Tumor Passage Protocol
Tumor Passage Protocol - Related Videos
10:02
Passaging Cells
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2023
Cell lines are frequently used in biomedical experiments, as they allow rapid culture and expansion of cell types for experimental analysis. Cell lines are cultured under similar conditions when compared to freshly-isolated, or primary, cells, but with some basic important differences: (i) cell lines require their own specific growth factor cocktails and (ii) their growth must be more closely monitored than primary cells, as the mutations that allow them to be grown indefinitely also can...
10:16
Passaging Human Neural Stem Cells
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Cited by 8 •
2007
The ability to manipulate human neural stem/precursor cells (hNSPCs) in vitro allows to investigate their utility as cell transplants for therapeutic purposes and to explore human neural development. This protocol presents a method of culturing and passaging hNSPCs in hopes of increasing reproducibility of human stem cell research.
08:57
Generating and Imaging Mouse and Human Epithelial Organoids from Normal and Tumor Mammary Tissue Without Passaging
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Cited by 4 •
2022
This protocol discusses an approach for generating epithelial organoids from primary normal and tumor mammary tissue through differential centrifugation. Furthermore, instructions are included for three-dimensional culturing as well as immunofluorescent imaging of embedded organoids.
06:44
Automated Dissection Protocol for Tumor Enrichment in Low Tumor Content Tissues
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Cited by 2 •
2021
Digital annotation with automated tissue dissection provides an innovative approach to enriching tumor in low tumor content cases and is adaptable to both paraffin and frozen tissue types. The described workflow improves accuracy, reproducibility and throughput and could be applied to both research and clinical settings.
07:23
A Protocol for Genetic Induction and Visualization of Benign and Invasive Tumors in Cephalic Complexes of Drosophila melanogaster
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Cited by 5 •
2013
Cooperation between an activated oncogene like RASV12 and mutations in cell polarity genes like scribbled, result in tumor growth in Drosophila where tumor cells also display invasive behaviors. Here a simple protocol for the induction and observation of the benign and invasive tumors is presented.
FAQs
Passage timing helps keep tumor cultures within controlled growth conditions before they are transferred again. If timing varies substantially between experiments, differences in culture history can complicate comparisons of tumor behavior, drug response, or treatment resistance. Consistent timing therefore supports model quality and improves reproducibility when researchers compare results across passages or experimental runs.
Dissociation separates tumor material when a transfer requires a more manageable cell or tissue preparation. A Tumor Passage Protocol may use mechanical or enzymatic dissociation, depending on the material and experimental workflow described by the researchers. This step supports transfer into fresh culture conditions while maintaining a standardized process for propagating the model over successive generations.
Controlled density makes the starting conditions more consistent each time tumor material enters fresh culture. Researchers can then interpret differences in growth, drug response, or treatment resistance with less uncertainty caused by unequal starting amounts. Maintaining this variable is especially important when experiments compare multiple passages or assess changes in tumor characteristics over generations.
A typical workflow begins by recovering the tumor cells or tissue, followed by mechanical or enzymatic dissociation when needed. The prepared material is transferred into fresh culture conditions at a controlled density, then monitored for growth until the next passage. Applying these steps consistently creates a repeatable cycle for maintaining cancer models throughout an experiment.
Repeated passage is useful when investigators need to maintain a tumor model for studies conducted over time. The approach supports experiments examining tumor biology, responses to drugs, treatment resistance, and genetic or phenotypic changes across generations. Consistent propagation allows related experiments to use a continuing model rather than relying on a single culture time point.
Successive passages provide a framework for examining whether tumor models show changes in growth, drug response, treatment resistance, or other genetic and phenotypic characteristics. Researchers can compare observations between generations while keeping passage timing, culture conditions, and transfer density controlled. Such comparisons help distinguish meaningful model changes from variation introduced by inconsistent handling.