Details for: CL4023064

Cell ID: CL4023064

Cell Name: caudal ganglionic eminence derived cortical interneuron

Description: An interneuron that is derived from the caudal ganglionic eminence.

Synonyms: CGE interneuron, CGE-derived GABAergic IN, CGE-derived cell, CGE-derived interneuron, caudal ganglionic eminence derived GABAergic interneuron

Selected Context(s): Overall

Gene Significance Landscape

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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 caudal ganglionic eminence derived cortical interneuron 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 caudal ganglionic eminence derived cortical interneuron. 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 caudal ganglionic eminence derived cortical interneuron. 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 caudal ganglionic eminence derived cortical interneuron. 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.

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Target Cell for CSI:  caudal ganglionic eminence derived cortical interneuron (CL4023064)

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Node size also reflects Target Cell CSI magnitude.
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Edges (Interactions):
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 Colors vary by pathway category; default arrow applies.

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## Summary The [caudal ganglionic eminence derived cortical interneuron](/details-cell/CL4023064) is a type of GABAergic inhibitory neuron that originates in the caudal ganglionic eminence (CGE) during embryonic development and migrates to the cerebral cortex. Based on its gene significance profile, this cell is highly specialized for synaptic modulation and circuit integration. The high specificity scores (**csi_z**) for genes involved in RNA splicing ([DDX17](/details-gene/10521)), neurotransmitter reception ([GRM5](/details-gene/2915), [GABRB2](/details-gene/2561)), and cell adhesion ([CSMD3](/details-gene/164796)) suggest a sophisticated molecular machinery dedicated to establishing precise connectivity and regulating neuronal excitability within cortical microcircuits. ## Key Characteristics and Function **Overall**, the gene expression landscape of the [CGE-derived interneuron](/details-cell/CL4023064) underscores its role as a key regulator of cortical information processing. The top markers can be grouped into distinct functional clusters that define the cell's core identity. * **Synaptic Transmission and Signal Reception:** A prominent feature of this interneuron is the specific expression of genes encoding neurotransmitter receptors and synaptic machinery. High significance is observed for [GRM5](/details-gene/2915), a metabotropic glutamate receptor, and subunits of the GABA-A receptor, including [GABRB2](/details-gene/2561) and [GABRG3](/details-gene/2567). This indicates that the cell is finely tuned to respond to both excitatory (glutamate) and inhibitory (GABA) inputs. Furthermore, the high specificity of genes like [SYN2](/details-gene/6854) (Synapsin II) and the voltage-gated potassium channel [KCND2](/details-gene/3751) points to a specialization in neurotransmitter release and the regulation of action potential firing. * **Circuit Assembly and Synaptic Adhesion:** The cell expresses a remarkable array of specific cell adhesion and guidance molecules, suggesting a critical role in establishing and maintaining precise synaptic connections. Genes such as [CSMD3](/details-gene/164796), [CSMD1](/details-gene/64478), [CNTNAP5](/details-gene/129684), [CNTNAP4](/details-gene/85445), and [KIRREL3](/details-gene/84623) are all highly specific markers. This molecular repertoire likely governs the complex processes of neuronal migration, dendritic arborization, and the selection of appropriate synaptic partners during cortical development. * **Post-Transcriptional Regulation:** The top-ranking marker, [DDX17](/details-gene/10521), is a DEAD-box RNA helicase involved in alternative splicing. Its high specificity, along with that of other RNA-binding proteins like [PNISR](/details-gene/25957) and [ARGLU1](/details-gene/55082), strongly suggests that post-transcriptional gene regulation is a central mechanism for generating the functional diversity and specificity required by this interneuron subtype. * **Intracellular Signaling:** Key signaling components such as [GNAS](/details-gene/2778) (a G-protein alpha subunit) and [CALM1](/details-gene/801) (Calmodulin 1) are also defining markers. These molecules act as crucial hubs, translating signals from cell-surface receptors into downstream physiological responses, thereby modulating the cell's activity in response to its microenvironment. The **Anti_Markers** profile further refines the cell's identity. The low specificity scores for ubiquitous housekeeping genes ([GAPDH](/details-gene/2597), [TPT1](/details-gene/7178)), ribosomal proteins ([SRP14](/details-gene/6727)), and genes involved in mitochondrial respiration ([COX3], [ND5](/details-gene/4540)) indicate that while these functions are present, they are not distinguishing features compared to other cell types. The negative significance of immune-related genes like [B2M](/details-gene/567) and genes specific to other sensory systems, such as [STRC](/details-gene/161497) (stereocilia) and [OR2AG2](/details-gene/338755) (olfactory receptor), confirms its distinct cortical interneuron lineage. ## Clinical Significance and Contextual Roles While this analysis does not differentiate between health and disease, the specific marker genes of the [CGE-derived interneuron](/details-cell/CL4023064) have been implicated in various neurological and psychiatric disorders. Dysfunction of these inhibitory neurons is a key hypothesis in the pathophysiology of conditions characterized by an imbalance of cortical excitation and inhibition. * The high significance of GABA receptor subunits like [GABRB2](/details-gene/2561), which has been linked to psychotic disorders in some studies ([Link](https://doi.org/10.1371/journal.pone.0006977)), suggests that alterations in this cell type could contribute to conditions such as schizophrenia. * The CUB and Sushi multiple domain proteins [CSMD1](/details-gene/64478) and [CSMD3](/details-gene/164796) are also highly specific. [CSMD3](/details-gene/164796) has been identified as a candidate gene for benign adult familial myoclonic epilepsy ([Link](https://doi.org/10.1016/s0006-291x(03)01555-9)), highlighting a potential role for this interneuron in regulating cortical hyperexcitability and seizure thresholds. * Given the strong signature of genes involved in neuronal migration and synapse formation ([CNTNAP4](/details-gene/85445), [KIRREL3](/details-gene/84623)), defects in the developmental wiring of these interneurons could plausibly contribute to neurodevelopmental disorders such as autism spectrum disorder or intellectual disability. Collectively, the data suggest that the [CGE-derived interneuron](/details-cell/CL4023064) is a central player in maintaining cortical circuit stability, and its disruption is a plausible contributor to a range of severe neurological conditions. ## Potential Mechanisms and Research Directions 1. **Hypothesis:** The high specificity of the RNA helicase [DDX17](/details-gene/10521) and other splicing factors ([PNISR](/details-gene/25957), [ARGLU1](/details-gene/55082)) indicates that alternative splicing is a primary driver of functional heterogeneity within CGE-derived interneuron populations. This mechanism may generate a diverse array of ion channel, receptor, and adhesion molecule isoforms, enabling these interneurons to integrate into distinct cortical circuits with unique physiological properties. * **Surprising Findings:** The most specific marker for this neuronal subtype is not a canonical neurotransmitter receptor or ion channel, but a core component of the RNA processing machinery. This finding elevates the importance of post-transcriptional regulation from a general cellular process to a defining feature of this interneuron's identity. * **Testable Questions:** Does conditional inactivation of [DDX17](/details-gene/10521) in CGE-derived precursors lead to predictable changes in the splicing patterns of key neuronal genes like [KCND2](/details-gene/3751) or [GABRB2](/details-gene/2561)? Do such manipulations result in altered electrophysiological properties or incorrect circuit integration of these interneurons in vivo? 2. **Hypothesis:** The concurrent high expression of multiple, distinct families of cell adhesion molecules (e.g., [CSMD](/details-gene/64478), [CNTNAP](/details-gene/85445), [LINGO2](/details-gene/158038), [KIRREL3](/details-gene/84623)) suggests that CGE-derived interneurons use a complex combinatorial "adhesion code" to navigate the cortical environment and select specific synaptic partners. This code may be essential for establishing the precise balance of inhibition required for proper cortical function. * **Surprising Findings:** The diversity of highly specific adhesion molecules is notable. Instead of relying on a single family of guidance cues, this interneuron appears to utilize a broad toolkit, suggesting a sophisticated system for recognizing and forming connections with multiple target cell types in different cortical layers. * **Testable Questions:** Can proteomic methods identify the specific binding partners for [CSMD3](/details-gene/164796) and [CNTNAP4](/details-gene/85445) on the surface of pyramidal neurons or other interneurons? Does CRISPR-mediated disruption of these genes in vivo alter the laminar distribution, dendritic morphology, or synaptic targeting of CGE-derived interneurons?