NCH644 Cells

The NCH644 cell line is a glioblastoma stem-like cell line derived from patient tumors that lack EGFR amplification, making it a valuable model for studying glioblastoma biology, especially in the context of growth factor signaling and stem cell properties. Studies have demonstrated that in NCH644 cells, basic fibroblast growth factor (bFGF) plays a significant role in mediating growth and maintaining stem cell characteristics, whereas epidermal growth factor (EGF) does not show similar effects. NCH644 cells respond to bFGF by increasing the expression of stem cell markers such as CD133 and nestin, and they also exhibit enhanced resistance to apoptosis. This resistance, coupled with the lack of EGFR amplification, makes NCH644 a suitable model for understanding glioblastoma stem-like cell behavior, particularly under different growth factor conditions.
Another notable feature of NCH644 is its slower proliferation rate when compared to other glioblastoma stem-like cell lines, such as NCH421k. However, when stimulated by bFGF, NCH644 cells show increased expression of EGFR, even in the absence of EGFR amplification, which highlights the interaction between fibroblast growth factor receptors (FGFRs) and EGFR signaling pathways. Moreover, bFGF plays a role in increasing the clonogenicity and multipotency of NCH644 cells, further supporting the notion that bFGF is crucial for maintaining the glioma stem-like properties of these cells.
NCH644 cells have also been shown to harbor label-retaining, slow-cycling subpopulations that exhibit increased tumorigenicity and resistance to treatments such as irradiation and temozolomide. This subpopulation of label-retaining cells within the NCH644 line is highly tumorigenic, capable of forming tumors in immunocompromised mice even with small cell numbers. These features, combined with their resistance to standard treatments, make NCH644 a critical tool for investigating therapeutic strategies targeting glioblastoma stem cells.

Spheroid culture

66 years

Caucasian

DMEM:Ham's F12, w: 3.1 g/L Glucose, w: 1.6 mM L-Glutamine, w: 15 mM HEPES, w: 1.0 mM Sodium pyruvate, w: 1.2 g/L NaHCO3 (Cytion article number 820400a)

For subculturing spheroid cultures, begin by mechanically dissociating the spheroids through pipetting up and down 5 to 10 times using an Eppendorf pipette with 1000 μl filter tips. After this, centrifuge the mixture at 300g for 5 minutes at room temperature to pellet the cells. Discard the supernatant and resuspend the cell pellet in fresh culture medium. Finally, transfer the resuspended cells into new culture vessels to promote further spheroid formation. This approach ensures efficient spheroid breakdown and readies them for continued growth in a new environment.

After thawing allow the cells to recover from the freezing process for at least 24 to 48 hours.

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

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.

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.

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

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.

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

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.

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

When planning to store a cryovial in liquid nitrogen for future thawing, it is mandatory to adhere to stringent safety measures. Appropriate protective gloves and clothing are essential, and the use of a face mask or safety goggles is required during the transfer of frozen samples to or from the liquid nitrogen tank. This is to mitigate the risk of injury from potential cryovial explosions upon removal, which can result in the projection of sharp fragments.

We stand by the promise of delivering products with high cell viability and robust culture performance. To achieve the best results, please make sure you follow the storage and culture instructions detailed in the product information sheet closely. Your adherence to these guidelines is key to success.

A ratio of 1:2 to 1:5 is recommended

Highly CD133 positive