Immune Effector Cells
Immune Effector 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.
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.
04:41
Introduction of Bacterial Effector Proteins into Mammalian Cells by Electroporation
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2025
In this video, we demonstrate the introduction of bacterial effector proteins into mammalian cells by electroporation. The intracellular localization of the bacterial effector proteins is detected by confocal microscopy following staining with specific fluorophore-conjugated antibodies.
02:20
Monitoring Bacterial Infection and Effector Protein Delivery in Plant Cells
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2025
Source: Lee, H. et. al., Split Green Fluorescent Protein System to Visualize Effectors Delivered from Bacteria During Infection. J. Vis. Exp. (2018)This video demonstrates a method for monitoring bacterial infection and effector protein delivery in plant cells using split superfolder green fluorescent protein (sfGFP) complementation combined with confocal microscopy. The approach enables precise visualization of effector translocation into the host cell cytosol.
07:26
Isolation of Functional Cardiac Immune Cells
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Cited by 9 •
2011
This method for isolating functional immune cells from the heart provides an alternative to the conventional methods of collagenase digestion, which causes unwanted immune cell activation, resulting in a decreased responsiveness of these cells. Our method of isolation yields functional cardiac immune cells by avoiding problems associated with enzymatic digestion.
FAQs
An immune response moves through a sequence of recognition, receptor-driven signaling, and cellular action. Once an antigen or danger signal is detected, signaling can activate phagocytosis, antibody secretion, cytokine release, or targeted killing with cytotoxic granules. Tracking this sequence helps explain how an initial detection event becomes pathogen removal, abnormal-cell elimination, inflammation, or adaptive immune activity.
The response depends on the effector population and the signals it receives. Macrophages and neutrophils are associated with phagocytosis, activated B cells with antibody secretion, and targeted killing with cytotoxic granules in relevant effector populations. Cytokine release provides another route for coordinating defense. These distinct outputs allow immune responses to address pathogens, infected cells, and abnormal cells.
No single effector population accounts for every stage of host defense. Macrophages, neutrophils, and natural killer cells contribute to immediate protective activity, while activated T and B cells help shape adaptive immunity. Their coordinated responses connect cellular elimination, cytokine-driven inflammation, and antibody secretion. This cooperation influences whether an infection is controlled and how longer-term immune activity develops.
A useful conceptual workflow follows four linked events: the triggering antigen or danger signal, receptor-driven activation, the effector action, and the resulting biological outcome. Investigators can then relate phagocytosis, antibody secretion, cytokine release, or cytotoxic killing to pathogen clearance, infected-cell elimination, abnormal-cell removal, inflammation, or adaptive immunity. This framework connects cellular mechanisms with whole-response consequences.
Vaccination studies can use immune effector cells to examine how immune activation produces protective activity and shapes adaptive immunity. Attention may focus on antibody secretion by activated B cells, responses involving activated T cells, and the coordination of cytokine release with other effector functions. These cellular outcomes help relate vaccination to the biological capacity to respond to later immune challenges.
The balance and coordination of effector activities can help explain why infections are controlled, persist, or produce different outcomes. Phagocytosis, targeted killing, antibody secretion, and cytokine release each contribute to defense, while their inflammatory effects are relevant to immune-mediated disease. Studying these responses therefore links cellular biology with both protection from pathogens and harmful immune activity.
Cellular immunotherapy draws on the ability of immune effector cells to recognize and act against abnormal cells. Its biological rationale comes from receptor-driven signaling followed by targeted killing, cytokine release, or other effector functions. Studying macrophages, natural killer cells, and activated T cells in this context helps connect their normal defensive roles with therapeutic strategies designed to eliminate abnormal cells.