HCC94

The HCC94 cell line is a model used for studying cervical cancer, a condition commonly linked to human papillomavirus (HPV) infection. This cell line has been instrumental in understanding mechanisms underlying chemotherapy resistance, particularly through metabolic pathways. Recent studies have shown that in cervical cancer stem cells (CSCs) derived from HCC94, enzymes involved in glycogen metabolism, such as PCK1 and phosphorylated glycogen phosphorylase (pPYGL), facilitate the breakdown of glycogen. This process directs glucose into the pentose phosphate pathway (PPP), producing NADPH and aiding in reactive oxygen species (ROS) clearance. This mechanism contributes to the cell's survival under chemotherapy, thereby fostering resistance.

Further research has demonstrated that knocking down PCK1 in HCC94 CSCs can reduce NADPH production and impair the cells' ability to clear ROS, enhancing their sensitivity to chemotherapy. These findings underline the potential of targeting metabolic pathways like PPP and glycogen breakdown as strategies for overcoming drug resistance in cervical cancer. This understanding may pave the way for new therapeutic approaches aimed at disrupting ROS management mechanisms to improve treatment outcomes in cervical cancer.

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.