Neutrophils
Neutrophils - Related Videos
07:12
Neutrophil Isolation Protocol
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Cited by 173 •
2008
Neutrophils are among the first cells to arrive on the site of inflammatory immune response, and their functions and mechanisms have been studied extensively in vitro. We demonstrate a standard density gradient separation method to isolate human neutrophils from whole blood using commercially available separation media.
04:32
Induction and Visualization of Neutrophil Extracellular Traps in Pre-Labeled Neutrophils
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2025
This video demonstrates the induction and visualization of neutrophil extracellular traps or NETs in pre-labeled neutrophils using patient serum containing anti-neutrophil cytoplasmic antibodies. Furthermore, using an impermeable DNA dye and fluorescence microscopy enables the visualization of NETs.
04:50
Isolation and Digestion of Neutrophil Proteins
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2026
Source:Tia Rizakos1, Jennifer Geddes-McAlister11Molecular and Cellular Biology Department, University of Guelph.This video demonstrates the protein isolation from neutrophils, which is further processed and digested into smaller peptides. These peptides can be used for future analysis.
14:17
Neutrophil Extracellular Traps: How to Generate and Visualize Them
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Cited by 297 •
2010
Neutrophil Extracellular Traps (NETs) are an important innate immune mechanism to fight pathogenic bacteria, fungi and parasites. Here we describe methods to isolate neutrophil granulocytes from human blood and to activate them to form NETs. We present preparation techniques to visualize NETs in light and electron microscopy.
04:21
Generating Anti-Angiogenic Tumor-Associated Neutrophils
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2025
This video demonstrates an assay to generate anti-angiogenic tumor-associated neutrophils (TANs). Upon taking a murine melanoma tumor containing pro-angiogenic TANs, the single cells are isolated using fluorescence-activated cell sorting (FACS) and treated with an inhibitor of nicotinamide phosphoribosyl transferase (NAMPT) to reduce the capacity to stimulate angiogenesis.
FAQs
Chemical signals create directional information that neutrophils follow as they move through tissues. This process, called chemotaxis, helps concentrate their activity where invading microbes or tissue injury generate the strongest need for defense. Studying these signals and migration patterns helps explain how neutrophils reach affected sites rapidly while limiting unnecessary activity elsewhere.
Neutrophils use several complementary mechanisms rather than relying on a single antimicrobial action. Phagocytosis captures threats inside the cell, antimicrobial granules deliver destructive contents, reactive oxygen species contribute chemically active defenses, and neutrophil extracellular traps extend antimicrobial material into surrounding tissue. Examining these mechanisms together clarifies how neutrophils eliminate threats and influence local inflammation.
Neutrophil responses support immediate defense, but excessive or prolonged activation can extend inflammation beyond the original threat. Antimicrobial granules, reactive oxygen species, and extracellular traps may then affect nearby healthy tissue rather than only invading microbes. This balance is important when studying inflammatory and autoimmune disease, where regulating neutrophil activity may reduce collateral injury.
Research commonly examines neutrophil development, trafficking, and function as connected aspects of their biology. Development addresses how these cells arise, trafficking follows their movement from blood into tissues, and functional studies assess how they respond after activation. Together, these areas reveal how neutrophils participate in infection defense, tissue injury, inflammation, and later immune responses.
In infection biology, neutrophils are studied for their rapid responses to invading microbes and their ability to deploy multiple antimicrobial mechanisms. In inflammation research, investigators examine how activated cells promote local inflammatory reactions and help shape subsequent immune responses. These findings connect cellular behavior with outcomes in infectious disease and inflammatory conditions.
Tissue injury recruits neutrophil activity, making these cells relevant to wound-healing research as well as infection studies. Their responses can support defense at damaged sites, yet excessive activity may harm healthy tissue. Consequently, neutrophil biology informs efforts to develop therapies that regulate immune responses in inflammation, autoimmune disease, and injury-related settings.