Peripheral Blood Cd4
Peripheral Blood Cd4 - Related Videos
06:39
Selective Isolation of CD4+ Vδ1+ γδ T Cells from Human Peripheral Blood Mononuclear Cells
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2025
This video demonstrates a protocol for the magnetic labeling-based isolation of a low-concentration population of CD4+Vδ1+γδ T cells from human peripheral blood mononuclear cells (PBMCs). Using a combination of FITC-conjugated anti-Vδ1 antibodies, magnetic anti-FITC microbeads, and anti-CD4 antibody-coated superparamagnetic beads, the CD4+Vδ1+ T-cells can be successfully purified from the PBMC population.
06:03
Isolation and Characterization of Microvesicles from Peripheral Blood
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Cited by 74 •
2017
Extracellular vesicles present in blood have been suggested as novel biomarkers for various diseases. Here, we present a protocol for the isolation of large plasma membrane-derived microvesicles from peripheral blood samples and their subsequent analysis by conventional flow cytometry and Western Blotting.
04:57
A Flow Cytometry Assay to Identify Immune Cell Subsets in Peripheral Blood Mononuclear Cells
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2025
This video demonstrates a flow cytometry-based technique using two fluorochromes to identify CD4+ and CD8+ T cells, γδ T cells, B cells, natural killer (NK) cells, and monocytes in human peripheral blood mononuclear cells (PBMCs). Upon incubating the cells with fluorochrome-conjugated antibodies against the surface markers, the cell subsets are identified using an optimal flow cytometric gating strategy.
11:00
Generation and Culture of Blood Outgrowth Endothelial Cells from Human Peripheral Blood
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Cited by 74 •
2015
This protocol allows for the reliable generation and characterization of blood outgrowth endothelial cells (BOECs) from a small volume of adult peripheral blood. BOECs can be used as a surrogate for endothelial cells from patients with vascular disorders and as a substrate for the generation of induced pluripotent stem cells.
08:20
In Vitro Differentiation of Human CD4+FOXP3+ Induced Regulatory T Cells (iTregs) from Naïve CD4+ T Cells Using a TGF-β-containing Protocol
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Cited by 24 •
2016
This protocol describes the reproducible generation and phenotyping of human induced regulatory T cells (iTregs) from naïve CD4+ T cells in vitro. Different protocols for FOXP3 induction allow for the study of specific iTreg phenotypes obtained with respective protocols.
FAQs
Recognition occurs when antigen-derived peptides are presented by major histocompatibility complex class II molecules on antigen-presenting cells. This interaction initiates signaling in the CD4-positive T lymphocyte, which then produces cytokines and sends activating signals to other leukocytes. The resulting coordination helps organize adaptive immune responses rather than relying on the CD4-positive cell alone.
Cytokine production and cell signaling reflect functional activities that allow helper T cells to direct other leukocytes. Consequently, measuring only the number of circulating cells may not capture differences in their phenotype or immune role. Including phenotype in peripheral blood CD4 analysis can therefore provide additional information about immune status and possible immune dysfunction.
Abundance describes how many CD4-positive T lymphocytes are present in a blood sample, whereas phenotype describes measurable characteristics of those cells. These perspectives answer different questions: abundance supports evaluation of immune-cell levels, while phenotype can add information about the state or profile of the population. Considering both can strengthen studies of immune suppression and infection.
Flow cytometry is commonly used to measure CD4 cell abundance and phenotype in peripheral blood. The approach allows investigators to characterize the relevant immune-cell population and examine features beyond simple presence or absence. Its measurements can support comparisons of immune status across research settings, including studies focused on host defense, immune dysfunction, and infection.
Researchers analyze these cells when they need information about host immune status during infection or suspected immune dysfunction. The results can help describe changes in a key adaptive immune population and support investigation of how immune responses are coordinated. This makes peripheral blood CD4 analysis relevant to infection-focused studies without limiting its use to one disease.
Peripheral blood CD4 analysis is especially important in HIV-related work because it provides information about immune suppression and supports disease monitoring. Examining the circulating population can help researchers and clinicians follow immune status in the context of infection. The analysis therefore connects cellular immunology with evaluation of how disease affects host defense.