Neuronal Protein Trafficking
Neuronal Protein Trafficking - Related Videos
06:18
Brain Slice Biotinylation: An Ex Vivo Approach to Measure Region-specific Plasma Membrane Protein Trafficking in Adult Neurons
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Cited by 28 •
2014
Neuronal membrane trafficking dynamically controls plasma membrane protein availability and significantly impacts neurotransmission. To date, it has been challenging to measure neuronal endocytic trafficking in adult neurons. Here, we describe a highly effective, quantitative method to measure rapid changes in surface protein expression ex vivo in acute brain slices.
03:38
Imaging GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
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2025
Source: Changou, C. A., et. al. Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy. J. Vis. Exp. (2017).This video showcases the imaging of insulin-induced GLUT4 translocation in hypothalamic neurons, employing deconvolution microscopy to capture and analyze GFP-GLUT4 trafficking dynamics with high resolution.
07:55
Imaging the Intracellular Trafficking of APP with Photoactivatable GFP
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Cited by 6 •
2015
While the transport of cell surface proteins is relatively easily studied, visualizing the trafficking of intracellular proteins is much more difficult. Here, we use constructs incorporating photoactivatable GFP and demonstrate a method to accurately follow the amyloid precursor protein from the Golgi apparatus to down-stream compartments and follow its clearance.
08:47
Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy
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Cited by 8 •
2017
This protocol describes a technique for observation of real-time Green Fluorescence Protein (GFP) tagged Glucose Transporter 4 (GLUT4) protein trafficking upon insulin stimulation and characterization of the biological role of CCR5 in the insulin–GLUT4 signaling pathway with Deconvolution Microscopy.
11:27
Analysis of SCAP N-glycosylation and Trafficking in Human Cells
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Cited by 17 •
2016
We describe a modified method for membrane fraction isolation from human cells and sample preparation for the detection of SCAP N-glycosylation and total protein by using western blot. We further introduce a GFP-labeling method to monitor SCAP trafficking using confocal microscopy. This protocol can be used in regular biology laboratories.
FAQs
Sorting signals help distinguish cargo and direct it into membrane-bound vesicles before transport begins. These vesicles provide mobile compartments for receptors, ion channels, enzymes, and structural proteins, while destinations such as axons, dendrites, or synapses determine where the cargo can function. This selectivity supports the specialized organization required by different neuronal regions.
Kinesin and dynein act as transport motors that move protein-containing vesicles along polarized microtubules. This organized cytoskeletal network provides routes through the extended structure of a neuron, allowing cargo to reach distinct cellular compartments. Motor-dependent transport therefore links intracellular sorting with the delivery of functional proteins to axons, dendrites, and synapses.
Neurons adjust protein delivery and recycling according to local cellular demands. Synapses, dendrites, and axons may require different receptors, channels, enzymes, or structural proteins as neuronal activity and function change. Regulated trafficking helps maintain these regional requirements, supporting synaptic signaling and plasticity rather than relying on a fixed distribution of cellular components.
Live-cell imaging provides a way to follow trafficking within neurons and examine how cargo moves through their specialized compartments. Researchers can pair these observations with biochemical assays to study the associated pathways and genetic manipulation to test the contribution of selected components. Together, these approaches help connect trafficking behavior with neuronal function and disease relevance.
Biochemical assays complement movement-based observations by examining trafficking pathways and their molecular components. They can be used alongside live-cell imaging and genetic manipulation to relate protein delivery or recycling to specific cellular processes. This combination gives researchers a broader view of how sorting, vesicle transport, and motor activity contribute to neuronal organization.
Genetic manipulation is useful when researchers need to test how particular trafficking components affect neuronal outcomes. By examining changes in protein delivery or recycling, investigators can relate altered pathways to neuronal development, synaptic signaling, plasticity, or circuit function. The approach also helps explore how trafficking defects may contribute to neurodegenerative disease.
Trafficking supports synaptic plasticity by helping deliver and recycle proteins at synapses, where changes in cellular components influence signaling. Receptors, ion channels, enzymes, and structural proteins must reach appropriate neuronal regions to function effectively. When cargo delivery or recycling is impaired, synaptic communication and broader circuit function can be disrupted.
A disease-related link can emerge when imaging, biochemical assays, or genetic manipulation show disrupted cargo delivery or recycling alongside impaired neuronal function. Researchers can then examine whether altered trafficking affects development, synaptic signaling, plasticity, or circuit activity. These findings help connect cellular transport defects with the functional consequences associated with neurodegenerative disease.