Macrophage Signaling
Macrophage Signaling - Related Videos
04:08
An Assay for TLR-Dependent NF-кB/AP-1 Transcription Factor Signaling in Macrophages
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2025
This video demonstrates an assay to examine the toll-like receptor(TLR)-dependent activity of the transcription factors nuclear factor-kappa-B (NF-κB) and activator protein-1 (AP-1) in macrophages. The TLRs trigger a pro-inflammatory signaling cascade upon recognizing damage-associated molecular patterns (DAMPs), activating NF-κB and AP-1. The engineered reporter macrophages produce secreted embryonic alkaline phosphatase (SEAP) enzyme upon NF-κB and AP-1 activation, which is detected via a...
10:07
Investigation of Macrophage Polarization Using Bone Marrow Derived Macrophages
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Cited by 326 •
2013
The article describes a readily easy adaptive in vitro model to investigate macrophage polarization. In the presence of GM-CSF/M-CSF, hematopoietic stem/progenitor cells from the bone marrow are directed into monocytic differentiation, followed by M1 or M2 stimulation. The activation status can be tracked by changes in cell surface antigens, gene expression and cell signaling pathways.
05:44
Developing a Neuron and Macrophage Coculture In Vitro
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2025
This video shows the co-culturing of murine dorsal root ganglion neurons and macrophages. Neurons are seeded on a coated plate, while macrophages are collected from an euthanized mouse, treated, and added to the culture insert. Treatment with db-cAMP activates neurons and prompts macrophages to adopt a pro-regenerative phenotype to support neuronal outgrowth.
06:46
Culture of Macrophage Colony-stimulating Factor Differentiated Human Monocyte-derived Macrophages
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Cited by 58 •
2016
A protocol is presented for cell culture of macrophage colony-stimulating factor (M-CSF) differentiated human monocyte-derived macrophages. The protocol utilizes cryopreservation of monocytes coupled with their bulk differentiation into macrophages. Then harvested macrophages can then be seeded into culture wells at required cell densities for carrying out experiments.
07:06
Bone Marrow-derived Macrophage Production
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Cited by 205 •
2013
Macrophages have long been recognized as a critical component of the innate and adaptive immune responses. The recent explosion of knowledge pertaining to evolutionary, genetic, and biochemical aspects of the interaction between macrophages and microbes has renewed scientific attention to macrophages. This article describes a method to differentiate macrophages from mouse bone marrow.
FAQs
Pattern-recognition receptors, cytokine receptors, and other surface sensors provide distinct entry points for environmental information. Their activation engages intracellular signaling pathways, including NF-κB and JAK-STAT, which change gene transcription and downstream cell behavior. Considering these receptor classes separately helps explain how macrophages tailor cytokine release, phagocytosis, and polarization to the signals they encounter.
NF-κB and JAK-STAT function as intracellular routes that translate receptor activation into changes in gene transcription. Those transcriptional changes influence macrophage outputs such as cytokine production, phagocytosis, and polarization. Examining these pathways connects an external cue to a cellular response and helps clarify how altered signaling can affect inflammation, infection control, or tissue repair.
Polarization links incoming environmental information to a macrophage state suited to a particular immune or tissue context. Because signaling influences polarization alongside cytokine release and phagocytosis, changes in the signaling network can shift the balance between inflammatory activity and tissue-supportive responses. This relationship is important for understanding both normal repair and persistent inflammatory conditions.
When macrophage signaling becomes improperly controlled, the resulting changes in gene transcription and cellular behavior can disturb immune and tissue responses. The overview links this dysregulation with chronic inflammatory disease, cancer, and metabolic disorders. Studying the affected signaling routes may therefore reveal how abnormal macrophage activity contributes to disease and indicate possible therapeutic targets.
A practical conceptual workflow follows the sequence from environmental cue, to receptor or surface sensor, to intracellular pathway, to altered gene transcription, and finally to macrophage behavior. Investigators can then relate pathway activity to cytokine release, phagocytosis, or polarization. This structure organizes experiments and interpretations around both molecular mechanisms and observable immune or tissue outcomes.
Macrophage signaling is relevant whenever research examines innate immune detection, infection responses, inflammation, or tissue repair. It also provides context for studying cancer and metabolic disorders in which dysregulated macrophage activity may play a role. Because the network connects environmental sensing with functional responses, it can help identify mechanisms and candidate points for therapeutic intervention.