In Vitro Anticancer Activity
In Vitro Anticancer Activity - Related Videos
09:39
Assessing Specificity of Anticancer Drugs In Vitro
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Cited by 8 •
2016
The goal of this protocol is to assess specificity of anticancer drugs in vitro using mixed cultures containing both tumor and non-tumor cells.
08:03
Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
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Cited by 7 •
2016
Photodynamic therapy (PDT) is an alternative choice for lung cancer treatment. To increase the therapeutic effect of PDT, lung cancer-targeted nanoparticles combined with chemotherapy were developed. Both in vitro and in vivo anticancer efficacies of PDT with prepared nanoparticles were evaluated.
01:49
An Assay To Evaluate the Anticancer Effects of Lactobacillus Cell-Free Supernatant
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2025
This video demonstrates an in vitro assay to study the anticancer effects of Lactobacillus cell-free supernatant (LCFS). Upon exposing colorectal cancer spheroids to varying doses of LCFS, the interaction with the bacterial metabolites in LCFS induces apoptosis in the cancer cells, disrupting the spheroid structure and leading to cell death in a dose-dependent manner.
04:11
Colony Formation Assay: Assessing the Efficacy of Anticancer Agents on Colony-Forming Lung Cancer Cells
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2023
This video describes the colony formation assay, which helps determine lung cancer cells' ability to proliferate indefinitely and form individual colonies. We can analyze the effect of an anticancer agent on the colony-forming cells by analyzing the changes in the number and/or size of the resulting colonies.
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
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Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
FAQs
Concentration is a central experimental variable because responses can change as the amount of a candidate agent changes. Testing defined concentrations allows investigators to determine whether inhibition or loss of survival is dose dependent and to compare relative potency among candidates. This comparison helps distinguish stronger or weaker activity before a treatment advances to more complex biological models.
These readouts represent different response categories. Viability, proliferation, cytotoxicity, apoptosis, and cell behavior can each reveal a distinct effect of the same treatment. Choosing among them, or examining several together, helps investigators determine whether a candidate primarily limits growth, reduces survival, triggers a death response, or changes cellular behavior.
In bioengineering, the test system can be used to compare more than free compounds. Researchers can apply activity assessments to drug-delivery systems, biomaterials, nanoparticles, and tissue-engineered models by examining their responses in cultured tumor cells. This makes the assay a screening step for engineered designs as well as for candidate anticancer agents.
A typical workflow begins by selecting cultured tumor cells, exposing them to a series of defined candidate concentrations, and measuring the resulting response with biochemical or imaging-based assays. Investigators then compare outcomes such as viability, proliferation, cytotoxicity, apoptosis, or cell behavior across conditions. Keeping exposure conditions defined is essential for interpreting differences between treatments.
Biochemical and imaging-based assays provide complementary ways to assess treatment response. Biochemical measurements can assess a selected cellular outcome, while imaging can document changes in cells or their behavior. Using an appropriate readout enables researchers to connect a candidate treatment with a specific observed effect, rather than relying on one generalized measure of anticancer performance.
Results are most useful for prioritization rather than as a complete prediction of performance in an organism. A candidate that shows favorable activity in cultured tumor cells can be selected for further testing in more complex biological models. In this way, the studies help narrow the field of compounds, materials, or engineered treatments that merit additional investigation.