Details for: CL0002079

Cell ID: CL0002079

Cell Name: pancreatic ductal cell

Description: Epithelial cell found in the ducts of the pancreas. This cell type contributes to the high luminal pH.

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

Image representation

Depiction of pancreatic ductal cell
Courtesy of SwissBioPics

Significant Genes List

Genes with the highest and lowest Percentile Rank Scores (PRS) for pancreatic ductal 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 pancreatic ductal 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 pancreatic ductal 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 pancreatic ductal 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:  pancreatic ductal cell (CL0002079)

 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 [pancreatic ductal cell](/details-cell/CL0002079) is a specialized epithelial cell lining the pancreatic ducts, primarily responsible for secreting bicarbonate-rich fluid to neutralize stomach acid and create an optimal pH for digestive enzymes. **Overall**, the gene significance profile, based on expression specificity (Z-score), reveals a cell type with a highly developed cytoskeleton, robust metabolic activity, and extensive protein processing machinery. The strong specific expression of multiple myosin light chain isoforms ([MYL6](/details-gene/4637), [MYL12A](/details-gene/10627), [MYL12B](/details-gene/103910)) suggests a key role for cellular contractility in regulating ductal architecture and fluid secretion. This profile portrays the [pancreatic ductal cell](/details-cell/CL0002079) not merely as a passive conduit but as an active and dynamic participant in pancreatic exocrine function. ## Key Characteristics and Function Analysis of the top marker genes by expression specificity highlights several core functional axes that define the [pancreatic ductal cell](/details-cell/CL0002079). * **Cytoskeletal Dynamics and Contractility:** A dominant feature of this cell is the highly specific expression of genes involved in the actin-myosin cytoskeleton. This includes myosin alkali and regulatory light chains such as [MYL6](/details-gene/4637), [MYL12A](/details-gene/10627), and [MYL12B](/details-gene/103910), as well as the actin-depolymerizing factor [CFL1](/details-gene/1072). This molecular signature suggests that these cells possess significant contractile and structural remodeling capabilities, which may be crucial for maintaining ductal integrity, managing luminal pressure, and facilitating the secretion of pancreatic juice. * **Protein Synthesis and Quality Control:** The high specificity of genes like [SRP14](/details-gene/6727) (part of the signal recognition particle for protein targeting) and a suite of ubiquitin-related genes ([UBC](/details-gene/7316), [UBB](/details-gene/7314), [UBE2D3](/details-gene/7323), [SKP1](/details-gene/6500)) underscores a high capacity for protein synthesis, folding, and degradation. This is consistent with a secretory epithelial cell that must produce and maintain a large number of membrane proteins, such as ion transporters (e.g., CFTR), and respond to cellular stress by managing protein turnover. * **High Metabolic Activity and Stress Response:** The specific expression of components of the mitochondrial electron transport chain, including [NDUFA4](/details-gene/4697) and [COX7C](/details-gene/1350), indicates high energetic demands. This is likely required to fuel the ion pumps necessary for bicarbonate secretion. Furthermore, the prominence of [GSTP1](/details-gene/2950), a key enzyme in detoxification of electrophilic compounds, and [SAT1](/details-gene/6303), the rate-limiting enzyme in polyamine catabolism, suggests a pre-programmed system to handle oxidative stress, a known challenge in the metabolically active pancreas. * **Cellular Signaling and Regulation:** Several top markers are key signaling hubs. [GNAS](/details-gene/2778) encodes the G-alpha(s) protein, a critical transducer of signals from hormones like secretin that stimulate bicarbonate secretion. The 14-3-3 proteins, [YWHAZ](/details-gene/7534) and [YWHAB](/details-gene/7529), are adaptor proteins that regulate numerous cellular processes, including cell cycle and apoptosis, highlighting the complex regulatory networks governing ductal cell function. * **Defining Lineage Identity:** The anti-marker profile helps to delineate the unique identity of [pancreatic ductal cells](/details-cell/CL0002079). The low specificity of genes associated with other pancreatic lineages, such as [IAPP](/details-gene/3375) (islet amyloid polypeptide, characteristic of endocrine beta cells), or liver-derived plasma proteins like [FGA](/details-gene/2243) (fibrinogen alpha chain), confirms the distinct nature of this cell type. ## Clinical Significance and Contextual Roles **Overall**, the top specific genes of [pancreatic ductal cells](/details-cell/CL0002079) have significant clinical implications, particularly in the context of pancreatitis and pancreatic cancer (pancreatic ductal adenocarcinoma, PDAC), which originates from these cells. The high expression of [HMGB1](/details-gene/3146) is particularly relevant, as its extracellular release can act as a damage-associated molecular pattern (DAMP), promoting sterile inflammation, a hallmark of acute pancreatitis ([Link](https://doi.org/10.1002/(sici)1097-0215(19970220)74:1%3C1::aid-ijc1%3E3.0.co;2-6)). Similarly, [GSTP1](/details-gene/2950) is frequently overexpressed in various cancers and is associated with resistance to chemotherapy by detoxifying cytotoxic drugs. Its high baseline specificity in normal ductal cells may contribute to the notorious chemoresistance of PDAC. The gene [ITM2B](/details-gene/9445) is linked to familial British dementia, a neurodegenerative disease, through mutations causing amyloid peptide formation ([Link](https://doi.org/10.1038/21637)). While its specific role in the pancreas is unclear, its function in protein processing and potential for aggregation could be relevant in protein-misfolding stress associated with pancreatic diseases. [TMBIM6](/details-gene/7009), a known anti-apoptotic protein that regulates calcium flux from the endoplasmic reticulum, may play a crucial role in ductal cell survival under the stressful conditions of pancreatitis. ## Potential Mechanisms and Research Directions Based on the specific gene signature of [pancreatic ductal cells](/details-cell/CL0002079), the following hypotheses and research directions are proposed: 1. **The highly specific expression of a diverse set of myosin light chains ([MYL6](/details-gene/4637), [MYL12A](/details-gene/10627), [MYL12B](/details-gene/103910)) confers specialized contractile properties to pancreatic ducts, enabling them to actively modulate luminal pressure and propel bicarbonate-rich fluid, a process that is dysregulated in diseases like cystic fibrosis and chronic pancreatitis.** * **Surprising Findings:** It is notable that genes typically associated with smooth muscle or non-muscle motility are among the most specific markers for these epithelial cells. This suggests their contractile function is not merely for structural housekeeping but is a central, defining feature of their physiological role, potentially forming a "periductal contractile sheath" that coordinates secretion along the ductal tree. * **Testable Questions:** Can high-resolution live imaging of pancreatic organoids or tissue slices demonstrate coordinated, secretagogue-induced contractions? Does targeted pharmacological inhibition or genetic knockdown of [MYL6](/details-gene/4637) or [MYL12A](/details-gene/10627) in a ductal cell model alter the rate of fluid secretion or the duct's ability to withstand osmotic or pressure stress? 2. **The specific co-expression of robust protein quality control machinery ([UBC](/details-gene/7316), [UBB](/details-gene/7314)) and potent detoxification enzymes ([GSTP1](/details-gene/2950)) constitutes a pre-emptive defense system. This system is essential for maintaining cellular homeostasis against the high metabolic load and oxidative stress inherent to bicarbonate production and exposure to potentially cytotoxic bile acids and pancreatic enzymes.** * **Surprising Findings:** The high Z-score for pan-cellular genes like ubiquitin ([UBC](/details-gene/7316) and [UBB](/details-gene/7314)) indicates their expression is uniquely pronounced in these cells compared to others. This suggests their function extends beyond general housekeeping to a specialized role, possibly in the rapid turnover of ion channels at the apical membrane or in signaling pathways that are constitutively active in these cells. * **Testable Questions:** Does inhibition of the ubiquitin-proteasome system in [pancreatic ductal cells](/details-cell/CL0002079) lead to a disproportionate accumulation of misfolded CFTR (a key ion channel) compared to other cell types? Does knockdown of [GSTP1](/details-gene/2950) render ductal cells significantly more vulnerable to apoptosis induced by bile acids or alcohol metabolites, which are known risk factors for pancreatitis?