Tissue-resident Macrophages
Tissue-resident Macrophages - Related Videos
07:46
Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
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Cited by 15 •
2017
This protocol allows a researcher to isolate and characterize tissue-resident macrophages in various hallmark inflamed tissues extracted from diet-induced models of metabolic disorders.
06:33
Lentiviral Vector Preparation for Efficient Gene and MicroRNA Modulation of Peritoneal Cavity Tissue-Resident Macrophages In Vivo in Mice
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Cited by 3 •
2024
We demonstrate a step-by-step protocol for the investigation of gene function in peritoneal tissue-resident macrophages in vivo, using lentiviral vectors.
08:43
Isolation and Culture of Resident Cardiac Macrophages from the Murine Sinoatrial and Atrioventricular Node
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Cited by 4 •
2021
The protocol presented here provides a step-by-step approach for the isolation of cardiac resident macrophages from the sinoatrial node (SAN) and atrioventricular node (AVN) region of mouse hearts.
04:49
Characterization of Macrophage Extracellular Traps in Mouse Lung Tissue Samples
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2025
In this video, we describe a protocol for the immunostaining and confocal microscopy-based visualization of macrophage extracellular traps (METs) in murine lung tissue. Tissue-resident macrophages are characterized by the expression of the macrophage-specific F4/80 surface glycoprotein marker, while METs are visualized by labeling the MET markers matrix metalloproteinase 9, citrullinated histone H3, and extracellular chromatin.
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
Their origins can differ between tissues: many tissue-resident macrophages arise before birth and maintain themselves locally, whereas others receive contributions from circulating monocytes. This distinction helps explain why macrophage populations may respond differently during infection, injury, or inflammation. It also provides a framework for studying whether a tissue response reflects long-term resident cells, newly recruited cells, or both.
Macrophage functions are tuned by signals from nearby epithelial, stromal, and nervous tissues. These local inputs create organ-specific programs rather than a single universal macrophage response. Consequently, cells in the lung, liver, brain, and intestine can develop different roles while retaining core immune capabilities. Studying these signals reveals how tissue environments connect structural maintenance with immune defense.
Pattern-recognition receptors identify molecular features associated with microbes and initiate a coordinated response. The cells can then engulf targets through phagocytosis and release cytokines and chemokines, which help organize local inflammation and recruit or activate other immune cells. This sequence links microbial sensing to both immediate containment and broader communication within infected or injured tissue.
Organ-specific behavior reflects adaptation to distinct local environments and physiological demands. Signals from surrounding epithelial, stromal, and nervous tissues help determine how macrophages support homeostasis and respond to threats. Comparing macrophages across the lung, liver, brain, and intestine therefore helps investigators separate shared macrophage mechanisms from specialized functions shaped by each tissue.
They provide an early cellular interface between invading microbes and the tissue environment. Their pattern-recognition receptors can detect microbial molecules, while phagocytosis and mediator release help initiate local defense. At the same time, their tissue-adapted behavior influences how infection unfolds in different organs. This makes them important for analyzing both pathogen detection and the surrounding immune response.
These cells offer a way to examine how persistent or misdirected immune activity affects tissue homeostasis. Their cytokines, chemokines, and interactions with local tissue signals can be studied in relation to inflammatory disease and injury. Such work may clarify why inflammation develops in particular organs and identify points where macrophage activity could be adjusted without treating all tissues identically.
Research can connect macrophage behavior with two related outcomes: restoration of tissue conditions after injury and deliberate adjustment of immune activity. Because local signals shape their functions, interventions may need to account for the organ in which macrophages reside. This context supports investigation of targeted immunomodulation, with the aim of influencing host defense or inflammation in a more tissue-specific manner.