Human Chimerism Assessment
Human Chimerism Assessment - Related Videos
10:33
Isolation and Characterization Of Chimeric Human Fc-expressing Proteins Using Protein A Membrane Adsorbers And A Streamlined Workflow
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Cited by 3 •
2014
Compared with traditional affinity chromatography using protein A agarose bead-packed columns, protein A membrane adsorbers can significantly speed laboratory-scale isolation of antibodies and other Fc fragment-expressing proteins. Appropriate analysis and quantification methods can further accelerate protein processing, allowing isolation/characterization to be completed in one workday, instead of 20+ work hours.
04:38
An Ex Vivo Technique to Manufacture Chimeric Antigen Receptor T Cells
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2025
This video demonstrates a technique to manufacture chimeric antigen receptor (CAR) T cells ex vivo. Human T cells are incubated with magnetic beads coated with anti-CD3 and anti-CD28 antibodies, along with a medium supplemented with interleukin-2 (IL-2), leading to T cell activation and proliferation. Transgenic lentiviral vectors are introduced, allowing the transgenic RNA to integrate into the host genome and express the transgene. This results in the transduced T cells expressing chimeric...
21:01
Generating Chimeric Zebrafish Embryos by Transplantation
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Cited by 61 •
2009
A step-by-step guide to generating targeted chimeric zebrafish embryos by transplantation at the blastula or gastrula stage.
10:29
Generation of Human Chimeric Antigen Receptor Regulatory T Cells
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Cited by 5 •
2025
This protocol provides a streamlined workflow to generate and test human chimeric antigen receptor regulatory T cells (CAR Tregs).
09:30
Non-invasive Assessment of Changes in Corticomotoneuronal Transmission in Humans
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Cited by 6 •
2017
The aim of the present study was to assess changes in transmission at the corticomotoneuronal synapses in humans after repetitive transcranial magnetic stimulation. For this purpose, an electrophysiological method is introduced that allows assessment of pathway specific corticospinal transmission, i.e. differentiation of fast, direct corticospinal pathways from polysynaptic connections.
FAQs
The analysis selects genetic differences that identify donor-derived and recipient-derived cells, commonly through short tandem repeats or single-nucleotide polymorphisms. Measuring these markers in a sample allows the assay to estimate the relative contribution of each population rather than simply detecting whether both are present. This distinction supports evaluation of cell origin and persistence over time.
The measured proportion indicates whether one cellular population predominates or whether donor and recipient populations remain mixed. Changes in that balance can provide information about engraftment, immune reconstitution, or persistence of recipient cells. In immunology research, following these proportions helps relate cellular composition to immune status without relying on a single time point.
Quantitative PCR, digital PCR, and sequencing provide alternative measurement approaches for detecting informative genetic markers and estimating population proportions. Their shared purpose is to convert marker signals into an assessment of donor and recipient representation in blood or tissue. The selected platform therefore supports sensitive measurement of cellular composition and comparison of results across longitudinal samples.
Repeated testing shows whether genetically distinct populations are stable, increasing, or declining after treatment or during infection. This time-based view can clarify persistence and changing cellular contributions that a single sample might miss. Longitudinal results are particularly relevant when investigators are evaluating engraftment, immune reconstitution, or shifts in immune status.
Human chimerism assessment can examine blood or tissue, depending on the biological question. Researchers measure donor- and recipient-informative markers in the selected specimen and use quantitative PCR, digital PCR, or sequencing to estimate the proportion of each population. Comparing these measurements across samples provides a basis for tracking cellular changes during follow-up.
After hematopoietic stem cell transplantation, the method helps track engraftment and immune reconstitution by measuring donor and recipient cellular contributions. Detection of mixed chimerism can also help identify patterns associated with graft failure or graft-versus-host disease. These results give investigators a genetic measure that complements broader studies of post-transplant immune status.
In immunology and infection research, the measurements can follow how cellular populations change during an immune response or infection. They also support studies of microchimerism, in which small genetically distinct populations are examined for persistence. By linking population proportions with treatment or infection timelines, investigators can study changes in cell origin and immune status.