Antigen Stimulation
Antigen Stimulation - Related Videos
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.
08:32
Extraction of Tissue Antigens for Functional Assays
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2012
A simple protocol for preparing extracts of human tissue to be used as a source of antigens in functional T-cell assays is described. This method allows T-cell responses to tissue-derived antigens to be measured in vitro.
05:04
Viral Antigen Microarray Assay to Detect Antibody Isotypes in Serum Against Viral Antigen
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2025
In this video, we demonstrate the process for detecting antibody isotypes in multiple human serum samples using a microarray slide printed with antigenic subtypes of influenza virus strains.
04:08
Preparing an Antigen-Adjuvant Emulsion to Induce Autoimmune Encephalomyelitis
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2025
This video demonstrates an efficient homogenization technique to generate an antigen-adjuvant emulsion to induce experimental autoimmune encephalomyelitis (EAE) in a murine model. The emulsion contains an autoantigen — myelin oligodendrocyte glycoprotein (MOG) — in the water phase, surrounded by a continuous oil phase comprising an inactivated pathogenic bacteria. The emulsion ensures a sustained release of antigens for a prolonged immune response.
FAQs
Antigen specificity arises when T-cell receptors recognize particular antigen-derived peptides displayed on major histocompatibility complex molecules. This molecular matching allows immune cells to distinguish the relevant foreign molecule or altered self component from other material. In experimental systems, the selected antigen therefore determines which lymphocyte populations respond and enables analysis of pathogen-specific or otherwise targeted immunity.
Recognition through the T-cell receptor alone does not describe the full activation environment. Costimulatory signals and cytokines provide additional information that promotes lymphocyte activation, proliferation, and differentiation. Their presence helps shape the resulting immune response, so measuring responses under controlled stimulation can reveal how immune cells function and how signaling conditions influence cytokine production.
The process can reveal whether lymphocytes become activated, expand through proliferation, or acquire differentiated functions. Cytokine production provides another measurable indication of the response and can help characterize immune-cell behavior. Together, these outcomes show how cells react to a selected antigen and support comparisons of immune function, pathogen-specific activity, or responses associated with altered self components.
A controlled experimental system exposes immune cells to a selected antigen or antigen-derived material and allows antigen-presenting cells to display relevant peptides on major histocompatibility complex molecules. Investigators then examine resulting lymphocyte activation, proliferation, differentiation, or cytokine production. This workflow links the initiating antigen to measurable cellular outcomes without treating all immune responses as equivalent.
Researchers use controlled antigen stimulation to characterize pathogen-specific responses, examine immune memory, and assess vaccine responses. Comparing cellular outcomes after exposure to a relevant antigen can indicate whether immune cells recognize and respond to that target. The approach therefore connects molecular antigen recognition with broader questions about infection mechanisms and the persistence or quality of immunity.
Antigen stimulation provides an experimental basis for evaluating how immune cells respond to defined targets. Measurements of activation, cytokine production, proliferation, and differentiation can inform studies of immunotherapies and contribute to diagnostic approaches. In infection research, these readouts also help distinguish functional immune responses from limited or absent responses to pathogen-associated antigens.