Tissue Dissociation
Tissue Dissociation - Related Videos
05:26
Mechanical Dissociation: A Method to Obtain Viable Cells from a Tissue
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2023
This video describes the non-enzymatic dissociation of fresh human tissue to obtain viable cells. The technique is used for qualitative and quantitative analysis of CD45 positive cells (lymphocytes/leukocytes) present in various normal and malignant human tissues.
03:35
Dissociating and Culturing Neurons from Hippocampal Tissue Samples
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2025
This video demonstrates the dissociation and culture of hippocampal neurons from hippocampal tissue samples using enzymatic and mechanical dissociations. The treatment with Ara-C inhibits the growth of non-neuronal cells, facilitating the selective growth of hippocampal neurons.
07:03
Standardized Preparation of Single-Cell Suspensions from Mouse Lung Tissue using the gentleMACS Dissociator
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Cited by 45 •
2009
Dissociating cells from specific tissue types requires specific parameters for tissue agitation to obtain a high volume of viable, culturable cells. The Miltenyi gentleMACS dissociator optimizes this task with a simple, practical protocol. In this publication the use of this apparatus on lung tissue is explained.
10:35
Rapid Isolation And Purification Of Mitochondria For Transplantation By Tissue Dissociation And Differential Filtration
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Cited by 129 •
2014
A method for rapid isolation of mitochondria from mammalian tissue biopsies is described. Rat liver or skeletal muscle preparations were homogenized with a commercial tissue dissociator and mitochondria were isolated by differential filtration through nylon mesh filters. Mitochondrial isolation time is <30 min compared to 60 - 100 min using alternative methods.
07:29
A Simple and Rapid Protocol to Non-enzymatically Dissociate Fresh Human Tissues for the Analysis of Infiltrating Lymphocytes
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Cited by 29 •
2014
This protocol describes the rapid non-enzymatic dissociation of fresh human tissue fragments for qualitative and quantitative assessment of CD45+ cells (lymphocytes/leukocytes) present in various normal and malignant human tissues. Additionally, the supernatant obtained from the primary tissue homogenate can be collected and stored for further analysis or experimentation.
FAQs
Enzymatic digestion targets extracellular matrix components and weakens cell-cell junctions, reducing the structural connections that hold tissue together. This step helps release cells while preserving viability, but its effectiveness depends on selecting conditions that do not create excessive cellular stress. The balance determines whether the resulting suspension is suitable for downstream biological analysis.
Mechanical disruption, such as mincing or trituration, physically separates tissue, while enzymatic digestion weakens the matrix and junctions that resist separation. Combining these approaches can produce more effective dissociation than relying on either type of disruption alone. However, excessive mechanical force or digestion may compromise cell viability and affect the quality of later experiments.
Enzyme choice, exposure time, temperature, and mechanical force are major variables because they influence cell yield, viability, surface-marker integrity, and cellular stress. Increasing disruption is not automatically beneficial: conditions that release more cells may also damage markers or reduce viability. Optimization therefore requires balancing efficient release with preservation of biologically informative cell properties.
The desired endpoint depends on the downstream experiment. A preparation containing individual cells supports analyses that require cells to be measured separately, whereas small clusters may result when tissue is only partly dissociated. Because dissociation conditions affect both yield and cell integrity, researchers must match the degree of separation to the intended analysis rather than assume maximal disruption is always preferable.
A basic workflow combines physical tissue disruption with enzymatic treatment. Mincing or trituration first reduces the tissue into smaller portions, and enzymatic digestion then weakens extracellular matrix components and cell-cell junctions. The process produces individual cells or small clusters for subsequent analysis. Exact conditions require optimization because the same treatment can influence yield, viability, and marker preservation.
Optimization involves adjusting enzyme choice, exposure time, temperature, and mechanical force in relation to the intended application. The goal is not simply to maximize the number of released cells, but to maintain viability, preserve surface markers, and limit cellular stress. Careful control of these variables improves the reliability and interpretability of downstream biological measurements.
Dissociated tissue provides material for primary cell culture, flow cytometry, microscopy, and single-cell sequencing. Each application benefits from access to individual cells or suitably small clusters, but the preparation must retain relevant cellular features. For example, surface-marker integrity matters for flow-based analysis, while viability and cellular condition are important for culture and other downstream experiments.