Region-specific Protein Analysis
Region-specific Protein Analysis - Related Videos
05:31
Micro-dissection of Rat Brain for RNA or Protein Extraction from Specific Brain Region
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Cited by 171 •
2007
Micro-dissection of rat brain into various regions is extremely important for the study of different neurodegenerative diseases. This video demonstrates micro-dissection of four major brain regions include olfactory bulb, frontal cortex, striatum and hippocampus in fresh rat brain tissue. Useful tips for quick removal of respective regions to avoid RNA and protein degradation of the tissue are given.
09:26
Isolation of Specific Genomic Regions and Identification of Associated Molecules by enChIP
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Cited by 4 •
2016
The identification of molecules associated with specific genomic regions of interest is required to understand the mechanisms of regulation of the functions of these regions. This protocol describes procedures to perform engineered DNA-binding molecule-mediated chromatin imunoprecipitation (enChIP) for identification of proteins and RNAs associated with a specific genomic region.
04:47
Evaluation of Ribbon Synapses at Specific Frequency Regions of Mouse Cochlea
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2025
This video demonstrates a method for evaluating ribbon synapses in specific regions of the mouse cochlea. It utilizes immunostaining and confocal imaging techniques to identify functional synapses across different frequency regions in each cochlear turn.
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.
11:25
Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
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Cited by 42 •
2016
This protocol presents a method to perform quantitative, single-cell in situ analysis of protein expression to study lineage specification in mouse preimplantation embryos. The procedures necessary for collection of blastocysts, whole-mount immunofluorescent detection of proteins, imaging of samples on a confocal microscope, and nuclear segmentation and image analysis are described.
FAQs
Preserving the identity of the sampled region lets investigators relate altered proteins to particular neural circuits rather than treating the brain as uniform tissue. Region-to-region comparisons can therefore reveal spatial patterns in signaling or synaptic proteins, while comparisons across conditions or time points show how those patterns change.
These measurements address different aspects of the same protein landscape: abundance indicates how much protein is present, localization indicates where it occurs within the defined sample, and molecular state captures its condition or form. Selecting among these readouts helps align the experiment with questions about signaling, synaptic organization, or disease-associated change.
Researchers can compare distinct anatomical areas, experimental conditions, or time points. Each comparison answers a different question: regional contrasts expose spatial organization, condition contrasts identify changes associated with an intervention or state, and time-course comparisons follow progression or development. Interpreting the result depends on keeping the sampled region and comparison framework aligned.
Investigators first isolate the selected brain region or cell population, then extract its proteins before measuring them with an immunoassay, electrophoresis, or mass spectrometry. The chosen analytical approach determines how proteins are identified or quantified. Maintaining the region or population distinction throughout sampling and analysis is essential for retaining spatial meaning.
These methods all support protein measurement, but they represent distinct analytical approaches for identifying or quantifying proteins after extraction. Their shared value is that they can be applied to material from a selected region or cell population. This allows investigators to connect measured protein patterns with anatomical comparisons rather than reporting an undifferentiated brain-wide result.
It can support studies of development, behavior, neurodegeneration, and responses to therapeutic intervention. In each setting, regional measurements help determine whether protein changes are associated with particular brain areas or cell populations. The resulting spatial information can be used to characterize signaling pathways, synaptic proteins, and disease-associated changes in relation to brain function.