Tissue Lysate Preparation
Tissue Lysate Preparation - Related Videos
03:36
Preparation of Bacteriophage Lysate for Generalized Transduction
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2026
Source: Saragliadis, A., et al. Producing Gene Deletions in Escherichia coli by P1 Transduction with Excisable Antibiotic Resistance Cassettes. J. Vis. Exp.(2018)This video demonstrates preparation of a bacteriophage lysate containing transducing particles. A donor strain is infected, plaques form, and the soft agar overlay is processed with chloroform to yield a clarified lysate for downstream analysis.
04:39
Quantitative Dot Blot to Estimate Target Proteins in a Tissue Lysate
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2025
This video demonstrates a quantitative dot blot, or QDB, technique for the absolute quantification of proteins of interest in a tissue sample. The proteins in the sample are immobilized on the nitrocellulose membrane inside the wells of a QDB plate. Utilizing target protein-specific antibodies labeled with a peroxidase enzyme, a chemiluminescent substrate is oxidized to produce light, which is measured to determine the protein concentration of the sample.
04:08
Purification of Bacteriophages from Bacterial Lysate
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2026
Source: Pett, N., et al. T4 Bacteriophage and E. coli Interaction in the Murine Intestine: A Prototypical Model for Studying Host-Bacteriophage Dynamics In Vivo. J. Vis. Exp. (2024)This video demonstrates the purification of bacteriophages from bacterial cell lysates using sequential centrifugation, membrane filtration, chloroform extraction, centrifugal filtration, and buffer exchange to obtain a purified phage preparation.
08:32
Preparation of Pooled Human Platelet Lysate (pHPL) as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures
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Cited by 133 •
2009
Human platelet lysate is a rich source of growth factors and a potent supplement in cell culture. This protocol presents the process of preparing a large pool of human platelet lysate by starting from platelet rich plasma, performing several freeze-thaw cycles and depleting the platelet fragments.
08:33
Cell-Free In Vitro mRNA Translation In Drosophila Lysates
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2026
Here, we provide details on how to prepare lysates and perform in vitro translation using Drosophila embryos.
FAQs
Mechanical disruption and chemical lysis contribute different actions. Homogenization breaks the tissue into a more accessible mixture, while detergents in the buffered lysis solution rupture cell membranes. Using both approaches promotes release of intracellular proteins, nucleic acids, metabolites, and other components. The balance matters because lysis strength and processing time must be controlled to preserve target molecules and support consistent recovery.
These conditions help maintain the stability of molecules released from tissue. The buffered solution helps control pH, while temperature and processing time influence how well target molecules remain intact. Protease inhibitors provide additional protection during lysis. Controlling these variables is especially important when the lysate will undergo protein quantification, Western blotting, enzyme assays, or mass spectrometry.
Centrifugation separates insoluble tissue debris from the soluble lysate after disruption. This produces a more suitable fraction for biochemical measurements by reducing the contribution of material that remains insoluble. The separation is useful when the experiment focuses on proteins, nucleic acids, metabolites, or other intracellular components present in the soluble portion.
A typical workflow combines tissue homogenization with a buffered lysis solution containing suitable detergents or protease inhibitors. The disrupted material is then processed under controlled temperature, pH, lysis strength, and time conditions. Centrifugation can follow to separate insoluble debris from the soluble lysate, which is then used for the selected biochemical analysis.
The target molecule and downstream assay should guide the choice of lysis conditions. Protein quantification, Western blotting, enzyme assays, immunoprecipitation, and mass spectrometry may require preservation of different measurable properties in the lysate. Adjusting lysis strength, processing time, temperature, and pH helps maintain suitable sample quality for the planned measurement.
Tissue lysates can support several types of biochemical analysis, including protein quantification, Western blotting, enzyme assays, immunoprecipitation, and mass spectrometry. Their usefulness comes from making intracellular components available in a sample that can be processed according to the analytical goal. The selected application determines which released molecules and sample properties are most important to preserve.
Reproducibility depends on controlling the conditions that govern molecular release and stability. Temperature, pH, lysis strength, and processing time should be handled consistently across samples, along with the use of an appropriate buffered solution and protective components. Careful control of these variables improves the likelihood that lysates will provide comparable biochemical measurements across experiments.