Neuron-specific Promoter
Neuron-specific Promoter - Related Videos
10:58
Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean
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Cited by 15 •
2017
Promoter expression analyses are crucial to improving the understanding of gene regulation and the spatiotemporal expression of target genes. Herein we present a protocol to identify, isolate, and clone a plant promoter. Further, we describe the characterization of the nodule-specific promoter in the common bean hairy roots.
03:32
Using a Macrophage Conditioned Medium to Promote Neuron Extensions
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2025
This video demonstrates an assay for promoting the growth of neuron projections known as neurite outgrowth using the macrophage-conditioned medium. Co-culture neurons and macrophages with cAMP and harvest the macrophage-derived conditioned medium. Growing the neurons with the conditioned medium promotes neurite outgrowths. These outgrowths are fluorescently labeled and visualized using a fluorescence microscope.
09:27
Cell Subtype-specific Analysis of Neuronal Membrane Proteasome in Somatosensory Neurons
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2025
The neuronal membrane proteasome (NMP) was recently identified in a subset of somatosensory neurons as a key regulator of touch, pain, and itch perception. This article presents a robust workflow for analyzing cell-type-specific NMP expression and function using cell sorting, transcriptome profiling, and culture-based immunofluorescent analyses.
10:49
The Specification of Telencephalic Glutamatergic Neurons from Human Pluripotent Stem Cells
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Cited by 38 •
2013
This procedure yields telencephalic neurons by going through checkpoints which are similar to those observed during human development. The cells are allowed to spontaneously differentiate, are exposed to factors which push them towards the neural lineage, are isolated, and are plated onto coverslips to allow for terminal differentiation and maturation.
02:40
The Eukaryotic Promoter Region
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2020
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
FAQs
Selectivity depends on whether the promoter's regulatory elements are recognized by the available transcription factors and associated regulatory proteins. Those interactions influence RNA polymerase recruitment and therefore determine where transcription begins. In experimental systems, this molecular dependence helps explain why the same construct may behave differently across neuronal cell types.
Its selectivity matters because restricting expression to intended neuronal cells can reduce unintended effects in experiments and gene-delivery systems. However, preferential activity should not be treated as uniform across all neurons. Cell type, developmental stage, and experimental context can change promoter activity, so conclusions require attention to where and when expression occurs.
Changes in developmental stage may alter which regulatory proteins are present or active in a neuronal cell. Because promoter function depends on recognition of promoter elements and recruitment of RNA polymerase, such shifts can modify transgene expression without changing the encoded protein. This is important when comparing developing and mature nervous systems.
A candidate promoter can be tested with a chosen transgene in cultured neurons, animal models, or a gene-delivery system. The key comparison is whether expression occurs preferentially in neurons rather than non-neuronal cells. Repeating this assessment across relevant cell types, developmental stages, and experimental contexts reveals how consistently the regulatory sequence performs.
Choice of transgene determines what promoter-directed expression can reveal. Fluorescent reporters can support visualization of neuronal patterns, whereas optogenetic actuators can be used to examine neuronal function. Therapeutic proteins provide a route for testing targeted genetic activity in nervous-system models. Matching the promoter-controlled cargo to the research question makes the resulting expression more informative.
A promoter's value in neuroscience extends beyond turning a gene on: it can help localize experimental activity to neuronal populations while limiting effects in non-neuronal cells. This supports circuit-mapping studies, analyses of neuronal function, and exploration of therapeutic proteins in cultured neurons, animal models, or delivery systems. Interpretation still depends on context-specific activity.