Details for: CL0019031

Cell ID: CL0019031

Cell Name: intestine goblet cell

Description: Goblet cells reside throughout the length of the small and large intestine and are responsible for the production and maintenance of the protective mucus blanket by synthesizing and secreting high-molecular-weight glycoproteins known as mucins. Human intestinal goblet cells secrete the MUC2 mucin, as well as a number of typical mucus components: CLCA1, FCGBP, AGR2, ZG16, and TFF3.

Synonyms: intestinal goblet cell

Selected Context(s): Overall

Gene Significance Landscape

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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 intestine goblet 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 intestine goblet 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 intestine goblet 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 intestine goblet 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.
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Select a context for the target cell.
Target Cell for CSI:  intestine goblet cell (CL0019031)

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Nodes (Genes):
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Node size also reflects Target Cell CSI magnitude.
Node Color (Target Cell CSI in specific network):
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 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 [intestine goblet cell](/details-cell/CL0019031) is a specialized epithelial cell central to maintaining the protective mucus barrier of the gastrointestinal tract through the synthesis and secretion of high-molecular-weight mucins. While its canonical function is secretion, gene significance analysis reveals a striking and defining characteristic: an overwhelming enrichment for genes involved in mitochondrial bioenergetics. The high expression specificity of numerous mitochondrially-encoded genes, such as [ND4](/details-gene/4538), and nuclear-encoded mitochondrial components, including [COX4I1](/details-gene/1327), suggests that the core identity of this cell is intrinsically linked to an exceptionally high metabolic capacity. This bioenergetic signature points to the immense energy expenditure required for the synthesis, post-translational modification, and secretion of the complex glycoproteins that form the intestinal mucus layer. ## Key Characteristics and Function **Overall**, the gene expression profile of the [intestine goblet cell](/details-cell/CL0019031) underscores its role as a highly active biosynthetic factory, with a transcriptome dominated by genes that support massive energy production and protein synthesis. * **Mitochondrial Bioenergetics and Metabolism:** The most prominent feature of the goblet cell's specific gene signature is the exceptional significance of genes driving aerobic respiration. A vast number of top markers are components of the electron transport chain, including subunits of NADH dehydrogenase (e.g., [ND4](/details-gene/4538), [ND1](/details-gene/4535), [ND2](/details-gene/4536), [ND3](/details-gene/4537)), cytochrome c oxidase (e.g., [COX1](/details-gene/4512), [COX2](/details-gene/4513), [COX4I1](/details-gene/1327), [COX5B](/details-gene/1329), [COX6C](/details-gene/1345), [COX7C](/details-gene/1350)), cytochrome b ([CYTB](/details-gene/4519)), and ATP synthase ([ATP6](/details-gene/4508), [ATP5F1E](/details-gene/514)). This extensive and highly specific gene set indicates that an extraordinary level of ATP production is a defining functional requirement of this cell type, likely necessary to fuel the energetically demanding processes of mucin glycosylation, folding, and packaging. This observation is strongly supported by studies on the HT-29 colon adenocarcinoma cell line, where differentiation into a mucin-producing, goblet-like phenotype correlates with a significant increase in the expression of mitochondrial genes, including [ND4](/details-gene/4538) ([Link](https://pubmed.ncbi.nlm.nih.gov/1377597/)). The high significance of [GAPDH](/details-gene/2597) further suggests a high glycolytic flux to supply substrates for oxidative phosphorylation. * **Protein Synthesis and Cytoskeletal Dynamics:** Beyond energy production, other top markers point to robust translational and secretory activity. [TPT1](/details-gene/7178), the translationally controlled tumor protein, is highly significant, consistent with a high rate of protein synthesis. Furthermore, the specific expression of cytoskeletal components like [CFL1](/details-gene/1072) (cofilin 1) and [MYL6](/details-gene/4637) (myosin light chain 6) suggests a highly dynamic actin cytoskeleton is essential. This is likely critical for the intracellular transport of large mucin granules to the apical membrane and the mechanics of their exocytosis into the intestinal lumen. * **Defining a Terminally Differentiated State:** The anti-marker profile helps to delineate what this cell is not. The low significance of histone genes such as [H2BC3](/details-gene/3018) is consistent with the goblet cell being a terminally differentiated, non-proliferative cell type. Additionally, the lack of significant expression for [DLL4](/details-gene/54567), a key Notch ligand that promotes the absorptive enterocyte fate over the secretory lineage, further solidifies the distinct identity of the [intestine goblet cell](/details-cell/CL0019031). ## Clinical Significance and Contextual Roles The singular focus on an **Overall** context highlights the fundamental biology of the [intestine goblet cell](/details-cell/CL0019031), with profound implications for intestinal health and disease. The integrity of the mucus barrier is paramount for preventing direct contact between the luminal microbiota and the intestinal epithelium, thereby limiting inflammation. The data strongly suggest that this barrier is metabolically fragile, depending on an exceptionally high and sustained level of mitochondrial function. This profound reliance on aerobic respiration implies that conditions leading to mitochondrial dysfunction—such as oxidative stress, certain nutrient deficiencies, or genetic mitochondrial disorders—could severely compromise goblet cell function. A reduction in ATP output would likely impair mucin synthesis and secretion, leading to a thinner, less effective mucus layer. Such a defect in the primary defensive barrier is a key factor in the pathogenesis of inflammatory bowel diseases (IBD), such as Crohn's disease and ulcerative colitis. Therefore, the metabolic health of goblet cells may be a critical, and perhaps underappreciated, factor in maintaining intestinal homeostasis and preventing chronic inflammatory conditions. The established link between increased mitochondrial gene expression and mucin-producing differentiation in colon cancer cell models ([Link](https://pubmed.ncbi.nlm.nih.gov/1377597/)) further suggests that alterations in this metabolic program could be relevant in both inflammatory and neoplastic diseases of the gut. ## Potential Mechanisms and Research Directions 1. **Hypothesis: The primary function of intestine goblet cells—mucin production—is fundamentally gated by their capacity for mitochondrial ATP production.** The defining gene signature suggests that the synthesis, extensive O-glycosylation, and exocytosis of large MUC2 polymers represent one of the most energetically costly processes undertaken by any cell in the intestinal epithelium. This metabolic specialization is not merely supportive but is the central, rate-limiting characteristic of the cell. * **Surprising Findings:** The most specific genetic markers for this secretory cell are not the secreted products themselves (e.g., mucins) but the bioenergetic machinery required to produce and export them. This implies that therapeutic or pathological modulation of goblet cell function may be more effectively achieved by targeting its metabolic pathways rather than the expression of mucin genes directly. * **Testable Questions:** Does pharmacologic inhibition of the mitochondrial electron transport chain (e.g., with rotenone or oligomycin) in intestinal organoid models lead to a more profound and rapid depletion of the mucus layer compared to inhibition of transcription or translation? 2. **Hypothesis: The high specific expression of ubiquitously expressed "housekeeping" genes reflects their co-option into a specialized, high-throughput secretory program.** Genes such as [TPT1](/details-gene/7178), [CFL1](/details-gene/1072), and [GAPDH](/details-gene/2597) are not merely maintaining baseline cellular functions but are specifically upregulated and integrated to support an amplified pipeline that couples massive protein synthesis with dynamic, actin-based vesicular transport and exocytosis. * **Surprising Findings:** The high Z-score for these "housekeeping" genes challenges the notion of a static set of maintenance genes. In the context of the [intestine goblet cell](/details-cell/CL0019031), these genes appear to be key components of a specialized functional module, suggesting their regulation and role are highly context-dependent. * **Testable Questions:** Using proximity-ligation assays or co-immunoprecipitation in goblet cell lines, is there evidence for a specialized complex formation between components of the translational machinery (e.g., [TPT1](/details-gene/7178)), the mucin cargo, and cytoskeletal regulators ([CFL1](/details-gene/1072)) at the site of mucin granule formation and transport?