What are HEK293 cell lines?
What are HEK293 cell lines?
HEK293 is a cell line derived from human embryonic kidney cells grown in tissue culture. They are also known, more informally, as HEK cells. This particular line was initiated by the transformation and culturing of normal HEK cells with sheared adenovirus 5 DNA.
Is HEK293 a normal cell line?
Thus, HEK 293T cell line cannot be used as a normal cells (from “HEK293 cell line in cell biology and cancer research: origin, phenotype, karyotype, tumorigenicity”, manuscript in preparation).
What are HEK293 cells used for?
HEK 293 cells have been widely used in cell biology research for many years, because of their reliable growth and propensity for transfection. They are also used by the biotechnology industry to produce therapeutic proteins and viruses for gene therapy as well as safety testing for a vast array of chemicals.
What is the difference between HEK293 and HEK293t?
The key difference between HEK293 and HEK293t is that HEK293 is an immortalized cell line derived from the embryonic human kidney that is transfected with sheared human adenovirus type 5DNA while HEK293t is a daughter cell line derived from HEK293 original cell line that is transfected with a plasmid vector carrying …
Are HEK cells safe?
When working with HEK293 cells, besides standard viral safety issues, special precautions should be taken because this cell line is susceptible to infection by numerous viruses. A viral contamination event occurred with this cell line even after a number of precautions were taken.
How fast do HEK cells grow?
HEK-293 cells see cell doubling once every 24–48 hours depending on the care. Most HEK-293T cells double every 12–20 hours depending on conditions. Our cell doubling time is typically closer to 12 hours.
Is HEK293 cancerous?
Thus, HEK293 is not a model for normal human cells; these cells are immortalized already by known oncogene but not malignant yet.
Is HEK293 Safe?
Are HEK293 cells immortal?
HEK 293 immortal cell line that is comparatively easy to handle. An immortalised cell line is a population of cells from a multicellular organism which would normally not proliferate indefinitely but, due to mutation, have evaded normal cellular senescence and instead can keep undergoing division.
What biosafety level is HEK293 cells?
Biosafety Level 2
Biosafety Level 2 (BSL-2) protections apply to work with pathogens or infectious organisms associated with human diseases. These organisms pose a moderate health hazard. Centers for Disease Control and Prevention (CDC) guidelines (pdf) require BSL-2 containment for work with HEK 293 cell lines.
How do you maintain HEK cells?
Decontaminate the vial by wiping it with 70% ethanol before opening in a class II biological safety cabinet. Cells should be maintained between 10% and 90% confluency in a 37°C, 5% CO2 tissue culture incubator. This typically will require passaging the culture twice a week.
How do you thaw a 293 cell?
Thawing Cells
- Remove the vial of frozen cells from liquid nitrogen and thaw quickly in a 37°C water bath.
- Just before the cells are completely thawed, decontaminate the outside of the vial with 70% ethanol, and transfer the cells to a sterile 15 ml tube containing PBS.
Are HEK cells immortal?
Where did HEK 293 cells come from?
Originating from a female fetus, HEK293 cells are today among the most used mammalian cell lines for a wide range of applications because of their ease of transfection as well as culture. Despite stemming from kidney tissue, HEK293 cells – time and time again – exhibited properties of immature neurons.
How quickly do HEK cells grow?
Where did HEK293 cells come from?
How do I revive my cell line?
The subsequent recovery of cryopreserved cells is straightforward: Cells are thawed rapidly in a water bath at 37°C, removed from the freeze-medium by gentle centrifugation and/or diluted with growth medium, and seeded in a culture vessel in complete growth medium.
Why is it called HEK293?
What Is HEK293? HEK293 are immortalized human embryonic kidney cells. Originally isolated in the 1970s by Alex Van der Eb, a Dutch biologist, it was postdoc Frank Graham who transformed the cell line with sheared adenovirus 5 (Ad5). The ‘293’ refers to the fact that it was Graham’s 293rd experiment.
Why are HEK cells immortal?
How do I revive hek293 cells?
Thaw the tube containing the frozen cells in a 37°C water bath for 2 minutes. Immediately transfer the thawed cell stock to the flask containing the equilibrated growth media. Incubate cells overnight at 37°C, 5% CO2 and replace media the next day. Continue to incubate the revived cells for 48 hours and change media.
What is the HEK293 cell line?
The HEK293 cell line is a permanent line established from primary embryonic human kidney, which was transformed with sheared human adenovirus type 5 DNA. The adenoviral genes expressed in this cell line allow the cells to produce very high levels of recombinant proteins.
Do you offer HEK293 cell lines for high-density suspension culture?
We offer several variants of the HEK293 cell line, including those adapted for high-density suspension culture in serum-free media. For more information, visit the mammalian cell culture pages on our website.
What is the phase contrast of HEK293 cells in adherent culture?
The phase contrast images below show the morphology of healthy HEK293 cells in adherent culture at 80% confluency (Figure 3.1) and in suspension culture (Figure 3.2). Note that adherent mammalian cultures should be passaged when they are in the log phase, before they reach confluence (see When to Subculture ).
How do you grow HEK293 cells?
HEK-293 cells should be grown in a complete SFMII growth medium supplemented with 4 mM L-glutamine. Flasks should be incubated at 37°C in 5% CO2 and HEK293 cell doubling time is approximately 34 hours.
