HNO258

The HNO258 cell line is derived from an oral squamous cell carcinoma, which is a subtype of head and neck squamous cell carcinoma (HNSCC). This cell line exhibits several chromosomal abnormalities, which have been identified through chromosomal comparative genomic hybridization (cCGH). Specifically, HNO258 has shown DNA copy number gains in the chromosomal regions 1q41, 3q21-qter, 7p, 7cen-q21, 8q22-qter, 9cen-p13, 9q31-qter, 11q13, 15p, and 15q. Additionally, it displays copy number losses in the regions 4p and 18q12-qter. These genetic alterations are common in HNSCC and are associated with tumorigenesis and cancer progression.

The amplification of 11q13, observed in HNO258, is particularly noteworthy due to its association with the overexpression of oncogenes such as CCND1 (cyclin D1) and CTTN (cortactin), which are involved in cell cycle regulation and cytoskeletal organization, respectively. These oncogenes are frequently implicated in the aggressive behavior of cancer cells, contributing to increased proliferation and invasiveness. The detailed genetic characterization of HNO258 makes it a valuable model for studying the molecular mechanisms underlying oral squamous cell carcinoma and for evaluating potential therapeutic strategies that target these specific genetic alterations.

37°C, 5% CO₂, humidified atmosphere.

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

2. 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.

3. 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.

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

5. 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.

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

7. 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.

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

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.

For long-term preservation, place vials in vapor-phase liquid nitrogen at about −150 to −196 °C. Storage at −80 °C is acceptable only as a short interim step before transfer to liquid nitrogen.

Cryopreserved cell lines are shipped on dry ice in validated, insulated packaging with sufficient refrigerant to maintain approximately −78 °C throughout transit. On receipt, inspect the container immediately and transfer vials without delay to appropriate storage.

At Cytion, we stand behind the quality and viability of our products. We guarantee that our cells will be viable at the start of culture for 60 days after shipment from our facilities. We assure that all materials conform to the specifications described in the Certificate of Analysis and/or Product Sheet.

For full details, please refer to our Warranty Statement.