Effector Cd4 T Cells
Effector Cd4 T Cells - Related Videos
12:23
Analysis of Yersinia enterocolitica Effector Translocation into Host Cells Using Beta-lactamase Effector Fusions
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Cited by 5 •
2015
Effector translocation into host cells via a type III secretion system is a common virulence strategy among gram-negative bacteria. A beta-lactamase effector fusion based assay for quantitative analysis of translocation was applied. In Yersinia infected cells, conversion of a FRET reporter by the beta-lactamase is monitored using laser scanning microscopy.
11:28
Imaging CD4 T Cell Interstitial Migration in the Inflamed Dermis
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Cited by 11 •
2016
The mechanisms that govern the interstitial motility of CD4 effector T cells at sites of inflammation are relatively unknown. We present a non-invasive approach to visualize and manipulate in vitro-primed CD4 T cells in the inflamed ear dermis, allowing for study of the dynamic behavior of these cells in situ.
08:39
Electroporation of Functional Bacterial Effectors into Mammalian Cells
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Cited by 7 •
2015
Electroporation was used to insert purified bacterial virulence effector proteins directly into living eukaryotic cells. Protein localization was monitored by confocal immunofluorescence microscopy. This method allows for studies on trafficking, function, and protein-protein interactions using active exogenous proteins, avoiding the need for heterologous expression in eukaryotic cells.
08:37
Induction of Murine Intestinal Inflammation by Adoptive Transfer of Effector CD4+CD45RBhigh T Cells into Immunodeficient Mice
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Cited by 17 •
2015
Here, we present a protocol to induce colonic inflammation in mice by adoptive transfer of syngeneic CD4+CD45RBhigh T cells into T and B cell deficient recipients. Clinical and histopathological features mimic human inflammatory bowel diseases. This method allows the study of the initiation of colonic inflammation and progression of disease.
02:40
Effect of an Immunomodulatory Pharmacological Agent on the Interaction Between Dendritic Cells and CD4+ T Cells
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2025
This video demonstrates a method of converting dendritic cells (DCs) to tolerogenic DCs (TolDCs) using an immunomodulatory pharmacological agent. This conversion is confirmed by evaluating the TolDC function through their immunosuppressive effect on CD4+ T cells.
FAQs
Differentiation depends on the integration of three inputs: T-cell receptor recognition of peptide–MHC class II, costimulation, and cytokine cues. Together, these signals guide activated cells toward specialized functional programs rather than a single uniform response. The resulting subset influences which immune functions are emphasized, helping tailor protection to the particular infectious or inflammatory context.
These subsets represent distinct functional programs within the effector CD4 T-cell response. Their cytokine patterns and support activities direct different partner cells, including macrophages, B cells, and other leukocytes. This specialization allows responses to be targeted, but it also means that the balance among subsets can shape whether immunity is protective, inflammatory, or associated with disease.
Cytokine secretion converts antigen recognition into coordinated action across the immune system. Effector cells use distinct cytokine outputs to influence macrophage activation, support B-cell antibody production, and regulate other leukocyte functions. Consequently, examining these secreted signals helps researchers determine which type of adaptive response has developed and how strongly it may affect host defense or inflammation.
In infection research, investigators examine how these cells contribute to protection and how their responses relate to pathogen-driven immunopathology. Their subset identity, cytokine production, and support for macrophages or B cells provide complementary information about immune activity. This perspective helps distinguish responses that control infection from those that may accompany harmful immune-mediated effects.
They are relevant because vaccine activity depends in part on the development of coordinated adaptive immune responses. Evaluating effector CD4 T-cell subsets and their cytokine-supported interactions with B cells, macrophages, and other leukocytes can clarify the type of immune support generated. Such analysis connects cellular response patterns with the broader protective potential of vaccination.
These responses can reveal how normally protective immune coordination becomes linked to persistent or misdirected activity. Researchers can compare subset-associated functions, cytokine secretion, and support of other leukocytes in chronic inflammation or autoimmunity. The findings help connect cellular mechanisms with immune-mediated disease and clarify why studying helper T-cell responses is important beyond infection alone.