Neutrophil Isolation
Neutrophil Isolation - 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.
04:50
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.
10:15
Isolation and Characterization of Neutrophils with Anti-Tumor Properties
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Cited by 46 •
2015
Neutrophils play an important role not only in host defense against invading microorganisms, but are also involved in the immune surveillance of tumor cells. Here, we describe techniques related to the isolation of neutrophils with anti-tumor properties and methods for monitoring anti-tumor neutrophil function in vitro and in vivo.
04:21
Isolation of Cytotoxic Neutrophils from Tumor-Bearing Mouse Blood
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2025
In this video, we demonstrate the isolation of cytotoxic high-density neutrophils and low-density neutrophils from the blood of a tumor-bearing mouse by discontinuous sucrose gradient centrifugation.
09:43
Simplified Human Neutrophil Extracellular Traps (NETs) Isolation and Handling
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Cited by 153 •
2015
In the following protocol, we describe a very simple way to isolate Neutrophil Extracellular traps (NETs) from human whole blood using readily available reagents. We then demonstrate how the isolated NETs can be used in an in vitro adhesion assay with cancer cells.
FAQs
Density-gradient centrifugation separates blood components according to differences in cell density. After centrifugation, neutrophils become enriched in a fraction that can be collected apart from other cellular components, while the gradient helps reduce leukocyte contamination. This approach is useful when researchers need a viable cell population for downstream functional assays rather than only a general white-cell preparation.
Magnetic separation relies on antibodies that bind selected cells, allowing the labeled population to be separated with a magnetic system. Density-gradient centrifugation instead exploits physical differences in density. The choice therefore depends on whether enrichment through antibody-mediated binding or fractionation of blood components better suits the experiment and its desired level of cellular selectivity.
Red blood cell removal reduces the nonleukocyte material carried into the preparation, helping enrich the neutrophil population and minimize interference from whole blood components. This cleanup step is especially relevant when isolated cells will undergo functional testing, because excessive contamination can complicate interpretation of measurements related to phagocytosis, oxidative burst, degranulation, or antimicrobial activity.
The preparation must preserve both neutrophil viability and normal cellular function. Isolation choices should therefore be evaluated by how well they enrich neutrophils while limiting contamination and maintaining the properties required for testing. This matters because damaged or poorly preserved cells may give misleading results in studies of chemotaxis, phagocytosis, degranulation, oxidative burst, or antimicrobial activity.
A typical workflow starts with whole blood, removes red blood cells, and then applies either density-gradient centrifugation or magnetic separation to enrich neutrophils. The recovered cells are subsequently used in a selected assay or analysis. This sequence links sample processing with experimental objectives, since the final preparation must be sufficiently enriched and viable for the intended measurement.
Isolated neutrophils can be examined for several innate immune functions, including phagocytosis, chemotaxis, degranulation, oxidative burst, and antimicrobial activity. These assays reveal how the cells respond to relevant experimental conditions and provide functional outcomes rather than cell numbers alone. The resulting measurements can help characterize changes in neutrophil-mediated defense and inflammation.
The technique supports investigations of innate immune responses in inflammation, infection, autoimmune disease, and immunotoxicity. It can also contribute to studies evaluating potential therapeutic strategies. By providing cells for controlled functional assays, the preparation helps researchers examine neutrophil behavior in disease-related or treatment-related contexts while connecting cellular activity to broader biological and biomedical questions.