Details for: CL0011108

Cell ID: CL0011108

Cell Name: colon epithelial cell

Description: Epithelial cell that is part of the colon epithelium.

Synonyms: colonic epithelial 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 colon epithelial 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 colon epithelial 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 colon epithelial 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 colon epithelial 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:  colon epithelial cell (CL0011108)

 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 [colon epithelial cell](/details-cell/CL0011108) is a fundamental component of the colonic mucosal barrier. Based on its gene significance profile, this cell type is characterized by an exceptionally high level of metabolic activity, specifically centered on mitochondrial aerobic respiration. The unique co-expression of numerous subunits of the cytochrome c oxidase complex and ATP synthase, alongside key components of the cytoskeleton and iron metabolism, defines its identity as a high-energy cellular workhorse dedicated to maintaining barrier integrity, active transport, and rapid cell turnover. ## Key Characteristics and Function **Overall**, the gene expression signature of the [colon epithelial cell](/details-cell/CL0011108) is dominated by genes essential for energy production and cellular structure, painting a picture of a metabolically demanding and structurally dynamic cell. * **Mitochondrial Respiration and Energy Metabolism:** The most prominent feature is the remarkably high significance of genes encoding components of the mitochondrial electron transport chain and ATP synthesis machinery. This includes multiple subunits of cytochrome c oxidase ([COX7C](/details-gene/1350), [COX5B](/details-gene/1329), [COX6C](/details-gene/1345), [COX6A1](/details-gene/1337), [COX7A2](/details-gene/1347), [COX4I1](/details-gene/1327)) and NADH dehydrogenase ([ND4](/details-gene/4538)), as well as subunits of ATP synthase ([ATP5F1E](/details-gene/514), [ATP5F1B](/details-gene/506), [ATP5MG](/details-gene/10632)). The high specificity scores (`csi_z`) for these genes suggest that this intense aerobic respiration capacity is a defining characteristic that distinguishes colon epithelial cells from many other cell types. This high energy output is likely required to fuel active ion transport, mucus production, and the high rate of proliferation necessary for epithelial renewal. One publication notes that increased expression of mitochondrial genes like [ND4](/details-gene/4538) correlates with the differentiation of HT-29 human colonic adenocarcinoma cells, suggesting a link between mitochondrial function and the maturation state of these cells ([Link](https://pubmed.ncbi.nlm.nih.gov/1377597/)). * **Cytoskeletal Dynamics and Integrity:** A second key functional cluster involves genes that regulate the cytoskeleton. The high significance of non-muscle myosin light chains such as [MYL6](/details-gene/4637) and [MYL12B](/details-gene/103910), along with the actin-depolymerizing factor [CFL1](/details-gene/1072), underscores the importance of cellular structure, motility, and integrity. These proteins are critical for maintaining the tight junctions of the epithelial barrier, facilitating cell migration during wound healing, and executing the shape changes associated with absorption. * **Iron Homeostasis:** The strong signature of ferritin light and heavy chain genes ([FTL](/details-gene/2512) and [FTH1](/details-gene/2495)) points to a crucial role for iron management. As iron is a vital cofactor for the heme groups in cytochromes, the high demand for iron storage is likely a direct consequence of the extensive mitochondrial respiratory apparatus in these cells. This suggests that iron metabolism is tightly co-regulated with energy production to support the cell's metabolic needs. * **Signal Transduction:** The prominence of [CALM1](/details-gene/801), which encodes the ubiquitous calcium-binding protein calmodulin, indicates the central role of calcium signaling in orchestrating the diverse functions of colon epithelial cells. Calcium is a key second messenger that can modulate both mitochondrial activity and cytoskeletal contractility, potentially acting as a hub to integrate metabolic status with structural responses. The anti-marker profile is less definitive, with high p-values indicating a lack of statistical significance for the least-expressed genes. However, the low ranking of genes associated with other specialized lineages, such as spermatogenesis ([YBX2](/details-gene/51087)) or adaptive immunity ([IGLV3 21](/details-gene/28796)), is consistent with the cell's defined epithelial identity. ## Clinical Significance and Contextual Roles Although this analysis is based on an **Overall** context without a direct disease comparison, the key gene markers provide significant insight into potential clinical relevance. The high metabolic rate of colon epithelial cells makes them particularly vulnerable to insults that disrupt energy production, a common feature in inflammatory bowel disease (IBD) and ischemia. The profound reliance on mitochondrial function suggests that mitochondrial dysfunction could be a key factor in the pathogenesis of colorectal cancer. Indeed, studies on the HT-29 colon adenocarcinoma cell line have shown that modulating mitochondrial gene expression can influence cell differentiation and growth ([Link](https://pubmed.ncbi.nlm.nih.gov/1377597/)). Therefore, genes like the numerous `COX` and `ATP5` subunits identified here may not only serve as markers of normal epithelial function but could also represent therapeutic targets or biomarkers in the context of neoplastic transformation where metabolic reprogramming (the Warburg effect) is a known hallmark. The overexpression of [SLC52A3](/details-gene/113278) has been identified as a prognostic biomarker in esophageal cancer ([Link](https://doi.org/10.1007/s00018-018-2757-4)), and while it is an anti-marker here, its role in other GI cancers highlights the importance of nutrient transporters in epithelial malignancies. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The high expression specificity of ferritin genes ([FTH1](/details-gene/2495), [FTL](/details-gene/2512)) is a critical, specialized adaptation required to buffer iron for the exceptionally high demands of the mitochondrial respiratory chain in colon epithelial cells. Dysregulation of this tightly coupled iron-energy axis may represent an early vulnerability in the development of colonic diseases like IBD or cancer. * **Surprising Findings:** It is noteworthy that the specificity scores for iron storage proteins are nearly as high as those for the core enzymatic components of the electron transport chain. This implies that iron management is not merely a passive, housekeeping function but a defining and highly regulated specialization of this cell type. * **Testable Questions:** Does conditional knockout of [FTH1](/details-gene/2495) in a colon epithelial cell organoid model result in impaired mitochondrial respiration and compromised barrier function, even under systemic iron-replete conditions? 2. **Hypothesis:** The specific, highly expressed isoforms of non-muscle myosin ([MYL6](/details-gene/4637), [MYL12B](/details-gene/103910)) and actin-remodeling proteins ([CFL1](/details-gene/1072)) are key effectors regulated by [CALM1](/details-gene/801)-mediated calcium signals to physically organize mitochondria and support their function. This cytoskeletal network may facilitate the transport of mitochondria to regions of high ATP demand, such as the apical membrane for ion transport, thereby coupling cellular structure directly to metabolic output. * **Surprising Findings:** While the importance of the cytoskeleton is expected for an epithelial cell, the high *specificity* of these particular motor proteins suggests a uniquely adapted system. This system may be fine-tuned to manage the structural challenges of a high-turnover tissue that is also under constant mechanical stress and has massive energy requirements. * **Testable Questions:** Using high-resolution live-cell imaging, does inhibition of [MYL6](/details-gene/4637) or chelation of intracellular calcium alter the subcellular localization and motility of mitochondria in response to metabolic stimuli (e.g., butyrate treatment) in primary colon epithelial cells?