C-fos Immunofluorescence
C-fos Immunofluorescence - Related Videos
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.
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.
08:37
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.
09:56
Immunofluorescence Microscopy: Immunofluorescence Staining of Paraffin-Embedded Tissue Sections
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2023
Source: Thomas Chaffee1, Thomas S. Griffith2,3,4, and Kathryn L. Schwertfeger1,3,4 1 Department of Lab Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455 2 Department of Urology, University of Minnesota, Minneapolis, MN 55455 3 Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 4 Center for Immunology, University of Minnesota, Minneapolis, MN 55455 Pathologic analyses of tissue sections can be used to obtain a better understanding of normal tissue...
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.
FAQs
Its interpretive value comes from detecting c-Fos protein after cells or tissues have responded to a stimulus. Because the signal is localized to nuclei, investigators can identify which cells show activation within a defined anatomical region. This makes the method useful for relating cellular responses to specific locations, treatments, injuries, or disease-associated processes.
The primary antibody provides recognition by binding c-Fos protein, while the fluorescently labeled secondary antibody makes that binding visible under a fluorescence microscope. This two-antibody arrangement converts molecular recognition into a localized optical signal. The resulting nuclear fluorescence allows researchers to identify c-Fos-positive cells and examine their distribution in fixed specimens.
Nuclear localization connects the fluorescent signal with the cells that contain detectable c-Fos protein rather than with surrounding tissue alone. Investigators can therefore assess both the position and cellular pattern of activation. Counting fluorescent c-Fos-positive nuclei adds a quantitative dimension, helping compare activation across anatomical regions or experimental conditions.
The method preserves the location of labeled cells within fixed tissue, so fluorescence can be examined across defined anatomical areas. Researchers may identify concentrated or distributed patterns of c-Fos-positive cells and relate them to cellular responses. This spatial information is particularly relevant when activation differs among neural or other tissue regions after injury, treatment, or disease-related changes.
A basic workflow uses fixed cells or tissue, applies a primary antibody directed against c-Fos, and then adds a fluorescently labeled secondary antibody. The prepared specimen is examined with a fluorescence microscope, with attention to nuclear signal. Quantifying c-Fos-positive cells can then provide a numerical description of the observed activation pattern.
In medicine and biomedical research, C-fos immunofluorescence can be applied to map activated neurons and evaluate cellular responses to injury or treatment. It also supports studies of pain, stress, inflammation, and disease-related signaling. By showing where activation occurs, the method can help investigate how therapeutic interventions affect cellular pathways.
Researchers can examine c-Fos-positive cell patterns after a treatment and determine whether activation changes in particular cells or tissue regions. These measurements provide evidence about treatment-associated cellular responses and signaling pathways. The approach does not merely record fluorescence; its value lies in connecting quantified activation patterns with possible therapeutic effects in biomedical experiments.