Blood-derived Neutrophils
Blood-derived Neutrophils - Related Videos
02:57
Isolation of Lipids from Human Blood-Derived Neutrophils by Biphasic Separation
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2025
This video demonstrates lipid isolation from human neutrophils by a biphasic solvent system using methanol and chloroform.
10:13
Microfluidic Platform for Measuring Neutrophil Chemotaxis from Unprocessed Whole Blood
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Cited by 20 •
2014
This protocol details an assay designed to measure human neutrophil chemotaxis from one droplet of whole blood with robust reproducibility. This approach circumvents the need for neutrophil separation and requires only a few minutes of assay preparation time. The microfluidic chip enables the repeated measure of neutrophil chemotaxis over time in infants or small mammals, where sample volume is limited.
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.
07:21
An All-on-chip Method for Rapid Neutrophil Chemotaxis Analysis Directly from a Drop of Blood
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Cited by 11 •
2017
This article provides the detailed method of performing a rapid neutrophil chemotaxis assay by integrating the on-chip neutrophil isolation from whole blood and the chemotaxis test on a single microfluidic chip.
03:54
A Microfluidic Chip-Based Method for Rapid Neutrophil Chemotaxis Analysis Using Whole Blood
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2025
This video demonstrates neutrophil chemotaxis assay using an all-on-chip method. The method allows direct isolation of neutrophils from the whole blood by immunomagnetic negative selection followed by chemotaxis assay on a microfluidic chip.
FAQs
Recognition of microbial signals initiates a coordinated response: cells migrate toward injury, engulf targets by phagocytosis, and deploy granule enzymes and reactive oxygen species. This sequence links detection with containment rather than relying on one antimicrobial mechanism. Measuring these linked responses can help investigators distinguish defects in pathogen recognition, movement, uptake, or downstream microbial restriction.
Directed migration places neutrophils where injury or microbial activity occurs, connecting signal detection with local host defense. In experimental systems, examining this behavior can reveal whether cells respond appropriately to inflammatory or microbial cues before testing phagocytosis or antimicrobial activity. This makes migration a useful readout for early immune dysfunction and inflammatory response patterns.
Phagocytosis is only one part of the antimicrobial response. Neutrophils can also release granule enzymes and reactive oxygen species, while neutrophil extracellular traps may contribute under some conditions. Considering these mechanisms separately helps researchers determine whether impaired microbial control results from defective uptake, altered intracellular killing, weakened extracellular activity, or changes in trap-associated responses.
The workflow starts with peripheral blood as the cell source and isolation of the neutrophil population. Investigators can then examine responses to microbial signals, infection-related conditions, or inflammatory stimuli, focusing on migration, phagocytosis, antimicrobial activity, and signaling. The selected readouts should match the research question, whether it concerns pathogen restriction, inflammation, or cell interactions.
These experiments can show how neutrophils recognize microbial signals, move toward injury, engulf pathogens, and restrict microbial growth through several antimicrobial outputs. They can also reveal inflammatory signaling and interactions with other immune cells. Together, these measurements provide a functional profile of early host defense rather than a result limited to pathogen uptake alone.
Because they are primary cells obtained from peripheral blood, these preparations provide a physiologically relevant model for examining early immune responses. Researchers can use them to investigate how neutrophil dysfunction may contribute to susceptibility to infection and to assess how treatments influence antimicrobial activity, inflammatory signaling, or communication with other immune cells.