Brain Kyna Formation
Brain Kyna Formation - Related Videos
03:31
Immunological Synapse Formation Between Helper T Cells and Antigen-Presenting Cells
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2025
This video demonstrates the in vitro study of immunological synapse formation between an antigen-presenting cell and helper T lymphocytes using a fluorescence microscope. T cell receptors of helper T lymphocytes interact with an antigen-MHC-II complex in antigen-presenting cells and form immunological synapses, followed by secretory vesicle movements toward the synapse, which is visualized by fluorescent microscopy.
15:39
Studying Organelle Dynamics in B Cells During Immune Synapse Formation
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Cited by 8 •
2019
Herein we describe two approaches to characterize cell polarization events in B lymphocytes during the formation of an IS. The first, involves quantification of organelle recruitment and cytoskeleton rearrangements at the synaptic membrane. The second is a biochemical approach, to characterize changes in composition of the centrosome, which undergoes polarization to the immune synapse.
07:44
Evaluation of Synapse Density in Hippocampal Rodent Brain Slices
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Cited by 29 •
2017
A protocol for accurately identifying and analyzing synapses in hippocampal slices using immunofluorescence is outlined in this article.
03:05
In Vitro Bacterial Transinfection of T Cells via Immunological Synapse Formation
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2025
Source: Cruz-Adalia, A., et al. T Cells Capture Bacteria by Transinfection from Dendritic Cells. J. Vis. Exp. (2016).This video demonstrates bacterial transinfection through antigen-specific T cell–dendritic cell interactions. Bacteria-infected dendritic cells presenting ovalbumin peptide are incubated with T cells, either directly or separated by a membrane. Direct contact allows immunological synapse formation, enabling bacterial transfer, while the membrane prevents interaction. Gentamicin...
02:26
Generating 3D Co-culture Spheres of Astrocytes and Neurons to Induce Synapse Formation
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2025
This video demonstrates a procedure for co-culturing the astrocytes and neurons to form 3D spheres. These 3D spheres provide a distinct platform for examining synapse formation and neural network integration, thereby serving as a potential model for research in developmental neuroscience, neurodegenerative diseases, and neuropharmacological interventions.
FAQs
Kynurenine aminotransferases control the conversion of kynurenine into KynA through transamination, a reaction that transfers an amino group to form the metabolite. Because this enzymatic step determines how much kynurenine enters the KynA-producing route, it provides a key control point for regulating KynA accumulation in neural tissue and for examining downstream effects on signaling.
These receptors connect KynA production with two major signaling systems. NMDA receptors participate in glutamatergic communication, whereas α7 nicotinic acetylcholine receptors participate in cholinergic communication. By inhibiting both receptor types, KynA can influence how neural cells respond to excitatory and cholinergic signals, providing a mechanistic link between metabolism and altered neural processing.
Changes in KynA accumulation may alter the degree to which NMDA and α7 nicotinic acetylcholine receptors are inhibited. That relationship makes metabolite accumulation more than a biochemical measurement: it can indicate a shift in glutamatergic and cholinergic regulation. Researchers can therefore use KynA levels to examine how tryptophan metabolism may influence neural communication relevant to behavior.
A supported approach begins by examining tryptophan metabolism and the kynurenine-to-KynA conversion catalyzed by kynurenine aminotransferases. The analysis can then consider effects on NMDA and α7 nicotinic acetylcholine receptor signaling before relating those effects to cognition, sensory processing, or behavioral changes. This sequence keeps biochemical production, receptor modulation, and behavioral interpretation connected.
Brain KynA formation provides a way to connect a metabolic event with neural functions that depend on glutamatergic and cholinergic signaling. Since KynA can inhibit receptors in both systems, studying its production and accumulation helps researchers evaluate how altered receptor regulation might relate to cognitive processes, sensory processing, and associated behavioral changes.
The pathway is relevant because it links tryptophan metabolism to receptor systems that influence neural communication and behavior. Investigations can use this connection to examine whether changes in KynA production or accumulation correspond with cognitive, sensory, or behavioral alterations. Such work informs broader studies of neurological and psychiatric disorders without treating the metabolic pathway as an isolated biochemical event.