KATO-III Cells
General information
Description | The KATO-III cell line is a human gastric carcinoma model derived from the metastatic site of a poorly differentiated adenocarcinoma. These cells are widely utilized in research focused on gastric cancer, particularly for studying the molecular mechanisms driving tumor progression, drug resistance, and metastasis. The KATO-III cells exhibit an aneuploid karyotype, characterized by multiple chromosomal abnormalities, which contributes to their aggressive cancer phenotype. They are notably p53 deficient, a feature often associated with increased tumorigenicity and altered responses to chemotherapy, making them a valuable tool for investigating the role of p53 in gastric cancer. KATO-III cells grow in suspension and display a rounded morphology. They possess a high capacity for proliferation, making them suitable for various in vitro applications, including drug screening and cytotoxicity assays. These cells are also used in studies of cell signaling pathways, as their aberrant signaling is a hallmark of gastric cancer pathogenesis. Researchers often utilize KATO-III cells to explore the efficacy of novel therapeutic agents, particularly those targeting HER2, EGFR, and other relevant oncogenic pathways. This cell line is essential for advancing our understanding of gastric cancer biology and for developing targeted therapies aimed at improving patient outcomes. |
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Organism | Human |
Tissue | Stomach |
Disease | Adenocarcinoma |
Metastatic site | Pleural effusion |
Synonyms | Kato III, Kato-III, KATO III, KATOIII, KatoIII, KATO 3, JTC-28, Japanese Tissue Culture-28 |
Characteristics
Age | 57 years |
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Gender | Male |
Ethnicity | Asian |
Morphology | Spherical |
Growth properties | Adherent/suspension |
Identifiers / Biosafety / Citation
Citation | KATO-III (Cytion catalog number 300381) |
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Biosafety level | 1 |
Expression / Mutation
Protein expression | p53 negative, CEA positive |
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Antigen expression | Blood Type B, Rh+ |
Isoenzymes | PGM3, 1, PGM1, 1, ES-D, 1, AK-1, 1, GLO-1, 2, G6PD, B, Phenotype Frequency Product: 0.0742 |
Tumorigenic | Yes, in cheek pouches of anti thymocyte serum treated hamsters, not tumorigenic in nude mice |
Karyotype | The stemline chromosome number is hypotetraploid with the 2S component occurring at 6.2%. Nine markers were common to most S metaphases, four markers were less frequent. One (occasionally 2 copies) homogenous staining region (HSR) (t(11,HSR) was present in all metaphases examined, but no double minutes (DM) were detected (Sekiguchi 1978). |
Handling
Culture Medium | Ham's F12, w: 1.0 mM stable Glutamine, w: 1.0 mM Sodium pyruvate, w: 1.1 g/L NaHCO3 (Cytion article number 820600a) |
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Medium supplements | Supplement the medium with 10% FBS |
Passaging solution | Accutase |
Doubling time | 36 hours |
Subculturing | Gather the suspension cells in a 15 ml tube and gently wash the adherent cells with PBS lacking calcium and magnesium (use 3-5 ml for T25 flasks and 5-10 ml for T75 flasks). Apply Accutase (1-2 ml for T25 flasks, 2.5 ml for T75 flasks) ensuring full coverage of the cell layer. Allow the cells to incubate at room temperature for 10 minutes. Following incubation, combine and centrifuge both the suspension and adherent cells. After centrifugation, carefully resuspend the cell pellet and transfer the cell suspension into new flasks containing fresh medium. |
Split ratio | A ratio of 1:2 to 1:8 is recommended |
Seeding density | 2 x 10^4 cells/cm^2 will result in a confluent monolayer within 2 to 3 days. |
Fluid renewal | Every 3 to 5 days |
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 | CM-1 (Cytion catalog number 800100) |
Handling of cryopreserved cultures |
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Quality control / Genetic profile / HLA
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. |
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STR profile |
Amelogenin: x,x
CSF1PO: 7,11
D13S317: 8,12
D16S539: 10,12
D5S818: 10,11
D7S820: 8,12
TH01: 7,9
TPOX: 11
vWA: 14,16
D3S1358: 15,16
D21S11: 30,31
D18S51: 12
Penta E: 13,18,19
Penta D: 13,14
D8S1179: 13,14
FGA: 23,24
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HLA alleles |
A*: 02:01:01, 02:07:01
B*: 15:01:01, 46:01:01
C*: 01:02:01, 03:03:01
DRB1*: 08:03:02, 15:01:01G
DQA1*: 01:02:01, 01:03:01
DQB1*: 06:01:01, 06:02:01
DPB1*: 02:01:02, 02:02:01
E: 01:03:02
|
Required products
One of its notable advantages is the ability to support cell growth without the need for serum supplementation. This eliminates potential interference caused by serum components, ensuring consistent and reliable experimental results. By providing a serum-free culture environment, Ham's F-12 Medium offers researchers greater control over their investigations.
Another key feature of Ham's F-12 Medium is its suitability for single-cell plating. This makes it an excellent choice for a variety of cell lines, including CHO cells, lung cells, and mouse L cells. The medium's optimized nutrient composition facilitates efficient attachment and growth of individual cells, enabling the establishment of homogeneous cell cultures with improved reproducibility.
Moreover, Ham's F-12 Medium has gained recognition as the preferred medium for the Clonal Toxicity Assay (CTA). This assay plays a critical role in assessing the cytotoxic effects of substances on cells. By utilizing Ham's F-12 Medium in the CTA, researchers can accurately evaluate the impact of various compounds or treatments on individual cells, providing valuable insights into toxicological profiles.
Quality control
pH = 7.2 +/
- 0.02 at 20-25°C.
Each lot has been tested for sterility and absence of mycoplasma and bacteria.
Maintenance
Keep refrigerated at +2°C to +8°C in the dark. Freezing and warming up to +37° C minimize the quality of the product.
Do not heat the medium to more than 37° C or use uncontrollable sources of heat (e.g., microwave appliances).
If only a part of the medium is to be used, remove this amount from the bottle and warm it up at room temperature.
Shelf life for any medium except for the basic medium is 8 weeks from the date of manufacture.
Composition
Components
mg/L
Inorganic Salts
Calcium chloride x 2H2O
44,00
Copper(II) sulfate x 5H2O
0,00
Iron (II) sulfate x 7H2O
0,83
Magnesium chloride x 6H2O
122,00
Potassium chloride
223,65
Sodium chloride
7599,00
di-Sodium hydrogen phosphateanhydrous
142,04
Zinc sulfate x 7H2O
0,86
Other Components
D(+)-Glucose anhydrous
1801,60
Hypoxanthine
4,08
Linoleic acid
0,08
DL-α-Lipoic acid
0,21
Phenol red
1,20
Putrescine x 2HCl
0,16
Sodium pyruvate
110,00
Thymidine
0,73
NaHCO3
1176,00
Amino Acids
L-Alanine
8,91
L-Arginine x HCl
210,70
L-Asparagine x H2O
15,01
L-Aspartic acid
13,31
L-Cysteine x HCl x H2O
35,12
L-Alanyl-L-Glutamine
217,30
L-Glutamic acid
14,71
Glycine
7,51
L-Histidine x HCl x H2O
20,96
L-Isoleucine
3,94
L-Leucine
13,12
L-Lysine x HCl
36,54
L-Methionine
4,48
L-Phenylalanine
4,96
L-Proline
34,53
L-Serine
10,51
L-Threonine
11,91
L-Tryptophan
2,04
L-Tyrosine
5,44
L-Valine
11,71
Vitamins
D(+)-Biotin
0,01
D-Calcium pantothenate
0,24
Choline chloride
13,96
Folic acid
1,32
myo-Inositol
18,02
Nicotinamide
0,04
Pyridoxine x HCl
0,06
Riboflavin
0,04
Thiamine x HCl
0,34
Vitamin B12
1,36
Phosphate-buffered saline (PBS) is a versatile buffer solution used in many biological and chemical applications, as well as tissue processing. Our PBS solution is formulated with high-quality ingredients to ensure a constant pH during experiments. The osmolarity and ion concentrations of our PBS solution are matched to those of the human body, making it isotonic and non-toxic to most cells.
Composition of our PBS Solution
Our PBS solution is a pH-adjusted blend of ultrapure-grade phosphate buffers and saline solutions. At a 1X working concentration, it contains 137 mM NaCl, 2.7 mM KCl, 8 mM Na2HPO4, and 2 mM KH2PO4. We have chosen this composition based on CSHL protocols and Molecular cloning by Sambrook, which are well-established standards in the research community.
Applications of our PBS Solution
Our PBS solution is ideal for a wide range of applications in biological research. Its isotonic and non-toxic properties make it perfect for substance dilution and cell container rinsing. Our PBS solution with EDTA can also be used to disengage attached and clumped cells. However, it is important to note that divalent metals such as zinc cannot be added to PBS as this may result in precipitation. In such cases, Good's buffers are recommended. Moreover, our PBS solution has been shown to be an acceptable alternative to viral transport medium for the transport and storage of RNA viruses, such as SARS-CoV-2.
Storage of our PBS Solution
Our PBS solution can be stored at room temperature, making it easy to use and access.
To sum up
In summary, our PBS solution is an essential component in many biological and chemical experiments. Its isotonic and non-toxic properties make it suitable for numerous applications, from cell culture to viral transport medium. By choosing our high-quality PBS solution, researchers can optimize their experiments and ensure accurate and reliable results.
Composition
Components
mg/L
Inorganic Salts
Potassium chloride
200,00
Potassium dihydrogen phosphate
200,00
Sodium chloride
8,000.00
di-Sodium hydrogen phosphate anhydrous
1,150.00