Endogenous Mxa Detection
Endogenous Mxa Detection - Related Videos
08:55
Characterization of Multi-subunit Protein Complexes of Human MxA Using Non-denaturing Polyacrylamide Gel-electrophoresis
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Cited by 3 •
2016
This article describes a simple and rapid protocol to evaluate the oligomeric state of the dynamin-like GTPase MxA protein from lysates of human cells using a combination of non-denaturing PAGE with western blot analysis.
08:39
Affinity Labeling Detection of Endogenous Receptors from Zebrafish Embryos
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Cited by 1 •
2016
A novel technique for the detection of low abundance endogenous receptors present in zebrafish embryos is described. We have named it AFLIP because it consists of affinity labeling of the receptor by its ligand linked to immunoprecipitation.
10:00
Use of Enzymatic Biosensors to Quantify Endogenous ATP or H2O2 in the Kidney
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Cited by 12 •
2015
Enzymatic microelectrode biosensors enable real-time measurements of extracellular cell signaling in biologically-relevant concentrations. The following protocols extend the applications of biosensors to the ex vivo and in vivo detection of ATP and H2O2 in the kidney.
05:35
Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins
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Cited by 4 •
2016
Here we report protocols to detect endogenous and exogenous centromere-kinetochore proteins in human cells and quantify these protein levels at centromeres-kinetochores by indirect immunofluorescent staining through the use of fixation (paraformaldehyde, acetone, or methanol fixation).
12:03
Detection of Microregional Hypoxia in Mouse Cerebral Cortex by Two-photon Imaging of Endogenous NADH Fluorescence
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Cited by 11 •
2012
Here we describe a method to directly visualize microregional tissue hypoxia in the mouse cortex in vivo. It is based on concurrent two-photon imaging of nicotinamide adenine dinucleotide (NADH) and the cortical microcirculation. This method is useful for high resolution analysis of tissue oxygen supply.
FAQs
Interferon stimulation activates MX1 gene expression, creating a measurable connection between upstream antiviral signaling and MxA protein abundance. Detecting the native protein therefore provides a biochemical readout of pathway activity at the protein level, rather than relying only on an added construct. Comparing MxA amounts across conditions can reveal differences in cellular interferon responses.
The key distinction is the protein source: endogenous detection examines MxA produced naturally by the cell after pathway activation, whereas an overexpression approach introduces an external construct. This makes the endogenous strategy useful for evaluating native abundance and regulation under experimental conditions, including responses associated with interferon stimulation, infection, or treatment.
Immunoblotting identifies MxA in cell lysates and is suited to assessing protein abundance. Immunofluorescence examines fixed samples and can show where MxA is localized within cells. Selecting between these readouts depends on whether the experiment primarily asks how much native MxA is present, where it occurs, or how both properties change across conditions.
MxA abundance indicates how strongly cells produce the protein in response to pathway activation, while localization adds spatial information that abundance alone cannot provide. Measuring these features together helps investigate MxA regulation and cellular antiviral responses. Such comparisons can also distinguish experimental conditions that produce different patterns of innate immune activation.
A typical workflow begins by exposing cells to an experimental condition such as interferon stimulation, then preparing either cell lysates or fixed samples. Antibodies directed against MxA are used to identify the protein, followed by immunoblotting for lysate-based analysis or immunofluorescence for fixed-cell analysis. The resulting signal supports comparison of MxA across conditions.
This approach is useful when the goal is to compare cellular responses to infection or treatment without introducing an overexpression construct. It can show whether experimental conditions are associated with different levels of native MxA and therefore provide evidence of altered interferon pathway activity. The same strategy also supports studies of innate immune activation.
Native MxA measurements can serve as a biomarker of innate immune activation in disease-related or therapeutic studies. By examining protein abundance and, when using fixed samples, localization, researchers can evaluate how cells respond to treatment or other experimental conditions. These data help place interferon pathway activity within broader investigations of disease mechanisms and therapeutic effects.