Vergleich

Chang Liver (HeLa) Cells Europäischer Partner

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ArtNr CLS-300139
Hersteller CLS Cell Lines Service
Menge 1 cryovial
Kategorie
Typ Cell line
Zertifikat For a certificate of analysis, please send an inquiry to info@hoelzel.de.
Specific against Human (Homo sapiens)
Dry ice Yes
ECLASS 10.1 42040401
ECLASS 11.0 42040401
UNSPSC 41106509
Alias Chang-liver,Chang Cells,Chang,CHL
Lieferbar
Manufacturer - Category
Liver cancer cell lines
Description
The Chang Liver cell line, originally believed to be derived from normal human liver tissue, has undergone significant reclassification following advanced genetic profiling. STR PCR DNA profiling techniques have demonstrated that the Chang Liver cell line is indistinguishable from the HeLa cell line, suggesting that it is not derived from hepatocyte cells as previously thought, but rather should be considered a HeLa derivative. This revelation has important implications for researchers using this cell line, emphasizing the need for careful interpretation of experimental results derived from its use.

HeLa cells, originally taken from Henrietta Lacks, a Black woman, in the early 1950s, are known for their robust growth and genetic stability in vitro, characteristics likely shared by the Chang Liver cell line given its genetic similarity. This background necessitates that studies employing the Chang Liver cell line in research related to liver function or diseases may need to be re-evaluated or confirmed with additional hepatocyte-specific models. The misidentification also highlights broader issues in cell culture practices, including cross-contamination and mislabeling, underscoring the importance of regular authentication of cell lines used in research settings.
Tissue
Liver
Growth properties
Adherent
Disease
Adenocarcinoma
Age
30 years
Gender
Female
Morphology
Epithelial-like
Biosafety Level
1
Viruses
Tested MHV (mouse hepatitis virus) negative
Culture Medium
EMEM, w: 2 mM L-Glutamine, w: 1.5 g/L NaHCO3, w: EBSS, w: 1 mM Sodium pyruvate, w: NEAA (Cytion article number 820100c)
Medium Supplements
Supplement the medium with 10% FBS
Subculturing
Remove the old medium from the adherent cells and wash them with PBS that lacks calcium and magnesium. For T25 flasks, use 3-5 ml of PBS, and for T75 flasks, use 5-10 ml. Then, cover the cells completely with Accutase, using 1-2 ml for T25 flasks and 2.5 ml for T75 flasks. Let the cells incubate at room temperature for 8-10 minutes to detach them. After incubation, gently mix the cells with 10 ml of medium to resuspend them, then centrifuge at 300xg for 3 minutes. Discard the supernatant, resuspend the cells in fresh medium, and transfer them into new flasks that already contain fresh medium.
Fluid Renewal
2 to 3 times per week
Freezing Recovery
After thawing, plate the cells at 5 x 10^4 cells/cm^2 and allow the cells to recover from the freezing process and to adhere for at least 24 hours.
Freeze Medium
Handling of Cryopreserved Cultures

Confirm that the vial remains deeply frozen upon delivery, as cells are shipped on dry ice to maintain optimal temperatures during transit.

Upon receipt, either store the cryovial immediately at temperatures below -150° C to ensure the preservation of cellular integrity, or proceed to step 3 if immediate culturing is required.

For immediate culturing, swiftly thaw the vial by immersing it in a 37° C water bath with clean water and an antimicrobial agent, agitating gently for 40-60 seconds until a small ice clump remains.

Perform all subsequent steps under sterile conditions in a flow hood, disinfecting the cryovial with 70% ethanol before opening.

Carefully open the disinfected vial and transfer the cell suspension into a 15 ml centrifuge tube containing 8 ml of room-temperature culture medium, mixing gently.

Centrifuge the mixture at 300 x g for 3 minutes to separate the cells and carefully discard the supernatant containing residual freezing medium.

Gently resuspend the cell pellet in 10 ml of fresh culture medium. For adherent cells, divide the suspension between two T25 culture flasks; for suspension cultures, transfer all the medium into one T25 flask to promote effective cell interaction and growth.

Adhere to established subculture protocols for continued growth and maintenance of the cell line, ensuring reliable experimental outcomes.

Sterility
Mycoplasma contamination is excluded using both PCR-based assays and luminescence-based mycoplasma detection methods.
To ensure there is no bacterial, fungal, or yeast contamination, cell cultures are subjected to daily visual inspections.
Safety Precautions
When planning to store a cryovial in liquid nitrogen for future thawing, it is mandatory to adhere to stringent safety measures. Appropriate protective gloves and clothing are essential, and the use of a face mask or safety goggles is required during the transfer of frozen samples to or from the liquid nitrogen tank. This is to mitigate the risk of injury from potential cryovial explosions upon removal, which can result in the projection of sharp fragments.
Disclaimer
Our cells are provided for in vitro laboratory research purposes exclusively and are not intended for clinical or diagnostic use, nor are they to be administered to humans or used for veterinary purposes. Users must adhere to all applicable guidelines and regulations for the handling and use of these cells in a research setting.
Warranty
We stand by the promise of delivering products with high cell viability and robust culture performance. To achieve the best results, please make sure you follow the storage and culture instructions detailed in the product information sheet closely. Your adherence to these guidelines is key to success.
Amelogenin
X, X
Tumorigenic
Yes, in Syrian hamsters
Split Ratio
A ratio of 1:4 to 1:8 is recommended
Seeding Density
1 x 10^4 cells/cm^2 will yield in a confluent layer in about 4 days
Virus Susceptibility
Poliovirus 1, 2, 3, adenovirus 3, vesicular stomatitis (Indiana)
Reverse Transcriptase
negative
Products
keratin
Isoenzymes
G6PD, A

Hinweis: Die dargestellten Informationen und Dokumente (Bedienungsanleitung, Produktdatenblatt, Sicherheitsdatenblatt und Analysezertifikat) entsprechen unserem letzten Update und sollten lediglich der Orientierung dienen. Wir übernehmen keine Garantie für die Aktualität. Für spezifische Anforderungen bitten wir Sie, uns eine Anfrage zu stellen.

Alle Produkte sind nur für Forschungszwecke bestimmt. Nicht für den menschlichen, tierärztlichen oder therapeutischen Gebrauch.

Menge: 1 cryovial
Lieferbar: In stock
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