Details for: CL0010012

Cell ID: CL0010012

Cell Name: cerebral cortex neuron

Description: A CNS neuron of the cerebral cortex.

Synonyms: cortical neuron, neuron of cerebral cortex

Selected Context(s): Overall

Gene Significance Landscape

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Score:
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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 cerebral cortex neuron 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 cerebral cortex neuron. 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 cerebral cortex neuron. 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 cerebral cortex neuron. 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:  cerebral cortex neuron (CL0010012)

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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 A [cerebral cortex neuron](/details-cell/CL0010012) is a specialized neuron of the central nervous system located in the cerebral cortex. Based on its gene significance profile, this cell is fundamentally defined by the highly specific expression of a diverse array of genes crucial for synaptic transmission, neuronal excitability, and the structural maintenance of neural circuits. The prominent expression of both glutamatergic receptors like [GRM5](/details-gene/2915) and GABAergic receptors like [GABRB1](/details-gene/2560) underscores its central role in processing both excitatory and inhibitory signals, which is the cornerstone of cortical computation. ## Key Characteristics and Function The functional identity of the [cerebral cortex neuron](/details-cell/CL0010012) is established by a unique and highly specific gene expression signature. **Overall**, this signature can be organized into several key functional clusters: * **Synaptic Transmission and Neurotransmitter Receptors:** This cell type shows highly specific expression of numerous neurotransmitter receptor subunits. These include the metabotropic glutamate receptor [GRM5](/details-gene/2915), the AMPA-type ionotropic glutamate receptor [GRIA4](/details-gene/2893), and the glutamate receptor [GRID1](/details-gene/2894), highlighting its role in excitatory neurotransmission. Concurrently, high specificity for GABA-A receptor subunits like [GABRB1](/details-gene/2560) and [GABRG3](/details-gene/2567) indicates a sophisticated capacity for integrating inhibitory signals. The protein [ERC2](/details-gene/26059) further supports this role through its function in synaptic vesicle priming. * **Neuronal Excitability and Ion Channel Activity:** The cell's electrical properties are defined by a specific suite of ion channels and transporters. Key markers include [HCN1](/details-gene/348980), a hyperpolarization-activated "pacemaker" channel; [SCN2A](/details-gene/6326), a voltage-gated sodium channel; [KCND2](/details-gene/3751), a voltage-gated potassium channel; and [ANO4](/details-gene/121601), a calcium-gated chloride channel. Ion homeostasis is underscored by the specific expression of the calcium pump [ATP2B2](/details-gene/491) and the sodium-calcium exchanger [SLC24A2](/details-gene/25769). * **Neuronal Development, Adhesion, and Plasticity:** A significant number of top markers are involved in building and maintaining the complex architecture of neural circuits. These include the transcription factor [MYT1L](/details-gene/23040), which is involved in neuronal differentiation, and [CSMD3](/details-gene/114788), which regulates dendrite development. Cell-cell interactions and synaptic organization are highlighted by adhesion molecules such as [OPCML](/details-gene/4978), [LRRTM4](/details-gene/80059), cadherins ([CDH8](/details-gene/1006) and [CDH18](/details-gene/1016)), and contactin-associated proteins like [CNTNAP5](/details-gene/129684). Furthermore, genes like [NETO1](/details-gene/81832) (implicated in memory) and [NRG3](/details-gene/10718) (neuregulin signaling) suggest roles in synaptic plasticity and cell survival. In contrast, the anti-markers for this cell type are dominated by ubiquitously expressed housekeeping genes. The strong negative significance scores for genes involved in mitochondrial respiration (e.g., [COX1](/details-gene/4512), [ATP6](/details-gene/4508), [ND1](/details-gene/4535)) and general cellular processes like ubiquitination ([UBC](/details-gene/7316), [UBB](/details-gene/7314)) and RNA processing ([DDX5](/details-gene/1655), [HNRNPA2B1](/details-gene/3181)) do not imply their absence. Rather, this pattern suggests that the defining characteristic of a [cerebral cortex neuron](/details-cell/CL0010012) is its highly specialized machinery for neural function, not a unique profile of basal metabolic or housekeeping activities. ## Clinical Significance and Contextual Roles The genes that define the [cerebral cortex neuron](/details-cell/CL0010012) are frequently implicated in neurological and psychiatric disorders. The high specificity of ion channel genes such as [SCN2A](/details-gene/6326) and receptor genes like [GABRB1](/details-gene/2560) is consistent with the known role of channelopathies and receptor dysfunction in seizure disorders. For instance, a publication notes a link between [CSMD3](/details-gene/114788) and benign adult familial myoclonic epilepsy ([Link](https://doi.org/10.1016/s0006-291x(03)01555-9)). This suggests that the precise expression levels of these specific markers are critical for maintaining the delicate balance of excitation and inhibition in the cortex, a balance that is disrupted in epilepsy. Furthermore, the specific expression of [GRIA4](/details-gene/2893), which is involved in amyloid-beta binding, may indicate a potential role for this cell in the pathophysiology of Alzheimer's disease. The disruption of genes crucial for neuronal structure and synaptic plasticity, such as [NETO1](/details-gene/81832) and the cadherins, could contribute to the cognitive decline observed in neurodegenerative diseases and neurodevelopmental disorders. Therefore, the unique molecular signature of this neuron not only defines its function in a healthy state but also highlights its vulnerability in various disease contexts. ## Potential Mechanisms and Research Directions 1. **Hypothesis: The specific "constellation" of neurotransmitter receptor and ion channel subunits defines the computational function and disease susceptibility of cortical circuits.** The data show that it is not one single gene but a large, diverse set of specific receptor subunits (e.g., [GRM5](/details-gene/2915), [GRIA4](/details-gene/2893), [GABRB1](/details-gene/2560)) and ion channels (e.g., [HCN1](/details-gene/348980), [SCN2A](/details-gene/6326), [KCND2](/details-gene/3751)) that uniquely identify this neuron. We hypothesize that the precise stoichiometry of these proteins sets the integrative properties (e.g., firing patterns, synaptic integration windows) of a given neuron, and subtle shifts in this molecular composition are a primary mechanism underlying pathologies like epilepsy. * **Surprising Findings:** It is notable that both excitatory (glutamate) and inhibitory (GABA) receptor subunits are among the top-ranked specific markers. This suggests that the machinery for both forms of signaling is co-regulated with high specificity, rather than one dominating the cell's identity. * **Testable Questions:** Using spatial transcriptomics, can we map the expression ratios of key excitatory ([GRIA4](/details-gene/2893)) versus inhibitory ([GABRB1](/details-gene/2560)) receptor subunits across different cortical layers, and do these ratios correlate with the known electrophysiological properties of neurons in those layers? 2. **Hypothesis: The active maintenance of neuronal architecture via specific adhesion and cytoskeletal-associated proteins is a critical, ongoing function of mature cortical neurons.** The high specificity of genes like [CSMD3](/details-gene/114788) (dendrite development), [OPCML](/details-gene/4978) (opioid-binding cell adhesion), and various cadherins ([CDH8](/details-gene/1006), [CDH18](/details-gene/1016)) suggests that synaptic structure is not static after development but requires continuous, active maintenance. We propose that these molecules are central to the structural component of long-term plasticity and that their dysregulation could be an early event in neurodegenerative processes that manifest as synaptic loss. * **Surprising Findings:** The prominence of [MYT1L](/details-gene/23040), a transcription factor involved in neuronal reprogramming and differentiation, as a top marker in what is presumably a mature neuronal population is unexpected. This may indicate a role for this factor beyond initial development, potentially in maintaining the terminally differentiated state or regulating plasticity-related gene expression. * **Testable Questions:** Does conditional knockout of [CSMD3](/details-gene/114788) or [OPCML](/details-gene/4978) in the adult mouse cortex lead to a progressive loss of dendritic spines or impair performance in memory-related behavioral tasks?