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.