M1 M2 Markers
M1 M2 Markers - 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.
09:38
Multiplexed Immunofluorescence Assay for Spatial Assessment of Senescence Markers in vivo
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2026
Multiplexed immunofluorescence enables sequential labeling of multiple antibody markers within a single tissue section to support spatial analysis of tissue architecture and cell populations. Here, a workflow for multiplex detection of senescence-associated, structural, and immune markers is presented, including manual and automated slide preparation, iterative imaging, and single-cell analysis using digital pathology software.
06:38
Macrophage Differentiation and Polarization into an M2-Like Phenotype using a Human Monocyte-Like THP-1 Leukemia Cell Line
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Cited by 25 •
2021
M2-like tumor-associated macrophages (TAM) are associated with tumor progression and poor prognosis in cancer. This protocol serves as a detailed guide to reproducibly differentiate and polarize THP-1 monocyte-like cells into M2-like macrophages within 14 days. This model is the basis to investigate the anti-inflammatory effects of TAM within the tumor microenvironment.
FAQs
M1 and M2 markers should be interpreted as patterns rather than a binary label. A macrophage can display features associated with inflammatory activity and resolution or repair, depending on the signals present. This continuum matters because assigning a single marker to one fixed state can oversimplify responses during infection, inflammation, or tissue healing.
Stimulus selection strongly influences the profile detected. Lipopolysaccharide and interferon-γ are associated with M1-linked inflammatory mediators, whereas interleukin-4 and interleukin-13 are associated with M2-linked features. These inputs help researchers examine how particular immune signals influence macrophage behavior and which marker set best reflects the response under study.
Individual markers provide limited information when considered alone. A panel that combines inducible nitric oxide synthase, tumor necrosis factor, and CD86 with CD206, arginase-1, and interleukin-10 gives a broader view of activation. Comparing the pattern helps distinguish mixed or intermediate responses from profiles dominated by one group of associated features.
A useful assessment begins by identifying the signals and biological context under investigation, then selecting markers that represent both inflammatory and resolution- or repair-associated features. Researchers can compare the resulting marker pattern rather than relying on one measurement. This approach keeps the analysis aligned with the research question and with the continuum of macrophage states.
These marker profiles are useful across infection, inflammation, and healing studies because they connect macrophage responses with different biological contexts. M1-associated measurements can help evaluate inflammatory activity linked with microbial or cytokine stimulation, while M2-associated measurements can help examine signals related to resolution and tissue repair. The same panel can support comparisons across conditions.
Interpretation depends on the experimental context and the combination of signals present. A profile containing CD86 or tumor necrosis factor should not automatically be treated as exclusively M1, just as CD206 or interleukin-10 should not be read as proof of a purely M2 state. Reporting several markers preserves the continuum model and reduces overinterpretation.