In Vitro Protocol
In Vitro Protocol - Related Videos
08:25
Advanced 3D Liver Models for In vitro Genotoxicity Testing Following Long-Term Nanomaterial Exposure
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Cited by 21 •
2020
This procedure was established to be used for developing advanced 3D hepatic cultures in vitro, which can provide a more physiologically relevant assessment of the genotoxic hazards associated with nanomaterial exposures over both an acute or long-term, repeated dose regimes.
08:38
Protein Membrane Overlay Assay: A Protocol to Test Interaction Between Soluble and Insoluble Proteins in vitro
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Cited by 6 •
2011
Testing protein-protein interaction is indispensable for dissection of protein functionality. Here, we introduce an in vitro protein-protein binding assay to probe a membrane-immobilized protein with a soluble protein. This assay provides a reliable method to test interaction between an insoluble protein and a protein in solution.
06:14
Moving Upwards: A Simple and Flexible In Vitro Three-dimensional Invasion Assay Protocol
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Cited by 2 •
2018
This protocol describes an inverted vertical invasion assay that could be used to quantify the migration and invasion capabilities of cells in a three-dimensional setting while preserving the cell microenvironment. This assay is suitable for rare and/or sensitive cells.
08:03
An In Vitro Organ Culture Model of the Murine Intervertebral Disc
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Cited by 22 •
2017
Whole organ culture of the intervertebral disc (IVD) preserves the native extracellular matrix, cell phenotypes, and cellular-matrix interactions. Here we describe an IVD culture system using mouse lumbar and caudal IVDs in their functional spinal units and several applications utilizing this system.
07:03
A Simple Pit Assay Protocol to Visualize and Quantify Osteoclastic Resorption In Vitro
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Cited by 2 •
2022
Here, we present a simple and effective assay procedure for resorption pit assays using calcium phosphate coated cell culture plates.
FAQs
Reproducibility depends on keeping experimental conditions consistent across runs. Temperature, pH, nutrient availability, and exposure time can be specified and controlled so that observed differences are more likely to reflect the sample or design being evaluated rather than uncontrolled environmental variation. This makes results easier to compare when engineering alternatives.
Defined conditions create a common basis for evaluating different samples, materials, or device designs. When researchers hold environmental parameters and exposure periods consistent, measured responses can be compared more directly. This controlled comparison helps identify performance limits and supports decisions about which engineering designs require refinement before additional testing.
A well-specified protocol identifies the samples, reagents, equipment, environmental parameters, and sequence of experimental steps. It should also state relevant controls for temperature, pH, nutrient availability, and exposure time. Recording these elements provides a reproducible framework, allowing researchers to repeat the work and determine whether outcomes remain consistent.
Direct measurement connects a tested design to an observable response under controlled conditions. In engineering studies, this approach can reveal how biomaterials, medical devices, engineered tissues, or cell-material interactions perform during the protocol. The resulting measurements help researchers compare designs, recognize limitations, and guide modifications toward safer or more effective technologies.
The workflow begins by selecting the samples and preparing the required reagents and equipment. Researchers then establish the specified environmental conditions, follow the sequential experimental steps, and measure the resulting response. Maintaining the stated temperature, pH, nutrient availability, and exposure time throughout the procedure supports consistent results across repeated evaluations.
Engineers use these protocols to evaluate biomaterials, medical devices, engineered tissues, and interactions between cells and material surfaces or structures. Testing under controlled laboratory conditions can reveal how a design performs and where its limits occur before further testing. The findings help refine candidate technologies and prioritize designs for continued development.