Cell Thawing Process
Cell Thawing Process - Related Videos
07:32
Freezing, Thawing, and Packaging Cells for Transport
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Cited by 2 •
2008
Cultured mammalian cells are used extensively in cell biology studies. This video describes the basic skills required to freeze and store cells and how to recover frozen stocks.
08:49
Freezing and Thawing Human Embryonic Stem Cells
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Cited by 6 •
2009
Since James Thomson et al developed a technique in 1998 to isolate and grow hES in culture, freezing cells for later use and thawing and expanding cells from a frozen stock have become important procedures performed in routine hES cell culture. Since hES cells are very sensitive to the stresses of freezing and thawing, special care must taken. Here we demonstrate the proper technique for rapidly thawing hES cells from liquid nitrogen stocks, plating them on mouse embryonic feeder cells, and...
08:18
Degassing Liquids with Freeze-Pump-Thaw Cycling
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2023
Source: Laboratory of Dr. Neil Branda — Simon Fraser University Degassing refers to the process by which dissolved gases are removed from a liquid. The presence of dissolved gases such as oxygen or carbon dioxide can impede chemical reactions that utilize sensitive reagents, interfere with spectroscopic measurements, or can induce unwanted bubble formation. A number of different techniques are available for degassing liquids; some of these include heating, ultrasonic agitation, chemical...
07:57
Thawing, Culturing, and Cryopreserving Drosophila Cell Lines
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Cited by 13 •
2019
Drosophila cell lines are important reagents for both fundamental and biomedical research. This article provides protocols for thawing, subculturing, and the cryopreservation of commonly used Drosophila cell lines to assist researchers in incorporating the use of these reagents in their research.
06:46
Use of Freeze-thawed Embryos for High-efficiency Production of Genetically Modified Mice
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Cited by 6 •
2020
Here, we present a modified method for cryopreservation of one-cell embryos as well as a protocol that couples the use of freeze-thawed embryos and electroporation for the efficient generation of genetically modified mice.
FAQs
Rapid warming helps limit ice recrystallization, a change in which ice crystals can reform or enlarge during warming. Controlling this process supports better recovery of cryopreserved cells and reduces damage associated with the transition from frozen storage to culture conditions. Consistent warming is therefore an important factor in maintaining comparable outcomes between cell culture experiments.
Dimethyl sulfoxide, or DMSO, acts as a cryoprotectant during frozen storage, but continued exposure after thawing can contribute to chemical toxicity and osmotic stress. Prompt dilution and removal reduce these effects before cells resume culture. This step helps create conditions more suitable for recovery, attachment, and later proliferation in growth medium.
Ice recrystallization can compromise cells during warming, while osmotic stress can arise when cells encounter changing solute conditions as cryoprotectants are diluted. The process addresses both risks through rapid warming followed by prompt dilution and removal of DMSO. Managing these separate sources of stress improves the likelihood that cells will recover function in culture.
A typical workflow begins with rapid warming of the frozen cells, commonly using a water bath. The thawed material is then promptly diluted to reduce DMSO exposure and transferred into suitable growth medium. Cells are allowed to recover in culture, after which their viability, attachment, and proliferation can be assessed to evaluate the outcome.
Post-thaw assessment commonly examines viability, attachment, and proliferation. Viability indicates how well cells survived recovery, attachment shows whether they establish themselves in culture, and proliferation reflects whether they resume growth. Considering these outcomes together provides a broader picture of cell recovery than relying on survival alone and helps identify inconsistent culture performance.
Consistency reduces variation introduced when cryopreserved cells return to culture, making results easier to compare across experiments. Reliable recovery supports biological research applications that depend on stable cell growth and function, including drug testing, disease modeling, and cell-based therapies. The process is therefore relevant not only to routine culture but also to reproducible experimental design.