In Vitro Evaluation
In Vitro Evaluation - Related Videos
09:19
Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
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Cited by 4 •
2015
Here, real-time monitoring of tumor cell metabolism, combined with an in vivo chicken embryo chorio-allantoic membrane (CAM) model of metastasis, are used to evaluate novel anti-cancer targets/agents for their ability to sensitize tumor cells to DNA damaging chemotherapeutics.
10:51
Evaluating Primary Blast Effects In Vitro
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Cited by 12 •
2017
Understanding how cells are modulated by exposure to shock waves can help identify the mechanisms behind injuries triggered from blast events. This protocol uses custom-built shock tube equipment to apply shock waves at a range of pressures to cell monolayers and to identify the subsequent effects on cell viability.
07:05
In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
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2025
In this study, Er,Cr:YSGG and diode lasers applied separately to the flat surface of a total of 96 specially designed titanium cylinders. A thermocouple placed on the other surface and the temperature was measured. Surface roughness analyzed by profilometer, SEM and AFM.
09:44
In Vitro Evaluation of Oncogenic Transformation in Human Mammary Epithelial Cells
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2020
This protocol provides experimental in vitro tools to evaluate the transformation of human mammary cells. Detailed steps to follow-up cell proliferation rate, anchorage-independent growth capacity, and distribution of cell lineages in 3D cultures with basement membrane matrix are described.
03:42
In Vitro Evaluation of Bacterial Killing by Neonatal Mouse Splenic Phagocytes
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2026
Source: Seman, B. G., et.al. Neonatal Imaging Model of Gram-Negative Bacterial Sepsis. J. Vis. Exp. (2020)This video demonstrates the isolation of neutrophils and inflammatory monocytes from neonatal mouse spleens and their application in a luminescent bacterial killing assay. It covers mechanical dissociation, red blood cell lysis, magnetic bead–based cell enrichment, bacterial incubation, and antibiotic protection. Timed luminescence readings indicate initial bacterial internalization...
FAQs
By placing cultured immune cells, tissues, or microorganisms under defined laboratory conditions, researchers can examine one stimulus or treatment effect at a time. This controlled setting helps link a measured response, such as cytokine release, pathogen replication, or cellular activation, to a specific experimental variable. The resulting evidence supports mechanistic interpretation and guides later study design.
Useful readouts include pathogen replication, cytokine release, antibody activity, cellular activation, and viability. Together, these measurements show whether a stimulus changes immune function, affects microbial growth, alters antibody-mediated activity, or harms the tested cells. Selecting a response that matches the research question allows investigators to compare treatments or immune conditions more precisely.
Laboratory systems isolate selected biological variables, whereas a living host contains interacting tissues, immune processes, and other conditions that are not fully represented in the assay. Consequently, an observed treatment effect or immune response may not reproduce in vivo. Even with this limitation, in vitro findings provide efficient mechanistic evidence for prioritizing experiments and informing subsequent animal or clinical studies.
A typical workflow uses a defined laboratory system containing cultured immune cells, tissues, or microorganisms, followed by exposure to a selected stimulus, pathogen, treatment, or other test condition. Investigators then measure a relevant outcome, such as viability, cytokine release, antibody activity, cellular activation, or pathogen replication, and compare the responses across the experimental conditions.
In vitro testing is useful when researchers need early evidence about how a vaccine-related stimulus, antimicrobial agent, or immunotherapy affects biological systems. Assays can compare immune responses, examine antibody activity, assess pathogen replication, or evaluate cellular effects before more complex studies. This screening role helps inform experimental priorities and supports therapeutic development.
Using defined combinations of immune cells, tissues, and microorganisms, researchers can examine how host responses relate to pathogen behavior. Measurements such as cellular activation, cytokine release, pathogen replication, and viability provide distinct views of the interaction. This approach helps separate particular response patterns and supports mechanistic investigation of infection-related processes before animal or clinical research.