Low Density Neutrophils
Low Density Neutrophils - Related Videos
04:59
Peritoneal Low-density Neutrophil Isolation: A Technique to Obtain Low-density Neutrophils from Peritoneal Lavage Fluid Using Magnetic Activated Cell Sorting
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2023
In this video, we describe the procedure for isolating low-density neutrophils, or LDNs, from the peritoneal lavage fluid of a postoperative human patient. The LDNs thus obtained can be used in further downstream experiments to understand their role in tumor growth and progression.
08:14
Rapid Magnetic-microbead Method for Efficient Purification of Low-density Neutrophils
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Cited by 1 •
2025
Low-density neutrophils (LDN) increase significantly in several diseases. LDN are usually isolated through cell sorting. We present a practical method to obtain pure and viable LDN. After density-gradient centrifugation of peripheral blood, cells are incubated with magnetic microbeads, and then LDN are separated through magnetic columns.
07:26
Stimulation of Vascular Endothelial Cells Using Neutrophil Extracellular Traps in the Presence of Low-Density Lipoprotein
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2025
A series of methods is described, including the isolation of low-density lipoprotein (LDL) from human plasma, differentiation of HL-60 cells into neutrophil-like cells, preparation of neutrophil extracellular traps (NETs) in the presence of LDL, and stimulation of human aortic endothelial cells with a mixture of NETs and LDL.
07:17
The Isolation and Characterization of Low- and Normal- Density Neutrophils from Whole Blood
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Cited by 4 •
2025
Here, we provide a reliable approach for isolating low- and normal-density neutrophils from whole blood using magnetic isolation (negative selection) and discontinuous density gradient medium. It ensures untouched isolation of high-purity cells (≥93%), facilitating accurate downstream analysis of neutrophil subpopulations, crucial for understanding their roles in health and disease.
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.
FAQs
Their reduced density can reflect underlying changes in maturation, activation, and granule composition rather than a single uniform cell state. Consequently, the low-density fraction may include immature cells alongside activated cells with different functional properties. Recognizing these sources of variation helps cancer researchers avoid treating every cell in the fraction as biologically equivalent.
Many cells in this population show immunosuppressive activity through mechanisms involving reactive oxygen species and arginase-1, together with direct or indirect interactions with T cells. These mechanisms can alter the immune environment surrounding a tumor by limiting effective T-cell responses. Their presence therefore provides functional context beyond simply measuring neutrophil abundance.
Separating this fraction from conventional high-density neutrophils can reveal tumor-associated states that may be missed when all neutrophils are analyzed together. The distinction is important because low-density cells can contain immature or activated subsets with potentially different effects on immunity. Comparisons between fractions may therefore clarify which neutrophil states are linked to tumor-promoting activity.
Researchers use density-gradient centrifugation to separate peripheral blood cells according to density, then examine the fraction that separates with peripheral blood mononuclear cells rather than with conventional high-density neutrophils. The high-density fraction provides a useful comparison during interpretation. Because the low-density compartment is heterogeneous, its findings should be evaluated as a mixed population rather than a single defined subtype.
Analysis of this population can help characterize the tumor-associated immune environment and examine relationships with disease progression. Researchers can also assess whether changes in the fraction correspond with treatment response. These applications make the population useful for studying how altered neutrophil states relate to cancer behavior and to variation in immune conditions.
Heterogeneity is the central limitation. The fraction may contain cells at different maturation and activation states, with variation in granule composition and immunosuppressive behavior. A measured change may therefore reflect shifts in cellular composition rather than one consistent biological program. Careful interpretation is essential before using the population as a biomarker or selecting it as a therapeutic target.