Cytotoxicity Assay
Cytotoxicity Assay - Related Videos
11:48
Assay for Cell Death: Chromium Release Assay of Cytotoxic Ability
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2023
Source: Frances V. Sjaastad1,2, Whitney Swanson2,3, and Thomas S. Griffith1,2,3,4 1 Microbiology, Immunology, and Cancer Biology Graduate Program, University of Minnesota, Minneapolis, MN 55455 2 Center for Immunology, University of Minnesota, Minneapolis, MN 55455 3 Department of Urology, University of Minnesota, Minneapolis, MN 55455 4 Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 One of the main functions of the cells of the immune system is to remove target cells...
03:00
An Assay to Evaluate Immunodominance in Cytotoxic T Lymphocyte Responses
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2025
The video showcases a flow cytometry-based assay for assaying immunodominance in cytotoxic T lymphocytes or CTL responses. Injected fluorescent target cells exhibit varying fluorescence corresponding to immunogenic epitopes. Post-spleen collection and sorting reveal a reduction in high-intensity fluorescent cells, confirming immunodominance in CTL responses.
11:14
Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay
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Cited by 64 •
2013
A method for synthesis of air-sensitive titanium and vanadium anticancer agents is described, along with the evaluation of their cytotoxic activity towards human cancer cell line by the MTT Assay.
03:35
Cytotoxicity Assay of Staphylococcus aureus Strains on Neutrophils following Phagocytosis
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2025
In this video, we demonstrate an assay to detect the cytotoxicity of virulent and less virulent Staphylococcus aureus strains against human neutrophils following phagocytosis using flow cytometry.
03:40
β-Galactosidase Assay to Evaluate Drug-Induced Cytotoxicity in Parasites
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2023
In this video, we describe a simple and robust method to determine the cytotoxic potential of a trypanocidal drug against a parasite, Trypanosoma cruzi, expressing the β-galactosidase enzyme. β-galactosidase serves as a cell lysis indicator, and its activity can be used to assess the effects of the drug.
FAQs
A Cytotoxicity Assay can quantify damage through reduced metabolic activity, loss of membrane integrity, or release of intracellular components. These readouts capture different cellular changes after exposure to a test condition, so the selected measurement influences how the outcome is interpreted. Linking the signal to the observed type of damage helps researchers compare cell injury across experiments.
Natural killer cells and cytotoxic T cells serve as immune effectors whose activity can be evaluated against target cells. The resulting cytotoxicity measurement indicates how effectively these cells damage or kill those targets under the tested conditions. This makes the assay useful for examining cellular host defense and comparing immune-mediated activity in immunology studies.
Interpretation depends on which test condition is applied to the target cells. Pathogens can be assessed for their ability to cause cell damage directly, whereas natural killer cells or cytotoxic T cells can be evaluated for immune effector activity. Comparing these conditions helps separate pathogen-associated injury from damage associated with host immune responses.
A basic workflow exposes target cells to a defined test condition, allows the interaction to occur, and then measures a damage-associated change. Depending on the study, the test condition may contain immune effectors, a drug, a toxin, or a pathogen. The resulting measurement is used to compare the extent of target-cell injury between tested conditions.
Researchers apply the assay to evaluate natural killer cell and cytotoxic T-cell activity, investigate pathogen-induced cell damage, and examine how treatments affect target-cell survival. These uses connect a measurable cellular outcome with host defense, infection-associated injury, or treatment response, supporting studies of disease severity and the biological effects of therapeutic interventions.
The assay allows researchers to compare how antimicrobial or immunomodulatory treatments influence cytotoxic outcomes in target cells. Measurements can reveal whether a treatment is associated with reduced or increased damage under the tested conditions. This information contributes to assessing therapeutic effects while also providing evidence relevant to treatment safety and cellular injury.