GL261

The GL261 cell line is a murine glioma model derived from C57BL/6 mice. This cell line is widely used in neuro-oncology research due to its ability to closely mimic the aggressive and invasive characteristics of human glioblastoma multiforme (GBM). GL261 cells grow as adherent cultures and form tumors when injected intracranially into syngeneic hosts, making them an ideal model for studying glioma progression, tumor microenvironment interactions, and therapeutic responses in an immunocompetent setting.

GL261 cells are known for their high proliferative capacity and expression of various glioma-associated markers, such as glial fibrillary acidic protein (GFAP) and S100. They exhibit mutations in key oncogenes and tumor suppressor genes, including p53 and PTEN, which are commonly altered in human GBM. This genetic profile, along with their robust in vivo tumorigenicity, has made GL261 a valuable tool for preclinical evaluation of anti-glioma therapies, including chemotherapy, radiotherapy, and immunotherapy approaches. Researchers also utilize GL261 cells to investigate the mechanisms of glioma invasion and resistance to treatment, contributing to the development of more effective clinical strategies.

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.