C-fos Staining
C-fos Staining - Related Videos
05:44
The c-FOS Protein Immunohistological Detection: A Useful Tool As a Marker of Central Pathways Involved in Specific Physiological Responses In Vivo and Ex Vivo
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Cited by 44 •
2016
Here, we present a protocol based on c-FOS protein immunohistological detection, a classical technique used for the identification of neuronal populations involved in specific physiological responses in vivo and ex vivo.
08:07
Simultaneous Detection of c-Fos Activation from Mesolimbic and Mesocortical Dopamine Reward Sites Following Naive Sugar and Fat Ingestion in Rats
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Cited by 24 •
2016
The goal of this study is to identify reward-related distributed brain networks by delineating a reliable immunohistological technique using cellular c-fos activation to measure simultaneous changes in dopamine pathways and terminal sites after novel ingestion of fat and sugar in rats.
08:37
Fluorescence Activated Cell Sorting (FACS) and Gene Expression Analysis of Fos-expressing Neurons from Fresh and Frozen Rat Brain Tissue
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Cited by 34 •
2016
Here we present a Fluorescence Activated Cell Sorting (FACS) protocol to study molecular alterations in Fos-expressing neuronal ensembles from both fresh and frozen brain tissue. The use of frozen tissue allows FACS isolation of many brain areas over multiple sessions to maximize the use of valuable animal subjects.
10:09
Methods for Evaluating the Role of c-Fos and Dusp1 in Oncogene Dependence
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2019
Here, we describe protocols for the genetic and chemical validation of c-Fos and Dusp1 as a drug target in leukemia using in vitro and in vivo genetic and humanized mouse models. This method can be applied to any target for genetic validation and therapeutic development.
11:33
Microscopy and Staining: Gram, Capsule, and Endospore Staining
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2023
Source: Rhiannon M. LeVeque1, Natalia Martin1, Andrew J. Van Alst1, and Victor J. DiRita1 1 Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America Bacteria are diverse microorganisms found nearly everywhere on Earth. Many properties help distinguish them from each other, including but not limited to Gram-staining type, shape and arrangement, production of capsule, and formation of spores. To observe these properties, one...
FAQs
Neural stimulation can initiate transcription of the immediate-early gene c-fos, which is then followed by production of c-Fos protein. Immunohistochemistry detects that protein with specific antibodies, producing labeled nuclei in fixed brain sections. This sequence connects an earlier cellular response to a later anatomical signal that can be examined across nervous tissue.
C-Fos expression develops over minutes to hours rather than appearing instantaneously with neural activity. Consequently, staining reflects a recent history of increased cellular activity within that interval, not a real-time record of firing. The timing between stimulation and tissue fixation therefore influences which responses are captured and how precisely they can be assigned to an event.
The distribution of labeled nuclei provides spatial information about where increased cellular activity occurred. Comparing regions or neuronal populations can help associate particular anatomical areas with sensory processing, behavior, stress, learning, or disease-related activity. However, labeling indicates an association with recent activation and does not by itself establish that a region uniquely caused the observed response.
A basic workflow begins with a neural stimulation or experimental condition, followed by a sufficient interval for c-fos transcription and c-Fos protein production. Nervous tissue is then fixed, sectioned, and exposed to antibodies against c-Fos. The resulting labeled nuclei are examined in the brain sections to map activity across regions or cell populations.
Researchers may choose C-fos staining when they need anatomical localization of activity after sensory stimulation, behavior, stress, learning, or a disease-related condition. Its strength is the ability to compare labeled cells within fixed brain sections. The tradeoff is limited temporal resolution, because the signal develops over minutes to hours and represents indirect cellular activation.
In behavioral or disease-related studies, researchers can examine which brain regions and neuronal populations show increased c-Fos labeling after the relevant condition. These patterns help connect nervous-system activity with observed responses such as stress, learning, or sensory processing. Interpretation remains comparative and spatial, since staining does not provide an instantaneous measure of neural activity.