M1 M2 Marker Expression
M1 M2 Marker Expression - Related Videos
08:37
Polarization and Characterization of M1 and M2 Human Monocyte-Derived Macrophages on Implant Surfaces
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Cited by 2 •
2024
Here, we present a detailed protocol for assessing the immunomodulatory potential of implant surfaces in vitro, aiming to improve the reliability and reproducibility of current protocols and promoting further research. Secretory cytokine profiles, mRNA expression, and cell surface markers were monitored using blood monocyte-derived macrophages to investigate macrophage polarization cultivated on titanium.
07:45
Metabolic Characterization of Polarized M1 and M2 Bone Marrow-derived Macrophages Using Real-time Extracellular Flux Analysis
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Cited by 275 •
2015
Metabolic reprogramming is a characteristic and prerequisite for M1 and M2 macrophage polarization. This manuscript describes an assay for the measurement of fundamental parameters of glycolysis and mitochondrial function in mouse bone marrow-derived macrophages. This tool can be applied to investigate how particular factors affect the macrophage’s metabolism and phenotype.
10:43
Polarization of M1 and M2 Human Monocyte-Derived Cells and Analysis with Flow Cytometry upon Mycobacterium tuberculosis Infection
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Cited by 58 •
2020
This protocol provides a method to study Mycobacterium tuberculosis infection in human M1- or M2-polarized macrophages based on differentiation of peripheral-blood-monocytes to macrophage-like cells that are infected with the GFP-labeled virulent strain H37Rv, and analyzed with flow cytometry using a 10-color panel including expression of selected M1/M2 markers.
06:56
Near Infrared (NIr) Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium
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Cited by 4 •
2015
Mitochondrial dysfunction is a hallmark of cellular senescence. This paper uses non-invasive near-infrared (NIr) treatment to improve mitochondrial function in the aging mouse vestibular sensory epithelium.
03:19
Transduction to Label PDX Tumor Cells: Introducing Lentivirus Expressing Fluorescent Marker into the Tumor Cell In Vitro
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2023
The following video describes a technique of transduction to label (patient-derived xenografts) PDX tumor cells, which is used for introducing lentivirus expressing green-fluorescent protein and luciferase reporters into the tumor cell in vitro.
FAQs
Signal choice shapes the marker profile that is observed. Lipopolysaccharide and interferon-γ are used as microbial or inflammatory inputs that promote an M1-like pattern, while interleukin-4 and interleukin-13 favor an M2-like pattern. Comparing these conditions helps researchers relate specific signals to macrophage activation responses rather than treating all activation states as equivalent.
An M1-like or M2-like label should not be assigned from a single molecule alone. A broader panel, such as inducible nitric oxide synthase with CD80 and CD86, or arginase-1 with CD206, provides a more informative pattern. Even then, interpretation should include the experimental setting and macrophage function because expression profiles represent a continuum.
Macrophages can display marker combinations that do not fit a purely M1-like or M2-like category. Consequently, a change in one marker may not represent a complete shift in activation state. Researchers should interpret the full pattern in relation to the applied stimulus and measured function, especially when comparing infection, inflammation, or tissue-repair responses.
Flow cytometry, immunostaining, and gene-expression analysis can be used to examine macrophage markers. These approaches help determine whether a stimulus is associated with an M1-like or M2-like expression pattern. Applying the same measurement strategy across experimental conditions supports comparison of responses, while marker-panel selection keeps interpretation tied to the biological question.
Researchers can expose macrophages to defined stimulus conditions, including lipopolysaccharide with interferon-γ or interleukin-4 or interleukin-13, then measure marker patterns using flow cytometry, immunostaining, or gene-expression analysis. Comparing inducible nitric oxide synthase, CD80, CD86, arginase-1, and CD206 across conditions helps connect the input to the observed activation profile.
Marker profiles help characterize macrophage responses in infection, inflammation, and tissue repair research. In infection-focused experiments, researchers can examine how microbial or inflammatory signals relate to M1-like markers; in tissue-repair studies, they can assess patterns associated with interleukin-4 or interleukin-13. The resulting data should be interpreted with functional and experimental context.