex post-transcriptional regulatory landscape necessary for maintaining its specialized structure and function. * **Iron Homeostasis and Oxidative Stress Management:** The high significance of both ferritin heavy chain ([FTH1](/details-gene/2495)) and light chain ([FTL](/details-gene/2512)) suggests a critical role for iron sequestration and management. This, combined with the prominence of [GSTP1](/details-gene/2950), an enzyme involved in detoxification and response to reactive oxygen species, indicates that these cells possess a strong intrinsic defense system against oxidative stress, likely a consequence of their high mitochondrial activity. * **Structural and Immune-Signaling Components:** The presence of [MYL6](/details-gene/4637) (myosin light chain) is consistent with their mesenchymal origin and role in the structural network of the gut wall. Additionally, the significance of [B2M](/details-gene/567) (a component of MHC-I) and the damage-associated molecular pattern protein [HMGB1](/details-gene/3146) suggests these cells may participate in immune surveillance and signaling during tissue stress or inflammation. * **Distinct Cellular Identity:** The anti-markers profile confirms the cell's specialized nature by showing a lack of expression for genes associated with other distinct lineages or functions, such as sensory perception ([CIB2](/details-gene/10518)) or ciliary motion ([DNAL4](/details-gene/10126)). Notably, several mitochondrially-encoded genes ([COX3](/details-gene/4514), [ATP6](/details-gene/4508), [ND3](/details-gene/4537)) appear as anti-markers, which contrasts sharply with the high expression of nuclear-encoded mitochondrial proteins. This may point towards a unique stoichiometric regulation of the respiratory chain complexes in these cells. ## Clinical Significance and Contextual Roles Although this analysis is based on an **Overall** context, the gene signature of [interstitial cells of Cajal](/details-cell/CL0002088) provides insights into their potential roles in pathology. The loss or dysfunction of these cells is a known cause of gastrointestinal motility disorders. The data suggests that this vulnerability may be linked to their high metabolic rate. Their dependence on robust energy production and protein synthesis could make them particularly susceptible to ischemic injury, metabolic diseases, or toxins that disrupt these core processes. The high expression of [FTH1](/details-gene/2495), [FTL](/details-gene/2512), and [GSTP1](/details-gene/2950) points to a central role in managing oxidative stress within the intestinal wall. In inflammatory conditions like inflammatory bowel disease, where oxidative stress is high, the functional capacity of this system in ICCs may be a critical determinant of cell survival and the preservation of normal gut motility. Furthermore, the significant expression of the alarmin [HMGB1](/details-gene/3146) suggests that stressed or dying ICCs could actively signal to the immune system, potentially contributing to the inflammatory cycle in chronic gut diseases. The dysregulation of these 'housekeeping' but highly expressed genes could therefore be a key factor in the transition from a healthy to a diseased state. ## Potential Mechanisms and Research Directions 1. **Hypothesis: The pacemaker function of interstitial cells of Cajal is underpinned by a "super-housekeeper" phenotype, characterized by an exceptionally high metabolic rate that makes them uniquely vulnerable to bioenergetic failure.** The defining markers are not niche ion channels but rather universally expressed genes for metabolism and protein synthesis, suggesting their specialized role is achieved by quantitatively upregulating core machinery to an extreme level. * **Surprising Findings:** The most significant markers are not classical pacemaker-related genes but are instead involved in fundamental cellular upkeep. Furthermore, there is a striking discordance between the high expression of nuclear-encoded mitochondrial proteins (top markers) and the negative association with several key mitochondrial-encoded respiratory proteins (anti-markers). This suggests a highly unusual regulation of mitochondrial proteome assembly and function. * **Testable Questions:** How does the rate of ATP turnover in [interstitial cells of Cajal](/details-cell/CL0002088) compare to adjacent smooth muscle cells under basal and stressed conditions? Does selective inhibition of mitochondrial protein synthesis have a more pronounced effect on ICC electrical activity than inhibition of cytoplasmic protein synthesis? 2. **Hypothesis: Interstitial cells of Cajal act as critical sensors and regulators of the local inflammatory microenvironment through their robust iron-handling and stress-response machinery.** Their high expression of ferritin ([FTH1](/details-gene/2495)/[FTL](/details-gene/2512)) and the alarmin [HMGB1](/details-gene/3146) indicates a dual role: first, to protect themselves from oxidative damage generated by their own metabolism, and second, to signal distress to the surrounding tissue and immune cells when this protective capacity is overwhelmed. * **Surprising Findings:** The data elevates the potential immunomodulatory role of ICCs to a level of significance on par with their established pacemaking function. The high specificity score for [HMGB1](/details-gene/3146) suggests it may be a more integral part of this cell's biology than previously appreciated. * **Testable Questions:** In a co-culture system, does the induction of oxidative stress in [interstitial cells of Cajal](/details-cell/CL0002088) lead to the release of [HMGB1](/details-gene/3146), and does this conditioned media subsequently activate macrophages or other immune cells?