| General Information |
| Organism |
Homo sapiens, human |
| Cell Line Description |
SNU-16 is a human gastric adenocarcinoma cell line established from malignant ascites collected before chemotherapy from a 33-year-old female patient with poorly differentiated stomach carcinoma. The cells grow in suspension as multicellular aggregates and combine an FGFR2-amplified signaling background with c-MYC amplification, defined TP53 and RHOA variants, a CD44–SLC1A2 fusion, and microsatellite stability. This profile supports gastric cancer signaling, targeted-inhibitor, apoptosis, resistance, three-dimensional aggregate, biomarker, and xenograft studies. Its metastatic-fluid origin and aggregate growth require density-controlled handling and careful assay normalization. |
| Cell Type |
Human gastric adenocarcinoma epithelial cell |
| Tissue |
Stomach |
| Sampling Site |
Malignant ascites; metastatic-site specimen |
| Disease |
Gastric adenocarcinoma, historically described as poorly differentiated gastric carcinoma |
| Differentiation |
Poorly differentiated |
| Year Established |
1987 |
| Gender |
Female |
| Age |
33 years |
| Population Background |
Korean, East Asian |
| Morphology |
Epithelial morphology with multicellular aggregate formation |
| Growth Mode |
Suspension growth, predominantly as multicellular aggregates |
| Applications |
1. Poorly differentiated gastric adenocarcinoma biology 2. Metastatic gastric cancer and malignant-ascites research 3. FGFR2 amplification and pathway-dependency studies 4. FGFR, ERBB3, FRS2, ERK, and AKT signaling assays 5. Targeted-inhibitor sensitivity and resistance studies 6. Apoptosis, proliferation, and survival assays 7. c-MYC amplification research 8. TP53, RHOA, MSH6, and DNA-repair studies 9. CD44–SLC1A2 fusion research 10. CEA, TAG-72, VIP-receptor, and gastric biomarker studies 11. Suspension aggregate and three-dimensional culture assays 12. Semisolid colony-formation assays 13. Xenograft efficacy and pharmacodynamic studies 14. CRISPR, RNA interference, and gene-expression studies |
| Characteristics |
| FGFR2 Amplification |
FGFR2 is amplified and overexpressed, producing constitutive receptor phosphorylation and a strong pathway-dependent growth phenotype |
| c-MYC Status |
c-MYC is amplified. The original characterization did not detect amplification or rearrangement of N-MYC, L-MYC, MYB, or EGFR. |
| ERBB2 Context |
ERBB2 RNA is expressed, but the original characterization described levels comparable to other gastric cancer cell lines rather than a uniquely high-amplification state |
| TP53 Variant |
TP53 c.614A>T, producing p.Tyr205Phe |
| RHOA Variants |
RHOA c.13C>T (p.Arg5Trp) and c.117T>G (p.Phe39Leu), each recorded as heterozygous |
| MSH6 Variant |
MSH6 c.4065_4066insTTGA, producing p.Lys1358fs*2; recorded as heterozygous |
| Microsatellite Status |
Microsatellite stable despite the heterozygous MSH6 frameshift variant; do not infer mismatch-repair deficiency from the variant alone |
| Gene Fusion |
CD44–SLC1A2 fusion |
| Surface and Secreted Markers |
Expresses carcinoembryonic antigen and TAG-72 surface glycoproteins; blood-group phenotype is A, Rh-positive |
| Neuroendocrine-Related Features |
Vasoactive intestinal peptide receptors and L-dopa decarboxylase are present, whereas gastrin receptors were not detected in the original characterization |
| Tumorigenicity |
Tumorigenic and suitable for FGFR2-amplified gastric cancer xenograft studies |
| Karyotype |
Bimodal, hypotetraploid chromosome distribution with three normal X chromosomes per cell, recurrent structural markers, double minutes in most cells, and approximately 1% higher-ploidy cells |
| Culture Conditions and Handling |
| Culture Conditions |
37°C in a humidified atmosphere containing 5% CO₂ |
| Culture Surface |
Standard tissue-culture flasks; attachment coating is not required for routine suspension propagation |
| Growth Appearance |
Free-floating single cells and multicellular aggregates; moderate aggregation is an expected feature of healthy cultures |
| Medium Renewal |
Add fresh medium every 3–4 days according to cell density. Complete or partial medium replacement can also be performed after gentle centrifugation and resuspension. |
| Routine Maintenance |
Maintain cultures by adding fresh complete medium as density increases. For more complete medium exchange, collect the suspension, centrifuge gently, remove spent medium, and resuspend the cells in fresh complete medium. |
| Aggregate Management |
Mix gently but thoroughly before sampling or splitting. If a single-cell suspension is required, dissociate aggregates using a validated mechanical or enzymatic method and confirm viability; avoid excessive shear that can distort response assays. |
| Subculturing |
1. Examine aggregate size, density, medium color, and viability. 2. Gently resuspend the culture to distribute aggregates evenly. 3. Transfer the required fraction into a sterile centrifuge tube when complete medium replacement is needed. 4. Centrifuge using a validated low-speed setting and remove spent medium without disturbing the pellet. 5. Resuspend gently in pre-warmed RPMI-1640 with 10% fetal bovine serum. 6. Seed fresh flasks at a density that maintains logarithmic growth and avoids prolonged crowding. 7. Return cultures to 37°C and 5% CO₂ and confirm recovery and expected aggregate formation. |
| Cryopreservation Medium |
Complete growth medium supplemented with 5% DMSO |
| Cryopreservation |
Collect an actively growing culture, prepare a uniform viable-cell suspension, resuspend in chilled cryopreservation medium, dispense into labeled cryovials, cool slowly at a controlled rate, and transfer to long-term storage. |
| Long-Term Storage |
Below −130°C, preferably in the vapor phase of liquid nitrogen |
| Thawing |
Thaw rapidly at 37°C, disinfect the vial exterior, dilute the contents with pre-warmed complete medium, centrifuge at approximately 125 × g for 5–7 minutes, remove residual cryoprotectant, and resuspend in complete medium. Seed promptly and minimize alkaline exposure during recovery. |
| Biosafety |
Handle as human-derived research material under Biosafety Level 1 or the locally assigned equivalent, using appropriate aseptic technique, personal protective equipment, decontamination, and waste procedures. |
| Handling Notes |
Record passage number, viable-cell density, aggregate-dissociation method, medium and serum lot, feeding schedule, and time after seeding. |