Details for: CL0002064

Cell ID: CL0002064

Cell Name: pancreatic acinar cell

Description: A secretory cell found in pancreatic acini that secretes digestive enzymes and mucins. This cell is a typical zymogenic cell, have a basal nucleus and basophilic cytoplasm consisting of regular arrays of granular endoplasmic reticulum with mitochondria and dense secretory granules.

Synonyms: acinar cell of pancreas

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

Image representation

Depiction of pancreatic acinar cell
Courtesy of SwissBioPics

Significant Genes List

Genes with the highest and lowest Percentile Rank Scores (PRS) for pancreatic acinar 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 acinar 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 acinar 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 acinar 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 acinar cell (CL0002064)

 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 [pancreatic acinar cell](/details-cell/CL0002064) is a highly specialized secretory cell central to the exocrine function of the pancreas. Its primary role is the synthesis and secretion of large quantities of digestive enzymes packaged into zymogen granules. The gene significance profile for this cell type is overwhelmingly dominated by components of the mitochondrial electron transport chain, as evidenced by exceptionally high expression specificity (`csi_z`) scores for genes such as [ND2](/details-gene/4536), [ND4](/details-gene/4538), and [ND1](/details-gene/4535). This molecular signature underscores an extraordinary bioenergetic capacity, highlighting that the core identity of the [pancreatic acinar cell](/details-cell/CL0002064) is defined by its massive energy expenditure dedicated to protein production and export. ## Key Characteristics and Function **Overall**, the molecular profile of the [pancreatic acinar cell](/details-cell/CL0002064) reflects a cellular factory optimized for mass production and secretion. The top marker genes can be categorized into distinct, synergistic functional clusters. * **Mitochondrial Bioenergetics:** The most striking characteristic is the extreme specificity of nearly the entire suite of mitochondrially-encoded genes involved in oxidative phosphorylation. This includes multiple subunits of Complex I ([ND1](/details-gene/4535), [ND2](/details-gene/4536), [ND3](/details-gene/4537), [ND4](/details-gene/4538), [ND5](/details-gene/4540)), Complex III ([CYTB](/details-gene/4519)), Complex IV ([COX1](/details-gene/4512), [COX2](/details-gene/4513)), and Complex V ([ATP6](/details-gene/4508)). The near-perfect effect sizes (+1.0000) and top-percentile ranks for these genes suggest that the cell's proteome and energy budget are profoundly dedicated to ATP production. This is consistent with the immense energy demands required for the transcription, translation, and vesicular transport of digestive enzymes. * **Protein Synthesis and Translation Machinery:** Complementing its energy production capacity, the cell shows specific enrichment for genes essential for protein synthesis. Key markers include [NPM1](/details-gene/4869), involved in ribosome biogenesis, [PABPC1](/details-gene/26986), a poly(A)-binding protein crucial for mRNA stability and translation initiation, and translation elongation factors [EEF1B2](/details-gene/1933) and [EEF1D](/details-gene/1936). The high significance of these genes confirms that robust and sustained protein translation is a central feature of acinar cell function. * **Nuclear Organization and Gene Regulation:** The high ranking of the long non-coding RNA [NEAT1](/details-gene/283131) suggests a specialized nuclear architecture. [NEAT1](/details-gene/283131) is a core component of paraspeckles, nuclear bodies involved in the regulation of gene expression and mRNA retention. Its specific expression may be critical for managing the high transcriptional output required for zymogen production. Additionally, the G-protein subunit [GNAS](/details-gene/2778) highlights the cell's role in signal transduction, likely responding to hormonal and neural cues to regulate secretion. * **Anti-Markers:** The provided data lacks strong negative markers, but the low significance of genes associated with other pancreatic lineages, such as the islet amyloid polypeptide ([IAPP](/details-gene/3375)) characteristic of endocrine beta cells, helps confirm the distinct exocrine identity of the [pancreatic acinar cell](/details-cell/CL0002064). Similarly, the lack of significance for immune-related serine protease inhibitors like [SERPINA3](/details-gene/12) or various developmental transcription factors distinguishes its highly differentiated and specialized state. ## Clinical Significance and Contextual Roles The gene signature of the [pancreatic acinar cell](/details-cell/CL0002064) provides significant insight into its potential roles in pancreatic diseases, particularly pancreatitis. The profound dependence on mitochondrial function suggests an inherent vulnerability to metabolic stress, hypoxia, and mitochondrial toxins. Dysfunction in oxidative phosphorylation could lead to ATP depletion, impairing the tightly regulated processes of enzyme synthesis, folding, and secretion. This could, in turn, trigger the premature activation of digestive enzymes within the cell, a key initiating event in acute pancreatitis. The high expression of genes involved in protein folding and transport, alongside the immense translational load, implies that these cells operate near the threshold of endoplasmic reticulum (ER) stress. Pathological conditions that exacerbate this load or impair folding capacity could activate the unfolded protein response (UPR), which, if unresolved, can lead to inflammation and apoptosis, contributing to pancreatic injury. Furthermore, the identification of [GNAS](/details-gene/2778) as a top marker is clinically relevant. Activating mutations in the [GNAS](/details-gene/2778) gene are associated with various endocrine disorders and are the defining feature of intraductal papillary mucinous neoplasms (IPMNs) of the pancreas, a class of precancerous cysts. This suggests that signaling pathways mediated by [GNAS](/details-gene/2778) are not only central to normal acinar function but may also be key nodes in the initiation of pancreatic neoplasia. ## Potential Mechanisms and Research Directions Based on the unique molecular landscape revealed by this analysis, several hypotheses can be formulated regarding the biology and pathobiology of [pancreatic acinar cells](/details-cell/CL0002064). 1. **Hypothesis: Mitochondrial bioenergetic capacity is the rate-limiting factor for acinar cell function and a primary determinant of its susceptibility to injury.** The unique and extreme enrichment of mitochondrial respiratory chain transcripts suggests that acinar cell health is inextricably linked to its ATP-generating capacity. We propose that subtle defects in mitochondrial function, whether genetic or induced by environmental stressors (e.g., alcohol, ischemia), are sufficient to disrupt zymogen processing and trafficking, leading to intracellular enzyme activation and initiating pancreatitis. * **Surprising Findings:** It is highly unusual for core "housekeeping" genes like mitochondrial components to serve as such exquisitely specific cell type markers. This implies that the *level* of mitochondrial gene expression in acinar cells is orders of magnitude different from most other cell types, elevating it from a simple metabolic necessity to a defining feature of cellular identity. * **Testable Questions:** Can genetically engineering mouse models with partial, acinar-specific defects in mitochondrial complex I (e.g., in [ND4](/details-gene/4538)) replicate the key features of pancreatitis, such as premature trypsinogen activation and inflammatory cell infiltration, when challenged with a mild secretagogue? 2. **Hypothesis: The lncRNA [NEAT1](/details-gene/283131) orchestrates a specialized nuclear environment essential for managing the massive transcriptional output of digestive enzyme genes.** The high specificity of [NEAT1](/details-gene/283131) suggests its role extends beyond general nuclear maintenance. We hypothesize that [NEAT1](/details-gene/283131)-dependent paraspeckles function as a critical post-transcriptional hub in acinar cells, regulating the splicing, stability, and nuclear export of highly abundant enzyme-coding mRNAs to prevent translational overload and ER stress. * **Surprising Findings:** The significance of a structural non-coding RNA ([NEAT1](/details-gene/283131)) rivals that of core metabolic protein-coding genes. This places nuclear architecture on par with energy metabolism as a cornerstone of the acinar cell's specialized state, a connection that is not widely emphasized. * **Testable Questions:** Does conditional knockout of [NEAT1](/details-gene/283131) in pancreatic acinar cells lead to missplicing of zymogen-related transcripts, accumulation of polyadenylated RNAs in the nucleus, and spontaneous activation of the unfolded protein response pathway?