Mycobacterial Antigen Stimulation
Mycobacterial Antigen Stimulation - Related Videos
03:52
Subcutaneous Injection of Bacterial Antigen to Induce Systemic Inflammation in a Murine Model
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2025
This video demonstrates the induction of systemic inflammation in an anesthetized mouse. The injection of mycobacterial antigen-adjuvant depots triggers cytokine release and localized inflammation. Lymphatic vessels open, enabling immune cell entry into lymph nodes and activation of T cells, which release pro-inflammatory cytokines, leading to widespread inflammation.
09:18
Mycobacterial DNA Extraction using Bead Beating in Custom Buffer Followed by NGS Workflow
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2025
This protocol shows bead-beating combined with DNA capture bead purification provides a fast and consistent method for extracting DNA from Mycobacterium tuberculosis samples, making it an effective choice for next-generation sequencing applications.
06:57
Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
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Cited by 9 •
2016
In this antigen-driven colitis model, OT-II CD4+ T cells expressing a red fluorescent protein were adoptively transferred into RAG-/- mice that express a green fluorescent protein in mononuclear phagocytes (MPs). The hosts were challenged with Escherichia coli (E.coli) expressing the ovalbumin protein (OVA) fused to a cyan fluorescent protein (CFP).
11:02
Combining Transcranial Magnetic Stimulation and fMRI to Examine the Default Mode Network
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Cited by 17 •
2010
In this article, we examine the methodology and considerations relevant to the combination of TMS and fMRI to examine the effects of brain stimulation on the default network.
04:00
A Murine Model of Primed Mycobacterial Uveitis to Study Post-Infectious Uveitis
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2025
This video demonstrates a method to generate a mouse model of primed mycobacterial uveitis (PMU) for studying post-infectious uveitis. Upon induction of PMU by intravitreal injection of heat-killed Mycobacterium tuberculosis in a mouse previously immunized with the same immunogen, the progression of chronic inflammation in the eye is analyzed using imaging and histopathological...
FAQs
How an antigen is presented shapes which immune signals are detected. Protein, peptide, and whole-cell preparations can engage antigen receptors, while whole-cell material may also provide broader stimulation through innate immune sensors. Selecting among these formats helps investigators distinguish responses to defined antigenic regions from responses produced by more complex mycobacterial material.
Different readouts capture different stages of activation. Cytokine secretion reflects soluble communication from stimulated cells, whereas altered gene expression indicates changes in cellular programs. T-cell activation and proliferation provide complementary evidence that lymphocytes have responded. Using several readouts can give a more complete picture of immune function than relying on a single measurement.
Comparing responses to different mycobacterial species or vaccine candidates helps identify the breadth and specificity of cellular immunity. A stronger or differently patterned cytokine, activation, proliferation, or gene-expression response may indicate that the tested material engages immune cells in distinct ways. These comparisons support studies of pathogen-specific recognition and candidate performance.
In an in vitro experiment, immune cells are exposed to a selected mycobacterial protein, peptide, or whole-cell preparation. The stimulated cells are then evaluated for cytokine secretion, T-cell activation, proliferation, or gene-expression changes. This sequence links a defined antigenic challenge to measurable cellular outcomes, allowing investigators to characterize responses and compare conditions.
The key choices are the immune-cell population, the form of mycobacterial antigen, and the response readout. Cell type influences which immune processes can be observed, antigen format affects receptor and innate-sensor engagement, and the selected measurement determines whether the study emphasizes cytokines, transcriptional changes, lymphocyte activation, or proliferation. Together, these choices define interpretation.
It provides a controlled way to examine cellular immune responses relevant to tuberculosis and other mycobacterial infections. Investigators can use responses to selected antigens to study pathogen-specific immunity and mechanisms underlying infection. Cytokine, activation, proliferation, and gene-expression data can help compare immune behavior across experimental conditions without relying on a single measurement.
By revealing whether immune cells respond to particular mycobacterial materials, this approach supplies evidence for evaluating diagnostic, therapeutic, and vaccine strategies. Researchers can compare candidate antigens or vaccine preparations using cellular readouts, then assess whether responses are detectable, pathogen-specific, or different in magnitude or pattern. It connects immune profiling with strategy development.