Cancer Cell Killing
Cancer Cell Killing - Related Videos
04:41
Killing K562 Cells by Peripheral Blood Mononuclear Cells Exposed to Tobacco Product Preparations
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2025
In this video, we study the effect of a whole smoke-conditioned medium, a combustible tobacco product preparation, on K562 cell killing by effector peripheral blood mononuclear cells.
09:49
Antigen Specific In Vivo Killing Assay using CFSE Labeled Target Cells
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Cited by 39 •
2010
Many infections elicit a strong CTL response, but occasionally, the quantity of responding cells does not correlate to control of the pathogen1. One measure of CTL quality is their ability to kill specifically2. CFSE labeling of target cells can be used to investigate this CTL response quality in vivo3,4.
08:19
A Spheroid Killing Assay by CAR T Cells
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Cited by 21 •
2018
This protocol is designed to assess immunotherapeutic redirected T-cell (CAR T-cell) cytotoxicity against 3D structured cancerous cells (spheroids) in real time.
04:29
Assessment of Opsonophagocytic Killing Activity against Bacterial Pathogens
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2025
The video shows an in vitro opsonophagocytic killing assay using a co-culture of human neutrophils with Streptococcus pneumoniae. Antibodies and complement proteins facilitate opsonization of the bacteria, enabling neutrophils to recognize and kill bacteria, showing successful neutrophil opsonophagocytic activity.
07:16
Isolation of Cancer Stem Cells From Human Prostate Cancer Samples
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Cited by 6 •
2014
The isolation of cancer stem cells (CSCs) directly from human tissues is requisite for their biological characterization. This manuscript describes a methodology for the isolation of prostate CSCs from human tissues, while also providing tips on troubleshooting difficult steps.
FAQs
Cytotoxic T lymphocytes identify tumor-associated antigens when those antigens are presented by major histocompatibility complex molecules. This recognition supplies specificity, distinguishing malignant cells carrying relevant antigenic signals from cells lacking them. In research, this pathway connects antigen presentation with immune surveillance and provides a framework for evaluating how altered presentation may affect immune-mediated elimination.
Natural killer cells can recognize abnormal cellular patterns or reduced antigen presentation, giving them a complementary targeting route to cytotoxic T lymphocytes. This distinction matters because tumor cells that become less visible through antigen-presentation changes may still display signals detected by natural killer cells. Comparing these recognition modes helps researchers investigate immune escape and the limits of tumor surveillance.
Once an immune cell engages a susceptible target, perforin and granzymes are released together and can trigger apoptosis, a programmed form of cell death. Their combined activity links recognition to an observable loss of viable malignant cells. Studying this step allows investigators to assess whether immune cells merely contact targets or induce the lethal response required for effective cancer cell killing.
Researchers measure target-cell death to determine whether immune cells successfully eliminate malignant targets. These measurements can evaluate immune-cell potency and treatment response, linking a cellular outcome to experimental performance. The approach is useful for comparing how effectively immune cells produce target-cell loss and for assessing whether a treatment generates the intended cytotoxic effect.
Within immunology and infection, studying immune-mediated cancer cell killing helps connect host defense with infection-related cancer risk. Investigators can examine how immune surveillance operates in the broader context of abnormal cells and how failures in recognition or elimination may relate to immune escape. This perspective places tumor killing within both cancer biology and infectious-disease research.
Adoptive cell transfer and immune checkpoint blockade are therapeutic approaches developed in the context of immune-mediated tumor elimination. Research on recognition, cytotoxic mechanisms, and immune escape helps establish why these strategies are relevant to cancer treatment. Their study also provides a way to connect cellular killing mechanisms with treatment response, which can be evaluated by measuring target-cell death.